This compact breakout board for ROHM’s BD65496MUV motor driver offers an operating voltage range of 2V to 16V and can deliver a continuous 1.2A (5A peak for a few milliseconds) to a single brushed DC motor. The motor driver features variable switching speed, allowing for PWM frequencies up to 500kHz, two drive mode options, and built-in under-voltage and over-temperature protection; this carrier also adds reverse-voltage protection.
The BD65496MUV from ROHM is a tiny H-bridge motor driver IC that can be used for bidirectional control of one brushed DC motor at 2V to 16V. It can supply up to about 1.2A continuously and can tolerate peak currents up to 5A for a few milliseconds. The BD65496MUV is a great IC, but its small surface-mount package makes it difficult for the typical student or hobbyist to use; the breakout board makes it easy to use with standard solderless breadboards and 2.54mm perfboards. The board ships populated with SMD components, including the BD65496MUV and a reverse battery protection circuit.
- Single-channel H-bridge motor driver with shoot-through protection and internal free-wheeling diodes (can drive one DC motor).
- Under-voltage lockout on the logic supply and protection against over-temperature.
- Carrier board adds reverse-voltage protection on the motor supply.
- Compact size.
- Can be used to control the N20 50:1, N20 298:1 and Plastic gearmotors.
- 1 x BD65496MUV Single Brushed DC Motor Driver Carrier.
- PCB Length: 15.2mm.
- PCB Width: 15.2mm.
- PCB Height: 3mm.
- The BD65496MUV datasheet rates this driver for a maximum continuous current of 1.2A. In our tests, we found that the chip was able to deliver 1.2A comfortably over the full operating voltage range, with the driver temperature only approaching the thermal shut down point at the very low end of the motor supply range. At 9V in, we did not see the driver’s thermal shutdown activate until we pushed the continuous current past 1.5A for many minutes, but we generally advise against running so close to the limit that the driver overheats. The tests were conducted at 100% duty cycle with no forced air flow; PWMing the motor will introduce additional heating proportional to the frequency.
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