MPQ8636-4 0.611-13V, 20A, 200kHz Step-Down Converter

MPQ8636-4 0.611-13V, 20A, 200kHz Step-Down Converter

Key Specifications

Features

• Wide 4.5V-to-18V Operating Input Range
• 4A/10A/20A Output Current
• Optimal Low RDS(ON) Internal Power MOSFETs Per Device
• Proprietary Switching-Loss–Reduction Technique
• Adaptive COT for Ultrafast Transient Response
• 0.5% Reference Voltage Over 0°C to 70°C Junction Temperature Range
• Programmable Soft-Start Time
• Pre-Bias Start-Up
• Programmable Switching Frequency from 200kHz to 1MHz
• Non-Latch OCP, OVP, and Thermal Shutdown

Applications

• Telecom and Networking Systems
• Base Stations
• Personal Video Recorders
• Flat-Panel Televisions and Monitors

Design Notes

• The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
• Keep the input loop short — high di/dt at the switch node sets conducted EMI.
• Power switches are integrated, so the thermal path is the PCB copper under the pad.

Common Questions