Monolithic Power Systems (MPS) MP6543 2A 3-Phase Brushless DC Motor Drives

Monolithic Power Systems (MPS) MP6543 Brushless DC Motor Drivers are 12V, 2A 3-phase power stages. The MP6543H Motor Drivers each integrate three half-bridges consisting of six N-channel power MOSFETs, as well as pre-drivers, gate drive power supplies, and current-sense amplifiers. These devices are available in three variants. The MP6543 has Enable (EN) and PWM inputs for each half-bridge. The MP6543A has separate High-Side (HS) and Low-Side (LS) inputs. The MP6543B has Hall-effect sensor inputs.

The MP6543 Motor Drivers deliver up to 2A of continuous current (depending on thermal and PCB conditions) with an adjustable over-current protection (OCP) threshold. These devices use an internal charge pump to generate the gate drive supply voltage for the high-side MOSFETs and a trickle charge circuit to maintain a sufficient gate drive voltage to operate at a 100% duty cycle.

Internal safety features include thermal shutdown, under-voltage lockout (UVLO), and over-current protection (OCP).

The Monolithic Power Systems (MPS) MP6543 Brushless DC Motor Drivers are available in a QFN-24 package with an exposed pad for enhanced thermal performance.

Features

3V to 22V operating supply voltage
Three integrated half-bridge drivers
2A continuous output current
MOSFET on resistance: 110mΩ per FET
Available in three variants
- MP6543: EN and PWM inputs
- MP6543A: LS and HS inputs
- MP6543B: Hall-effect sensor inputs
Built-In 3V, 100mA LDO regulator