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參數(shù)資料
| 型號： | NCP1083DEG |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 257K |
| 描述： | IC CONV CTLR POE-PD 40W 20-TSSOP |
| 標準包裝： | 74 |
| 類型： | 以太網(wǎng)供電開關(guān)（PoE） |
| 應(yīng)用： | 遠程外設(shè)（工業(yè)控制，相機，數(shù)據(jù)訪問） |
| 內(nèi)部開關(guān)： | 是 |
| 電流限制： | 1.1A |
| 電源電壓： | 0 V ~ 57 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬）裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP-EP |
| 包裝： | 管件 |
NCP1083
http://onsemi.com
3
SIMPLIFIED APPLICATION DIAGRAMS
Figure 2. Isolated Flyback Converter with Rear Auxiliary Supply
NCP1083
Rcs
Cvddl
Cvddh
Cpd
Css
Rosc
M1
T1
Cload
LD1
Rd1
Rclass
Rilim1
Rinrush
Optocoupler
R3
R4
R5
C1
Z1
Rslope
C2
Voutput
D1
OC1
GATE
RTN
FB
VPORTN2
VDDH
VDDL
VPORTN1
CLASS
ARTN
ILIM1
INRUSH
TEST
AUX
UVLO
CS
VPORTP
Data
Pairs
Spare
Pairs
R1
R2
RJ45
DB1
DB2
Raux1
VAUX(+)
VAUX()
Raux2
Raux3
D2
D3
Cline
Z_line
COMP
SS
OSC
nCLASS_AT
Figure 2 shows the integrated PoEPD switch and DCDC controller configured to work in a fully isolated application. The
output voltage regulation is accomplished with an external optocoupler and a shunt regulator (Z1).
Figure 3. NonIsolated Flyback Converter with Rear Auxiliary Supply
NCP1083
Rcs
Cvddl
Cvddh
Cpd
Css
Rosc
M1
T1
Cload
LD1
Rd1
Rclass
Rilim1
Rinrush
Rslope
Voutput
D1
GATE
RTN
FB
VPORTN2
VDDH
VDDL
VPORTN1
CLASS
ARTN
ILIM1
INRUSH
TEST
AUX
UVLO
CS
VPORTP
Data
Pairs
Spare
Pairs
R1
R2
RJ45
DB1
DB2
Raux1
VAUX(+)
VAUX()
Raux2
Raux3
D2
D3
Cline
Z_line
COMP
SS
OSC
R3
R4
C1comp
C2comp
Rcomp
nCLASS_AT
Figure 3 shows the integrated PoEPD and DCDC controller configured in a nonisolated flyback configuration. A
compensation network is inserted between the FB and the COMP pin for overall stability of the feedback loop.
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| NCP1083DER2G | 功能描述:DC/DC 開關(guān)控制器 POE-PD 40W DC-DC AUX SUPP RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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