HBC25ZH-NT Datasheet, PDF (1/7 Pages) Power-One – HBC DC-DC Series Data Sheet 300-Watt Half-Brick Converters

HBC DC-DC Series Data Sheet
300-Watt Half-Brick Converters
Applications
• Intermediate Bus architectures
• Telecommunications equipment
• LAN/WAN applications
• Data processing applications
Features
• High efficiency up to 94%
• High power density – 110 W/in³
• High current rating - 25A
• Low profile – 12.7mm height
• Input/output isolation: 1500VDC
• Basic insulation
• Start-up into high capacitive load
• Low conducted and radiated EMI
• Output overcurrent protection
• Output overvoltage protection
• Overtemperature protection
• Remote sense
• Remote on/off (primary referenced), positive
or negative logic option
• Adjustable output voltage from 9.6V to 13.2V
• UL 1950 Recognition, CSA 22.2 No. 950-95
certification, TUV IEC950
Description
The HBC Series of high density bus converters convert a worldwide telecom bus voltage of 36 to 75VDC to a
12V bus at 25A. The output is ideal for powering non-isolated, point-of-load converters such as synchronous
buck converters used commonly in intermediate bus architectures.
The unit's open-frame, two-board construction provides ideal thermal transfer for maximum reliability. Power
devices are mounted on an Insulated Metal Substrate (IMS) base plate with very low thermal impedance. The
control PCB is physically isolated from the hotter IMS board, providing lower overall component temperatures for
high reliability. The standard feature set includes remote on/off, remote output voltage sensing, positive output
trim, input undervoltage lockout, and overtemperature shutdown with hysteresis.
Model Selection
Model
Input
Voltage
VDC
HBC25ZH
36-75
Input
Current,
Max
ADC
10
Output
Voltage
Vout,
VDC
12.0
Output rated
Current
I rated,
ADC
25
Output
Ripple/Noise,
mV p-p
150
Typical
Efficiency @
I rated, %
92
REV. DEC 15, 2003
www.power-one.com
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