Monolithic Power Systems (MPS) MPQ4228 Buck Converter with USB Charging Port

Monolithic Power Systems (MPS) MPQ4228 Buck Converter With Charging Port integrates a monolithic, step-down switch-mode converter with a single USB current-limit switch. The device also has a USB Type-C™ 5V @ 3A mode configuration channel for USB ports. It achieves 3A output current across a wide input supply range, with excellent load and line regulation.

The USB switch’s output is current-limited. The USB port supports Apple 3A Divider mode, DCP schemes for BC1.2, and 1.2V/1.2V mode. The USB port also supports USB Type-C 5V @ 3A DFP Mode and Type-A mode (CC1 = 97.6kΩ). Fault condition protections include hiccup current limiting, output over-voltage protection (OVP), DP/DM/CC1/CC2 short-to-battery protection, and thermal shutdown (TSD). The NTC input monitors the temperature of the external PCB and other components.

The MPQ4228 requires a few readily available, standard external components. The Monolithic Power Systems (MPS) MPQ4228 comes in a package of QFN-22 (4mm x 4mm).

Features

Supports charging only Type-C or Type-A port
NTC over-temperature detection
Passes Apple MFI R33 certification test
USB-IF Type-C certificated
145°C internal load shedding entry temperature
Independent USB On/Off control pin (EN1)
Supports BC1.2 DCP mode, Apple 3A divider mode and 1.2V/1.2V mode
USB_OUT, DP/DM, CC1/CC2 pins short to battery protection
Wide 4.2V to 36V continuous operating input voltage range
Selectable switching frequency (420kHz and 2.2MHz with spread spectrum)
3A output current
Selectable forced CCM operation/automatic PFM/PWM operation

Integrated 20mΩ low R_DS(ON) USB switch
Line drop compensation
EN shutdown discharge function
Fault indication for OCP, OVP, and OTP
Frequency sync from 200kHz to 2.2MHz
Hiccup current limit for both buck and USB
±8kV IEC 61000-4-2 contact discharge ESD rating for CC1 and CC2 pins
±8kV IEC 61000-4-2 contact discharge ESD rating with a small resistor, capacitor on DP and DM pins
±15kV IEC 61000-4-2 air discharge ESD rating for DP, DM, CC1, and CC2 pins
Available in a QFN-22 (4mm x 4mm) package with wettable flanks
Available in AEC-Q100 Grade 1

Applications

USB Dedicated Charging Ports (DCP)
USB Type-C DFP port

Monolithic Power Systems (MPS) MPQ4228 Buck Converter with USB Charging Port

Features

Applications

Typical Application

Videos

husseinkey ELECTRONICS®

COMPANY