Application and evaluation of HOMSEMI MOSFET in high performance no leaf fan

This scheme selects the high performance ST series MCU, adopts stepless speed regulation fan, with infrared remote control, the operation is simple, fast and convenient. MCU send the command to the special PWM pulse, and into the semiconductor (HOMSEMI) HS2N60IB power MOSFET drive brushless DC motor, the maximum speed can reach 10000r/min. and HS2N60IB semiconductor (HOMSEMI) power MOSFET low Qgs and Rds (ON), brushless DC motor with light weight and high efficiency. To make our products more energy saving and environmental protection, enhance the reliability of the system and greatly reduce production cost.

No leaf fan also called air increases times machine. At the end of 2009 for the first time launched. This invention inspiration from air blade hand dryer, its principle is to force the air through a small brush to dry hands of water. No leaf fan is let the air blowing out from a 1.3MM wide ring incision, due to the air was forced to blow out from this a circle, so the amount of air through can be increased to 15 times per hour to 35 kilometers.

The brushless DC motor program (BLDCM) input (110V/220V) AC converter (converter) into DC, turn to the motor coil before the DC voltage from the inverter (inverter) turn into the 3 phase voltage to drive motor. The converter (inverter) consists of 6 power MOSFET (VT1 ~ VT6) into the upper arm (VT1, VT3, VT5) / lower arm (VT2, VT4, VT6) to connect the motor to control the flow through the motor coil switch. MCU provides PWM (pulse width modulation) determines the power MOSFET HS2N60IB switching frequency and converter (inverter) commutation timing.

Controller schematic diagram:

1 VT1-VT6 is a semiconductor HS2N60IB. (HOMSEMI) power MOSFET

2 PMSM represents a brushless DC motor or a permanent magnet synchronous motor.

3 drive controller is a microcontroller can be 8 or a 32 bit microcontroller.

4 power supply compatible with 115VAC or 230VAC. on the control board jumper selection.

Two. Schematic diagram

Three.MOSFET output waveform

This series of bladeless fan, brushless DC motor with small volume and high efficiency, the main control chip using STM8 series MCU, and with a start semiconductor (HOMSEMI) semiconductor, special power MOSFET HS2N60IB, launched more smoothly, lower noise, so as to optimize performance.

Background information:

Guangzhou Kai Semiconductor Co. Ltd. (HOMSEMI) is the development and production of power semiconductor (MOSFET, IGBT) of a high-tech enterprises, the operating characteristics of products are integrated with the application program, matching and Optimization for the specific application.

ST M8 series MCU:

ST STMicroelectronics 8 bit microcontroller

The highest frequency of fcpu: 24MHz, memory access when fcpu is less than or equal to 0 16MHz for the.

Price is relatively high.

HS2N60IB:

HOMSEMI PLANNAR MOSFET

VDS:600V

ID:2A

DCBL motor driver application optimization.