Patent ID: 8564363
Filing Date: 2013-10-22
Classification: H03K

Abstract:
1. A pulse filter, used in a half-bridge or full-bridge driver, said pulse filter comprising: a first Schmitt trigger circuit, having an input coupled to a first set signal, and an output for providing a second set signal by performing a first Schmitt trigger operation on said first set signal; a second Schmitt trigger circuit, having an input coupled to a first reset signal, and an output for providing a second reset signal by performing a second Schmitt trigger operation on said first reset signal; a first PMOS transistor, having a source coupled to a first power line, a gate coupled to said second reset signal, and a drain; a second PMOS transistor, having a source coupled to said first power line, a gate coupled to said second set signal, and a drain; a first NMOS transistor, having a drain coupled to said drain of said first PMOS transistor for providing a reset signal, a gate coupled to said second reset signal, and a source coupled to said second set signal; a second NMOS transistor, having a drain coupled to said drain of said second PMOS transistor for providing a set signal, a gate coupled to said second set signal, and a source coupled to said second reset signal; a third NMOS transistor, having a drain coupled to said second set signal, a gate coupled to said second reset signal, and a source coupled to a second power line; and a fourth NMOS transistor, having a drain coupled to said second reset signal, a gate coupled to said second set signal, and a source coupled to said second power line.