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Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Features
* * * * * * * * * * 48vin, Isolated, 4:1 Fixed Conversion Ratio (12v Nominal Out) 240watt Max Output Parallel For Higher Output Power 10% Current Share Accuracy Over-Temperature Protection 96% Efficiency Remote Enable (Primary Side) Positive or Negative Enable Logic el Mod Current Limit nt eme Industry Standard 1/4 Brick Footprint lac
UCT ROD P TEr Rep OLEry fo cto OBSct FaUser is responsible for providing system protection. This product is not fuse protected. a
C Consult factory for application information.
Input Characteristics Input Voltage Operating Range Input Voltage Absolute Maximum Input Undervoltage Lockout Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected Ripple Current (2) Inrush Current Transient Enable - Negative Logic Version Internal 10K pull-up to 6.2V Enable - Positive Logic Version Internal 100K pull-down to gnd On State Range Off State Range On State Range Off State Range Table 2: Output Characteristics Output Voltage Set Point Output Load Regulation Output Voltage Total Regulation Output Ripple Voltage & Noise (3) Output Current Operating Range (4) Efficiency Turn-on Time Io=20A, Vin=48V (See curves) Vin present: Enable to 90% Vout 20 MHz Bandwidth 0 95.6 10 Notes and Conditions (1) (Vin/4) +1% / -1% (Vin/4) + 1% / -5% -5 8.5 90 Min Typ 12 -3 1 13.9 150 20 Max Units Vdc % Vdc mVp-p A % mS -0.6 0.8 0.8 -0.6 0.20 0.7 6.2 6.2 0.7 Turn-on Threshold Turn-off Threshold Steady-State (20Amp output) Enable state, on Load (48Vin) Disabled State (48V input) 36.5 34.5 5.1 72 21 50
ont
Table 1: Notes and Conditions (1) Min 36 Typ 48 Max 55 60 37.6 35.5 Units Vdc Vdc Vdc Vdc Adc mA mA mArms A2s Vdc Vdc Vdc Vdc
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QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Typ Max 150 100 3000 Units mV S F
Table 2: Output Characteristics Transient Response (5) Maximum Output Capacitance Notes and Conditions (1) 5A Step 0.1A/S, Vo Recovery Time Max Table 3: Protection Characteristics Output Overcurrent Inception Limit Output Overcurrent Shutdown (Latching after second re-try) Short Circuit Current Overtemperature Shutdown Restart Rate Peak Notes and Conditions (1) Min 20 Typ 27 1700 30 125 10 Max 30 Units Adc mS Apk C C Min
Overtemperature Restart Hysteresis
General Characteristics Isolation Voltage Isolation Resistance
UCdTl D ROment Mo e P TEr Replace OLEry fo BSct Facto Oa
Non-Latching Table 4: Notes and Conditions (1)
Min
Typ
Max 2000 125 85
Units Vdc Mohm C C
t Con
Input to Output
Input to Output Non-condensing UL 60950-1, IEC 60950-1, TUV 60950-1 UL 94V-0 Calculated (RAC PRISM) 50C Demonstrated
10 -40 -40
Storage Temperature Range Operating Temperature Range Agency Approvals Material Flammability MTBF
1.56 3.0 2.30"L x 1.45"W x 0.45"H 35
x106 Hrs x106 Hrs g
Dimensions Weight
Horizontal
Notes: 1. Vin = 48Vdc, Ta = 20C, Airflow = 200LFM unless otherwise noted. 2. Input Reflected Ripple Current is specified when measured with a 120F 63V electrolytic capacitor across the input pins. 3. Output Ripple Voltage is specified when measured with a 270F electrolytic and a 10F ceramic capacitor at the converter output pins. 4. De-rating curves are conducted in a controlled environment. End application testing is required to ensure the hot spot temperature is below the maximum specified. Recommended airflow direction is input to output or cross-wise. For output to input airflow subtract 3A from derating curves. 5. Transient response is specified with 270F electrolytic and 10F ceramic at the converter output pins.
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www.cd4power.com
4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 2 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Mechanical Information - Horizontal
UCdTl D ROment Mo e P TEr Replace OLEry fo OBSct Facto a
t Con
Figure 1
Pin Assignment - Horizontal
Table 5: Pin # 1 2 3 4 6 Pin Name VIN+ ON/OFF VINVOUTVOUT+ Function Vin 36 to 55 Vdc Referenced to VinPrimary return Secondary return Output, 12V nominal, 20Amp max Notes & Conditions
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4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 3 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Efficiency Curves
Efficiency vs Iout
98 96 Eff% 94 92 90 88 0 2 4 6
Vin = 36V Vin = 48V Vin = 42V Vin = 55V
8 10 12 14 16 18 20 22 24 I out(A)
Vout vs. Load
UCdTl D ROment Mo e E Pplace LErTfor Re BScOacto y O a tF
Figure 2
Vout vs Iout 14 13 t Con 12 11 10 9 8 7 6 0 2 4 6
Vin = 36V Vin = 48V Vin = 42V Vin = 55V
Vout (V)
8 10 12 14 16 18 20 22 24 I out(A)
Figure 3
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4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 4 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Derating - Horizontal Mount
Vin = 36V 200LFM Load Current (A) 30 25 20 15 20 40 60 80 Ambient Temp (C) 300LFM 400LFM Load Current (A) 30 25 20 15 20 40 60 80 Ambient Temp (C) 200LFM Vin = 48V 300LFM 400LFM
Vin = 42V 200LFM Load Current (A) 30 25 20 15 20 40 300LFM 400LFM
Vin = 55V 200LFM 27 25 23 21 19 17 15 Load Current (A) 300LFM 400LFM
Ambient Temp (C)
CTl ODnU ode R E Pplaceme t M LErTfor Re BScOacto y O a tF
60 80
20
30
40
50
60
70
80
Ambient Temp (C)
Power Curves at 200LFM
Output Power (W)
t Con 300
250 200 150 20
Vin = 36V Vin = 48V
Vin = 42V Vin = 55V
30
40
50
60
70
80
Ambient Temp (C)
Figure 4
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www.cd4power.com
4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 5 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Thermal Performance - Horizontal Mount
Start up from Enable
UCdTl ODnt Mo e R E Pplaceme LErTfor Re BScOacto y O a tF
Figure 5
t Con
Vin = 48V, Iout = 20A
Figure 6
Vin = 48V, Iout = 0A
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4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 6 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Transient Response
Iout 10A to 15A at 0.1A/S CH1 Vout 50mV/div, CH2 Iout 5A/div
UCdTl D Output Voltage Ripple ROment Mo e P TEr Replace OLEry fo OBSct Facto a
Figure 7
t Con
Vin = 48V, Iout = 20A; BW = 20MHz
Figure 8
1150 Eglinton Avenue East Toronto, Ontario M3C 1H7 1-866-740-1232
www.cd4power.com
4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 7 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Input Ripple
UCdTl D ROment Mo e P= 20MHz 5mA/div Vin = 48V, Iout E20A; BW place = TE OLtory for Re OBSct Fac a
Figure 9
t Con
1150 Eglinton Avenue East Toronto, Ontario M3C 1H7 1-866-740-1232
www.cd4power.com
4607 S.E. International Way Milwaukie, Oregon 97222 1-971-206-2800 8 of 9
QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
DC/DC Converter BUS CONVERTER 48Vin, 12Vout @ 20A
Ordering Information
QUS20-120-NHDR
Quarter Brick Outline Unregulated Single Output Output Current 20 = 20A Output Voltage 120 = 12V Reserved for Internal Use Pin Length(L) D = 0.180" Form Factor H = Horizontal Enable Logic N = Negative
Manufacturing p/n: 073-20859-40C
The 073-20859-40C Bus Converter is in compliance with the European Union Directive 2002/95/EC (RoHS) with respect to the following substances: lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE). ont
UCdTl D ROment Mo e P TEr Replace OLEry fo BSct Facto Oa
C
RoHS Process Note
This product is not intended to go through a reflow solder process. Use wave solder, selective solder or hand solder process with a peak temperature of 260C for 10 seconds.
C&D Technologies, Inc. reserves the right to alter or improve the specification, internal design or manufacturing process at any time, without notice. Please check with your supplier or visit our website to ensure that you have the current and complete specification for your product before use. (c) C&D Technologies, Inc. 2004 No part of this publication may be copied, transmitted, or stored in a retrieval system or reproduced in any way including, but not limited to, photography, photocopy, magnetic or other recording means, without prior written permission from C&D Technologies, Inc. Instructions for use are available from: www.cd4power.com
4118 14th Avenue, Unit 4 Markham, Ontario L3R 0J3 1-905-944-2850
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QUS20-120-NHDR_084-20859-00_RevK_Jan30-2006.fm

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