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LM5160-Q1
SNVSA...
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Reference Design
LM5160-Q1
SNVSAE4C – JULY 2015 – REVISED OCTOBER 2018
LM5160-Q1 Wide Input 65-V, 2-A Synchronous Buck / Fly-Buck™ DC/DC Converter
1 Features
1 AEC-Q100 Qualified for Automotive Applications – Temperature Grade 1: –40°C ≤ TA ≤ 125°C – HBM ESD Classification Level 2 – CDM ESD Classification Level C5
Wide 4.5-V to 65-V Input
Voltage Range Integrated High-Side and Low-Side Switches
– No External Schottky Diode Required 2-A Maximum Load Current Meets CISPR 25 EMI Standard Adaptive Constant On-Time Control
– No External Loop Compensation – Fast Transient Response Selectable Forced PWM or DCM Operation – FPWM Supports Multi-Output Fly-Buck™ Nearly Constant Switching Frequency – Resistor Adjustable up to 1 MHz Programmable Soft-Start Time Prebiased Start-Up ±1% Feedback
Voltage Reference Inherent Protection Features for Robust Design – Peak Current Limiting Protection – Adjustable Input UVLO and Hysteresis – VCC and Gate Drive UVLO Protection – Thermal Shutdown Protection With Hysteresis 14-Pin HTSSOP Package, 0.65-mm Pitch Create a Custom Design Using the LM5160-Q1 With the WEBENCH® Power Designer
Typical Synchronous Buck Application Circuit
VIN VIN BST
LM5160-Q1 SW
VOUT
RON
EN/UVLO
FB VCC
SS FPWM
AGND PGND
2 Applications
Automotive DC/DC Converter IGBT Gate Drive Bias Supply Low-Power Isolated DC/DC (Fly-Buck)
3 Description
The LM5160...