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參數(shù)資料
| 型號： | TEA1401T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 150 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AC, SOT-163-1, SOP-20 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 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”.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1402/N2,112 | 功能描述:電池管理 TEA1402/DIP18/TUBE-B RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TEA1501 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Greeny; GreenChip |
| TEA1501T/N1,118 | 功能描述:交流/直流開關轉換器 GREENCHIP SMPS CONTROL IC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TEA1504 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
| TEA1506 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
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