Patent ID: 8233252
Filing Date: 2012-07-31
Classification: H01L,H02H,H03K

Abstract:
1. A circuit comprising: a first field-effect transistor having a first drain terminal, a first source terminal, and a first control terminal; a second field-effect transistor having a second drain terminal, a second source terminal, and a second control terminal, the second field-effect transistor being complementary to the first field-effect transistor, the first drain terminal being coupled directly to the second source terminal and, through a first resistance, to the second control terminal, the second drain terminal being coupled to the first control terminal and, through a second resistance, to the first source terminal; and a Zener diode having a cathode coupled to the second control terminal; a gate-source capacitance of the second field-effect transistor corresponding to a depletion-layer capacitance of the Zener diode.