Texas Instruments LM25137-Q1 User Manual

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EVM User's Guide: LM25137F-Q1-EVM5D3
LM25137-Q1 Evaluation Module
Description
The LM25137F-Q1-EVM5D3 evaluation module
(EVM) is designed to showcase the LM(2)5137-Q1
and LM(2)5137 dual, synchronous buck controller,
which is intended for functional safety
to ASIL D or SIL 3. The EVM operates over a wide
input voltage range of 6.5V to 36V to deliver 5V and
3.3V regulated outputs with better than 1% setpoint
accuracy at load currents up to 20A per output.
Get Started
1. Order the LM25137F-Q1-EVM5D3.
2. Refer to the LM5137-Q1
product folders.
3. Review the Altium PCB layout
4. Use the LM(2)5137-Q1
assist with component selection in your design.
Features
• Maximum inout voltage of 36V
– V UVLO thresholds set at 6.5V and 4.5V
IN
• Tightly regulated output voltages of 5V and 3.3V,
each rated at 20A with 1mV load, line regulation
• High efficiency – 96% at 10A, 94% at 20A
– VCC bias power derived from the 5V output
• Switching frequency of 440kHz synchronizable
±20% with an external clock signal
SNVU907A – JULY 2024 – REVISED AUGUST 2024
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LM25137-Q1 EVM, 84mm × 74mm
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• Input π-stage EMI filter meets CISPR 25
– Spread spectrum (DRSS) option for lower 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) operation
• Integrated power MOSFET gate drivers
– 3A/2A sink/source gate drive current capability
– Adaptive dead-time 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 startup
– User-adjustable soft-start time set to 4.5ms
– PG and FAULT outputs for each channel
– Dual current monitor outputs (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
• Dual outputs for ADAS
• Infotainment systems
• Automotive HEV/EV powertrain systems
Description
using
and body electronics
and instrument clusters
LM25137-Q1 Evaluation Module 1