Circuit Design of Motor Drive Power Supply with 35W Dual Speed ​​Control Input

Probe domestic double-head probe 038-BB-5.7L The shape of the two ends of the needle is outside the pointed needle

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Summary:

The flyback converter uses a device in the PeakSwitch family (U1, PKS606Y) to drive a 35 W motor while outputting 75 W peak power during startup and load transitions. There are two ways to change the speed of the motor: 1) using potentiometer R20 (connected to J3), or 2) using an external 3.6 V to 10 V DC voltage source (connected to J4). Motor speed control is achieved by changing the output voltage of the power supply.

design feature

• Replace a two-stage linear power supply and circuit breaker design with a simple single-stage circuit design
• Eliminate the circuit breaker circuit commonly used as DC motor shift control
• Motor speed is controlled by a small potentiometer or a variable DC voltage of 3.6 V to 10 V
• Use fewer components: only 47 components
• Efficiency: ≥77% (at 36 W load)
• Meet EN55022B conductive EMI restrictions
• The ON/OFF control mode remains stable over the entire motor speed (output voltage)

Circuit diagram of 35W dual speed control input motor drive power supply

See the uploading documentation for details (click to download)