1
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CHB75 SERIES
37.5 TO 75 WATT WIDE INPUT
DC-DC CONVERTERS
SINGLE OUTPUT
FEATURES
* 37.5W-75W Isolated Output
* Efficiency to 89%
* 300KHz Switching Frequency
* 2:1 Input Range
* Regulated Outputs
* Continuous Short Circuit Protection
* Five-Sided Metal Case
* Half-Brick size meet industrial standard
* CE Mark Meets 2006/95/EC, 93/68/EEC, and 89/336/EEC
* Safety Meets UL60950-1, EN60950-1, and IEC60950-1
* UL60950-1 and EN60950-1 Approval
MODEL
NUMBER INPUT
VOLTAGE OUTPUT
VOLTAGE
OUTPUT CURRENT INPUT CURRENT ％
EFF. Capacitor
Load max.
MIN. MAX. NO LOAD FULL LOAD
CHB75-12S25 9 -18 VDC 2.5 VDC 0 mA 15 A 50 mA 4110 mA 76 10000uF
CHB75-12S33 9 -18 VDC 3.3 VDC 0 mA 15 A 50 mA 5290 mA 78 10000uF
CHB75-12S05 9 -18 VDC 5 VDC 0 mA 15 A 50 mA 7530 mA 83 10000uF
CHB75-12S12 9 -18 VDC 12 VDC 0 mA 6.25 A 50 mA 7183 mA 87 10000uF
CHB75-12S15 9 -18 VDC 15 VDC 0 mA 5 A 50 mA 7267 mA 86 4000uF
CHB75-12S24 9 -18 VDC 24 VDC 0 mA 3.13 A 50 mA 7183 mA 87 2000uF
CHB75-24S25 18-36 VDC 2.5 VDC 0 mA 15 A 50 mA 2029 mA 77 10000uF
CHB75-24S33 18-36 VDC 3.3 VDC 0 mA 15 A 50 mA 2578 mA 80 10000uF
CHB75-24S05 18-36 VDC 5 VDC 0 mA 15 A 50 mA 3720 mA 84 10000uF
CHB75-24S12 18-36 VDC 12 VDC 0 mA 6.25 A 50 mA 3551 mA 88 10000uF
CHB75-24S15 18-36 VDC 15 VDC 0 mA 5 A 50 mA 3551 mA 88 4000uF
CHB75-24S24 18-36 VDC 24 VDC 0 mA 3.13 A 50 mA 3551 mA 88 2000uF
CHB75-48S25 36-75 VDC 2.5 VDC 0 mA 15 A 50 mA 1015 mA 77 10000uF
CHB75-48S33 36-75 VDC 3.3 VDC 0 mA 15 A 50 mA 1273 mA 81 10000uF
CHB75-48S05 36-75 VDC 5 VDC 0 mA 15 A 50 mA 1860 mA 84 10000uF
CHB75-48S12 36-75 VDC 12 VDC 0 mA 6.25 A 50 mA 1755 mA 89 10000uF
CHB75-48S15 36-75 VDC 15 VDC 0 mA 5 A 50 mA 1775 mA 88 4000uF
CHB75-48S24 36-75 VDC 24 VDC 0 mA 3.13 A 50 mA 1755 mA 89 2000uF
NOTE: 1. Nominal Input Voltage 12, 24 or 48VDC
2
+SENSE (8)
TRIM (7)
- SENSE (6)
TRIM UP
TR IM D OWN
+SENSE (8)
TRIM (7)
- SENSE (6)
10K ohm s
TRIMPOT
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted
INPUT SPECIFICATIONS: GENRAL SPECIFICATIONS:
Input Voltage Range ....…………….......... 12V ..................... 9-18V Efficiency .................…..................................……..........…....... See Table
24V ....................... 18-36V Isolation Voltage .................... Input/Output ....………...….. 1500VDC min.
48V ........……........ 36-75V Input/Case .………..…….….. 1500VDC min.
Input Surge Voltage (100ms max.) …….….… 12V …........... 25Vdc max. Output/Case ………………… 1500VDC min.
24V ............… 50Vdc max. Isolation Resistance .............................…......... ...... ......…….... 1 07 ohm min.
48V ..….……. 100Vdc max Isolation Capacitance …………………..…………………....…… 1000pF Typ.
Undervoltage lockout : Switching Frequency ....... (12/24)Vin .………….............. 400KHz, Typ.
12Vin ….………… power up ---->8.8V, power down ----->8V 48Vin ........................................ 300KHz, Typ.
24Vin …………… power up ---->17V, power down ----->16V Operating Case Temperature …………………………….. -40℃ to 100℃
48Vin ….……… power up ---->34V, power down ----->32.5V Storage Temperature ………………....…....……............ -55℃ to +105℃
Positive Logic Remote ON/OFF ( see note 3 & 4 ) Thermal Shutdown, Case Temp. .…….………….……..……. 100℃ Typ.
Input Filter …………………………………………..…………... PI Type Humidity .................................................... 95% RH max. Non condensing
OUTPUT SPECIFICATIONS: MTBF ………. MIL-STD-217F, GB, 25℃, Full Load ………… 1000khrs Typ.
Voltage Accuracy: ...........................................……….......... ±1.0% max. Dimensions ................…….. 2.28×2.40x0.50 inches (57.9x61.0×12.7 mm)
Transient Response:25% Step Load Change .…………….… <500 u sec. Case Material ................…................………….……………….. Aluminum
External Trim Adj. Range ………………..……………………….. ±10 % Weight …………………………………………………………………….. 92g
Ripple & Noise, 20MHz BW(see note 5) NOTE:
2.5 & 3.3V & 5V ……….….... 20mV RMS, max. 1. Measured From High Line to Low Line
75mV pk-pk, max. 2. Measured From Full Load to Zero Load
12V & 15V ……………..……. 30mV RMS, max. 3. Logic Compatibility …….. Open Collector ref to -Input
100mV pk-pk, max Module ON ……………………………………………. Ope n Circuit
24V ………………….……… 100mV RMS, max. Module OFF …………………………………………..…... < 0.8Vdc
240mV pk-pk, max. 4. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF
Temperature Coefficient ....................……….. ................…..... ±0.03%/°C 5. Output Ripple and Noise measured with 10uF tantalum and 1uF ceramic
Short Circuit Protection .........………………........................... Continuous capacitor across output
Line Regulation (see note 1) ……....................................…. ±0.2% max. 6. Suffix “-C” to the Model Numbe r with Clear Mounting Insert (3.2mm DIA.)
Load Regulation (see note 2) ……............……….................. ±0.2% max.
Over Voltage Protection trip Range, % Vo nom. ..................... 115-140%
Current Limit ...................……………….... 110% ~150% Nominal Output
Start up time ……………………………….……… …………..…... 5 ms Typ.
6Trim
+Sense
+Vout
9
7
8
BOTTOM VIEW
M3*0.5 Through 4pl.
Function
ON/OFF
CASE
-Vin
-Vout
-Sense
+Vin
3
4
5
Pin
1
2
Mounting Inserts
Millimeters: X.X= ±0.5 , X.XX=±0.25
All Dimensions In Inches(mm)
CASE HB
Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010
REMOTE ON/OFF CONTROL EXTERNAL OUTPUT TRIM
ON/OFF (2)
-VIN (4)
HIGH SIGNAL HERE
D ISABLE OUTPUT
