IRAMY20UP60B

www.irf.com

13

Figure 10. Recommended Bootstrap Capacitor Value vs. Switching Frequency

0

5

10

15

20

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15.0

16.0

6.8µF

R

BS

D

BS

C

BS

R

G1

R

G2

V

S

H

O

L

O

COM

v

B

V

CC

H

IN

L

IN

+15V

V

SS

H

IN

L

IN

U,V,W

GND

V

SS

3.3µF

4.7µF

10µF

PWM Frequency - kHz

15µF

Figure 9. Thermistor Readout vs. Temperature (12kohm pull-up resistor, 5V) and

Nominal Thermistor Resistance values vs. Temperature Table.

-40

-40 -30 -20

-20 -10

0010

20

20

30

40

40

50

60

60

70

80

80

90 100

100 110 120

120 130

0.5

1.0

1.0

1.5

2.0

2.0

2.5

3.0

3.0

3.5

4.0

4.0

4.5

5.0

5.0

+5V

Thermistor Temperature - °C

Min

Avg.

Max

°C

Ω

°C

Ω

°C

Ω

-40

4397119

25

100000

90

7481

-35

3088599

30

79222

95

6337

-30

2197225

35

63167

100

5384

-25

1581881

40

50677

105

4594

-20

1151037

45

40904

110

3934

-15

846579

50

33195

115

3380

-10

628988

55

27091

120

2916

-5

471632

60

22224

125

2522

0

357012

65

18322

130

2190

5

272500

70

15184

135

1907

10

209710

75

12635

140

1665

15

162651

80

10566

145

1459

20

127080

85

8873

150

1282