Texas Instruments LMR38020

Description

The LMR38020EVM is a 80 V DC/DC buck regulator that employs synchronous rectification to achieve high conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 6 V to 80 V to provide a regulated 5 V output at 400 kHz switching frequency. The output voltage has better than 1.5% setpoint accuracy and is adjustable using an external resistor divider. The module design uses the LMR38020F synchronous buck converter with wide input voltage (wide VIN) range, wide duty-cycle range, integrated highside and low-side power MOSFETs, cycle-by-cycle overcurrent protection, and precision enable. The LMR38020 converter is available in an 8-pin SO PowerPAD™ package to enable high density, low component count DC/DC solutions. The LMR38020EVM evaluation module is qualified for the LMR38020 as well as the LMR38020-Q1 buck converter.

Features

• Functional Safety-Capable
• Documentation available to aid functional safety system design
• Configured for rugged industrial applications
• Input voltage range:4.2 V to 80 V
• 2-A continuous output current
• Ultra-low 40-µA operating quiescent current

• 1.5-mm distance between VIN and GND pin

• Adjustable switching frequency from 200 kHz to 2.2 MHz
• Frequency synchronization to external clock
• Spread spectrum option for reduced EMI
• 97% maximum duty cycle
• Support start-up with pre-biased output -±1.0% tolerance voltage reference at room temperature
• Precision enable
• Easy to use with low BOM count
• Integrated synchronous rectification
• Internal compensation for ease of use
• 8-pin HSOIC with PowerPAD™ package
• PFM and forced PWM (FPWM) options
• Create a custom design using the LMR38020 with the WEBENCH® Power Designer

Typical applications

• Wireless infrastructure and networking
• Industrial transport, Power delivery, Factory automation and control

More information

• Datasheet
• IC product information