TPIC5401

H-BRIDGE GATE-PROTECTED

POWER DMOS ARRAY

SLIS024A – DECEMBER 1993 – REVISED MARCH 1994

10

POST OFFICE BOX 655303

THERMAL INFORMATION

tw – Pulse Duration – s

0.1

10

1

0.0001

0.001

0.01

0.001

0.0001

0.01

0.1

110

tw

tc

ID

0

DC Conditions

d = 0.5

d = 0.2

d = 0.1

d = 0.02

Single Pulse

d = 0.05

NORMALIZED JUNCTION-TO-AMBIENT THERMAL RESISTANCE

vs

PULSE DURATION

† Device mounted on FR4 printed-circuit board with no heatsink.

d = 0.01

NOTE A: Z

θJA(t) = r(t) RθJA

tw = pulse duration

tc = cycle time

d = duty cycle = tw/tc

Figure 17