參數(shù)資料
型號(hào): NCP1212P
廠商: ON SEMICONDUCTOR
元件分類: 穩(wěn)壓器
英文描述: Current Mode PWM Controller for Both Forward and Flyback Converters
中文描述: 1 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP8
封裝: PLASTIC, DIP-8
文件頁(yè)數(shù): 19/22頁(yè)
文件大?。?/td> 200K
代理商: NCP1212P
NCP1212
http://onsemi.com
19
Figure 43. Suggested Solution for Better Light Load Regulation
FB
+5 V
3 R
R
2
3
4
9 K
1
300 ns
LEB
S
Q
Q
Current
Limit
+
Output
+
Output
+
1 V
OSC
Block
Reset
Set
R
F/F
Output
CS
1
2
3
4
R2
100
3 K
0.1
Q2
PNP
VCC
R8
2.5 K
Q1
PNP
Totem Pole
Driver
The skip mode operation waveform at light load is shown in Figure 44. Where Channel 1 is the gate drive pin waveform and
Channel 2 is the CS input pin waveform.
Figure 44. Skip Mode Switching Waveform at Light Load
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