TPIC6595

POWER LOGIC 8-BIT SHIFT REGISTER

SLIS010A – APRIL 1992 – REVISED OCTOBER 1995

6

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

0.25 A

IF

0

IRM

25% of IRM

ta

trr

di/dt = 20 A/

µs

+

–

2500

µF

250 V

L = 1 mH

IF

(see Note B)

RG

VGG

(see Note A)

Driver

TP A

50

Ω

Circuit

Under

Test

DRAIN

25 V

t1

t3

t2

TP K

TEST CIRCUIT

CURRENT WAVEFORM

NOTES: A. The VGG amplitude and RG are adjusted for di/dt = 20 A/µs. A VGG double-pulse train is used to set IF = 0.25 A,

where t1 = 10 µs, t2 = 7 µs, and t3 = 3 µs.

B. The DRAIN terminal under test is connected to the TP K test point. All other terminals are connected together and connected to the

TP A test point.

Figure 3. Reverse-Recovery-Current Test Circuit and Waveforms of Source-Drain Diode

15 V

0.11

Ω

100 mH

SINGLE-PULSE AVALANCHE ENERGY TEST CIRCUIT

tw

tav

IAS = 1 A

V(BR)DSX = 45 V

VOLTAGE AND CURRENT WAVEFORMS

Input

ID

VDS

See Note B

VCC

DRAIN

LGND

SRCLR

SER IN

G

SRCK

RCK

Word

Generator

(see Note A)

DUT

PGND

5 V

VDS

ID

2

8

13

3

12

9

19

1, 10, 11, 20

4 –7,

14 –17

5 V

0 V

MIN

NOTES: A. The word generator has the following characteristics: tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω.

B. Input pulse duration, tw, is increased until peak current IAS = 1 A.

Energy test level is defined as EAS = IAS × V(BR)DSX × tav/2 = 75 mJ, where tav = avalanche time.

Figure 4. Single-Pulse Avalanche Energy Test Circuit and Waveforms