Patent ID: 7746004
Filing Date: 2010-06-29
Classification: H05B

Abstract:
1. A discharge-lamp lighting apparatus comprising: a first series circuit connected to each end of a DC power source and including a high-side first p-type FET and a low-side first n-type FET that are connected in series; a second series circuit connected to each end of the DC power source and including a high-side second p-type FET and a low-side second n-type FET that are connected in series; a transformer having a primary winding and a secondary winding, a series circuit of the primary winding and a capacitor being connected between a connection point of the first p- and n-type FETs and a connection point of the second p- and n-type FETs, and the secondary winding being connected to a discharge lamp; a control circuit configured to alternately turn on/off the first p-type FET and second n-type FET and the first n-type FET and second p-type FET by providing the FETs with control signals according to a lamp current passed through the discharge lamp; and a first drive circuit configured to drive the first p-type FET and a second drive circuit configured to drive the second p-type FET, each of the first and second drive circuits including: