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參數(shù)資料
| 型號： | NE5560 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Switched-mode power supply control circuit |
| 中文描述： | 開關電源控制電路 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 240K |
| 代理商： | NE5560 |
Philips Semiconductors
Product specification
NE/SE5560
Switched-mode power supply control circuit
1994 Aug 31
10
a. Duty Cycle —
δ — % Regulation
b. Pulse-Width Modulation
(+)
8
3.72V
3
+
–
ERROR
AMP
PWM
OUT
(–)
(–) O.C.
(–)
START/
STOP
RESET
4
5
6
–
+
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
4
3
RS
R1
VREF(3.72V)
δ
VO/VREF (%)
10
20
30
40
50
60
70
80
90
R
f
R
S
+ 20
R
f
R
S
+ 100
R
f
R
S
+ 500
SL00369
Figure 10.
100
90
80
70
60
50
40
30
20
10
0
1
2
3
4
5
6
δ (%)
V4,5,6 (V)
SL00370
Figure 11. Transfer Curve of Pulse-Width Modulator
Duty Cycle vs Input Voltage
Extra PWM Input (Pin 5)
The PWM has an additional inverting input: Pin 5. It allows for
attacking the duty cycle via the PWM circuit, independently from the
feedback and the
δMAX information. This is necessary when the
SMPS must have a real constant-current behavior, possibly with a
fold-back characteristic. However, the realization of this feature must
be done with additional external components. When not used, Pin 5
should be tied to Pin 6.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NE5560D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PACKAGE INFORMATION |
| NE5560F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LINEAR INTEGRATED CIRCUITS |
| NE5560N | 制造商: 功能描述: 制造商:undefined 功能描述: |
| NE5561 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Switched-mode power supply control circuit |
| NE556-1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual timer |
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