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| 型号： | FAN6793MY |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO CM 16SOIC |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 130kHz |
| 占空比： | 70% |
| 电源电压： | 10 V ~ 22 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 标准包装 |
| 产品目录页面： | 1221 (CN2011-ZH PDF) |
| 其它名称： | FAN6793MYDKR |
January 2010
FAN6791 / FAN6793
Highly Integrated, Dual-PWM Combination Controller
Features
High-Voltage Startup
Low Operating Current
Interleaved Stand-by PWM / Forward PWM Switching
Green Mode Stand-by PWM / Forward PWM
Linearly Decreasing Stand-by PWM Frequency to
20kHz
Remote On / Off
AC Brownout Protection
Forward PWM with Soft-Start
Frequency Hopping to Reduce EMI Emissions
Cycle-by-Cycle Current Limiting for Stand-by PWM /
Forward PWM
Leading-Edge Blanking for Stand-by PWM / Forward
PWM
Synchronized Slope Compensation for Stand-by
PWM / Forward PWM
GATE Output Maximum Voltage Clamp
V DD Over-Voltage Protection (OVP)
V DD Under-Voltage Lockout (UVLO)
Internal Open-Loop Protection for Stand-by PWM /
Forward PWM
Constant Power Limit for Stand-by PWM / Forward
PWM
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
PC-ATX Power Supplies
? 2008 Fairchild Semiconductor Corporation
FAN6791/3 ? Rev. 1.0.3
Description
The highly integrated FAN6791/3 dual PWM
combination controller provides several features to
enhance the performance of converters.
To minimize standby power consumption, a proprietary
green-mode function provides off-time modulation to
linearly decrease the switching frequency at light-load
conditions. To avoid acoustic-noise problems, the
minimum PWM frequency is set above 20kHz. This
green-mode function enables the power supply to meet
international power conservation requirements. With the
internal high-voltage startup circuitry, the power loss
due to bleeding resistors is also eliminated. To further
reduce power consumption, FAN6791/3 is
manufactured using the CMOS process, which allows
an operating current of only 6mA.
FAN6791/3 integrates a frequency-jittering function
internally to reduce EMI emissions of a power supply
with minimum line filters. The built-in synchronized slope
compensation achieves stable peak-current-mode
control. The proprietary internal line compensation
ensures constant output power limit.
FAN6791/3 provides many protection functions,
including brownout protection, cycle-by-cycle current
limiting, and an internal open-loop protection circuit to
ensure safety should an open-loop or output short-
circuit failure occur. PWM output is disabled until V DD
drops below the UVLO lower limit when the controller
restarts. As long as V DD exceeds ~24.5V, the internal
OVP circuit is triggered.
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN6793NY | 功能描述:监控电路 Highly Intgrtd Dual PWM Combo Controller RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| FAN6861 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low-Cost, Highly Integrated, Green-Mode PWM Controller for Peak Power Management |
| FAN6861TY | 功能描述:IC REG CTRLR FLYBK ISO PWM 6SSOT RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| FAN6862 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| FAN6862_10 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
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