PRELIMINARY
IRH-W80 Series
10:1Input 250Watt Encapsulated Half-Brick
Isolated DC-DC Converter
Output Voltage (V) Output Current (A) Input Voltage Range (V)
12 21 16-160
24 10.5 16-160
54 4.5 16-160
Optimized for embedded applications on railway rolling stock environments, the IRH-W80 DC-DC Converter
range offers 250W single output from a 10:1 ratio input voltage range in an industry standard half brick
solution.
Typical unit
PRODUCT OVERVIEW
FEATURES
The IRH-W80 series of isolated regulated con- features Overvoltage, Overcurrent, short circuit, and
Efficiency up to 91% @ 72Vin, 12Vout
verter modules, deliver an impressive 250W single Overtemperature protection. Other features include
Ultra wide input range: 16V-160V
output from an ultra wide input voltage range of adjustable Undervoltage lockout protection,
Output voltages of: 12V, 24V or 54V
16V 160V DC, complying with the input battery adjustable Current limit threshold, Positive or
voltage transient ranges of EN50155 (2017). The Negative Logic enable and a Hold Up Pin to allow
Vout external trim adjustment
industry standard half brick package offers high connection of an external capacitor.
Output power 250W
efficiency levels up to 91%. The fully isolated
Half-brick Package Dimension, Inches (mm):
(4242Vdc) DC-DC module accepts a wide input
2.39 x 2.49 x 0.55 (63.1 x 60.6 x 13)
voltage range of 16V 160VDC, while maintaining
OVP, OCP, OTP. a fully regulated single output. The output voltage
Positive or Negative Remote ON/OFF.
Operating Baseplate Temp. -40C to +100C
4242VDC input to output reinforced isolation.
Hold up time (10-30mS)
UVLO Set up (resistor programmable)
Conformally Coated PCB
Encapsulated for harsh environment
Meets requirements for EN50155
SAFETY FEATURES
4242Vdc input to output isolation
Reinforced isolation
UL 60950-1, 2nd Edition
IEC/EN60950-1, 2nd edition
RoHS compliant
Encapsulated Half-Brick
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
SDC_IRH-W80 Series.A01.D17 Page 1 of 16
IRH-W80 Series
PRELIMINARY
10:1Input 250Watt Encapsulated Half-Brick
Isolated DC-DC Converter
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE [1] [2]
Output Input
Efficiency Package
Ripple & Noise Regulation [3]
Root Model [1]
Vout Iout Power Vin Nom. Vin Range Iin, no load Iin, full load
(mV pk-pk) (max.)
(V) (A, max.) (W) (V) (V) (mA) (A)
Typ. Max. Line Load Typ. Case (mm)
IRH-12/21-W80 12 21 250 150 300 0.2% 0.2% 72 16-160 60 20 91% 63.1 x 60.6 x 13
IRH-24/10.5-W80 [4] 24 10.5 250 300 300 0.25% 0.25% 72 16-160 60 20 90% 63.1 x 60.6 x 13
In Development [4] 54 4.5 250 TBD TBD TBD TBD 72 16-160 TBD TBD TBD 63.1 x 60.6 x 13
Notes:
[1] Please refer to the Part Number Structure when ordering.
[2] All specifications are at nominal line voltage and full load, +25C unless otherwise noted. See detailed specifications. Output capacitors are 1 F ceramic multilayer in parallel with
10 F. I/O caps are necessary for our test equipment and may not be needed for your application.
[3] Regulation specifications describe output voltage deviations from a nominal/midpoint value to either extreme (50% load step).
[4] The 24Vout and 54Vout models are currently in development.
PART NUMBER STRUCTURE
IRH 12 21 W80 N B1 - C
- / -
C = RoHS Compliant
IRH = Industrial Rail Half-brick
Mounting Baseplate:
12 = Nominal Output Voltage (Vdc) B = Threaded Hole
B1 = Non-threaded Hole
21 = Nominal Output Current (A)
On/Off Logic:
W80 = 10:1 Input Voltage Range
N = Negative
(16~160Vdc, Nominal 72V)
P = Positive
www.murata-ps.com/support
SDC_IRH-W80 Series.A01.D17 Page 2 of 16