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| 型号： | TEA1742T |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 150 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 3.90 MM, PLASTIC, MS-012, SOT96-1, SOP-8 |
| 文件页数： | 13/17页 |
| 文件大小： | 99K |
| 代理商： | TEA1742T |
TEA1742T_1
NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 01 — 10 February 2009
5 of 17
NXP Semiconductors
TEA1742T
GreenChip PFC controller
7.
Functional description
7.1 General control
The TEA1742T contains a controller for a power factor correction circuit. A typical
conguration is shown in Figure 3.
7.1.1 Start-up and UnderVoltage LockOut (UVLO)
The control logic activates the internal circuitry when the voltage on pin VCC passes the
Vstartup level. First, the soft start capacitor on the PFCSENSE pin is charged. When the
soft start capacitor on the PFCSENSE pin is charged, the PFC circuit is activated. See
When one of the protection functions is activated, the converter stops switching. For a
restart protection the VCC has to be pulled below Vth(UVLO) to reset the protection. For a
latched protection (OTP), the VCC has to drop below about 4 V (typ).
Fig 3.
Typical conguration
76
5
4
3
2
1
TEA1742T
014aaa736
8VCC
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1742T/N1,118 | 功能描述:DC/DC 开关控制器 GreenChip PFC controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TEA1750 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:The TEA1750 combines a controller for Power Factor Correction (PFC) and a flyback controller. |
| TEA1750T | 制造商:PHILIPS 制造商全称: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 开关控制器 GREENCHIPIII RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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