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电路设计->综合电路图->综合电路图->瑞萨R8C系列单片机的变频荧光灯技术解决方案

瑞萨R8C系列单片机的变频荧光灯技术解决方案

作者:angelazhang时间:2014-12-16浏览次数:685

方案描述:

Renesas product lineup includes the R8C Family of 8/16-bit MCUs with on-chip PWM (Pulse Width Modulation) generation and output functions. In particular, the 78K0 Series and the R8C/2x Series of MCUs integrate dimmer inverter control, PFC (Power Factor Correction) on/off control, and DALI communication functions, and are ideal for inverter fluorescent lamp applications such as ceiling-recessed fixtures that are compact and lightweight while consuming little power. In contrast to the conventional glow starter florescent lamps, inverter fluorescent lamps employ inverter technology which boost the switching frequency to more than 10,000 times per second, thus making a glow starter unnecessary. They also eliminate flicker and unpleasant buzzing while consuming 20% to 30% less power, thus making them more eco-friendly than the conventional lamp type. In addition, the inverter circuit can be used to adjust the light level. This is suitable for high-grade lighting fixtures and provides additional value. Recently, DALI (Digital Addressable Lighting Interface) systems employing multiple lamps have been developed.

方案文档下载: R5F21276SDFPU0.pdf

方案设计图


变频荧光灯方框图.jpg

方案关键器件表

类型
型号
厂商
说明
MCU
R5F21276SDFP#U0 
Renesas
IC R8C/27 MCU FLASH 32LQFP
PFC IC
R2A20113A 
Renesas
Suitable for low power devices, secondary coil unnecessary
Schottky barrier diode
HRB0502A 
Renesas
3-terminal face-mount outline (low VF)
Photocoupler(IGBT drive) for high voltage MOS
PS9306 (6p-SDIP)PS9506 (8p-DIP) 
Renesas
High isolation voltage (5 kV r.m.s.), 0.6 A output ;High CMR (CMR = 25 kV)




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