An approach of phase-locking control for piezoelectric backlight inverter for cold cathode fluorescent lamp (CCFL) is presented. According to the characteristic of piezoelectric transformer (PZT) and CCFL a frequency-...An approach of phase-locking control for piezoelectric backlight inverter for cold cathode fluorescent lamp (CCFL) is presented. According to the characteristic of piezoelectric transformer (PZT) and CCFL a frequency-sweep control is applied for ignition. Then a phase locking loop is used to control the driving frequency to maintain the optimum operating point of the inverter system.展开更多
文摘An approach of phase-locking control for piezoelectric backlight inverter for cold cathode fluorescent lamp (CCFL) is presented. According to the characteristic of piezoelectric transformer (PZT) and CCFL a frequency-sweep control is applied for ignition. Then a phase locking loop is used to control the driving frequency to maintain the optimum operating point of the inverter system.
