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

Ordering Information：

1. Nominal Input Voltage 300 VDC.
2. The Output Terminal Required a Minimum Capacitor 1000uF to Maintain Specified Regulation.