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| 型號(hào)： | TEA1742T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 150 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT96-1, SOP-8 |
| 文件頁(yè)數(shù)： | 16/17頁(yè) |
| 文件大小： | 99K |
| 代理商： | TEA1742T |
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TEA1742T_1
NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 01 — 10 February 2009
8 of 17
NXP Semiconductors
TEA1742T
GreenChip PFC controller
The charging current Istart(soft)PFC ows as long as the voltage on pin PFCSENSE is below
0.5 V (typ). If the voltage on pin PFCSENSE exceeds 0.5 V, the soft start current source
starts limiting the current Istart(soft)PFC. As soon as the PFC starts switching, the
7.2.6 Dual boost PFC
The PFC output voltage is modulated by the mains input voltage. The mains input voltage
is measured via the VINSENSE pin. The current is sourced from the VOSENSE pin if the
voltage on the VINSENSE pin drops below 2.2 V (typ). To ensure the stability of the
switch-over 200 mV is inserted around the 2.2 V, see Figure 6.
For low VINSENSE input voltages, the output current is 8 mA (typ). This output current, in
combination with the resistors on the VOSENSE pin, sets the lower PFC output voltage
level at low mains voltages. At high mains input voltages the current is switched to zero.
The PFC output voltage will then be at its maximum. As this current is zero in this
situation, it does not effect the accuracy of the PFC output voltage.
For proper switch-off behavior, the VOSENSE current is switched to its maximum value,
8 mA (typ), as soon as the voltage on pin VOSENSE drops below 2.1 V (typ).
Fig 5.
Soft start-up of PFC
SOFT START
CONTROL
OCP
11
PFCSENSE
0.5 V
Istartup(soft)PFC ≤ 60 A
S1
RSS1
CSS1
RSENSE1
014aaa157
Fig 6.
Voltage to current transfer function for dual boost PFC
VVINSENSE
II(VOSENSE)
014aaa738
8 A
2.2 V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1742T/N1,118 | 功能描述:DC/DC 開(kāi)關(guān)控制器 GreenChip PFC controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK |
| TEA1750 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The TEA1750 combines a controller for Power Factor Correction (PFC) and a flyback controller. |
| TEA1750T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip III SMPS control IC |
| TEA1750T,518 | 制造商:NXP Semiconductors 功能描述:SYNC RECTIFIER (SR) CONTROLLER |
| TEA1750T/N1,518 | 功能描述:DC/DC 開(kāi)關(guān)控制器 GREENCHIPIII RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK |
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