MPQ8643 Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MPQ8643 Synchronous Step-Down Converters are able to achieve up to 20A of output current across a wide input voltage range. These step-down converters feature adjustable current limits and voltage tracking, and operate at high frequencies across a wide I_OUT load range. The MPQ8643 converters also feature internally compensated Constant-On-Time (COT) control, which provides a fast transient response and facilitates loop stabilisation. By configuring the MODE pin, the selectable switching frequency (F_SW) can be set to 600kHz, 800kHz, or 1000kHz. This maintains a constant f_SW, regardless of V_IN and the output voltage (V_OUT). These converters offer excellent load regulation, selectable Pulse-Skip Mode (PSM) or Forced Continuous Conduction Mode (FCCM), output voltage tracking and discharge, and differential output remote sense.