Monolithic Power Systems (MPS) MPQ4272 Dual Buck Converters With I2C Interface

Monolithic Power Systems (MPS) MPQ4272 Dual Buck Converters With I²C Interface integrates dual-channel, monolithic step-down converters with an I²C interface. Each channel can deliver up to 3A output current (I_OUT) across a wide input supply range, with excellent load and line regulation.

The MPQ4272 is designed for dual-port USB charger applications. Both channels can work with an external USB power delivery (USB PD) controller. The I²C interface and one-time programmable (OTP) memory provide flexibility for configurable features.

Fault condition protections include current limiting, output over-voltage protection (OVP), and thermal shutdown (TSD). The Monolithic Power Systems (MPS) MPQ4272 requires a minimal number of readily available, standard external components and is available in a QFN-21 (4mm x 5mm) package.

Features

Dual 3A or shared 6A buck converter
Supports USB PD 3.0
Wide 4V to 36V operating input voltage (V_IN) range
1V to 21V output voltage range with 12.6mV resolution, V_OUT scale loop = 0.0635
Selectable 250kHz, 420kHz, 1.1MHz, or 2.1MHz switching frequency
Frequency spread spectrum
Low-dropout mode
Line drop compensation
Accurate adjustable Constant Current (CC) output current limit (50mA/step via the I²C)
22mΩ high-side and 26mΩ low-side low R_DS(ON) internal buck power MOSFETs

I²C interface and Over-Temperature Protection (OTP) with PMBus-compatible parameters
- PFM/PWM mode, current limit, outVOUT, FSS, phase delay, and line drop compensation
V_BUS isolation N-Channel MOSFET gate driver
Battery short-to-ground protection
Load-shedding alert
EN shutdown active discharge
Available in a QFN-21 (4mm x 5mm) package with wettable flanks
Available in AEC-Q100 Grade 1

Applications

USB power delivery
USB-Dedicated Charging Ports (DCP)
Automotive DC/DC supplies

Monolithic Power Systems (MPS) MPQ4272 Dual Buck Converters With I2C Interface

Features

Applications

Typical Application

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