CHB350 SERIES 231 TO 350 WATT 2:1 INPUT DC-DC CONVERTERS SINGLE OUTPUT FEATURE *231 - 350W Isolated Output * Efficiency to 92.5% * Fixed Switching Frequency * Input under-voltage Protection * Over Temperature Protection * Over Voltage/Current Protection * Remote ON/OFF * Industry Standard Half-Brick Package * Fully Isolated 1500VDC MODEL INPUT OUTPUT NUMBER VOLTAGE VOLTAGE MIN. MAX. NO LOAD FULL LOAD (%) LOAD MAX. 3.3VDC 0mA 70A 130mA 10.94A 88 10000F CHB350-24S3V3 18-36VDC OUTPUT CURRENT INPUT CURRENT EFF. CAPACITIVE CHB350-24S05 18-36VDC 5VDC 0mA 70A 250mA 16.29A 89.5 10000F CHB350-24S12 18-36VDC 12VDC 0mA 29.2A 220mA 15.96A 91.5 10000F CHB350-24S24 18-36VDC 24VDC 0mA 14.6A 40mA 16.22A 90 10000F CHB350-24S28 18-36VDC 28VDC 0mA 12.5A 50mA 16.03A 91 7000F(2) CHB350-48S3V3 36-75VDC 3.3VDC 0mA 70A 80mA 5.41A 89 10000F CHB350-48S05 36-75VDC 5VDC 0mA 70A 120mA 8.01A 91 10000F CHB350-48S12 36-75VDC 12VDC 0mA 29.2A 100mA 7.89A 92.5 10000F CHB350-48S24 36-75VDC 24VDC 0mA 14.6A 40mA 7.98A 91.5 10000F CHB350-48S28 36-75VDC 28VDC 0mA 12.5A 30mA 7.88A 92.5 7000F(2) NOTE: 1. Nominal Input Voltage 24, 48 VDC 2. The output terminal of 28Vout models required a minimum capacitor 100uF to maintain specified regulation. 1 SPECIFICATIONS All Specifications Typical At Nominal Line, Full Load, and 25 Unless Otherwise Noted INPUT SPECIFICATIONS: GENRAL SPECIFICATIONS: Input Voltage Range ............................. 24V ................. 18-36V 48V .................. 36-75V Efficiency .............................................................................. See Table Isolation Voltage ................ Input/Output .................... 1500VDC min. Input Surge Voltage (100ms max.) .............. 24V ............. 50Vdc max. 48V .......... 100Vdc max. Input/Case, Output/Case ..... 1500VDC min. Isolation Resistance ...................................................... 10^7 ohm min. Under voltage lockout ................ 24Vin power up ..................... 17V 24Vin power down .................. 16V 48Vin power up ...................... 35V Isolation Capacitance .................................................. 1000pF Typ. 48Vin power down .................. 33V Operating Case Temperature ..................................... -40 to 100 Switching Frequency ......................... 3V3&5V ..................... 300KHz Typ. 12V&24V&28V .......... 330kHz Typ. Positive Logic Remote ON/OFF ( see note 4 & 5 ) Storage Temperature ................................................ -55 to +105 Input Filter ..................................................................... PI Type Thermal Shutdown, Case Temp ...................................... 110 Typ. OUTPUT SPECIFICATIONS: Humidity .................................................... 95% RH max. Non condensing Voltage Accuracy: .............................................................. 1.5% max. MTBF..........MIL-STD-217F, GB ..................................... T.B.D. hrs Transient Response:25% Step Load Change ................... <500u sec. Dimensions ......................... 2.28x2.40x0.52 inches (57.9x61.0x13.2 mm) External Trim Adj. Range, (note6) ......................................... 10% Ripple & Noise, 20MHz BW Case Material .............................. Aluminum Baseplate with Plastic Case Weight ............................................................................... 114g 3.3V & 5V ........................... 40mV RMS, max. NOTE: 100mV pk-pk, max. 1. Measured From High Line to Low Line 12V ................................. 60mV RMS, max. 2. Measured From Full Load to Zero Load 120mV pk-pk, max 3. Output Ripple and Noise measured with 10uF tantalum and 1uF 24V &28V....................... 100mV RMS, max. Ceramic capacitor across output 280mV pk-pk, max 4. Logic Compatibility .................. Open Collector ref to -Input Temperature Coefficient ................................................... 0.03%/C Module ON Short Circuit Protection .................................................... Continuous Module OFF ........... < 1.2Vdc Line Regulation (note 1) .................................................. 0.2% max. .......... >3.5Vdc to 75Vdc or Open Circuit 5. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF Load Regulation (note 2) ................................................ 0.2% max. Module ON Over Voltage Protection trip Range ,% Vo nom. .................. 115-140% Module OFF ........... >3.5Vdc to 75Vdc or Open Circuit Current Limit ....................................... 105% ~140% Nominal Output .......... < 1.2Vdc 6. Trim-up..............connect a resistor between the trim pin and +Sense Start up time ............................................................. 175ms typ. Trim-down...........connect a resistor between the trim pin and -Sense 7.The input terminal recommend to parallel with 220uF for 48Vin and 470uF for 24Vin ESR<0.7 to reduce the input ripple voltage. CASE HB All Dimensions In Inches(mm) Tolerances Inches: X.XX= 0.02 , X.XXX= 0.010 Millimeters: X.X= 0.5 , X.XX=0.25 Mounting Inserts BOTTOM VIEW M3*0.5 Through 4pl. Pin 1 2 3 4 5 6 7 8 9 REMOTE ON/OFF CONTROL Function +Vin ON/OFF CASE -Vin -Vout -Sense Trim +Sense +Vout EXTERNAL OUTPUT TRIM ON/OFF (2) HIGH SIGNAL HERE DISABLE OUTPUT -VIN (4) 2