- 您现在的位置：买卖IC网 > PDF目录98210 > TEA1401T-T (NXP SEMICONDUCTORS) 1 A SWITCHING REGULATOR, 150 kHz SWITCHING FREQ-MAX, PDSO20 PDF资料下载
参数资料
| 型号： | TEA1401T-T |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 150 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | 7.50 MM, PLASTIC, MS-013AC, SOT-163-1, SOP-20 |
| 文件页数： | 5/20页 |
| 文件大小： | 119K |
| 代理商： | TEA1401T-T |
1997 Mar 07
13
Philips Semiconductors
Preliminary specication
Power plug for the universal mains
TEA1401T
APPLICATION INFORMATION
A converter with the TEA1401T consists of an input filter,
a transformer with a third winding (auxiliary), a secondary
diode with a capacitor plus other external components as
illustrated in Fig.5. The load (user) determines the
operating mode of the power plug, current or voltage
source.
The capacitor at VIC (pin 14) buffers the internal supply
voltage of the IC which is powered via Vin and/or VAT.
A sense resistor converts the primary current into a
voltage at SOURCE (pin 4). The voltage of the auxiliary
winding is converted into a current through resistor RRV
and fed to pin RV.
Nominal current and voltage are set by resistors RRI and
RRV. Output conductance of the current is nullified by
resistor RRGOUT. The band-gap voltage is converted into a
reference current by resistor RRref. Capacitor CCPFM
determines the frequency in non-SOPS mode.
There are two loop capacitors, one for current control (CI),
and the other for voltage control (CV). The impedance at
CV (pin 10) can be made more complex, if required for
stability.
The secondary diode also protects the power plug against
a short-circuited output (during the primary stroke), and
must therefore be placed inside the power plug cabinet.
A pre-load resistor or a Zener diode is required to handle
an open output which will cause an excessively high output
voltage. This is because the power plug continues
operating, provided it is connected to the mains, and thus
continuously converts energy to the secondary side, even
though it is a low, predefined level.
If a Zener diode is used, the Zener voltage must be
selected with care, because the over-voltage protection of
the IC should not be blocked. If the Zener diode voltage is
too close to the nominal output voltage of the converter no
voltage overshoot will be detected by the IC, causing
increased dissipation in the Zener during switching of the
load.
A complete diagram with preliminary component values is
shown in Fig.6. More detailed information can be found in
the
“Application Note AN96096”.
相关PDF资料 |
PDF描述 |
|---|---|
| TEA1506AP/N1,112 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| TEA1612T | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| TEA1742T | 2 A POWER FACTOR CONTROLLER, 150 kHz SWITCHING FREQ-MAX, PDSO8 |
| TEA1761T/N2 | 1.4 A SWITCHING CONTROLLER, PDSO8 |
| TEA1795T/N1 | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1402/N2,112 | 功能描述:电池管理 TEA1402/DIP18/TUBE-B RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TEA1501 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Greeny; GreenChip |
| TEA1501T/N1,118 | 功能描述:交流/直流开关转换器 GREENCHIP SMPS CONTROL IC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TEA1504 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
| TEA1506 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
发布紧急采购，3分钟左右您将得到回复。