High voltage 800-W SEPIC converter reference design for server battery backup charging
Description
This discontinuous conduction mode (DCM) non-isolated 800-W SEPIC converter battery charger reference design provides an adjustable output voltage and current. The output voltage can be adjusted from 282 V to 400 V by setting an external DC voltage between 0 V to 3 V. The output charging current can be adjusted between 0 A to 2 A by adjusting the duty cycle of a PWM input. It operates over an input voltage range of 340 Vdc to 420 Vdc. Independent voltage and current feedback loops are used to maintain regulation.
Features
- High efficiency of 97 % at 800 W (380 Vin: 400 Vout at 2 A)Accurate voltage (1 %) and current (2 %) regulationEasily interfaced with DAC or microprocessor or can be manually controlledSiC FET and rectifier minimize ringing and switching lossesCompact PCB size (116 mm x 95 mm)
Applications
- Rack server motherboard
Product Categories
- Power management
| Application Area | End Equipment |
|---|---|
| Rack server motherboard | https://www.ti.com/solution/rack-server-motherboard#referencedesigns |