Bidirectional high density GaN CCM totem pole PFC using C2000™ MCU
Description
This reference design is a 3.-kW bidirectional interleaved continuous conduction mode (CCM) totem-pole (TTPL) bridgeless power factor correction (PFC) power stage using a C2000™ real-time controller and LMG3410R070 gallium nitride (GaN) with integrated driver and protection. This power topology is capable of bidirectional power flow (PFC and grid-tied inverter) and it uses LMG341x GaN devices: which enables higher efficiency and reduction in size of the power supply. The design supports phase shedding and adaptive dead time for efficiency improvements: input cap compensation scheme for improved power factor at light loads: and non-linear voltage loop to reduce voltage spikes under transient in PFC mode. The hardware and software available with this reference design accelerates time to market.
Features
- PFC mode: AC input (90-230 Vrms): 50-60 Hz and 3.3-KW rated power at high lineGrid-tied inverter mode: DC input (Up to 400 V) and 3.3-KW rated power at high line98.75% peak efficiency and less than 2% total harmonic distortion (THD)In-built frequency response analyzer (SFRA) for verification and design of control loopsLow zero crossing distortionHigh power density design enabled by both GaN and C2000 controller high frequency operation
Applications
- String inverter
- Micro inverter
- Three phase UPS
- AC charging (pile) station
- Power conversion system (PCS)
- Single phase online UPS
- Merchant telecom rectifiers
- Battery cell formation & test equipment
- 1-phase AC-digital control
- 3-phase AC-digital control
- DC-fast charging
- Portable power station
- Server PSU with 12-V output
Product Categories
- C2000 real-time microcontrollers