Texas Instruments LM5175PWP | Demoboard LM5175RHF

Description

The LM5175RHFEVM-HD demonstrates a compact buck-boost design using the LM5175 highperformance 4-switch buck-boost controller. This evaluation module is designed to operate with inputvoltage from 5 V to 42 V and provide a regulated 12 V output with load current up to 6 A. The transitionregion control method of the LM5175 maintains high efficiency over the entire operating input voltage incontrast with a conventional four-switch buck-boost converter which has a drop in efficiency at VIN close toVOUT. The switching frequency is set at 400 kHz and can be synchronized to an external clock signal. Theboard specifications are listed

Features

Smooth Buck-Boost Operation

• Ultra-high (>98%) peak power conversion efficiency
• High power density compact design
• Adjustable output voltage using TRIM
• Resistor programmable switching frequency (adjustable) with optional external synchronization (SYNC)up to 600 kHz
• Cycle-by-cycle overcurrent protection via shunt resistor current sensing
• Optional hiccup mode overload protection (off by default)
• Default forced PWM (CCM) fixed switching operation with option to set diode emulation mode (DCM)
• Programmable VIN UVLO threshold and hysteresis
• Spread spectrum dither option for reduced EMI
• Power Good indicator
• Input circuit damping and energy storage provided by bulk electrolytic capacitor
• Easy access to PGOOD, ENABLE, TRIM and SYNC using conveniently located test points

More information

• Datasheet
• IC product information