Reference Designs
2kW: 48V to 400V: >93% Efficiency: Isolated Bidirectional DC-DC Converter Reference Design for UPS
Texas Instruments
The 2-kW isolated bidirectional DC-DC converter reference design (TIDA-00951) is capable of power transfer between a 400-V DC-BUS and a 12-14 cell lithium battery pack for use in UPS: battery backup and power storage applications. This reference design works as active clamped boost converter with ZVS in the backup mode: transferring power from the 48V battery to the 400V DC-BUS. Operating as a voltage fed full-bridge battery charger: this reference design enables you to achieve >93% efficiency when charging a 48V battery from the 400V DC BUS. This reference design also has built-in protection for DC BUS and battery overcurrent as well as overvoltage protection.
Features
- Digitally controlled isolated bidirectional DC/DC converterOperates as active clamp full bridge boost converter with ZCS turn on along with ZVS at high load for the low-voltage FET and ZVS for high-voltage switchesWide operating range from 36- to 60-V battery and 300- to 400-V DC busCost optimized design using 100-V FET on low-voltage side: eliminates need for paralleling multiple FETs up to 2kWFast mode transfer from battery charging to back-up mode in less than 100uSUses the TMS320F28033 digital controller present on the TIDA-01281 reference design for controlling the workingHigh side current sensing for monitoring the battery current based on the INA240 on-board the TIDA-01141 reference designUses the reinforced isolated gate-driver UCC21520 present in the TIDA-01159 design for driving the high voltage full-bridge
Applications
- DIN rail power supply
- Merchant network & server PSU
- Single phase online UPS
- Merchant telecom rectifiers
- Battery backup unit (BBU)
- Single phase offline UPS
Product Categories
- Power management
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