US 12,278,487 B2
ESD protection circuit, driving circuit, pre-driving circuit and IC layout thereof
Han-Hsin Wu, HsinChu (TW); Tay-Her Tsaur, HsinChu (TW); and Yen-Wei Liu, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Jul. 25, 2022, as Appl. No. 17/873,101.
Claims priority of application No. 110127529 (TW), filed on Jul. 27, 2021.
Prior Publication US 2023/0034030 A1, Feb. 2, 2023
Int. Cl. H02H 9/04 (2006.01)
CPC H02H 9/046 (2013.01) 7 Claims
OG exemplary drawing
 
1. A pre-driving circuit, comprising:
a voltage level transforming circuit, configured to transform a first input voltage to a first transformed voltage, or to transform a second input voltage to a second transformed voltage, wherein the first input voltage is higher than the second input voltage, and the second transformed voltage is less than the first transformed voltage; and
a driving power enhancement circuit, comprising at least one inverter, wherein the inverter operates at the first input voltage and the second transformed voltage, or operates at the first transformed voltage and the second input voltage.