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Shenzhen Mingjiada Electronics Co., Ltd. supplies TI LM25122QPWPRQ1 LM25122-Q1 AEC-Q100 Compliant Synchronous Boost Controller with Multi-Phase Functionality for Wide Input Voltage from 3V to 42V

Product Description

The LM25122-Q1 wide input voltage, synchronous boost controller is a synchronous boost controller with multi-phase support for high efficiency synchronous boost regulator applications. The control method is based on peak current mode control. Current mode control provides internal line feedforward, cycle-by-cycle current limiting, and simplified loop compensation. The switching frequency can be set up to 600 kHz, and higher efficiency is achieved by two robust N-channel MOSFET gate drivers that support adaptive dead-time control. A user-selectable diode emulation mode also enables intermittent mode operation for improved efficiency at light loads.

Features

AEC-Q100 qualified with the following results:

Device Temperature Class 1: -40°C to +125°C ambient operating temperature range

Device Human Body Model (HBM) Electrostatic Discharge (ESD) Classification Level 2

Device Charging Device Model (CDM) ESD Classification Level C6

Maximum Input Voltage: 42V

Minimum input voltage: 3V (4.5V at start-up)

Output voltage up to 50V

Bypass (VOUT=VIN) operation

1.2V reference, ±1.0% accuracy

Free running with synchronised switching up to 600kHz

Peak current mode control

Stable 3A integrated gate driver

Adaptive dead-time control

Selectable diode emulation mode

Programmable cycle-by-cycle current limit

Intermittent mode overload protection

Programmable Undervoltage Line Lockout (UVLO)

Programmable soft start

Thermal shutdown protection

Low shutdown quiescent current: 9μA

Programmable slope compensation

Programmable frequency hopping cycle mode to reduce standby power

Allows external VCC supply

Inductor DCR current sense function

Multi-phase functionality thermally enhanced 20-pin HTSSOP

Applications 

12V, 24V and 48V power systems 

Automotive start/stop

Audio power supplies

High-current boost power supplies

Simplified application schematic

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