BUL44 BUL44F

6

Motorola Bipolar Power Transistor Device Data

–5

–4

–3

–2

–1

0

1

2

3

4

5

0

1

2

3

4

5

6

7

8

TIME

VCE

IB

1

µs

3

µs

90% IB

dyn 1

µs

dyn 3

µs

10

9

8

7

6

5

4

3

2

1

0

0

1

2

3

4

5

6

7

8

TIME

IB

IC

tsi

VCLAMP

10% VCLAMP

90% IB1

10% IC

tc

90% IC

tfi

+15 V

1

µF

150

Ω

3 W

100

Ω

3 W

MPF930

+10 V

50

Ω

COMMON

–Voff

500

µF

MPF930

MTP8P10

MUR105

MJE210

MTP12N10

MTP8P10

150

Ω

3 W

100

µF

Iout

A

1

µF

IC PEAK

VCE PEAK

VCE

IB

IB1

IB2

V(BR)CEO(sus)

L = 10 mH

RB2 =

∞

VCC = 20 VOLTS

IC(pk) = 100 mA

INDUCTIVE SWITCHING

L = 200

µH

RB2 = 0

VCC = 15 VOLTS

RB1 SELECTED FOR

DESIRED IB1

RBSOA

L = 500

µH

RB2 = 0

VCC = 15 VOLTS

RB1 SELECTED

FOR DESIRED IB1

RB2

RB1

Figure 18. Dynamic Saturation Voltage Measurements

Figure 19. Inductive Switching Measurements

Table 1. Inductive Load Switching Drive Circuit