750W DIP Type High Input DC/DC Converter : DHFB750

DHFB750 - 750 Watts Full Brick Type 2:1 High Input Voltage Isolated DC - DC Converters


Regulated Output DC-DC Converter- Isolation - Module

Our DHFB750 series is high efficiency 750W isolated and regulated output. The dimension is 4.6" x 2.4" x 0.5" meet industrial standard Full brick size. They provide a 300Vdc nominal input (with an input range of 200 to 425Vdc) and 3000VAC reinforced isolation, which are suitable for distributed power architectures, telecommunications, servers, base station, battery operated equipment, and industrial applications.
  • 750W,Isolated Output DC-DC
  • Regulated Outputs
  • Efficiency up to 91%
  • 2:1 Input Range
  • Industry Full-Brick package: 4.60" x 2.4" x 0.5"
  • Fixed Switching Frequency
  • Input Under Voltage Protection
  • Over Temperature Protection
  • Over Voltage/Current Protection
  • Industry Full-Brick Package
  • Single Wire Parallel
  • Remote On/Off
  • Fully Isolation 3KVAC
Input Voltage Range Nominal 300V Range: 200-425V
Undervoltage Lockout 300Vin power up ... 195V ; power down ... 180V
Logic Remote On/Off open collector refer to -Vin
Positive Remote Logic.
Logic Low (Module OFF) .................< 1.2V
Logic High (Module ON).................. Open circuit or 3.5~75V
Negative Remote Logic.
Logic High (Module OFF)................. Open circuit or 3.5~75V
Logic Low (Module ON) .................< 1.2V
Input Filter C Type
Voltage Accuracy ± 1% max
Transient Response 25% step load change...... < 500 µs
External Trim Adj. Range(Refer toMechanical Drawing Figure1 and Figure2) 60~110% Load
Share Accuracy ±10% at 50% to 100% Full Load
Auxiliary Output Voltage/Current 10±VDC/200mA max.
R&N (20MHz BW measured with 1uF ceramic capacitor and 1000uF aluminum capacitor across output) 12V & 15V ........... 150 mV RMS, 300mV pk-pk max.
24V & 28V ........... 300 mV RMS, 600mV pk-pk max.
36V ....................... 300 mV RMS, 650mV pk-pk max.
48V ....................... 350 mV RMS, 750mV pk-pk max.
Temperature Coefficient ± 0.03% / °C max.
Short Circuit Protection Continuous
Line Regulation(Measured from high line to low line.) ± 0.2% max
Load Regulation(Measured from full load to zero load.) ± 0.5% max
O.V.P. Trip Range, % Vo nom 115% ~ 140%
O.C.P (Current Limit) 105% ~ 125% Nominal
Output Start up time 50ms typ.
Isolation Voltage
Input/Output ... 3000VAC min.
Input/Case ... 2500VAC min.
Output/Case ... 500VAC min.
Switching Frequency 200 KHz Tpy.
Isolation Resistance 10MΩ min
Operating Case Temperature -40°C to 85°C
Storage Temperature -55°C to 125°C
Thermal Shutdown, Case Temp. 95°C Typ.
Humidity 95% RH max. Non Condensing
MTBT MIL-HDBK-217F, GB 370Khrs typ.
Case Material Aluminum Baseplate with Plastic Case
Dimensions L4.60xW2.40xH0.50 inches (116.8x61x12.7mm)
Weight 230g

Model No. I/P Vol. O/P Vol. O/P Current O/P Watts (max.)
DHFB750-C2 200~425VDC 12.00 VDC 62.50A 750W
DHFB750-C3 200~425VDC 15.00 VDC 50.00A 750W
DHFB750-C9 200~425VDC 24.00 VDC 31.20A 748.8W
DHFB750-C9C 200~425VDC 28.00 VDC 26.70A 747.60W
DHFB750-C9A 200~425VDC 36.00 VDC 20.80A 748.8W
DHFB750-C9B 200~425 VDC 48.00 VDC 15.60A 748.8W
DHFB750-C2N 200~425VDC 12.00 VDC 62.50A 750W
DHFB750-C3N 200~425VDC 15.00 VDC 50.00A 750W
DHFB750-C9N 200~425VDC 24.00 VDC 31.20A 748.8W
DHFB750-C9CN 200~425VDC 28.00 VDC 26.70A 747.60W
DHFB750-C9AN 200~425VDC 36.00 VDC 20.80A 748.8W
DHFB750-C9BN 200~425VDC 48.00 VDC 15.60A 748.8W

Ordering Information:

  1. Nominal Input Voltage 300 VDC.
  2. The Output Terminal Required a Minimum Capacitor 1000uF to Maintain Specified Regulation.
Mechanical Drawing (Unit: mm)


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