TPIC2406

INTELLIGENT POWER QUAD MOSFET LATCH

SLIS012 − D3378, FEBRUARY 1990

POST OFFICE BOX 655303

POST OFFICE BOX 1443

2−11

THERMAL INFORMATION

1.5

1

0.5

0

025

50

2

2.5

3

75

100

125

150

FREE-AIR TEMPERATURE

DISSIPATION DERATING CURVE

TA − Free-Air Temperature − °C

Derating Factor = 20 mW/

°C

RθJA = 50°C/W

Figure 12

0.1

0.001

0.01

0.1

1

10

100

Figure 13

1

t − On Time − s

TRANSIENT THERMAL IMPEDANCE

vs

ON TIME

10

100

1000

Single Pulse

d = 2 %

d = 5 %

d = 10 %

d = 20 %

d = 50 %

tw

tc

ID

0

The single-pulse curve in Figure 11 represents measured data.

The curves for various pulse durations are based on the

following equation:

1

*

w ) t c)

c)

w

)

c

)

= the single-pulse thermal impedance

for t = tw seconds

= the single-pulse thermal impedance

for t = tc seconds

for t = tw + tc seconds

Where: