Texas Instruments LM5137F-Q1 User Manual

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EVM User's Guide: LM5137F-Q1-EVM12V
LM5137F-Q1 12V, 20A Single-Output Evaluation Module
Description
The LM5137F-Q1-EVM12V evaluation module
(EVM) is designed to showcase the LM5137F-Q1
synchronous, buck controller, which is intended for
functional safety applications up to ASIL D. The EVM
operates as a two-phase interleaved design over an
input voltage range of 36V to 72V to deliver a 12V
regulated output at up to 20A.
Get Started
1. Order the LM5137F-Q1-EVM12V.
2. Refer to the LM5137F-Q1
product folders.
3. Review the Altium PCB layout
4. Use the LM5137F-Q1
assist with component selection in your design.
5. Simulate the design using
Features
• Maximum input voltage of 72V
– V UVLO thresholds set at 42V (on), 36V (off)
IN
• Tightly regulated output voltage of 12V rated at
20A with 1mV load and line regulation
• High efficiency: 95.5% at 48V
– VCC bias power derived from the 12V output
• Switching frequency of 400kHz synchronizable
±20% with an external clock signal
• Input π-stage EMI filter helps meet CISPR 25
SNVU891 – FEBRUARY 2025
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and LM5137-Q1
source files.
quickstart calculator to
PSPICE or SIMPLIS.
, 20A
IN OUT
LM5137F-Q1 EVM, 84mm × 74mm
Copyright © 2025 Texas Instruments Incorporated
– Spread spectrum (DRSS) option for lower
electromagnetic interference (EMI)
– Electrolytic capacitor for parallel damping
• Peak current-mode control architecture provides
fast line and load transient response
– Integrated slope compensation
– Forced PWM (FPWM) or pulsed frequency
modulation (PFM) mode operation
• Integrated power MOSFET gate drivers
– 3A sink, 2A source gate drive current capability
– Adaptive deadtime control reduces power
dissipation and MOSFET temperature rise
• Integrated protection features for robust design
– Overcurrent protection (OCP) with shunt or
inductor DCR current sensing
– Monotonic prebias output voltage start-up
– User-adjustable soft-start time set to 4.5ms
– PG and FAULT outputs for each channel
– Current monitor output (IMON1, IMON2)
• Fully assembled, tested and proven PCB layout
with 3.3" × 2.9" (84mm × 74mm) total footprint
Applications
• High-current automotive electronic systems
2, 3, and 4-phase implementations
• Advanced driver assistance systems (ADAS)
body electronics
• Infotainment systems
• Automotive HEV/EV powertrain systems
LM5137F-Q1 12V, 20A Single-Output Evaluation Module
Description
using
and
and instrument clusters
1