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µPD168111A
Stepping Motor Driver
Monolithic Dual H Bridge Driver for DSC
Overview
The µPD168111A is monolithic dual H-bridge driver LSI which uses power MOSFETs in the output stages. By using the MOS process, this driver LSI has substantially improved the voltage loss of the output stage and power consumption as compared with conventional driver circuits using bipolar transistors.
By eliminating the charge pump circuit, the current during power-OFF is drastically decreased.
In addition, a low-voltage malfunction prevention circuit is also provided that prevents this LSI from malfunctioning when the supply voltage drops.
This LSI can drive stepping motor, and change 2-phase excitation driving or micro-step driving, therefore this driver is suitable for driving DSC motor.
Features
- Two H bridge circuits employing power MOSFETs
- Possible to change current-controlled 64-step micro-step driving or 2-phase excitation driving
- Possible to control this motor by serial data
Input data is LSB first
Possible to set PWM frequency, PWM number, output current - Input logic frequency: 6 MHz MAX.
- 3-V power supply
Minimum operating supply voltage: 2.7 V - Low voltage malfunction prevention circuit
Operated voltage is 1.7 V TYP. - VM current shutdown circuit
- 24-pin plastic TSSOP (5.72 mm (225))
Ordering Information
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Document
Block Diagram
