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 RDS(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
Associated Products
Monolithic Power Systems (MPS) MPQ4228-Q Step-Down Converter with Charging Port
A single USB current-limit switch and Type-C™ 5V at 3A mode configuration mode for USB port apps.
Monolithic Power Systems (MPS) MPQ4228-C Step-Down Converter with Charging Port
Integrates a single current-limit switch and a Type-C™ 5V at 3A mode configuration ch for USB ports.
Typical Application
