Texas Instruments PFC23338EVM-107 Evaluation Motherboard
Texas Instruments PFC23338EVM-107 Evaluation Motherboard is a Gallium nitride (GaN) based, 3.6kW, single-phase, continuous conduction mode (CCM) totem-pole bridgeless power factor correction (PFC) converter targeting an M-CRPS server power supply. This design includes e-meter functionality with 0.5% accuracy using AMCx306 as a current sensing device, eliminating the need for external power metering ICs. An alternative cost-optimized current sensing option using TMCS1133 is also provided in this design. The supply is designed to support a maximum input current of 16ARMS and peak power of 3.6kW. The power stage is followed by a baby boost converter, which helps to reduce the size of the bulk capacitor.
This design works with TI GaN half-bridge daughter cards (e.g., LMG3522EVM-042, LMG3422EVM-043, LMG3650EVM-113). LMG3522R030, LMG3422R030, and LMG3650R025 are 25mΩ to 30mΩ high-voltage GaN FETs with integrated drivers and protections that enable high efficiency and high power density. The F28003x C2000™ real-time microcontroller is used for all the advanced controls, including re-rush current limit, baby boost operation during AC dropout events, e-metering, and communication between PFC and house-keeping controller. In addition, the F28003x microcontroller has a built-in sigma-delta filter module to interface with the AMC1306 precision current sensing reinforced isolated modulator to achieve low total harmonic distortion (iTHD) and high measurement accuracy. The PFC operates at a switching frequency of 65kHz and achieves a peak efficiency of 98.93%.
Features
- Integrated e-metering function with 0.5% accuracy
- <10% iTHD at 0 to 10% load, <5% iTHD at 10% to 20% load, <3% iTHD at 20% to 50% load, <2% iTHD at 50% to 100% load
- Peak efficiency of 98.93% at 230VAC
- Smart re-rush current control when AC comes back from dropout meets M-CRPS re-rush current specifications
- Included baby boost converter to extend holdup time and allow only a 720µF bulk cap
- Two current sense options: isolated delta-sigma modulator (default) or Hall sensor
- GaN optimized with driver integration
- 3.6kW rated power targeting 73.5mm M-CRPS PSU
Applications
- Rack and server PSU with 48V output
- Server PSU with 12V output
- Merchant telecom rectifiers
- Industrial AC-DC
- Single-phase online UPS
Kit Contents
- PFC motherboard and PMP20306C (400V to 12V and 5V isolated output) included
- GaN daughtercard and C2000 daughtercard are not included and must be ordered separately
Additional Resource
Board Layout
Development Tools
Texas Instruments TMDSCNCD280039C ControlCARD Evaluation Module
Low-cost evaluation and development board for the TI C2000™ MCU series of F28003x devices.
Texas Instruments LMG342xEVM-04x Half-Bridge Daughter Card
The daughter card configures two LMG342xR0x0 GaN FETs in a half-bridge.
Texas Instruments LMG3650EVM Daughter Card Evaluation Modules
Supports two LMG3650R025 GaN FETs with an integrated driver & protection in a half-bridge package.