Rev. D 10/20

29

TOP232-234

www.power.com

Figure 32. CONTROL Pin I-V Characteristic.

Figure 31. Duty Cycle Measurement.

Figure 33. Drain Current Operating Envelope.

Figure 34. TOPSwitch-FX General Test Circuit.

PI-2538-062615

5-50 V

S4

0-60 k

Ω

40 V

0-15 V

0.1

µF

47

µF

470

Ω

5 W

470

Ω

100 k

Ω

NOTES: 1. This test circuit is not applicable for current limit or output characteristic measurements.

2. For P and G packages, short all SOURCE pins together.

D

S

F

M

C

CONTROL

TOPSwitch-FX

S2

S3

S1

0.8

1.3

1.2

1.1

0.9

0.8

1.0

0

0

1

2

6

8

3

Time (µs)

4

5

7

0.7

0.6

0.5

0.4

0.3

0.2

0.1

ILIMIT(MAX) @ 25 ˚C

ILIMIT(MIN) @ 25 ˚C

IINIT(MIN) @ 85 VAC

IINIT(MIN) @ 265 VAC

tLEB (Blanking Time)

PI-2039-033001

DRAIN

VOLTAGE

HV

0 V

90%

10%

90%

t2

t1

D =

t1

t2

120

100

80

40

20

60

0

0

2

4

6

8

10

CONTROL Pin Voltage (V)

1

Slope

Dynamic

Impedance

=