Electrostatic discharge protection device and integrated circuit using same

摘要

An electrostatic discharge (ESD) protection device is formed in an integrated circuit (IC) with a DC-DC converter. The DC-DC converter includes a high-side switch and a low-side switch in series. The ESD protection device includes a first ESD protection component coupled to the high-side switch in parallel and a second ESD protection component coupled to the low-side switch in parallel. When an ESD occurs, the first ESD protection component is turned on before the high-side switch functions and the second ESD protection component is turned on before the low-side switch functions.

主权项

1. An electrostatic discharge (ESD) protection device for an integrated circuit (IC) with a DC-DC converter comprising a high-side switch and a low-side switch coupled in series to the high-side switch,
the ESD protection device comprising: a first ESD protection component having a gate electrically coupled to a gate of the high-side switch; and a second ESD protection component having a gate electrically coupled to a gate of the low-side switch; wherein the first ESD protection component is turned on before the high-side switch is able to function and the second ESD protection component is turned on before the low-side switch is able to function; wherein a parasitic capacitor of the first ESD protection component is less than a parasitic capacitor of the high-side switch and a parasitic capacitor of the second ESD protection component is less than a parasitic capacitor of the low-side switch.