MMBD4148 datasheet(9/28 Pages) FAIRCHILD

Part #	MMBD4148

Description	FEBSPM3SPM45-M01MTCA Motion SPM3 45H Evaluation Board

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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9

FEBSPM3SPM45_M01MTCA

• Rev. 1.0.1

3.2. Test Configuration #1

Use this configuration for motor current less than 7 ARMS. This is the default

configuration (see Figure 6).

1. Attach the 3-phase motor and MCU connections.

2. Connect the AC line voltage to J3 to charge the bulk capacitors and operate the

SMPS. The SMPS does not operate until the AC input voltage is greater than 90 VAC.

3. Fault indicator LED (D3) turns on when AC power is initially applied.

4. Press switch SW2 to reset the fault-detect circuit, turning off fault indicator D3.

5. Operate the MCU firmware to rotate the motor. More advanced control algorithms

may require additional connections to the MCU (i.e.: phase current sensing, motor

winding BEMF sensing, and bus voltage sensing).

AC Line Voltage

+

R16

R15

R17

R14

JP2

JP1

C42

R59

R58

R57 R56

R54

R51

R50

R53

R52

R55

C41

C17

R23

C24

C29

R41

R40

C33

C25

R27

R26

C27

C28

R25

R46

R47

R60

R61

R62

R63

D3

D5

D6

D7

C1

C3

C5

ZD4

ZD2

C38

C15

ZD3

MCU

Motor

Figure 6.

Test Configuration #1

SW2

D3

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