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參數資料
| 型號： | NCP1217P133G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Enhanced PWM Current−Mode Controller for High−Power Universal Off−Line Supplies |
| 中文描述： | 0.5 A SWITCHING CONTROLLER, 146 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數： | 2/18頁 |
| 文件大小： | 249K |
| 代理商： | NCP1217P133G |
NCP1217, NCP1217A
http://onsemi.com
2
Figure 1. Typical Application Example
EMI
FILTER
UNIVERSAL
INPUT
+
+
NCP1217
Adj
+
V
OUT
Aux.
FB
CS
Gnd
HV
V
CC
Drv
1
2
3
4
8
7
6
5
Ramp Adjustment
See Application
Section
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1
Adj
Adjust the skipping peak current
This pin lets you adjust the level at which the cycle skipping process takes
place. Shorting this pin to ground permanently disables the skip cycle
feature.
By bringing this pin above 3.1 V, you permanently shut off the device.
PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Function
Description
2
FB
Sets the peak current setpoint
By connecting an optocoupler to this pin, the peak current setpoint is ad-
justed accordingly to the output power demand.
3
CS
Current sense input
This pin senses the primary current and routes it to the internal compara-
tor via an L.E.B. By inserting a resistor in series with the pin, you control
the amount of ramp compensation you need.
4
Gnd
The IC ground
5
Drv
Driving pulses
The driver’s output to an external MOSFET.
6
V
CC
Supplies the IC
This pin is connected to an external bulk capacitor of typically 22 F.
7
NC
This unconnected pin ensures adequate creepage distance.
8
HV
Ensures a clean and lossless
startup sequence
Connected to the highvoltage rail, this pin injects a constant current into
the V
CC
capacitor during the startup sequence.
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相關代理商/技術參數 |
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| NCP1217P65 | 功能描述:電流型 PWM 控制器 Enhanced Current RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1217P65G | 功能描述:電流型 PWM 控制器 Enhanced Current Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1218 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Controller with Adjustable Skip Level and External Latch Input |
| NCP1218AD65R2G | 功能描述:電流型 PWM 控制器 ANA PWM CONTROLLER RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1219 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Controller with Adjustable Skip Level and External Latch Input |
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