This reference design is a 1.1kW, high-density, 48V to 12V closed-loop bus converter based on a two-phase buck for enterprise computing. The design achieves approximately 98% peak efficiency. The design uses the LMG3100R017, one of TI's high-performance gallium nitride (GaN) power stage devices. The control circuitry uses the UCD3138A, a high-performance microcontroller in a 40-pin quad flat no-lead (QFN) package.
Features
- High power density with a high peak (about 98%+) and full load efficiency
- Transformer-less regulated topology
- Low bill of materials (BOM) cost
- Easy to implement in a chip-down design in quarter brick form factor (36.8mm × 58.4mm × 18mm)
- 12V–48V boost configurable
- PMBus® compatible
- Scalable design for higher power (2kW+): TIDA-050095