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Technical Information
RB-TK2350-1 RB-TK2350-2
CLASS-T DIGITAL AUDIO AMPLIFIER REFERENCE BOARD USING DIGITAL POWER PROCESSING (DPP T M ) TECHNOLOGY
Technical Information Revision 1.5 June 2002
GENERAL DESCRIPTION The RB-TK2350 reference board is based on the TK2350 digital audio power amplifier chipset from Tripath Technology. This board is designed to provide a simple and straightforward environment for the evaluation of the Tripath stereo TK2350 amplifier. This board can also be used in a bridged configuration for high power mono output. Note: There are two versions of the RB-TK2350, depending on nominal supply voltage. RB-TK2350-1 - Nominal supply voltage +/-21V to +/-39V RB-TK2350-2 - Nominal supply voltage +/-35V to +/-60V FEATURES BENEFITS
RB-TK2350-1: 2 x 70W continuous output power @ 0.1% THD+N, 4, +28V RB-TK2350-1: 250W continuous output power @ 0.1% THD+N, bridged 4, +28V RB-TK2350-2: 2 x 175W continuous output power @ 0.1% THD+N, 4, +45V RB-TK2350-2: 525W continuous output power @ 0.1% THD+N, bridged 4, +45V Outputs short circuit protected
Uses only N-channel power MOSFETs Ready to use in many applications: 2 channel stereo systems Powered 2.1 speaker systems Powered Subwoofers
Note: RB-TK2350-1 shown
1 RB-TK2350-1, RB-TK2350-2 - MC/Rev. 1.2, 06/02
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Technical Information
OPERATING INSTRUCTIONS
Power Supply Description
There are three external power supplies required to operate this board: VPP, VNN, and V5 (see Figures 1 and 2). VPP and VNN power the load and so must each be able to provide half of the desired output power, plus about 20% for overhead and margin. The TK2350 amplifier also requires a supply, VN10, that is 10V more positive than VNN and tracks VNN. This VN10 power supply is generated from the TP2350 through a P channel MOSFET (IRF9510). All output and power supply connections are supplied using tinned wire (not shown). Though not required, the following powering-up sequence is usually adhered to during bench evaluations: 1st) V5 2nd) VNN and 3rd) VPP. Please refer to the Turn-on/off Pop section. The positive and negative supply voltages do not have to match or track each other, but distortion or clipping levels will be determined by the lowest (absolute) supply voltage. Figure 1 shows the proper supply configuration for the RB-TK2350.
VPP (yellow) V5 (red) VS 5V
AGND (black) PGND (blue) VS 10V VNN (orange) VN10 (generated on board)
Figure 1 Note: To avoid signal degradation, the Analog Ground and Power Ground should be kept separate at the power supply. They are connected locally on the RB-TK2350.
Connector J4 (Yellow) J4 (Blue) J4 (Orange) J3 (Red) J3 (Black) Power Supply VPP PGND VNN V5 AGND
Table 1
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Technical Information
Input Connections
Audio input to the board is located at CH1 INPUT (J100) and CH2 INPUT (J200) (see Figures 2 and 3). The input can be a test signal or music source. A dual RCA cable is provided with female 100mil connectors that mate with J100 and J200.
Output Connections
There are two output connectors on the reference board for the speaker outputs. Channel 1 output and associated Power Ground 1 is located at J5. Channel 2 output and associated Power Ground 2 is located at J6. A two-wire harness for each output is provided. See Table 2 for the output connector wire colors. The TK2350 can be operated as a two-channel single-ended amplifier, bridged mono output amplifier (see Figure 9) or with a passive crossover for a 2.1 channel application (refer to Application Note 13). Outputs can be any passive speaker(s) or test measurement equipment with resistive load (see Application Note 4 for more information on bench testing). Connector Name J5 J6 Output White Red Table 2 Ground Blue Black
Turn-on/off Pop
To avoid turn-on pops, bring the mute from a high to a low state after all power supplies have settled. To avoid turn-off pops, bring the mute from a low to a high state before turning off the supplies. The only issue with bringing up the V5 last, or turning it off first, is clicks/pops. If the mute line is properly toggled (slow turnon, quick turn-off), then any power up sequence is acceptable. In practice, the V5 will usually collapse before VPP and VNN. The same discussion holds true for the VN10 supply. It can collapse before VPP or VNN though this may cause a larger turn-off pop than if the mute had been activated before either the VN10 or V5 supply have collapsed. No damage will occur to the TK2350 chipset if either the V5 or VN10 collapse before VPP or VNN, assuming the mute is asserted before the supplies start to discharge.
HMUTE
There is an LED, D12, which will illuminate if a fault condition is reported. HMUTE, pin 8 on the TC2001, will illuminate D12 via R30, if the processor detects an over or under voltage fault, as well as an over current fault. In addition, if MUTE is high (by removing jumper on J2), the LED will also be illuminated. An over/under voltage fault will automatically reset (and D12 will turn off) once the supply voltage is brought back into specification. If an over current condition occurs, cycle the MUTE pin (by removing the jumper on J2 and then replacing it). Assuming all supplies are still within specification, the HMUTE LED will be off and the TK2350 reference board will again amplify input signals.
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Technical Information
RB-TK2350 Board
VPP VNN
+-
+-
M2 Ch 2 Offset M4 Ch 1 Offset
OUT2 GND
AGND V5
Q1
VNN PGND VPP
Tripath TP2350
Tripath TC2001
MUTE BBM0 AGND IN1
M3
M1
GND OUT1
Figure 3
ARCHITECTURE
A block diagram of one channel of the reference board is shown in Figure 4. The major functional blocks of the amplifier are described below.
In
TC2000
TP2350
Figure 4 Note: The TK2350 is an inverting amplifier.
TK2350 Amplifier Gain
The TK2350 amplifier gain is the product of the input stage gain and the modulator gain. AVTA2350 = AVINPUTSTAGE * AVMODULATOR
AVTA2350
-
RF RI
x
RFBC (RFBA +RFBB ) + 1 RFBA RFBB
For the RB-TA2350-2 board; RI (R100, R200) = 49.9k RF (R101, R201) = 20k RFBA (R105, R205) = 1k RFBB (R110, R210) = 1.07k
4 RB-TK2350-1, RB-TK2350-2 - MC/Rev. 1.2, 06/02
+ -
AGND IN2
5V
Audio Source
Output Section
Out
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Technical Information
RFBC (R106, R206) = 13.3k
AVTA2350
-
13.3k (1k+1.07k ) + 1 = 10.71 V V 49.9k 1k 1.07k
20k x
Input Stage Figure 5 shows one channel of the Input Stage. The TK2350 amplifier is designed to accept unbalanced inputs. For the RB-TK2350-1, the gain is 6.4, or approximately 16 dB. For the RB-TK2350-2, the gain is 10.8, or approximately 20.7 dB. Please note that the input stage of the TC2001 is biased at approximately 2.5VDC. Therefore, for an input signal centered around ground (0VDC), the polarity of the coupling capacitor, CIN, shown in Figure 5 is correct.
49.9K RIN V5 1M 10K 0.1uF, 50V 2.2uF, 50V + CIN 1M Input to TC2001
(DC Bias ~2.5V)
Figure 5
The value of the input capacitor, CIN, in Figure 5 (labeled C100 and C200 on the schematic), and the input resistor, RIN (labeled R100 and R200), set the -3dB point of the input high-pass filter. The frequency of the input high pass pole, FP, -3dB point can be calculated as follows: FP = 1/(2 x CIN x RIN ) where: CIN = input capacitor value in Farads RIN = input resistor value in Ohms Output offset voltages can be nulled by adjusting the 10K potentiometer shown in Figure 5. Once set, the offset does not typically drift with temperature, so no tracking circuitry is required. Offsets can typically be set to +/- 25 mV. R104 is used to adjust the offset of CH1, and R204 is used to adjust the offset of CH2. If a different TC2001 or TP2350 is placed in the RB-TK2350 reference board, the offset of each channel will need to be re-trimmed. RB-TK2350 Control Circuitry The MUTE pin is brought out to an external 2-pin header, J4 (Figure 6). When a jumper is installed from Pin 1 to 2 of J4, the MUTE line is pulled to ground and the outputs are enabled. Note that if the MUTE jumper is removed, the MUTE pin floats high, and the amplifier is muted.
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Technical Information
ROCR
OCD2 J2 MUTE
24
+5V R111 BBM0
26
14
J1
C103 16 R211
25
AGND
OCD1
BBM1
AGND
C203
Figure 6 The resistors, ROCR in Figure 6 (labeled R111 and R211 in the schematic), set the overcurrent threshold for the output devices. Note that these are NOT the sense resistors (the overcurrent sense resistors, RS, are in the output stage). By adjusting the ROCR resistor values, the threshold at which the amplifier "trips" can be changed. The range that the overcurrent trip point can be adjusted (by changing ROCR) is determined by the value of the sense resistors. ROCR on this reference board is pre-set to 20K for a 4 single-ended application. For lower impedance applications (i.e. 4 bridged), this board's overcurrent may trip prematurely. This is indicated by the amplifier going into mute; to clear, toggle the mute or cycle the power. To reduce overcurrent sensitivity, decrease the value of ROCR until the sensitivity meets the desired level. ROCR can be reduced, though if set too low of a value, this may result in an overcurrent threshold that is so high the amplifier will try to drive a short circuit, possibly damaging the output FETs. Finally, the Break-Before-Make (or "BBM") lines are used to control the "dead time" of the output FETs. The "dead time" is the period of time between the turn-off of one device and the turn-on of the opposite device on the same channel. If the two devices are both on at the same time, current "shoots through" from one supply to the other, bypassing the load altogether. Obviously, this will have a great impact on the overall efficiency of the amplifier. However, if the dead time is too long, linearity suffers. The optimum BBM setting will change with different output FETs, different operating voltages, different layouts and different performance requirements. For this reason, Tripath has provided a means to adjust the BBM0 setting, via jumper J2, on the 3-pin header (see Figure 6). Please note that BBM1 is hardwired to "0" on the RB-TK2350 since operating the reference board with BBM delays of 40nS or less will result in significant shoot through current and possible MOSFET destruction. These settings should be verified over the full temperature and load range of the application to ensure that any thermal rise of the output FETs and TK2350 does not impact the performance of the amplifier. This amplifier board is set to 80nS, and the table below shows the BBM values for various settings of the jumpers (Figure 7).
BBM1 BBM0
Delay 120nS 80nS
1) 2)
0 0
0 1
Note: The default delay jumper setting is 80nS.
Figure 7 Output Section The output section includes the gate resistors, output diodes, FETs, output filters, the previously mentioned OVERCURRENT sense resistors, clamping diodes, a Zobel Network, and various bypass capacitors.
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Technical Information
OCSHN R1/2 0.01
OCSHP VPP
M1/2 R3/4 15 HO
D21/23 MUR120
C3/4 0.1uF, 250V
+
C1/2 0.1uF, 100V
C30 330uF, 63V
R7/8 2.2 HOCOM
C6/7 33uF, 160V
L1/2 11.3uH
OUT
FBKOUT M3/4 R11/12 15 LO R16/17 2.2 LOCOM
D22/24 MUR120 C31/32 220pF, 250V R31/32 16
C8/10 0.22uF, 100V
R5/9 20 /2W
C5/9 0.1uF, 100V R15/18 0.01 VNN
+
C11/12 0.1uF, 100V OCSLP OCSLN C29 330uF, 63V
Figure 8
The gate resistors (labeled R3, R4, R11, and R12 in Figure 8 and the attached schematic) are used to control MOSFET switching rise/fall times and thereby minimize voltage overshoots. They also dissipate a portion of the power resulting from moving the gate charge each time the MOSFET is switched. If RG is too small, excessive heat can be generated in the driver. Large gate resistors lead to slower gate transitions resulting in longer rise/fall times and thus requiring a larger BBM setting. Tripath recommends using an RG of 15 when the Qg is greater than 70nC and RG of 22 when the gate charge (Qg) of the output FET is less than 70nC. The output MOSFETs (M1, M2, M3, and M4) provide the switching function required of a Class-T design. They are driven directly by the TP2350 through the gate resistors. The devices used on the reference board are ST STW34NB20 MOSFETs. The TK2350 data sheet contains information on output FET selection as well as Tripath application notes "FETs - Selection and Efficiency" and "Designing with Switching Amplifiers for Performance and Reliability". The bypass capacitors C105/C205 and C113/C213 are critical to the reduction of ringing on the output MOSFETs. These parts are placed as closely as possible to the leads of the MOSFETs, and the leads of the capacitors themselves are as short as practical. Their values will not change with different output MOSFETs. The output diodes D106/D107/D206/D207 are also critical to the reduction of ringing on the outputs of the FETs. They shunt the inductive energy if the output exceeds VPP or goes below VNN. The proper connection of these diodes are "drain to drain" and "source to source" as shown in the schematic diagrams. The output filters L100/C108 and L200/C208 are the low-pass filters that recover the analog audio signal. One of the benefits of the Class-T design is the ability to use output filters with relatively high cutoff frequencies. This greatly reduces the speaker interactions that can occur with the use of lower-frequency filters common in Class-D designs. Also, the higher-frequency operation means that the filter can be of a lower order (simpler and less costly). The OEM may benefit from some experimentation in the filter design, but the values provided in the reference design, 11.3uH and 0.22uF (nominal resonant frequency of 101kHz), provide excellent results for most loads between 4 and 8. As important as the values themselves, the material used in the core is important to the performance of the filter. Core materials that saturates too easily will not provide acceptable distortion or efficiency figures. Tripath recommends a low-mu core, like type 2, iron powder cores. Micrometals, (www.micrometals.com), is a main supplier of iron powder cores. The core part number used on the RB-TK2350 is T106-2 and is wound with 29 turns of 16AWG wire.
7 RB-TK2350-1, RB-TK2350-2 - MC/Rev. 1.2, 06/02
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Technical Information
The Zobel circuits R117/C109 and R217/C209 are there in case an amplifier is powered up with no load attached. The Q of the LC output filter, with no load attached, rises quickly out to 80kHz. Resonant currents in the filter and ringing on the output could reduce the reliability of the amplifier. The Zobel eliminates these problems by reducing the Q of the network significantly above 50kHz. Modifying the LC output filter should not require a recalculation of the Zobel value, though depending on application, the power capability of R117 and R217 may need to be increased to 5W from 2W. The components used on the reference board should be quite adequate for almost all applications. The bypass capacitors C105/C205 are critical to the reduction of ringing on the outputs of the FETs. These parts are placed as closely as possible to the leads of the FETs, and the leads of the capacitors themselves are as short as practical. Their values will not change with different output FETs. Connection Diagram for Bridge Mode Operation The amplifier is connected to the power supplies and load as shown in Figure 9. Note that an inverter has been added in front of one of the channel inputs (i.e. Channel 2). The main reason for processing the channels out of phase is to avoid potential problems with switching power supplies, but it also simplifies the connections for bridged-mode operation. For bridged operation, simply connect the "-" terminal to the output of the inverted channel (Channel 1 output, J100 pin 1) and the "+" terminal to the output of the non-inverted channel with respect to the input signal (Channel 2 output, J200 pin 1). The connection shown in Figure 9 is the easiest way to use the RB-TK2350 to test bridged mode operation. If the evaluation setup does not provide two out of phase signals, there is another way to evaluate bridge mode operation. This requires the RB-TK2350 to be modified. Change R200 to 20K from 49.9K. Connect Pin 22 (OAOUT1) to IN2 on J200. The input signal is still applied to (J100) and is inverted on chip thus providing the input signal for Channel 2 via J200. If the gain of the system needs to be modified, R101 can be adjusted. R201 should be left at 20K. If stereo operation is again desired, then the value of R101 and R201 must be made the same to ensure nominal gain for both channels. Additionally, the connection between Pin 22 and IN2 on J200 should be removed.
VPP
VNN
+-
+-
M2 Ch 2 Offset M4 Ch 1 Offset
OUT2 GND
AGND V5
Q1
VNN PGND VPP
Tripath TP2350
Tripath TC2001
MUTE BBM0 AGND IN1
M3
M1
GND OUT1
Figure 9
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+ -
AGND IN2
5V
Audio Source
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Technical Information
Circuit Board Layout
The TK2350 is a power (high current) amplifier that operates at relatively high switching frequencies. The output of the amplifier switches between VPP and VNN at high speeds while driving large currents. This high-frequency digital signal is passed through an LC low-pass filter to recover the amplified audio signal. Since the amplifier must drive the inductive LC output filter and speaker loads, the amplifier outputs can be pulled above the supply voltage and below ground by the energy in the output inductance. To avoid subjecting the TK2350 to potentially damaging voltage stress, it is critical to have a good printed circuit board layout. It is recommended that Tripath's layout and application circuit be used for all applications and only be deviated from after careful analysis of the effects of any changes. The following components are important to place near either their associated TC2001, TP2350, or output MOSFET pins. The recommendations are ranked in order of layout importance, either for proper device operation or performance considerations. The component designators, referred to, are for channel 1 of the RB-TK2350. The capacitors, CHBR (C3/C6), provide high frequency bypassing of the amplifier power supplies and will serve to reduce spikes across the supply rails. Please note that both mosfet halfbridges must be decoupled separately. In addition, the voltage rating for CHBR should be at least 150V as this capacitor is exposed to the full supply range, VPP-VNN. DO (D21/D22) are also critical to the reduction of ringing on the outputs of the FETs. They shunt the inductive energy if the output exceeds VPP or goes below VNN. The proper connection of these diodes are "drain to drain" and "source to source" as shown in the schematic diagrams. These diodes have a 200V rating. CFB (C107) removes very high frequency components from the amplifier feedback signals and lowers the output switching frequency by delaying the feedback signals. In addition, the value of CFB is different for channel 1 and channel 2 to keep the average switching frequency difference greater than 40kHz. This minimizes in-band audio noise. Locate these capacitors as close to their respective TC2001 pin as possible. To minimize noise pickup and minimize THD+N, RFBC (R106/R109) should be located as close to the TC2001 as possible. Make sure that the routing of the high voltage feedback lines is kept far away from the input op amps or significant noise coupling may occur. It is best to shield the high voltage feedback lines by using a ground plane around these traces as well as the input section. CB (C7A1/C19), CSW (C5A1/C20) provides high frequency bypassing for the VN10 and bootstrap supplies. Very high currents are present on these supplies.
-
-
-
-
In general, to enable placement as close to the TP2350, and minimize PCB parasitics, the capacitors CFB, CB and CSW should be surface mount types, located on the "solder" side of the board. Some components are not sensitive to location but are very sensitive to layout and trace routing. To maximize the damping factor and reduce distortion and noise, the modulator feedback connections should be routed directly to the pins of the output inductors. LO (L100). The output filter capacitor, CO (C10), and zobel capacitor, RZ (R9), should be star connected with the load return. The output ground feedback signal should be taken from this star point. The modulator feedback resistors, RFBA (R105/R108) and RFBB (R107/R110), should all be grounded and attached to 5V together. These connections will serve to minimize common mode noise via the differential feedback. The feedback signals that come directly from the output inductors are high voltage and high frequency in nature. If they are routed close to the input nodes, INV1 and INV2, the high impedance inverting opamp pins will pick up noise. This coupling will result in significant
RB-TK2350-1, RB-TK2350-2 - MC/Rev. 1.2, 06/02
-
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Technical Information
background noise, especially when the input is AC coupled to ground, or an external source such as a CD player or signal generator is connected. Thus, care should be taken such that the feedback lines are not routed near any of the input section. To minimize the possibility of any noise pickup, the trace lengths of INV1 and INV2 should be kept as short as possible. This is most easily accomplished by locating the input resistors, RI (R100), and the input stage feedback resistors, RF (R101), as close to the TC2001 as possible. In addition, the offset trim resistor, ROFB (R122), which connects to either FDBKP1, or FDBKP2, should be located close to the TC2001 input section.
Performing Measurements on the EB-K2350
The TK2350 operates by generating a high frequency switching signal based on the audio input. This signal is sent through a low-pass filter that recovers an amplified version of the audio input. The frequency of the switching pattern is spread spectrum in nature and typically varies between 100kHz and 1MHz, which is well above the 20Hz - 20kHz audio band. The pattern itself does not alter or distort the audio input signal, but it does introduce some inaudible components. The measurements of certain performance parameters, particularly noise related specifications such as THD+N, are significantly affected by the design of the low-pass filter used on the output as well as the bandwidth setting of the measurement instrument used. Unless the filter has a very sharp roll-off just beyond the audio band or the bandwidth of the measurement instrument is limited, some of the inaudible noise components introduced by the TK2350 amplifier switching pattern will degrade the measurement. One feature of the TK2350 is that it does not require large multi-pole filters to achieve excellent performance in listening tests, usually a more critical factor than performance measurements. Though using a multi-pole filter may remove high-frequency noise and improve THD+N type measurements (when they are made with widebandwidth measuring equipment), these same filters degrade frequency response. The RB-TK2350 Reference Board has a simple two-pole output filter with excellent performance in listening tests.
(See Application Note 4 for more information on bench testing)
Documentation
Soft copies of the schematics and layout can be provided upon request (available in Pads PowerPCB format). Gerber files are also available.
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Technical Information
ADVANCED INFORMATION This is a product in development. Tripath Technology, Inc. reserves the right to make any changes without further notice to improve reliability, function and design. Tripath and Digital Power Processing are trademarks of Tripath Technology. Other trademarks referenced in this document are owned by their respective companies. Tripath Technology, Inc. reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Tripath does not assume any liability arising out of the application of use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. TRIPATH'S PRODUCT ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN CONSENT OF THE PRESIDENT OF TRIPATH TECHONOLOGY, INC. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in this labeling, can be reasonably expected to result in significant injury of the user. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
2.
Contact Information
TRIPATH TECHNOLOGY, INC 2560 Orchard Parkway, San Jose, CA 95131 408.750.3000 - P 408.750.3001 - F For more Sales Information, please visit us @ www.tripath.com/cont_s.htm For more Technical Information, please visit us @ www.tripath.com/data.htm
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RB-TK2350-1, RB-TK2350-2 - MC/Rev. 1.2, 06/02
5
4
3
2
1
J3 CON2
D
J1 3 2 1 BBM0
+5V
D
R206 8.25k FB2 C207 150pF
R205 1k
+5V
R207 1.13k
R208 R222 1k 10k
3
2 1
R204 50k Pot
C40 0.1uF 1 2 3 4 5 6
1 2
+5V
U2 BIASCAP FBKGND2 DCMP FBKOUT2 VPWR FBKGND1 FBKOUT1 HMUTE Y1 Y1B Y2B Y2 NC OCD2 TC2001 INV2 OAOUT2 BBM0 BBM1 MUTE INV1 OAOUT1 V5 AGND VPPSENSE OVRLDB VNNSENSE OCD1 REF 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R120 8.25k R115 249k C60 100pF VNN C332 0.1uF VPP R113 267k +5V J2 1 2 MUTE R101 20k C101 33pF R201 20k C201 33pF
R200 49.9k
C200 2.2uF
J200 1 2 CH 2 Input
R209 8.25k Connect this to PGND2
R210 1.13k
C
+5V R105 1k 2
7 8
C
R100 49.9k +5V R112 267k
C100 2.2uF
J100 1 2 CH 1 Input
R106 8.25k FB1
Y1 Y1B
9 10 11 12 13 14
C107 270pF
R107 1.13k
R108 R122 1k 10k
2 R104 50k Pot 1
D12 Y2B RED Y2 1 OCD2
3
R109 8.25k Connect this to PGND1
R110 1.13k
R30 1k R211 20k C203 220pF
R114 750k
+5V
OCD1
B
C103 220pF
R111 20k
B
A
A
Title Size Date:
5 4 3 2
RB-TK2350-1 Board +/-21V to +/- 39V
Document Number Tuesday, June 11, 2002 Sheet
1
Rev 1.5 1 of 2
5
4
3
2
1
R1 0.01 1W VPP C2 0.1uF
D
2
2
R3 15 1W VPP
C3 3 5 FB1 OUT1 C5 0.1uF R9 20 3W PGND1 L1 11.3UH 10A 10% C10 0.22uF 0.1uF 1
J4 CON3 VNN 1 2 3 R8
R4 15 1W
2
D21 MUR120
M1 STW34NB20 4 1 R5 510k
D2 1
MUR120 2
D1 2
MUR120 1
R2 D23 MUR120 2 C4 0.1uF 1 VPP 0.01 1W C1 0.1uF
M2 STW34NB20 4 1
R6 510k 2.2 1W
R7 C30 2.2 1W + C29 +
5 3
D
FB2 OUT2 C7
2
2
R11 15 1W R16 2.2 1W VN10 C13 0.1uF C14 0.1uF VNN C16 0.1uF D5 MURS120T D9 MURS120T C5A1 0.1uF C20 0.1uF U1 TP2350 NC OCS2LN OCS2LP NC NC VBOOT2 NC NC NC NC NC NC AGND AGND OCD1 OCD2 CSS Y2B Y1B NC NC NC NC NC NC NC NC NC V5 Y2 Y1 NC 32 31 30 29 28 27 26 25 24 23 22 21 20 D8 MURS120T C7A1 100uF C19 100uF D7 MURS120T D10 MURS120T D6 MURS120T
R12 15 1W
2
R31 16 1W
C6 2 33uf M3 STW34NB20 4 1 R13 510k
D3 1
MUR120 2
330uF
330uF
D4 2
MUR120 1
33uf
L2 C32 11.3UH 220pF 10A 10%
C8 0.22uF
C9 0.1uF R10 20 3W RGND2
R15 0.01 1W VNN C11 0.1uF
C31 220pF
M4 STW34NB20 4 1
R32 D24 MUR120 16 1W 1
R14 510k R17 2.2 1W
1
3 5
D22 MUR120
5 3
VNN R18 0.01 1W C12 0.1uF
C
R19 CON2 OUT1 2 1 J5 220
R20 220 1/4W C15 0.1uF C17 47uF
C
CON2 1 2 J6 OUT2
C18 47uF
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34 OCS2HN
OCS1HP
OCS1HN
SUB(VSS)
HO1COM
52 53 54 55 56
B
NC OCS1LN OCS1LP NC NC VBOOT1 NC SW-FB SMPSO NC NC NC NC
57 R301 1k 58 59 C27 0.1uF 60 61 62 VNN D11 B1100DICT 2 1 63 64 R300 10
HO2COM
LO1COM
LO2COM
OCS2HP
NC
NC
NC
VN10
VN10
HO1
HO2
LO1
LO2
NC
33
B
L10 100uH VN10 C300 100uF 1 2
Q1 IRF9500 3
FB Ferrite Bead
C301 0.1uF
10
11
12
13
14
15
16
17
18
VNN
Y2 Y2B
Y1B Y1
Y2B
Y1B
Y2
OCD1
OCD2
Y1
A
C35 0.1uF +5V
19
1
2
3
4
5
6
7
8
9
A
Title Size Date:
5 4 3 2
RB-TK2350-1 Board +/-21V to +/-39V
Document Number Tuesday, June 11, 2002
1
Rev 1.5 Sheet 2 of 2
RB-TK2350-1, TK2350 Reference design Revised: August 28, 2002 Bill of Materials Revision: 1.5 Item Qty Reference
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 4 2 1 2 2 2 6 2 3 3 2 2 1 2 2 2 1 1 4 6 1 1 4 1 1 1 1 1 2 1 1 2 C1,C2,C11,C12 C4,C3 C5, C9 C6,C7 C10,C8 C13,C14 C15,C16,C27,C40, C301,C332 C18,C17 C19,C7A1,C300 C20,C35,C5A1 C29,C30 C31,C32 C60 C200,C100 C101,C201 C103,C203 C107 C207 D1,D2,D3,D4 D5,D6,D7,D8,D9,D10 D11 D12 D21,D22,D23,D24 FB J1 J2 J3 J4 J5,J6 J100 J200 L2,L1
Part
0.1uF 0.1uF 0.1uF 33uf 0.22uF 0.1uF 0.1uF 47uF 100uF 0.1uF 330uF 220pF 100pF 2.2uF 33pF 220pF 270pF 150pF MUR120 MURS120T B1100DICT RED LED MUR120 Ferrite Bead BBM0 MUTE CON2 CON3 CON2 CH 1 Input CH 2 Input 11.3UH
Footprint
cap200 cap300 cap500 CAPE\200\400 cap400 sip-2p-a cap0805 CAPE\100\200 cape\150\330 cap0805 cape\200\500 cap104 cap0805 CAPE\100\200 cap0805 cap0805 cap0805 cap0805 diode smb SMA LED longdiode res-1/8w-short sip-3p sip-2p hdr2p100-75c32d header3-156 hdr2p156-125c75c BLKHEADER BLKHEADER ind10_v
Rating
100V 250V 100V 160V 100V 50V 50V 25V 35V 100V 63V 200V 50V 10V 50V 50V 50V 50V
Manufacturer
PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC KEMET PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC MOTOROLA MOTOROLA DIODES INCORPORATED OPEN MOTOROLA PANASONIC OPEN OPEN WALDOM WALDOM WALDOM WALDOM WALDOM AMERICAN CORES/ AMIDON
Manufacturer P/N
ECQ-E1104KF ECQ-E2104KF ECH-S1104JZ EEU-EB2C330 ECH-S1224JZ C320C104K1R5CA ECJ-2VF1H104Z ECA-1EHG470 EEU-FC1V101 ECJ-2VF1H104Z EEU-FC1J331 ECK-D2H221KB5 ECJ-2VC1H101J ECA-1HHG2R2 ECJ-2VC1H330J ECJV1C1H221J ECU-V1H271KBN ECJ-2VC1H151J MUR120 MURS120T B1100DICT OPEN MUR120 EXC-ELSA352 OPEN OPEN 22-23-2021 26-48-1031 26-60-4020 705-43-0001 705-43-0001 AW1060-06-29T-16-V
Distributor P/N
DK EF1104-ND DK EF2104-ND DK PS1104J DK 5901-ND DK PS1224J-ND DK 399-2048-ND DK PCC1864CT-ND DK P5539-ND DK P10294-ND DK PCC1864CT-ND DK P10349-ND DK P4104A-ND DK PCC101CGCT-ND DK P5564-ND DK PCC330CGCT-ND DK PCC221CGCT-ND DK PCC271BNCT-ND DK PCC151CGCT-ND NWK 08F2006 DK B1100DICT-ND OPEN DK P9820BK-ND OPEN OPEN DK WM4200-ND DK WM4401-ND DK WM4620-ND DK WM4800-ND DK WM4800-ND
10A
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 56 57 58 59 60
1 4 1 4 4 4 4 2 2
L10 M1,M2,M3,M4 Q1 R1,R2,R15,R18 R3,R4,R11,R12 R5,R6,R13,R14 R7,R8,R16,R17 R9,R10 R19,R20
100uH STW34NB20 IRF9510 0.01 15 510k 2.2 20 220 1k 16 49.9k
ind\200\400 to220-up-a TO220V res\500 res\400 res0805 res\400 res3w-vert res-1/4w res0805 res-0.1-stand res0805 res0805 POT3306P res0805 res0805 res0805 res0805 res0805 res0805 res0805 805 QFP64-2 SO28
JW MILLER 200V/34A ST MICROELECTRONICS INTERNATIONAL RECTIFIER 1W OHMITE 1W PANASONIC 1/8W OPEN 1W PANASONIC 3W XICON 1/4W OPEN 1/8W 1W 1/8W 1/8W OPEN OPEN OPEN OPEN BOURNS OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN TRIPATH TRIPATH OPEN OPEN OPEN
6000-101K STW34NB20 IRF9510 12FR010 ERG-1SJ150 ERX-1SJ2R2
DK TK4300-ND
DK 12FR010-ND DK P15W-1BK-ND DK P2.2W-1BK-ND MSR 280-PRM5-20
R30,R105,R108, 6 R205,R208,R301 2 R32,R31 2 R200,R100
4 R101,R111,R201, R211 20k 2 R104,R204 50k Pot R106,R109,R120, 5 R206,R209 8.25k R107,R110,R207, R210 R113,R112 R114 R115 R120 R222,R122 R300 U1 U2 Transistor Mounting 2 Bars 2 Wire Jumper 4 2 1 1 1 2 1 1 1 1 Heatsink for MOSFETs 1.13k 267k 750k 249k 8.25k 10k 10 TP2350 TC2001
3306P-1-503
DK 3306P-503-ND
1/8W 1/8W 1/8W 1/8W 1/8W 1/8W 1/8W
TP2350 TC2001
16 AWG
5
4
3
2
1
J3 CON2
D
J1 3 2 1 BBM0
+5V
D
R206 13.3k FB2 C207 150pF
R205 1k
+5V
R207 1.07k
R208 R222 1k 10k
3
2 1
R204 50k Pot
C40 0.1uF 1 2 3 4 5 6
1 2
+5V
U2 BIASCAP FBKGND2 DCMP FBKOUT2 VPWR FBKGND1 FBKOUT1 HMUTE Y1 Y1B Y2B Y2 NC OCD2 TC2001 INV2 OAOUT2 BBM0 BBM1 MUTE INV1 OAOUT1 V5 AGND VPPSENSE OVRLDB VNNSENSE OCD1 REF 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R120 8.25k R115 392k C60 100pF VNN C332 0.1uF VPP R113 422k +5V J2 1 2 MUTE R101 20k C101 33pF R201 20k C201 33pF
R200 49.9k
C200 2.2uF
J200 1 2 CH 2 Input
R209 13.3k Connect this to PGND2
R210 1.07k
C
+5V R105 1k 2
7 8
C
R100 49.9k +5V R112 422k
C100 2.2uF
J100 1 2 CH 1 Input
R106 13.3k FB1
Y1 Y1B
9 10 11 12 13 14
C107 270pF
R107 1.07k
R108 R122 1k 10k
2 R104 50k Pot 1
D12 Y2B RED Y2 1 OCD2
3
R109 13.3k Connect this to PGND1
R110 1.07k
R30 1k R211 20k C203 220pF
R114 1.18M
+5V
OCD1
B
C103 220pF
R111 20k
B
A
A
Title Size Date:
5 4 3 2
RB-TK2350-2 Board +/-35V to +/- 60V
Document Number Wednesday, June 12, 2002 Sheet
1
Rev 1.5 1 of 2
5
4
3
2
1
R1 0.01 1W VPP C2 0.1uF
D
2
2
R3 15 1W VPP
C3 3 5 FB1 OUT1 C5 0.1uF R9 20 3W PGND1 L1 11.3UH 10A 10% C10 0.22uF 0.1uF 1
J4 CON3 VNN 1 2 3 R8
R4 15 1W
2
D21 MUR120
M1 STW34NB20 4 1 R5 510k
D2 1
MUR120 2
D1 2
MUR120 1
R2 D23 MUR120 2 C4 0.1uF 1 VPP 0.01 1W C1 0.1uF
M2 STW34NB20 4 1
R6 510k 2.2 1W
R7 C30 2.2 1W + C29 +
5 3
D
FB2 OUT2 C7
2
2
R11 15 1W R16 2.2 1W VN10 C13 0.1uF C14 0.1uF VNN C16 0.1uF D5 MURS120T D9 MURS120T C5A1 0.1uF C20 0.1uF U1 TP2350 NC OCS2LN OCS2LP NC NC VBOOT2 NC NC NC NC NC NC AGND AGND OCD1 OCD2 CSS Y2B Y1B NC NC NC NC NC NC NC NC NC V5 Y2 Y1 NC 32 31 30 29 28 27 26 25 24 23 22 21 20 D8 MURS120T C7A1 100uF C19 100uF D7 MURS120T D10 MURS120T D6 MURS120T
R12 15 1W
2
R31 16 1W
C6 2 33uf M3 STW34NB20 4 1 R13 510k
D3 1
MUR120 2
330uF
330uF
D4 2
MUR120 1
33uf
L2 C32 11.3UH 220pF 10A 10%
C8 0.22uF
C9 0.1uF R10 20 3W RGND2
R15 0.01 1W VNN C11 0.1uF
C31 220pF
M4 STW34NB20 4 1
R32 D24 MUR120 16 1W 1
R14 510k R17 2.2 1W
1
3 5
D22 MUR120
5 3
VNN R18 0.01 1W C12 0.1uF
C
R19 CON2 OUT1 2 1 J5 220
R20 220 1/4W C15 0.1uF C17 47uF
C
CON2 1 2 J6 OUT2
C18 47uF
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34 OCS2HN
OCS1HP
OCS1HN
SUB(VSS)
HO1COM
52 53 54 55 56
B
NC OCS1LN OCS1LP NC NC VBOOT1 NC SW-FB SMPSO NC NC NC NC
57 R301 1k 58 59 C27 0.1uF 60 61 62 VNN D11 B1100DICT 2 1 63 64 R300 10
HO2COM
LO1COM
LO2COM
OCS2HP
NC
NC
NC
VN10
VN10
HO1
HO2
LO1
LO2
NC
33
B
L10 100uH VN10 C300 100uF 1 2
Q1 IRF9500 3
FB Ferrite Bead
C301 0.1uF
10
11
12
13
14
15
16
17
18
VNN
Y2 Y2B
Y1B Y1
Y2B
Y1B
Y2
OCD1
OCD2
Y1
A
C35 0.1uF +5V
19
1
2
3
4
5
6
7
8
9
A
Title Size Date:
5 4 3 2
RB-TK2350-2 Board +/-35V to +/-60V
Document Number Wednesday, June 12, 2002
1
Rev 1.5 Sheet 2 of 2
RB-TK2350-2, TK2350 Reference design Revised: December 2, 2002 Bill of Materials Revision: 1.5 Item Qty Reference
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 4 2 1 2 2 2 6 2 3 3 2 2 1 2 2 2 1 1 4 6 1 1 4 1 1 1 1 1 2 1 1 2 C1,C2,C11,C12 C4,C3 C5, C9 C6,C7 C10,C8 C13,C14 C15,C16,C27,C40, C301,C332 C18,C17 C19,C7A1,C300 C20,C35,C5A1 C29,C30 C31,C32 C60 C200,C100 C101,C201 C103,C203 C107 C207 D1,D2,D3,D4 D5,D6,D7,D8,D9,D10 D11 D12 D21,D22,D23,D24 FB J1 J2 J3 J4 J5,J6 J100 J200 L2,L1
Part
0.1uF 0.1uF 0.1uF 33uf 0.22uF 0.1uF 0.1uF 47uF 100uF 0.1uF 330uF 220pF 100pF 2.2uF 33pF 220pF 270pF 150pF MUR120 MURS120T B1100DICT RED LED MUR120 Ferrite Bead BBM0 MUTE CON2 CON3 CON2 CH 1 Input CH 2 Input 11.3UH
Footprint
cap200 cap300 cap500 CAPE\200\400 cap400 sip-2p-a cap0805 CAPE\100\200 cape\150\330 cap0805 cape\200\500 cap104 cap0805 CAPE\100\200 cap0805 cap0805 cap0805 cap0805 diode smb SMA LED longdiode res-1/8w-short sip-3p sip-2p hdr2p100-75c32d header3-156 hdr2p156-125c75c BLKHEADER BLKHEADER ind10_v
Rating
100V 250V 100V 160V 100V 50V 50V 25V 35V 100V 63V 200V 50V 10V 50V 50V 50V 50V
Manufacturer
PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC KEMET PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC MOTOROLA MOTOROLA DIODES INCORPORATED OPEN MOTOROLA PANASONIC OPEN OPEN WALDOM WALDOM WALDOM WALDOM WALDOM COIL WINDING SPECIALISTS
Manufacturer P/N
ECQ-E1104KF ECQ-E2104KF ECH-S1104JZ EEU-EB2C330 ECH-S1224JZ C320C104K1R5CA ECJ-2VF1H104Z ECA-1EHG470 EEU-FC1V101 ECJ-2VF1H104Z EEU-FC1J331 ECK-D2H221KB5 ECJ-2VC1H101J ECA-1HHG2R2 ECJ-2VC1H330J ECJV1C1H221J ECU-V1H271KBN ECJ-2VC1H151J MUR120 MURS120T B1100DICT OPEN MUR120 EXC-ELSA352 OPEN OPEN 22-23-2021 26-48-1031 26-60-4020 705-43-0001 705-43-0001 T106-2 Core
Distributor P/N
DK EF1104-ND DK EF2104-ND DK PS1104J DK 5901-ND DK PS1224J-ND DK 399-2048-ND DK PCC1864CT-ND DK P5539-ND DK P10294-ND DK PCC1864CT-ND DK P10349-ND DK P4104A-ND DK PCC101CGCT-ND DK P5564-ND DK PCC330CGCT-ND DK PCC221CGCT-ND DK PCC271BNCT-ND DK PCC151CGCT-ND NWK 08F2006 DK B1100DICT-ND OPEN DK P9820BK-ND OPEN OPEN DK WM4200-ND DK WM4401-ND DK WM4620-ND DK WM4800-ND DK WM4800-ND 29 turns / 16AWG
10A
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
1 4 1 4 4 4 4 2 2
L10 M1,M2,M3,M4 Q1 R1,R2,R15,R18 R3,R4,R11,R12 R5,R6,R13,R14 R7,R8,R16,R17 R9,R10 R19,R20
100uH STW34NB20 IRF9510 0.01 15 510k 2.2 20 220 1k 16 49.9k 20k 50k Pot 13.3k 8.25k 1.07k 422k 1.18M 392k 10k 10 TP2350 TC2001
ind\200\400 to220-up-a TO220V res\500 res\400 res0805 res\400 res3w-vert res-1/4w res0805 res-0.1-stand res0805 res0805 POT3306P res0805 res805 res0805 res0805 res0805 res0805 res0805 805 QFP64-2 SO28
JW MILLER 200V/34A ST MICROELECTRONICS INTERNATIONAL RECTIFIER 1W OHMITE 1W PANASONIC 1/8W OPEN 1W PANASONIC 3W XICON 1/4W OPEN 1/8W 1W 1/8W 1/8W 1/8W 1/8W 1/8W 1/8W 1/8W 1/8W 1/8W OPEN OPEN OPEN OPEN BOURNS OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN TRIPATH TRIPATH OPEN OPEN OPEN
6000-101K STW34NB20 IRF9510 12FR010 ERG-1SJ150 ERX-1SJ2R2
DK TK4300-ND
DK 12FR010-ND DK P15W-1BK-ND DK P2.2W-1BK-ND MSR 280-PRM5-20
R30,R105,R108, 6 R205,R208,R301 2 R32,R31 2 R200,R100 4 2 5 1 4 2 1 1 2 1 1 1 R101,R111,R201, R211 R104,R204 R106,R109,R206,R209 R120 R107,R110,R207, R210 R113,R112 R114 R115 R222,R122 R300 U1 U2
3306P-1-503
DK 3306P-503-ND
TP2350 TC2001
2 Transistor Mounting Bars 2 Wire Jumper 1 Heatsink for MOSFETs
16 AWG

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