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參數(shù)資料
| 型號(hào)： | UC3845 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | High Performance Current Mode Controllers(高性能電流模式控制器) |
| 中文描述： | 高性能電流模式控制器（高性能電流模式控制器） |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大小： | 354K |
| 代理商： | UC3845 |
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Figure 30. 27 Watt OffLine Flyback Regulator
T1 Primary: 45 Turns # 26 AWG
T1
Secondary
±
12 V: 9 Turns # 30 AWG
T1
(2 strands) Bifiliar Wound
T1
Secondary 5.0 V: 4 Turns (six strands)
T1
#26 Hexfiliar Wound
T1
Secondary Feedback: 10 Turns #30 AWG
T1
(2 strands) Bifiliar Wound
T1
Core: Ferroxcube EC353C8
T1
Bobbin: Ferroxcube EC35PCB1
T1
Gap
≈
0.01" for a primary inductance of 1.0 mH
L1 15
H at 5.0 A, Coilcraft Z7156.
L2, L3 25
H at 1.0 A, Coilcraft Z7157.
Comp/Latch
S
R
Q
1N4935
1N4935
5.0V
ref
Bias
OSC
+
+
47
100
EA
+
+
7(12)
L1
5.0V/4.0A
2200
1000
+
MUR110
MBR1635
1000
1000
10
+
+
+
L2
5.0V RTN
12V/0.3A
1N4937
L3
MUR110
±
12V RTN
12V/0.3A
T1
1.0k
470pF
3(5)
5(8)
6(10)
7(11)
22
1N4937
2.7k
3300pF
4.7k
56k
250
+
115VA
C
4.7
MDA
202
68
5(9)
+
1(1)
2(3)
4(7)
33k
0.01
1.0nF
18k
4.7k
MTP
4N50
8(14)
10
+
+
680pF
0.5
1
1
+
+
+
+
1N5819
T
UC3844, UC3845, UC2844, UC2845
http://onsemi.com
12
Test
Conditions
Results
Line Regulation:
5.0 V
±
12 V
V
in
= 95 VAC to 130 VAC
= 50 mV or
±
0.5%
= 24 mV or
±
0.1%
Load Regulation:
5.0 V
±
12 V
V
in
= 115 VAC, I
out
= 1.0 A to 4.0 A
V
in
= 115 VAC, I
out
= 100 mA to 300
mA
= 300 mV or
±
3.0%
= 60 mV or
±
0.25%
Output Ripple:
5.0 V
±
12 V
V
in
= 115 VAC
40 mV
pp
80 mV
pp
Efficiency
V
in
= 115 VAC
70%
All outputs are at nominal load currents, unless otherwise noted.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3845A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller |
| UC3845A-BW | 制造商:FCI 制造商全稱:First Components International 功能描述:Current Mode PWM Controller Low Start-Up and Operating Current |
| UC3845AD | 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3845AD1 | 功能描述:電流型 PWM 控制器 RO 511-UC3845BD 9/04 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3845AD1013TR | 制造商:STMicroelectronics 功能描述: |
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