Product Brief HHD25 Series – 20/25A, Half-Brick DC/DC Converter 24V/48V Input Dual Output Features • • • • • • • • • • • • • Applications • • • • • Distributed power architectures Telecommunications equipment LAN/WAN applications Data processing applications 100/85 Watt total output power Independently regulated outputs Flexible load distribution Open-frame design with Insulated Metal Substrate Low profile – 12.7mm height High efficiency - 87% Output voltage tracking Output overcurrent protection Output overvoltage protection Overtemperature protection Setpoint accuracy ± 1.5% Independent output voltage trim, positive or negative Input/output isolation: 1500VDC, basic insulation UL 1950 Recognition, CSA 22.2 No. 950-95 certification, TUV IEC950 Description The HHD25 is a new series of high density Halfbrick size, High current, Dual output DC/DC converters with through-hole mounting. The products provide onboard conversion of standard Telecom and Datacom input voltages to two independently-regulated output voltages. Leading-edge technology provides extremely high efficiency and superior thermal performance which enables the products to deliver full rated power at 55°C ambient temperature with only 200 LFM forced air without addition of a heatsink. The outputs also track each other during both startup and shutdown. Selection Chart Model HHD20ZGE HHD20ZGB HHD25ZED HHD25ZEB HHD20YGE Input voltage range, VDC 36-72 36-72 36-72 36-72 18-36 Input current, max, ADC 3.6 3.6 3.1 3.1 7.2 Output voltage, VDC 5.0/3.3 5.0/1.8 3.3/2.5 3.3/1.8 5.0/3.3 Output rated current, ADC REV. 7/01 www.power-one.com 20/20 20/20 25/20 25/20 20/20 Output Ripple and Noise, mV p-p 100 100 100 100 100 Typical Efficiency % 87 85 85 84 85 Product Brief HHD25 Series – 20/25A, Half-Brick DC/DC Converter 24V/48V Input Dual Output Mechanical Drawing Pin # 1 2 3 4 5 6 7 8 9 10 Bottom (Pin) View Function -Vin Case On/Off +Vin +V2 out V2 Return V2 Trim +V1 out V1 Return V1 Trim Side View .xx ± .020 (.5) .xxx ± .010 (.25) Pin diameter ± .0.002 (.05) Tolerances: Ordering Information Options Remote On/Off Pin Length Suffixes to add to part number Positive- Standard, no suffix required Negative- Add “N” suffix 0.18”- Standard, no suffix required 0.11”- Add “8” suffix 0.15”- Add “9” suffix Notes 1. 2. 3. Consult factory for the complete list of available options. Power-One products are not authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc. Specifications are subject to change without notice. REV. 7/01 www.power-one.com