Shenzhen Mingjiada Electronics Co., Ltd. — long-term supplier of the TI (Texas Instruments) LM5170 multi-phase bidirectional current controller, packaged in an HTQFP-48. This device is designed for bidirectional DC-DC power supplies, 48 V/12 V dual-battery systems and multi-phase current control applications, and is suitable for power supply designs requiring high current scaling, precise current regulation and bidirectional energy flow.
LM5170 is a dual-channel, multi-phase, bidirectional current controller introduced by Texas Instruments (TI) for high-power dual-battery systems. It is housed in a 48-pin HTQFP (PHP, 7 mm × 7 mm) package, with a maximum voltage rating of 100 V for the HV port and 65 V for the LV port. The typical accuracy for both current regulation and channel current monitoring is 1 per cent, and is capable of driving power stages exceeding 500 W per channel. The LM5170-Q1 automotive-grade version is AEC-Q100 certified and complies with the LV 148 requirements for automotive 48 V systems. Mingjiada Electronics stocks the LM5170QPHPRQ1 and supports sample procurement, small-batch trial production and high-volume orders.
In 48 V/12 V automotive dual-battery systems, industrial bidirectional power supplies, battery charge/discharge test equipment and energy storage systems, the LM5170 can be used to implement current direction control, current-loop regulation and multi-phase power distribution. For applications requiring bidirectional operation and demanding current accuracy, this controller provides a comprehensive control foundation.
Key Features of the LM5170
Maximum rated voltages of 100 V and 65 V for the high-voltage (HV) and low-voltage (LV) ports respectively
1% precision bidirectional current regulation
1% precision channel current monitoring
5 A peak half-bridge gate driver
Programmable or adaptive dead-time control
Programmable oscillator frequency, with the option to synchronise to an external clock
Independent channel enable control inputs
Analogue and digital channel current control inputs
Programmable cycle-by-cycle peak current limit
Overvoltage protection for HV and LV ports
Diode emulation to prevent negative current
Programmable soft-start timer
MOSFET fault detection and circuit breaker control during start-up
Multi-phase operation for phase addition/subtraction
The LM5170 is suitable for the following power supply and current control applications:
48V/12V automotive dual-battery systems: for bidirectional DC-DC conversion to enable energy management between two voltage rails.
Industrial bidirectional DC-DC power supplies: for battery charging and discharging, energy recovery and bidirectional power supply systems.
Battery charge/discharge test equipment: Supports current direction switching and precise current regulation.
Supercapacitor and energy storage systems: Used for bidirectional energy management and current control.
Communications power supplies and modular power supplies: Multi-phase parallel operation expands current capacity and optimises ripple and thermal design.
On-board start-stop and auxiliary power systems: Works in conjunction with external power stages to enable bidirectional power flow.
With the continued development of 48V systems, energy storage and bidirectional power applications, the value of multi-phase bidirectional current controllers such as the LM5170 within power supply architectures is gradually increasing. Mingjiada Electronics will continue to leverage its supply chain capabilities to provide customers with supply support for the TI LM5170 (HTQFP-48) and related devices, assisting with product selection, validation and mass production implementation.
For further information on the [TI] LM5170 multi-phase bidirectional current controller or to enquire about sample prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.
Tags: LM5170QPHPRQ1, LM5170QPHPRQ, LM5170QPHP, LM5170QPH, LM5170QP, LM5170Q, LM5170
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