Texas Instruments LM5148 | Demoboard PMP23392

Description

This reference design utilizes two LM5148-Q1 single-phase synchronous buck controllers and four LMG3100R017 GaN FETs configured as a dual phase, interleaved, synchronous buck converter. The converter generates a regulated 5V output capable of delivering a nominal 30A of current to the load, with a peak current capability of 60A, accepting an input voltage of between 24Vin to 60Vin (48Vin nominal). The design is built on a 6-layer PCB with 2oz copper for each of the six layers. The evaluation board measures 5.0in × 3.4in (127.00mm × 86.36mm); however, the actual converter design size measures approximately 53.5mm × 52.0mm. This board is optimized for high efficiency across the entire load current range, which is achieved by configuring the converter to run in Pulse Frequency Modulation (PFM) mode at light loads.

Features

• Small design size
• High efficiency
• Spread-spectrum switching reduces EMI
• Interleaved two-phase operation reduces ripple voltages and RMS currents

Typical applications

• Conditionally automated drive controller, • Surround view system ECU, ADAS domain controller

More information

• Datasheet
• IC product information