LM5170QPHPTQ1 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LM5170QPHPTQ1
Manufacturer

TI
ChipWorker Part#

CW4283477
Package

TQFP-48
Description

BI DIRECTIONAL 48V TO 12V CURREN
Documentation

Datasheet

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LM5170QPHPTQ1 Specifications

Attribute	Attribute Value

Part Number	LM5170QPHPTQ1
Manufacturer	TI
ChipWorker Part#	CW4283477
Documentation	Datasheet
Number of Pins	48 Pin
Case/Package	TQFP-48
Number of Outputs	2 Output
Switching Frequency	100kHz ~ 600kHz
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Operating Temperature	-40℃ ~ 150℃ (TJ)
Product Lifecycle Status	Active
RoHS	RoHS Compliant
Lead-Free Status

Product 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-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.
An innovative average current mode control scheme maintains constant loop gain allowing a single R-C network to compensate both buck and boost conversion. The oscillator is adjustable up to 500 kHz and can synchronize to an external clock. Multiphase parallel operation is achieved by connecting two LM5170-Q1 controllers for 3- or 4-phase operation, or by synchronizing multiple controllers to phase-shifted clocks for a higher number of phases. A low state on the UVLO pin disables the LM5170-Q1 in a low current shutdown mode.

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