MP2422B

MP2422B

24V, 25A, Synchronous Step-Down Converter with Configurable System Settings via I²C and OTP

概要

The MP2422B is a fully integrated, high-frequency, synchronous buck converter with an I²C/PMBus control interface. It offers a very compact solution that achieves up to 25A of output current (I_OUT), with excellent load and line regulation across a wide input supply voltage (V_IN) range. The MP2422B operates at high efficiency over a wide I_OUT load range.

The MP2422B adopts an internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization. Its operation frequency can be configured from 300kHz to 1MHz, pulse-width modulation (PWM) frequency (f_PWM), or pulse-frequency modulation (PFM) via the I²C.

An open-drain power good (PG) signal indicates whether the output voltage (V_OUT) is within its nominal range. PG is clamped at about 0.7V with an external pull-up voltage if the input supply fails to power the MP2422B.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MP2422B requires a minimal number of readily available, standard external components, and is available in a TLGA-36 (5mmx5mm) package.

機能と利点

Wide 3.6V to 24V Input Voltage (V_IN) Range
Differential Output Voltage (V_OUT) Remote Sense
25A Continuous Output Current (I_OUT)
Adaptive Constant-On-Time (COT) for Ultra-Fast Transient Response
1% Reference Voltage Accuracy
I²C-Configurable Reference Voltage (V_REF) from 0.3V to 1.536V (in 1.5mV Steps) with Slew Rate Control
Selectable Pulse-Frequency Modulation (PFM)/Forced Pulse-Width Modulation (PWM) Mode, Adjustable Frequency, and Current Limit via the I²C Interface
7 Different Selectable I²C Addresses
Open-Drain Power Good (PG)/PMBus Alert Selectable via the I²C
PG Active Clamped at Low Level during Power Failure
Configurable Soft Start (SS)
Pre-Biased Start-Up
Over-Current Protection (OCP), Under-Voltage Protection (UVP), Under-Voltage Lockout (UVLO), Thermal Shutdown, and Over-Voltage Protection (OVP)
Available in a TLGA-36 (5mmx5mm) Package
Optimized Performance with MPS Inductor MPL-AY Series