GETINFOBRIEF datasheet(20/36 Pages) FREESCALE

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MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2

Freescale Semiconductor

Operation

Figure 12. MC3PHAC Application Example in Standalone Mode

Notes:

1. See Figure 11.

2. See Figure 9.

3. See Figure 10.

4. See Table 4.

5. If no external fault circuit is provided, connect to VSS.

6. Use bypass capacitors placed close to the MC3PHAC.

7. Consult crystal/resonator manufacturer for component values.

22 pF

FROM DIVIDED DC BUS

+5 V

6.8 k

Ω

50 Hz – PWM POLARITY

50 Hz + PWM POLARITY

60 Hz – PWM POLARITY

60 Hz + PWM POLARITY

+5 V

10 k

Ω

RESET

0.1

µF

NOTE 6

+5 A

MC3PHAC

+5 A

5 k

Ω

4.7 k

Ω

+5 A

5 k

Ω

+5 V

10 k

Ω

10 k

Ω

+ 5

NOTE 6

NOTE 1

NOTE 2

NOTE 3

NOTE 4

FROM SYSTEM FAULT

DETECTION CIRCUIT

TO RESISTIVE BRAKE DRIVER

VREF

RESET

VDDA

VSSA

OSC2

OSC1

PLLCAP

PWMPOL_BASEFREQ

PWM_U_TOP

PWM_U_BOT

PWM_V_TOP

PWM_V_BOT

PWM_W_TOP

PWM_W_BOT

DC_BUS

ACCEL

SPEED

MUX_IN

START

FWD

VSS

VDD

VBOOST_MODE

DT_FAULTOUT

RBRAKE

RETRY/TxD

PWMFREQ/RxD

FAULTIN

NOTE 5

4.7 k

Ω

0.1

µF

RPWMFREQ

RRETRY

RDEADTIME

RBOOST

NOTE 7

10 M

Ω

12 k

Ω

5.1 k

Ω

8.2 k

Ω

3.9 k

Ω

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