Pulse Duration (s)

0.001

0.01

0.1

1

10

10

100

1000

D004

D004

22

TMCS1100

SBOS820 – SEPTEMBER 2019

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10.1.2.2 Short-Duration Current Capability

Higher-current events that are shorter duration can be tolerated by the TMCS1100, because the junction

temperature does not reach thermal equilibrium within the pulse duration. Figure 11 shows the short-circuit

duration curve for the device for single current-pulse events, where the leadframe resistance changes after

stress. This level is reached before a leadframe fusing event, but is a fundamental limit to current-handling

capability of the leadframe. For long-duration pulses, the current capability approaches the continuous rms limit

at the given ambient temperature. For repetitive pulsed events, the current levels must satisfy both the short-

duration current capability and the rms continuous current levels for the duration of the subsequent pulse events.

Figure 11. Single-Pulse Leadframe Capability