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參數資料
| 型號： | TEA1791T/N1,118 |
| 廠商： | NXP Semiconductors |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 236K |
| 描述： | IC CTRLR GREENCHIP SYNC 8-SOIC |
| 標準包裝： | 2,500 |
| 系列： | GreenChip™ |
| 模式： | 間歇導電（DCM） |
| 電源電壓： | 8.5 V ~ 38 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
TEA1791T
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 7 June 2010
7 of 12
NXP Semiconductors
TEA1791T
GreenChip synchronous rectifier controller
11. Application information
A switched mode power supply with the TEA1791T consists of a primary side
discontinuous conduction mode flyback controller, a transformer, and an output stage with
a feedback circuit. A MOSFET (Q
sec
) is used for low conduction losses in the output state.
This MOSFET is controlled by the TEA1791T.
The timing for the synchronous rectifier switch is derived from the voltage sensed on the
SRSENSE pin. The resistor in the SRSENSE connection is needed to protect the
TEA1791T from excessive voltages. The R
SRSENSE
resistor should typically be 1 k?
Higher values might impair correct timing, lower values may not provide sufficient
protection.
Fig 4. Application diagram high side rectification
Fig 5. Application diagram low side rectification
V
in
TR
PRIMARY
SIDE
CONTROLLER
Q
prim
V
CC
GND DRIVER
TEA1791T
SRSENSE
Q
sec
R
SRSENSE
V
out
C
out
014aaa702
DRIVER
SRSENSE
V
CC
V
out
GND
TEA1791T
PRIMARY
SIDE
CONTROLLER
V
in
Q
sec
C
out
R
SRSENSE
Q
prim
TR
014aaa84
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TEA1792AT/1,118 | 制造商:NXP Semiconductors 功能描述:Synchronous Rectifier Controller 8-Pin SO T/R 制造商:NXP Semiconductors 功能描述:TEA1792AT/SO8/REEL13//1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC SYNC RECT CONTROLLER 8SOIC |
| TEA1792ATS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip synchronous rectifier controller |
| TEA1792ATS/1,115 | 制造商:NXP Semiconductors 功能描述:Synchronous Rectifier Controller 6-Pin TSOP T/R 制造商:NXP Semiconductors 功能描述:TEA1792ATS/SC-74/REEL7//1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC SYNC RECT CONTROLLER 6TSOP |
| TEA1792N1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip synchronous rectifier controller |
| TEA1792T/N1,118 | 功能描述:DC/DC 開關控制器 20V 0.45W 10% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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