5V-to-55V, Three Phase Brushless DC Motor Pre-Driver With Buck Regulator

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The MP6535 is a gate driver IC designed for three-phase brushless DC motor driver applications. It is capable of driving three half bridges consisting of six N-channel power MOSFETs up to 55V.

It includes a 500mA buck regulator to generate local power for a microcontroller or other circuitry.

The MP6535 integrates a regulated charge pump to generate gate drive power, and uses a bootstrap capacitor to generate a supply voltage for the high-side MOSFET driver. An internal trickle-charge circuit maintains sufficient high-side gate driver voltage even when an output is operated at 100% duty cycle.

Internal protection features include programmable short-circuit protection, over-current protection, adjustable dead-time control, under-voltage lockout, and thermal shutdown.

The device integrates 120° commutation using three Hall sensor inputs. The PWM, DIR, and nBRAKE inputs are used to control motor speed, direction, and braking.

The MP6535 is available in a 40-contact 5mmx5mm QFN with an exposed thermal pad.

Symmetry Electronics is an authorized Monolithic Power Systems distributor.


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Wide 5V to 55V Input Voltage Range
Built-in Hall Sensor Inputs and 120 Commutation Logic
Charge Pump Gate Drive Supply
Bootstrap High-Side Driver with Trickle-Charge Circuit Supports 100% Duty Cycle Operation
500mA buck regulator
Low Power Sleep Mode
Programmable Short-Circuit Protection
Over-Current Protection
Adjustable Dead-Time Control to Prevent Shoot-Through
Thermal Shutdown and UVLO Protection
Fault Indication Output
Thermally Enhanced Surface-Mount Package


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Monolithic Power Systems Datasheet

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