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| 型号： | NCP1217AD100R2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM CM OVP HV 8SOIC |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 频率范围： | 90kHz ~ 110kHz |
| 输入电压： | 8.3 V ~ 16 V |
| 工作温度： | 0°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
NCP1217, NCP1217A
Enhanced PWM Current--Mode
Controller for High--Power
Universal Off--Line Supplies
1
Housed in an SO--8 or PDIP--7 package, the NCP1217 represents
the enhanced version of the NCP1203--based controllers. Due to its
high drive capability, NCP1217 drives large gate--charge MOSFETs,
which together with internal ramp compensation and built--in
overvoltage protection, ease the design of modern AC/DC adapters.
NCP1217 offers a true alternative to UC384X--based designs.
With an internal structure operating at different fixed frequencies
(65–100–133 kHz), the controller features a high--voltage startup FET,
which ensures a clean and loss less startup sequence. Its current--mode
control topology provides an excellent input audio--susceptibility and
inherent pulse--by--pulse control. Internal ramp compensation easily
prevents subharmonic oscillations from taking place in continuous
conduction mode designs.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the so--called
skip cycle mode and provides excellent efficiency at light loads.
Because this occurs at a user adjustable low peak current, no acoustic
noise takes place.
The NCP1217 features two efficient protective circuitries: 1) In
presence of an overcurrent condition, the output pulses are disabled
and the device enters a safe burst mode, trying to restart. Once the
default has gone, the device auto--recovers. 2) If an external signal
(e.g. a temperature sensor) pulls Pin 1 above 3.2 V, output pulses are
immediately stopped and the NCP1217 stays latched in this position.
Reset occurs when the V CC collapses to ground, e.g. the user unplugs
the power supply.
Features
?
Current--Mode with Adjustable Skip--Cycle Capability
?
Built--in Internal Ramp Compensation
?
Auto--Recovery Internal Output Short--Circuit Protection
?
Internal 1.0 ms Soft--Start (NCP1217A Only)
8
8
1
http://onsemi.com
MARKING
DIAGRAMS
8
SOIC--8 17xxx
D1, D2 SUFFIX ALYW
CASE 751 G
1
PDIP--8 P1217xxxx
N SUFFIX AWL
CASE 626 YYWWG
1
xxxx = Specific Device Code
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G
=
Pb--Free Package
PIN CONNECTIONS
Adj 1 8 HV
?
Limited Duty--Cycle to 50% (NCP1217A Only)
FB 2
7
NC
?
?
?
?
?
?
?
?
?
Full Latchoff if Adjustment Pin is Brought High
Extremely Low No--Load Standby Power
Internal Temperature Shutdown
500 mA Peak Current Capability
Fixed Frequency Versions at 65 kHz, 100 kHz and 133 kHz
Direct Optocoupler Connection
Internal Leading Edge Blanking
SPICE Models Available for TRANsient and AC Analysis
These are Pb--Free Devices
CS 3 6 V CC
GND 4 5 Drv
(Top View)
DEVICE MARKING INFORMATION
See detailed device marking information in the ordering
information section on page 17 of this data sheet.
ORDERING INFORMATION
Typical Applications
? High Power AC/DC Converters for TVs, Set--Top Boxes, etc.
? Offline Adapters for Notebooks
? Telecom DC--DC Converters
? All Power Supplies
See detailed ordering and shipping information in the ordering
information section on page 17 of this data sheet.
? Semiconductor Components Industries, LLC, 2010
December, 2010 -- Rev. 7
1
Publication Order Number:
NCP1217/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1217AD100R2G | 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1217AD133R2 | 功能描述:电流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1217AD133R2G | 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1217AD65R2 | 功能描述:电流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1217AD65R2G | 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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