Semiconductor Components Industries, LLC, 2017

www.fairchildsemi.com

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6

Figure 4. Recommended MCU Interface and Bootstrap Circuit with Parameters

Notes:

9. Parameters for bootstrap circuit elements are dependent on PWM algorithm. For 15 kHz of switching frequency, typical example of parameters is shown above.

Figure 5. Case Temperature Measurement

Notes:

12. Attach the thermocouple on top of the heat-sink of SPM 5 package (between SPM 5 package and heatsink if applied) to get the correct temperature measurement.

HIN

LIN

Output

Note

0

0

Z

Both FRFET Off

0

1

0

Low side FRFET On

10

High side FRFET On

1

1

Forbidden

Shoot through

Open Open

Z

Same as (0,0)

COM

VDD

LIN

HIN

VB

HO

VS

LO

P

N

R

3

Inverter

Output

C

3

C

1

+15 V

10

μF

These values depend on PWM control algorithm

* Example of Bootstrap Paramters

:

C

R

5

C

5

V

DC

C

2

* Example Circuit : V phase

C

4

V

One Leg Diagram of Motion SPM

20

40

60

80

100

120

140

160

0.5

1.0

1.5

2.0

2.5

3.0

3.5