1-kW, 80 Plus titanium, GaN CCM totem pole bridgeless PFC and half-bridge LLC reference design
TIDA-010062
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- 1-kW, 80 Plus Titanium, GaN CCM Totem Pole Bridgeless PFC and Half-Bridge LLC (Rev. C)
(PDF 8481 KB)
27 Apr 2021
Description
This reference design is a digitally controlled, compact 1-kW AC/DC power supply design for server power supply unit (PSU) and telecom rectifier applications. The highly efficient design supports two main power stages, including a front-end continuous conduction mode (CCM) totem-pole bridgeless power factor correction (PFC) stage. The PFC stage features LMG341x GaN FET with integrated driver to provide enhanced efficiency across a wide load range and meet 80 plus titanium requirements. The design also supports a half-bridge LLC isolated DC/DC stage to achieve a +12-V dc output at 1-kW. Two control cards use C2000™ Piccolo™ microcontrollers to control both power stages.
Features
- 80 Plus Titanium efficiency, η=>95% @ 20%-100% load
- CCM GaN based totem pole bridgeless PFC stage with >99% peak efficiency, enabled by LMG341x GaN FET with integrated driver
- Half-bridge Si MOSFET LLC stage with >98% peak efficiency
- Fast load transient, Vo change within 300mV @ 2.5A/us slew rate
- Low iTHD, <10%@10% load, <5% @ 20% load, <2% @ >50% load
- Power density 41W/in3, 38-mm by 66-mm by 160-mm
See the Important Notice and Disclaimer covering reference designs and other TI resources.
What's Included
- Board of the power stage
Not Included
- Daughter card for LMG3410-HB-EVM
- Daughter card for TMDSCNCD280049C
