LM5170-Q1

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 hig...