LM5170-Q1 Texas instruments

LM5170-Q1

Уточнить цену

LM5170-Q1

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

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-bridge gate drivers are capable of driving parallel MOSFET switches delivering 500 W or more per channel. The diode emulation mode of the synchronous rectifiers prevents negative currents but also enables discontinuous mode operation for improved efficiency with light loads. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, MOSFET failure detection and overtemperature protection.

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

Topology	Boost, Buck
Vin (min) (V)	3
Vin (max) (V)	85
Vout (max) (V)	85
Vout (min) (V)	6
Duty cycle (max) (%)	99
Switching frequency (min) (kHz)	50
Switching frequency (max) (kHz)	500
Iq (typ) (mA)	1
TI functional safety category	Functional Safety-Capable
Features	Adjustable UVLO, Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Multiple Outputs, Phase Interleaving, Power good, Synchronous Rectification, UVLO adjustable
Iout (max) (A)	50
Operating temperature range (°C)	-40 to 150
Rating	Automotive
Type	Controller