250W isolated DC-DC converter

Ultra-wide input and regulated single output
 
Description

URF1D_HB-250(H)WR3series  is a high-performance product speccalydesigned for avariety of railway applications. The DC-DC converters feature 50W output power with no requirement for minimum load, wide input voltage from 43-160VDC, and allowing operating temperature as high as 105C. The products also provide input under-voltage protection, output over-voltage, short-circuit and over-temperature protection. Addtional functions include remote On/Off control,remote sense compensation and output voltage trim adjustment. EN5015 approved and they are widely used in railway systems and a sociated equipment.

 
 
 
FEATURES

• Ultra-wide 4: 1 input voltage range: 40 - 160VDC
• High efficiency up to 90%
• Reinforced insulation, I/O isolation test voltage 3k VAC
• Operating ambient temperature range -40C to + 105C
• Input under-voltage protection, output over–voltage, over-current, short-circuit protection, over-temperature protection
• Industry standard 1/2-Brick package and pin-out
• Meets EN50155 railway standard

 
Specifications
 

Input Specifications
Item	Operating Conditions	Min.	Typ.	Max.	Unit
Input Current (full load/no-load)	Nominal input voltage	--	2526/50	2582/70	A
Reflected Ripple Current		--	100	--
Surge Voltage (1sec. max.)		-0.7	--	185	VDC
Start-up Voltage		--	--	40
Input Under-voltage Protection		32	36	--
Start-up Time		--	40	100	ms
Input Filter		Pi filter
Ctrl①	Module on	Ctrl open circuit or connected to TTL high level (3.5- 12VDC)
	Module off	Ctrl pin connected to -Vin or low level (0- 1.2VDC)
	Input current when off	--	5	10	A