Integrated Critical Mode PFC / Quasi-Resonant Current Mode PWM Controller

This application note presents practical step-by-step design considerations for power supply system employing Fairchild’s FAN6921 PFC/PWM combination controller, which combines a Boundary Conduction Mode (BCM) Power Factor Correction (PFC) controller and QuasiResonant (QR) PWM controller. Figure 1

mWSaver™ 功率因数控制器 (PFC) CrCM + QR PWM 控制器，欠压保护

高度集成的 FAN6921AMR 将功率因数校正 (PFC) 控制器和准谐振 PWM 控制器组合在一起。集成不但提供了高性价比的设计，而且可以减少外部元件的数量。对于 PFC，FAN6921AMR 使用受控导通时间技术来提供调节的 DC 输出电压，并执行自然的功率因数校正。通过创新的THD优化器，可以减少过零触发期间的输入电流失真，改进THD性能。对于PWM，FAN6921MR提供若干功能来增强电源系统性能：谷值检测、绿色模式运行和高/低线路过功率补偿。保护功能包括次级端开环和带自动恢复的过流保护；外部闩锁触发、通过RT引脚和外部NTC电阻实现的可调节过温保护、内部过温关断、VDD引脚OVP、 • 集成式PFC和反激式控制器\n• 临界模式PFC控制器\n• PFC级的零电流检测\n• PWM级的准谐振运行\n• QR PWM 级的内部最小值 tOFF 8 µs\n• PWM的10ms内部软启动\n• 掉电保护\n• 高/低线路过功率补偿\n• 自动恢复过流保护\n• 自动恢复开环保护\n• 外部闩锁触发（RT引脚）\n• 可调过温闩锁（RT引脚）\n• VDD引脚与输出电压OVP（闩锁）\n• 内部温度关断(140°C);

mWSaver™ Combo Power Factor Correction + QR Flyback Controller, Brown Out Protection

The highly integrated FAN6921BMR combines Power Factor Correction (PFC) controller and Quasi-Resonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921BMR uses a controlled on-time technique to provide a regulated DC output voltage and • Integrated PFC and Flyback Controller\n• Small foot print design\n• Critical Mode PFC Controller\n• High PF and Low THD under 300 W\n• Zero-Current Detection for PFC Stage\n• High PF and Low THD\n• Quasi-Resonant Operation for PWM Stage\n• High Efficiency\n• Internal Minimum tOFF 8µs for QR PWM St;

mWSaver™ 功率因数控制器 (PFC) CrCM + QR PWM 控制器，欠电压保护

高度集成的 FAN6921ML 将功率因数校正 (PFC) 控制器和准谐振 PWM 控制器组合在一起。集成不但提供了高性价比的设计，而且可以减少外部元件的数量。对于PFC，FAN6921ML使用受控导通时间技术来提供调节DC输出电压，执行自然的功率因数校正。通过创新的 THD 优化器，FAN6921ML 可以减少过零期间的输入电流失真，从而改进 THD 性能。对于PWM，FAN6921ML借助谷底检测、绿色模式运行和高/低线路过功率补偿来增强电源系统性能。FAN6921ML提供：次级端开环和过流保护、外部闩锁触发、通过 RT 引脚和外部 NTC 电阻实现可调节过温保护、内部过温关断、VDD 引 •集成式 PFC 和反激式控制器\n•临界模式PFC控制器\n•PFC级的零电流检测\n•PWM级的准谐振运行\n•QR PWM级的内部最小值tOFF 8µs\n•PWM的10ms内部软启动\n•欠压保护\n•H/L线路过功率补偿\n•闩锁保护（FB引脚）\n•过功率/过载保护\n•短路保护\n•开环保护\n•外部闩锁触发（RT引脚）\n•可调过温闩锁（RT引脚）\n•VDD引脚与输出电压OVP（闩锁）\n•内部温度关断 (140°C);

Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller

Description The highly integrated FAN6921ML combines a Power Factor Correction (PFC) controller and a Quasi−Resonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921ML uses a controlled on−time technique to provide a regulated

Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller

Description The highly integrated FAN6921ML combines a Power Factor Correction (PFC) controller and a QuasiResonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921ML uses a controlled on-time technique to provide a regulated DC

Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller

Description The highly integrated FAN6921ML combines a Power Factor Correction (PFC) controller and a QuasiResonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921ML uses a controlled on-time technique to provide a regulated DC

Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller

Description The highly integrated FAN6921ML combines a Power Factor Correction (PFC) controller and a Quasi−Resonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921ML uses a controlled on−time technique to provide a regulated

Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller

This application note presents practical step-by-step design considerations for a power supply system employing Fairchild’s FAN6920 PFC / PWM combination controller, an integrated Boundary Conduction Mode (BCM) Power Factor Correction (PFC) controller and Quasi-Resonant (QR) PWM controller. Figure

Integrated Critical-Mode PFC and Quasi-Resonant

文件：1.56416 Mbytes Page：24 Pages

封装/外壳：16-SOIC（0.154"，3.90mm 宽） 包装：卷带（TR）剪切带（CT） 描述：IC PFC CTRLR CRM 16SOP 集成电路（IC） PFC（功率因数校正）

Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller

文件：719.02 Kbytes Page：20 Pages

Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller

文件：719.02 Kbytes Page：20 Pages

封装/外壳：16-SOIC（0.154"，3.90mm 宽） 包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 描述：IC PFC CTRLR CRM 16SOP 集成电路（IC） PFC（功率因数校正）

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

General Description The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a multiplexed VFD tube to a VFD controller, such as the MAX6850–MAX6853, or to a microcontroller. The MAX6921/MAX6931 are also ideal for driving static VFD tubes or telecom rel

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

General Description The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a multiplexed VFD tube to a VFD controller, such as the MAX6850–MAX6853, or to a microcontroller. The MAX6921/MAX6931 are also ideal for driving static VFD tubes or telecom rel

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

General Description The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a multiplexed VFD tube to a VFD controller, such as the MAX6850–MAX6853, or to a microcontroller. The MAX6921/MAX6931 are also ideal for driving static VFD tubes or telecom rel

5V TO 3.3V/2.5V 25 WATT DUAL OUTPUT INTEGRATED SWITCHING REGULATOR

文件：195.4 Kbytes Page：5 Pages

TOP LED DEVICE

文件：557.33 Kbytes Page：11 Pages