Monolithic Power Systems (MPS) MPQ4423C Synchronous Buck Converters
Monolithic Power Systems (MPS) MPQ4423C Synchronous Buck Converters are high-frequency, rectified, step-down, and switch-mode converters with integrated internal power MOSFETs. These converters feature a 4V to 36V operating input voltage range, 6A peak output current, 2.2MHz switching frequency, and 0.8V adjustable output. The MPQ4423C buck converters provide a synchronous mode that offers high efficiency across the IOUT load range and peak current control mode for fast transient response. These protection features include Over-Current Protection (OCP) with hiccup mode, output Over-Voltage Protection (OVP), and thermal shutdown. Typical applications include automotive infotainment systems, wireless chargers, and USB Power Delivery (PD).
Features
- Wide 4V to 36V operating Input Voltage (VIN) range
- 50mΩ/30mΩ Low RDS(ON) internal power MOSFETs
- Up to 6A peak Output Current (IOUT)
- Up to 2.2MHz Switching Frequency (fSW)
- 420kHz/2.2MHz selectable fSW with Frequency Spread Spectrum (FSS)
- OUT to VCC switch over LDO for high efficiency
- 200kHz to 2.2MHz external SYNC clock
- Adjustable forced Pulse-Width Modulation (PWM) mode or auto-PWM/PFM mode
- Passive output discharge
- 0.8V adjustable output voltage
- Output Over-Voltage Protection (OVP), Over-Current Protection (OCP) with hiccup mode, and thermal shutdown
- Available in a QFN-16 (3mmx4mm) package
- Available in a wettable flank package
- Available in AEC-Q100 grade 1
Applications
- Automotive infotainment systems
- Wireless chargers
- USB Power Delivery (PD)
Typical Application Diagram
Efficiency vs. Load Current vs. Power Loss
Block Diagram
Associated Evaluation Board
Monolithic Power Systems (MPS) EVQ4423C-L-00A Evaluation Board
Designed for the MPQ4423C, a high-frequency, synchronous, step-down switch-mode converter.
Published: 2024-10-15
| Updated: 2024-11-08