Fan motor drive circuit

Example of fan motor drive circuit using a photocoupler for motor current feedback

Fan motor drive circuit

Lineup

Transistor output photocoupler

Part number

TLP183

TLP185(SE

Package

4pin SO6

4pin SO6

BVS [Vrms]

3750

3750

Topr [°C]

-55 to 125

-55 to 110

U-MOS Series MOSFET

Part number

SSM3K56MFV

SSM6N56FE

Package

VESM

ES6

VDSS [V]

20

20

ID [A]

0.8

0.8

RDS(ON) [Ω] @VGS = 4.5 V

Typ.

0.186

0.186

Max

0.235

0.235

Polarity N-ch N-ch x 2

Main control MCU

Part number

TMP89FW24ADFG

TMP89FW24AFG TMP89FW20AUG

Max operating frequency [Note]

16 MHz @VDD = 2.7 to 5.5 V / 8 MHz @VDD = 1.8 to 2.7 V

ROM (Flash memory)

Code area: 64 KB / Data area: 60 KB

RAM

3 KB + Shadow RAM 3 KB

IO port

68 52

Timer / Counter

16bit x 2ch, 10bit x 1ch, 8bit x 4ch

Serial port UART: 3ch, SIO: 1ch, I2C/SIO: 1ch 
AD converter 8ch (10bit)
LCD driver 40 seg. x 4 com. 32 seg. x 4 com.
Package QFP80-P-1420-0.80M LQFP80-P-1212-0.50F LQFP64-P-1010-0.50E

[Note ] Flash memory is read only when VDD = 1.8 to 2.7 V.

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