AS4426 / AS4427 / AS4428

LLC

FIGURE 1. SWITCHING TIME TEST CIRCUIT

90%

10%

90%

10%

90%

10%

INPUT

OUTPUT

≈0.4V

+5V

0V

t

F

INVERTING DRIVER

0.1

µF

t

R

OUTPUT

C

5,7

3

6

INPUT

V

4.7

µF

2,4

90%

10%

INPUT

≈0.4V

+5V

OUTPUT

0V

NONINVERTING DRIVER

10%

10%

t

F

90%

t

R

t

D1

1B-40

t

D2

90%

CROSSOVER ENERGY LOSS

418

1B-41

16

14

12

10

8

6

–9

10

–8

10

8

7

2

3

4

5

6

9

NOTE: The values on this graph represent the loss seen by both

drivers in a package during one complete cycle. For a single

driver, divide the stated values by 2. For a single transition of a

single driver, divide the stated value by 4.

CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX

DS064 REV A