LM5170PHPT

Overview

The LM5170PHPT is a multiphase bidirectional current controller manufactured by Texas Instruments, designed for high-performance synchronous buck-boost applications. It supports boost and buck topologies with two output channels housed in a TQFP-48 package. The device operates within a supply voltage range of 6 V to 85 V and features a programmable switching frequency from 50 kHz to 500 kHz. It accommodates output voltages between 100 mV and 100 V, supporting up to 50 A output current. The maximum duty cycle reaches 99%, and it functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Multiphase bidirectional current control architecture
• Synchronous buck and boost topology support
• Integrated adaptive dead-time adjustment
• Non-isolated power management design

Applications

• Automotive battery management systems
• Industrial power distribution networks
• Bidirectional DC-DC conversion stages

Procurement Notes

Verify the specific suffix PHPT corresponds to the TQFP-48 surface-mount package configuration. Confirm RoHS compliance status through official documentation. Ensure the component matches the standard commercial grade specifications rather than automotive variants. Cross-reference the manufacturer part number against authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this controller for designs requiring wide input voltage ranges and bidirectional energy flow capabilities. Evaluate thermal performance requirements given the 125°C maximum junction temperature limit. Consider the TQFP-48 footprint constraints during PCB layout planning. Verify that the external MOSFET selection aligns with the integrated gate drive strength and switching frequency settings for optimal efficiency.

Part Context

This component belongs to the LM5170 series of power management ICs from Texas Instruments. It serves as a specialized switching controller for complex power conversion tasks. The device integrates advanced control algorithms to manage multiphase operations efficiently. It is categorized under PMIC switching controllers for robust power system implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.