高性能PFC与PWM组合控制器TDA16888资料P39.pdf

High Performance Power Combi Controller TDA 16888 1 Overview 1.1 Features PFC Section – IEC 1000-3 compliant – Additional operation mode as auxiliary power supply P-DIP-20-5 – 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-DSO-20-1 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 – f PWM =f PFC Type Ordering Code Package TDA 16888 Q67000-A9284-X201-K5 P-DIP-20-5 TDA 16888G Q67000-A9310-A702 P-DSO-20-1 New type Semiconductor Group 1 Data Sheet 1998-05-06 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 filteri