FAN6961 
Boundary Mode PFC Controller
fan6961边界模式控制器
Features 
ƒ  Boundary Mode PFC Controller  边界模式控制器
ƒ  Low Input Current THD 低输入电流失真
ƒ  Controlled On-Time PWM  实时脉宽调制控制
ƒ  Zero-Current Detection零电流检测
ƒ  Cycle-by-Cycle Current Limiting  逐周期电流限制
ƒ  Leading-Edge Blanking instead of RC Filtering领先的消隐而阻容滤波
ƒ  Low Start-up Current: 10µA Typical  低启动电流：10µ典型
ƒ  Low Operating Current: 4.5mA Typical低工作电流：4.5ma典型
ƒ  Feedback Open-Loop Protection反馈环保护
ƒ  Programmable Maximum On-Time (MOT) 可编程最大的时间（MOT）
ƒ  Output Over-Voltage Clamping Protection输出过电压钳位保护
ƒ  Clamped Gate Output Voltage 16.5V钳位输出电压16.5v
Description说明
The FAN6961 is an 8-pin, boundary-mode, PFC controller IC intended for controlling PFC pre-regulators. The FAN6961 prov ides a controlled on-time to regulate the output DC voltage and achieve natural power factor correction. The maximum on-time of the external switch is programmable to ensure safe operation during AC brownouts. An innovative multi-vector error amplifier is built in to provide rapid transient response and precise output voltage clamping. A built-in circuit disables the controller if the output feedb
ack loop is opened. The start-up current is lower than 20µA and the operating current has been reduced to under 6mA. The supply voltage can be up to 25V, maximizing application flexibility.
这是一fan69618引脚，boundary-mode，功率因数校正控制器集成电路用于控制功率因数校正pre-regulators。提供的fan6961控制时间调节的直流输出电压，实现自然功率因数校正。最大的按时的外部开关是可编程的，以确保安全在交流电压不足。一个创新的多向量误差放大器是建立在提供快速瞬变反应和精确的输出电压钳位。内置电路禁用如果输出反馈控制器回路打开。启动电流低于20µ一和操作电流减少到了下6ma。电源电压可高达25 V，最大化应用的灵活性。
Applications应用
ƒ  Electric Lamp Ballasts  电子镇流器
ƒ  AC-DC Switching Mode Power Converter滤波电容的开关模式电源转换器
ƒ  Open Frame Power Supplies and Power Adapters开放框架电源和电源适配器
ƒ  Flyback Power Converters with ZCS / ZVS反激式电源转换器和电流/电压
Ordering Information  订购信息       
   
Part Number
零件编号
Operating Temperature Range
工作温度范围
Package
封装
中文翻译英文转换器Eco Status
生态地位
Packing Method
包装方法
FAN6961SZ
-40°C to +125°C
8-Pin,Small Outline Package (SOP)
8引脚，小外形封装（SOP）
RoHS
（欧盟认证）
  Tape & Reel
FAN6961DZ
-40°C to +125°C
8-Pin, Dual In-line Package (DIP)
8引脚，双列直插式封装（DIP）
RoHS
（欧盟认证）
Tube
FAN6961SY
-40°C to +125°C
8-Pin,Small Outline Package (SOP)
8引脚，小外形封装（SOP）
Green
（环保）
Tape & Reel
Figure 2 Function Block Diagram    图2功能块图
       
Marking Information  标记信息
F- Fairchild Logo  F-f飞兆公司标志
Z- Plant Code    Z-工厂代码
X- Year Code      X-年代码
Y- Week Code    Y-星期码
TT: Die Run Code  TT:模具运行代码
T: Package type (S=SOP,  D=DIP) T:封装类型（ S=SOP,  D=DIP）
P:  Z: Pb Free P:  Z:无铅的  Y: Green Compound  Y:绿复合
M: Manufacture Flow Code M:制造流程的代码
Figure 3.  Marking Information 图3 标记信息
Pin Configuration  引脚配置
Figure 4 DIP and SOP pin Configreatiom(Top View)
图4倾角和针configreatiom（前视图）
Pin Definitions引脚定义
Pin#
引脚
Name
名称
Description
描述
1
INV
Inverting input of the error amplifier. INV is connected to the converter output via a resistive divider. This pin is also used for ove r-voltage clamping and open-loop feedback protection.
误差放大器的反相输入端。是连接到转换器的输出通过一个电阻分压器。这也是用于爱r-voltage夹紧和开环反馈保护。
2
COMP
The output of the error amplifier. To create a precise clamping protection, a compensation
network between this pin and GND is suggested. 
误差放大器的输出。创建一个精确的夹紧保护，补偿网络在这个引脚和接地的建议。
3
MOT
Maximum On Time  A resistor from MOT to GND is used to determine the maximum on-time of the external power MOSFET. The maximum output  power of the converter is a function of the maximum on time.
最大时间的不接地电阻是用来确定最大时的外部功率场效应晶体管。最大输出功率转换器是一个功能的最大时间。
4
CS
Current Sense . Input to the over-current protecti on comparator. When the sensed voltage
across the sense resistor reaches the internal threshold (0.8V), the switch is turned off to
activate cycle-by-cycle current limiting.
电流检测。输入过流保护比较。当检测电压通过检测电阻达到内部阈值（0.8v），该开关关闭激活逐周期电流限制。
5
ZCD
Zero Current Detection . This pin is connected to an auxiliary winding via a resistor to detect the zero crossing of the switch current. When t he zero crossing is detected, a new switching cycle is started. If it is connected to GND, the device is disabled.
零电流检测。该引脚连接到一个辅助绕组通过一个电阻检测过零开关电流。当他过零检测，一个新的切换周期开始。如果它是连接到接地，该设备被禁用。
6
GND
Ground. The power ground and signal ground. Placing a 0.1µF decoupling capacitor between VCC and GND is recommended.
地面。电源接地和信号地。把0.1个µ女去耦电容电压和接地之间的建议。
7
GATE
Driver output. Totem-pole driver output to drive t he external power MOSFET. The clamped gate output voltage is 16.5V. 
驱动输出。图腾柱驱动输出驱动外部功率场效应管他。钳位输出电压是16.5v。
8
VCC
Power supply. Driver and control circuit supply voltage.
电源。驱动控制电路的电源电压。
Absolute Maximum Ratings绝对最大额定值
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. All voltage values, except differential voltage, are given with respect to GND pin.
应力超过最大额定值可能损坏设备。设备可能无法或以上的推荐工作条件和可操作性，强调对这些水平是不推荐。此外，扩大接触应力高于推荐工作条件可能影响器件可靠性。绝对最大额定压力等级。所有电压值，除非差分电压，是鉴于对引脚。

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