MP6612D

45V, 5A, H-Bridge DC Motor Driver with Current Sense and ENBL/DIR Logic Inputs

Description

The MP6612D is an H-bridge motor driver that drives reversible motors. It can drive one DC motor, one stepper motor winding, and other loads. The H-bridge consists of four N-channel power MOSFETs and an internal charge pump that generates the gate driver voltages. The outputs are controlled via the DIR and ENBL pins.

The device operates from a 4V to 45V motor power supply voltage, which can supply up to 5A of output current (I_OUT) according to the logic control. A low standby circuit current is achieved while the device is disabled. An internal current-sense circuit provides an output voltage (V_OUT) that is proportional to the load current. Cycle-by-cycle current regulation/limiting is also provided. These features do not require the use of a low-ohmic shunt resistor.

Internal shutdown functions include over-current protection (OCP), over-voltage protection (OVP), under-voltage lockout (UVLO), and over-temperature protection (OTP). The MP6612D requires a minimal number of readily available, standard external components. It is available in a TSSOP-20 package with an exposed thermal pad.

Features & Benefits

Wide 4V to 45V Operating Input Voltage (V_IN) Range
Internal Full H-Bridge Driver Supports 100% Duty Cycle with Internal Charge Pump
Current Sense with 10% Accuracy
5A Continuous Output Current (I_OUT)
Low On Resistance:
- 70mΩ High-Side MOSFET (HS-FET)
- 45mΩ Low-Side MOSFET (LS-FET)
Cycle-by-Cycle Current Regulation/Limiting
ENBL and DIR Logic Inputs
Low Quiescent Current (I_Q) in Brake Mode while Two LS-FETs are On
Configurable Current Limit
Over-Current Protection (OCP)
Over-Voltage Protection (OVP)
Over-Temperature Protection (OTP)
Fault Indication for OCP, OVP, and OTP
Available in a TSSOP-20 EP Package with an Exposed Thermal Pad