SLVSGU9 October 2024 TPS62810-EP , TPS62811-EP , TPS62812-EP , TPS62813-EP
PRODUCTION DATA
The TPS6281x-EP device is protected against overload and short-circuit events. If the inductor current exceeds the current limit ILIMH, the high-side switch is turned off and the low-side switch is turned on to ramp down the inductor current. The high-side switch turns on again only if the current in the low-side switch has decreased below the low-side current limit. Due to internal propagation delay, the actual current can exceed the static current limit. The dynamic current limit is given as:
where
The current limit can exceed static values, especially if the input voltage is high and very small inductances are used. The dynamic high-side switch peak current can be calculated as: