基于FSQ510的RD-267 4.2W电源设计方案
基于fsq510的rd-267 4.2w电源设计方案
fairchild 公司的fsq510是用于谷底开关转换器,具有低emi和高效率, 内部集成了700v的ldmos功率开关,内置的软起动时间为5ms,主要用在lcd tv, lcd监视器,pc和白色家电的辅助电源.本文介绍fsq510主要特性,方框图,典型应用电路以及采用fsq510的rd-267 4.2w电源参考设计的电路和所用变压器的主要特性和电路.
fsq510, fsq510h, and fsq510m:green mode fairchild power switch (fps™) for valley switching converter – low emi and high efficiency
a valley switching converter (vsc) generally shows lower emi and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. the fsq510 (h or m) is an integrated valley switching pulse width modulation (vspwm) controller and sensefet specifically designed for offline switch-mode power supplies (smps) for valley switching with minimal external components. the vs-pwm controller includes an integrated oscillator, under-voltage lockout (uvlo), leading-edge blanking (leb), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry.
compared with discrete mosfet and pwm controller solutions, the fsq510 (h or m) can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability.
this device provides a platform for cost-effective designs of a valley switching flyback converters.
fsq510主要特性:
uses an ldmos integrated power switch
optimized for valley switching converter (vsc)
low emi through variable frequency control and inherent frequency modulation
high efficiency through minimum drain voltage switching
extended valley switching for wide load ranges
small frequency variation for wide load ranges
advanced burst-mode operation for low standby power consumption
pulse-by-pulse current limit
protection functions: overload protection (olp), internal thermal shutdown (tsd) with hysteresis
under-voltage lockout (uvlo) with hysteresis
internal startup circuit
internal high-voltage sensefet: 700v
built-in soft-start: 5ms
fsq510应用:
auxiliary power supplies for lcd tv, lcd monitor, personal computer, and white goods
图1.fsq510内部方框图
图2.fsq510典型应用电路图
参考设计 rd-267:采用fsq510的4.2w设计
指标:
图3. 参考设计 rd-267电路图
图4. 参考设计rd-267的变压器电路图
华夏银行“雁群行动”生态伙伴大会在京举行，IBM 被授予“科技类伙伴”
TPS92692-Q1 Buck-Boost电路中的OVP电路设计
ARM DS-5到底是什么？ 为什么不建议使用DS-5开发STM32？
声智科技全面系统地展示了自主研发的远场智能交互系统开放平台
感觉我找到噪声系数差3dB的原因了
基于FSQ510的RD-267 4.2W电源设计方案
动力电池技术升级标准和安全性受关注
纳微半导体闪亮登场慕尼黑上海电子展，氮化镓最新工业级应用产品首次公开亮相
安科瑞医疗IT系统在手术室的应用
基于总线和组态软件WINCC实现水力机组状态监测系统的设计
不得不关注的六个LED照明技术细节
全国首条智慧地下电缆线路的监控信息正式接入
助力低碳，深耕低温锡膏技术引领行业工艺发展
有哪些平价的蓝牙耳机？四款适合学生的平价蓝牙耳机推荐
冠层分析仪的作用是什么，它有哪些应用
传感器前级信号处理
UWB室内定位高精度定位应用的宠儿
ADI新数字隔离器封装确保医疗和工业应用安全
基于A2DP框架的近距离无线音频通信研究
联发科公布第三季财报 营收达670亿元并表示对AI的投入已有相当的成果
fairchild 公司的fsq510是用于谷底开关转换器,具有低emi和高效率, 内部集成了700v的ldmos功率开关,内置的软起动时间为5ms,主要用在lcd tv, lcd监视器,pc和白色家电的辅助电源.本文介绍fsq510主要特性,方框图,典型应用电路以及采用fsq510的rd-267 4.2w电源参考设计的电路和所用变压器的主要特性和电路.
fsq510, fsq510h, and fsq510m:green mode fairchild power switch (fps™) for valley switching converter – low emi and high efficiency
a valley switching converter (vsc) generally shows lower emi and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. the fsq510 (h or m) is an integrated valley switching pulse width modulation (vspwm) controller and sensefet specifically designed for offline switch-mode power supplies (smps) for valley switching with minimal external components. the vs-pwm controller includes an integrated oscillator, under-voltage lockout (uvlo), leading-edge blanking (leb), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry.
compared with discrete mosfet and pwm controller solutions, the fsq510 (h or m) can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability.
this device provides a platform for cost-effective designs of a valley switching flyback converters.
fsq510主要特性:
uses an ldmos integrated power switch
optimized for valley switching converter (vsc)
low emi through variable frequency control and inherent frequency modulation
high efficiency through minimum drain voltage switching
extended valley switching for wide load ranges
small frequency variation for wide load ranges
advanced burst-mode operation for low standby power consumption
pulse-by-pulse current limit
protection functions: overload protection (olp), internal thermal shutdown (tsd) with hysteresis
under-voltage lockout (uvlo) with hysteresis
internal startup circuit
internal high-voltage sensefet: 700v
built-in soft-start: 5ms
fsq510应用:
auxiliary power supplies for lcd tv, lcd monitor, personal computer, and white goods
图1.fsq510内部方框图
图2.fsq510典型应用电路图
参考设计 rd-267:采用fsq510的4.2w设计
指标:
图3. 参考设计 rd-267电路图
图4. 参考设计rd-267的变压器电路图
华夏银行“雁群行动”生态伙伴大会在京举行，IBM 被授予“科技类伙伴”
TPS92692-Q1 Buck-Boost电路中的OVP电路设计
ARM DS-5到底是什么？ 为什么不建议使用DS-5开发STM32？
声智科技全面系统地展示了自主研发的远场智能交互系统开放平台
感觉我找到噪声系数差3dB的原因了
基于FSQ510的RD-267 4.2W电源设计方案
动力电池技术升级标准和安全性受关注
纳微半导体闪亮登场慕尼黑上海电子展，氮化镓最新工业级应用产品首次公开亮相
安科瑞医疗IT系统在手术室的应用
基于总线和组态软件WINCC实现水力机组状态监测系统的设计
不得不关注的六个LED照明技术细节
全国首条智慧地下电缆线路的监控信息正式接入
助力低碳，深耕低温锡膏技术引领行业工艺发展
有哪些平价的蓝牙耳机？四款适合学生的平价蓝牙耳机推荐
冠层分析仪的作用是什么，它有哪些应用
传感器前级信号处理
UWB室内定位高精度定位应用的宠儿
ADI新数字隔离器封装确保医疗和工业应用安全
基于A2DP框架的近距离无线音频通信研究
联发科公布第三季财报 营收达670亿元并表示对AI的投入已有相当的成果