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HIP1090
March 1995
Protected High Side Power Switch with Transient Suppression
Description
The HIP1090 is a Protected Power Interface Switch designed to suppress potentially damaging over-voltage transients with peak voltage source inputs ranging up to 90V in amplitude. It is designed to be operated in a `hardwired' pass-thru mode or as a high side power switch which controls the current flow through a PNP pass transistor of the IC. In either mode The HIP1090 has a low saturated forward voltage drop. The protected load circuit is connected to the output of the IC. As such, the HIP1090 operates as a transient suppressor where the PNP drive transistor is switched off when VIN is greater than the Over-Voltage Shutdown range of 16V to 19V. Shutdown also occurs when VIN is less than the forward turn-on threshold of approximately 2.5V, including the negative voltage range. The merits of transient suppression depend on the required integrity of the applications load elements. Instrument panel signal warning lights for critical functions such as overtemperature or low fluid levels can be protected by the HIP1090 against high level transient voltages and double battery conditions that may potentially cause bulb burnouts. The HIP1090 may be used to protect the power supplies of small signal or logic circuits with voltages ranging from 4V to 16V, effectively blocking higher peak voltages. The HIP1090 has internal current limiting protection in the range of 1A to 2A for short circuit to ground conditions and thermal shutdown protection when the junction temperature is greater than 150oC. It is capable of driving resistive, inductive or lamp loads (such as lamps No. 168 or 194) with minimum risk of damage under harsh environmental stress conditions. The HIP1090 is supplied in a 3 lead TO-220AB package.
Features
* * * * 90V Transient Suppression 4V to 16V Operating Voltage 1A Current Load Capability Low Input-Output Voltage Drop With Controlled Saturation Detector for - Fast Low Current Turn-OFF - Reduced No-Load Idle Current Over-Voltage Shutdown Protection Short Circuit Current Limiting Over-Temperature Limiting Protected Thermal Limiting at TJ = +150oC
* * * *
* -40oC to +125oC Operating Temperature Range
Applications
* * * * Electronic Circuit Breaker Transient Suppressor Over-Voltage Monitor High Side Driver Switch for - Relays - Solenoids - Heaters - Motors - Lamps
Ordering Information
PART NUMBER HIP1090AS TEMPERATURE RANGE -40oC to +125oC PACKAGE TO-220AB SIP
Pinout
HIP1090 (SIP) TOP VIEW
NOTE: HEAT SINK TAB INTERNALLY CONNECTED TO PIN 2 1 23
Functional Block Diagram
1 VIN (VCC OR VBATT) RS 0.02 3 VOUT (TO LOAD)
THERMAL LIMIT
CURRENT LIMIT
OVERVOLTAGE SHUTDOWN
BASE CURRENT AMPLIFIER
VCESAT DETECTOR
2 VCON (CONTROL OR GND) VOUT (LOAD) VIN (SUPPLY) VCON (CONTROL)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 407-727-9207 | Copyright (c) Intersil Corporation 1999
File Number
3398.3
9-22
Specifications HIP1090
Absolute Maximum Ratings
Input (Supply) Voltage, VIN (Control Pin Reference) . . . . . . . . 24V Transient Max Voltage, VIN (15ms) . . . . . . . . . . . . . . . . . . . . . 90V Load Current, IOUT . . . . . . . . . . . . . . . . . . . . Short Circuit Protected
Thermal Information
Thermal Resistance JA JC Plastic SIP Package . . . . . . . . . . . . . . . . 50oC/W 4oC/W Maximum Power Dissipation, (Note 4) At TA = +105oC, Infinite Heat Sink. . . . . . . . . . . . . . . . . . . 11.25W Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150oC Ambient Temperature Range . . . . . . . . . . . . . . . . -40oC to +125oC Storage Temperature Range. . . . . . . . . . . . . . . . . . -40oC to +150oC Lead Temperature (Soldering During). . . . . . . . . . . . . . . . . . +265oC 1/16 1/32 inch (1.59 0.79mm) from case for 10s maximum
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications TA = -40oC to +125oC; VIN = 4V to 16V; VCON = GND or 0V, Unless Otherwise Specified
PARAMETERS Input (Supply) Voltage Operating Range Input Voltage Threshold for Forward Turn-On to Load Input Voltage for Output Shutdown Output Shutdown Leakage Output Cutoff Leakage Thermal Shutdown Temperature Maximum Output Transient Pulse Current Maximum Control Transient Pulse Current Short Circuit Current Input-to-Output Voltage Drop SYMBOL VIN VTHD VSHSD ILEAK1 ILEAK2 TSD IOUT(Tran) ICON(Tran) ISC VIN = 4V, IOUT = 175mA VIN = 9V, IOUT = 500mA VIN = 16V, IOUT = 800mA VIN = 16V, IOUT = 1A Control Current ICON VIN = 16V, IOUT = 100mA VIN = 16V, IOUT = 800mA VIN = 16V, IOUT = 1A Turn ON (Rise Time); "Pass-Thru" Mode Turn OFF (Fall Time); "Pass-Thru" Mode Turn ON (Rise Time); High Pass Switch Mode Turn OFF (Fall Time); High Pass Switch Mode tON Switch VIN 0V(GND) to 5.5V; Measure VOUT (to 90%); Load = 1k (Note 3) Switch VIN 5.5V to 0V(GND); Measure VOUT (to 90%); Load = 1k (Note 3) See Figure 3 and Figure 4 (Note 3) See Figure 3 and Figure 4 (Note 3) VIN = 90V for 15ms, VOUT = 14V VIN = 90V for 15ms, VOUT = 14V TEST CONDITIONS (Note 1); Also, See Figure 4 for Expanding VIN Range Load = 1k (Note 2) VIN = 19V and 24V; Load = 1k VIN = 16V; Control Open; Load = 1k MIN 4 16 -20 -50 1 TYP 2.5 1 150 0.8 50 MAX 16 19 100 +20 +50 2 0.25 0.65 1.05 25 50 20 UNITS V V V A A
o
C
mA mA A V V V V mA mA mA s
tOFF
-
-
20
s
tON tOFF
-
15 15
-
s s
NOTES: 1. The Input Operating Voltage is not limited by the threshold of Shutdown. The VIN voltage may range to 24V while the normal functional switching range is typically +2.5V to +17.5V (reference to VCON). 2. The Output Drive is switched-off when the Input voltage(Supply pin), referenced to the Control pin exceeds the threshold shutdown VSHSD or the input voltage is less than the forward turn-on threshold (Including negative voltages within the transient peak ratings). 3. TON and TOFF times include Prop Delay and Rise/Fall time. 4. The worst case thermal resistance,JC for the SIP TO-220 is 4oC/W. The calculation for dissipation and junction temperature rise due to dissipation is: PD = (VIN -VOUT) + (VIN)(ICON ) TJ = TAMBIENT + (PD) (JC) for an infinite Heat Sink. Derating from 150oC is based on the reciprocal of thermal resistance, JC+HS. For example: Where JC = 4oC/W and given HS = 6o/W as the thermal resistance of an external Heat Sink, the junction-to-air thermal resistance, JA = 10oC/W. Therefore, for the maximum allowed dissipation, derate 0.1W/oC for each degree from TAMB to the maximum rated junction temperature of 150oC. If TAMB = 100oC, the maximum PD is (150 - 100) x 0.1W/oC = 5W.
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HIP1090 Applications
The HIP1090 may be used as a "hard-wired pass-thru" device to protect the load from source voltage transients or may be used as an active high side power interface switch with up to 1A of Load current capability. An ON state condition of (VIN - 4V) VCON (VIN - 16V) is the normal range required to activate the high pass switch, allowing the supply source to conduct through the PNP to the load. When the control terminal, VCON is open, the high pass switch is open (no conduction). Figure 2 shows an HIP1090 application example with a switch in the VCON terminal. In comparison to the hard wired circuit of Figure 1 where pin 2 is fixed at ground, pin 2 in the circuit of Figure 2 is switched from open to ground to turn-ON the high pass switch. Used in this mode, the HIP1090 is both an effective transient suppressor and a high pass switch. The switch in the VCON terminal may be active or passive and conducts typically less than 50mA of current. The HIP1090 used in the controlled switching mode retains all of the protected features of the device. In either circuit the output capacitor may be increased in size to hold charge longer during transient interruptions at the input. The charge duration for larger capacitors or for lamp loads is tolerated because of the internal short circuit current limiting protection. Sustained short circuits may cause the junction temperature to reach the thermal shutdown temperature (150oC).
INPUT 1
VIN
RS
VOUT
3 0.47F
DASH PANEL LOAD TO OTHER LIGHTS AND INSTRUMENTS
LAMP
RADIO
SWITCH VBATT THERMAL LIMIT CURRENT LIMIT OVERVOLTAGE SHUTDOWN BASE CURRENT AMPLIFIER
VCESAT DETECTOR
2 VCON (CONTROL OR GND)
FIGURE 1. TYPICAL APPLICATION OF THE HIP1090 AS A TRANSIENT SUPPRESSOR IN A "PASS-THRU" MODE
INPUT 1 VBATT
VIN
RS
VOUT
3 0.47F TO 1000F
LOAD
THERMAL LIMIT
CURRENT LIMIT
OVERVOLTAGE SHUTDOWN
BASE CURRENT AMPLIFIER
VCESAT DETECTOR
2
VCON (CONTROL) ON
NOTE: VLOAD = VBATT - VSAT VSAT TYP < 0.8V at 1A
OFF SWITCH
FIGURE 2. TYPICAL APPLICATIONS OF THE HIP1090 AS A TRANSIENT SUPPRESSOR IN A HIGH PASS SWITCH MODE
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HIP1090
Figure 3 shows the pulsed output switching characteristics of the HIP1090 as a high side driver. A small delay step is noted on the rising edge due to the hold-off of a VCESAT detector circuit. The VCESAT circuit senses the saturation level of the PNP pass transistor and controls the drive as a ratio of load current. As the load current is reduced, the drive current to the output transistor is reduced. Under low current operation, the saturation level is controlled and the turn-OFF switching time is much faster. The control switching element is shown as a 2N5320 NPN transistor but may be any open collector or MOS gate. A pull-up resistor of 2k is used for a slight improvement in the turnoff fall time but is not an essential requirement. The VCON terminal may be controlled with a mechanical switch or may be controlled from any driver output that can sink the worst case condition of pin 2 current, ICON when the output load current is increased to 1A (typically 50mA).
VOUT HIP1090 (OUTPUT) 24 VCON (CONTROL PIN) 1k ON VB 2N5320 OR EQUIVALENT OFF ON
The circuit of Figure 4 shows how the HIP1090 transient suppression voltage shutdown threshold may be increased by using a zener diode from the VCON terminal to the collector terminal of the transistor switch. The preferred method is to use a zener diode for a fixed level shift. While a resistor in place of the zener diode having the same voltage drop will work well, the parametric variation of the ICON current will cause variations of the Over-Voltage Shutdown Threshold. In this circuit, a 10V zener provides a typical over-voltage threshold shift to ~27V. The threshold for over-voltage shutdown is referenced to the (VIN - VCON) voltage difference.
VOUT HIP1090 (OUTPUT) 24 VCON 10V 1k 2N5320 OR EQUIVALENT
+24V (SUPPLY INPUT) 2k OPTIONAL
VIN
+16V (SUPPLY INPUT) 2k OPTIONAL
VIN
FIGURE 4. A TYPICAL APPLICATION CIRCUIT THAT USES A ZENER TO THE VCON TRANSISTOR SWITCH TO RAISE THE OVER-VOLTAGE SHUTDOWN THRESHOLD
OFF
15 10 5 0 TON 15s ON OFF VB TOFF 15s VOUT
Also, it is important to note that high peak current values may be reached when driving nonlinear and inductive loads. The peak output current of the HIP1090 is self limiting in the 1A to 2A range to protect against short circuit conditions. Sustained high peak current may increase the junction temperature to 150oC and cause thermal shutdown. When this happens, the output current will fall off briefly before recovering, unless the over-temperature condition is sustained. Internally, both input and output over-voltage conditions are sensed to protect the circuit, making the high levels of transient voltage ratings possible. Sustained voltage ratings of 24VDC with transient ratings to 90V allow a wide variety of applications in high stress environments. Except for the VCESAT detector circuit, the HIP1090 is a higher current version of the CA3273 high side driver, which turns-on without the delayed step on the leading edge of the output pulse; switching with a typical TON time of ~0.5s. The CA3273 has a higher transient suppression threshold.
FIGURE 3. TYPICAL ON-OFF SWITCHING CHARACTERISTIC OF THE HIP1090 USING AN NPN TRANSISTOR TO SWITCH THE VCON INPUT TERMINAL
9-25
HIP1090 Typical Performance Curves
60 CONTROL CURRENT (PIN 2) (mA) CONTROL CURRENT (PIN 2) (mA) TA = +25oC 50 40 30 20 10 00 RLOAD = 16 VCON = GND 30 TA = +25oC 25 20 15 10 5 0 5 10 VIN SUPPLY VOLTAGE (V) 15 20 VOUT OPEN VCON = GND
0
5
10 VIN SUPPLY VOLTAGE (V)
15
20
FIGURE 5. CONTROL (QUIESCENT) CURRENT CHARACTERISTIC WITH LOAD
FIGURE 6. CONTROL (QUIESCENT) CURRENT CHARACTERISTIC WITH NO LOAD
VSAT = (VIN - VOUT) VOLTAGE (mV)
TA = +25oC 1000 800 RLOAD = 16 VCON = GND
600
400
200
0 0 0.5 1.0 1.5 LOAD CURRENT (A)
FIGURE 7. SATURATION (VIN - VOUT) CHARACTERISTIC
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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Sales Office Headquarters
NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (407) 727-9207 FAX: (407) 724-7240 EUROPE Intersil SA Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 ASIA Intersil (Taiwan) Ltd. Taiwan Limited 7F-6, No. 101 Fu Hsing North Road Taipei, Taiwan Republic of China TEL: (886) 2 2716 9310 FAX: (886) 2 2715 3029
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