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LM5170-Q1

Part Number	LM5170-Q1
Manufacturer	Texas Instruments
Description	Multiphase Bidirectional Current Controller
Published	Nov 26, 2019
Detailed Description	LM5170-Q1 SNVSAQ6D – NOVEMBER 2016 – REVISED AUGUST 2021 LM5170-Q1 Multiphase Bidirectional Current Controller 1 Featur...
Datasheet	LM5170-Q1 PDF File

Overview

LM5170-Q1 SNVSAQ6D – NOVEMBER 2016 – REVISED AUGUST 2021 LM5170-Q1 Multiphase Bidirectional Current Controller 1 Features • AEC-Q100 qualified for automotive applications: – Device temperature grade 1: –40°C to +125°C ambient operating range – Device HBM ESD classification level 2 – Device CDM ESD classification level C4B • Functional Safety-Capable – Documentation available to aid functional safety system design • 100-V HV-port and 65-V LV-port max ratings • 1% Accurate bidirectional current regulation • 1% Accurate channel current monitoring • 5-A Peak half-bridge gate drivers • Programmable or adaptive dead-time control • Programmable oscillator frequency with optional synchronization to external clock • Independent channel enable control inputs • Analog and digital channel current control inputs • Programmable cycle-by-cycle peak current limit • HV and LV port overvoltage protection • Diode emulation prevents negative current • Programmable soft-start timer • MOSFET failure detect at start-up and circuit breaker control • Multiphase operation phase adding or dropping HV-Port (48 V) +10 V Bias HO1 SW1 LO1 PGND VCC VIN CSA1 VINX CSB1 RAMP1 OVPA LM5170-Q1 RAMP2 SYNCOUT ISETD SYNCIN ISETA DIR EN1 EN2 HO2 SW2 LO2 IOUT1 IOUT2 IPK OSC AGND OVPB CSB2 CSA2 LV-Port (12 V) 2 Applications • Automotive dual-battery systems • Super-cap or battery backup power converters • Stackable buck or boost converters 3 Description The LM5170-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for automotive 48-V and 12-V dual battery systems.
It regulates the average current flowing between the high voltage and low voltage ports in the direction designated by the DIR input signal.
The current regulation level is programmed through analog or digital PWM inputs.
Dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical current accuracy of 1%.
Robust 5-A half-bridg...

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LM5170-Q1 Multiphase Bidirectional Current Controller - Texas Instruments

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