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參數(shù)資料
| 型號(hào)： | FAN6793NY |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 68 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | GREEN, MS-001BB, DIP-16 |
| 文件頁(yè)數(shù)： | 1/20頁(yè) |
| 文件大小： | 1044K |
| 代理商： | FAN6793NY |
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January 2010
2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6791/3 Rev. 1.0.3
FA
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6791
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ion
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ont
roller
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
VDD Over-Voltage Protection (OVP)
VDD 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
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 VDD
drops below the UVLO lower limit when the controller
restarts. As long as VDD exceeds ~24.5V, the internal
OVP circuit is triggered.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN6861 | 制造商:FAIRCHILD 制造商全稱(chēng):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 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無(wú) 升壓:無(wú) 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁(yè)面:1316 (CN2011-ZH PDF) |
| FAN6862 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| FAN6862_10 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| FAN6862HRTY | 功能描述:電壓模式 PWM 控制器 Highly Int. Grn-Mode PWM Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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