TDA16888

High Performance Power Combi Controller TDA 16888 1 1.1 Overview Features PFC Section – – – – – – – – – IEC 1000-3 compliant Additional operation mode as auxiliary power supply Fast, soft switching totem pole gate drive (1 A) Dual loop control (average current and voltage sensing) Leading edge triggered pulse width modulation Peak current limitation Topologies of PFC preconverter are boost or flyback Continuous/discontinuous mode possible 94% maximum duty cycle P-DIP-20-5 P-DSO-20-1 /-6 /-7 PWM Section – – – – – – – Improved current mode control Fast, soft switching totem pole gate drive (1 A) Soft-start management Trailing edge triggered pulse width modulation Topologies of PWM converter are feed forward or flyback 50% maximum duty cycle to prevent transformer saturation fPWM = fPFC Ordering Code Q67000-A9284-X201-K5 Q67000-A9310-A702 Package P-DIP-20-5 P-DSO-20-1 Type w TDA 16888 w TDA 16888 G w New type Data Sheet 1 2000-02-28 TDA 16888 Special Features – – – – – – – – – – High power factor Typical 50 µA start-up supply current Low quiescent current (15 mA) Undervoltage lockout with internal stand-by operation Internally synchronized fixed operating frequency ranging from 15 kHz to 200 kHz External synchronization possible Shutdown of both outputs externally triggerable Peak current limitation Overvoltage protection Average current sensing by noise filtering 1.2 General Remarks The TDA 16888 comprises the complete control for power factor controlled switche...