TPIC5302

3-CHANNEL INDEPENDENT POWER DMOS ARRAY

SLIS029B – APRIL 1994 – REVISED SEPTEMBER 1995

POST OFFICE BOX 655303

9

THERMAL INFORMATION

NORMALIZED JUNCTION - TO -AMBIENT THERMAL RESISTANCE

vs

PULSE DURATION

0.1

10

0.01

0.001

0.0001

tw – Pulse Duration – s

0.0001

0.001

0.01

0.1

1

10

† Device mounted on FR4 printed-circuit board with no heat sink

NOTE A: Z

θA(t) = r(t) RθJA

tw = pulse duration

tc = cycle time

d = duty cycle = tw/tc

1

DC Conditions

d = 0.5

d = 0.2

d = 0.1

d = 0.02

d = 0.05

d = 0.01

tw

tc

ID

0

Single Pulse

Figure 17