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參數(shù)資料
| 型號： | TEA1533T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | GreenChipTMII SMPS control IC |
| 中文描述： | 2 A SWITCHING CONTROLLER, 205 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | 3.90 MM, PLASTIC, SOT-108-1, SO-14 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TEA1533T |
2002 Aug 23
11
Philips Semiconductors
Product specification
GreenChip
TM
II SMPS control IC
TEA1533P; TEA1533AP
Soft start-up
To prevent transformer rattle during hiccup, the
transformer peak current is slowly increased by the soft
start function. This can be achieved by inserting a resistor
and a capacitor between pin I
sense
and the sense resistor
(see Fig.10). An internal current source charges the
capacitor to V = I
SS
×
R
SS
, with a maximum of
approximately 0.5 V.
The start level and the time constant of the increasing
primary current level can be adjusted externally by
changing the values of R
SS
and C
SS
.
The charging current I
SS
will flow as long as the voltage on
pin I
sense
is below approximately 0.5 V. If the voltage on
pin I
sense
exceeds 0.5 V, the soft start current source will
start limiting the current I
SS
. At the V
CC(start)
level, the I
SS
current source is completely switched off.
Since the soft start current I
SS
is subtracted from pin V
CC
chargingcurrent,theR
SS
valuewillaffecttheV
CC
charging
current level by a maximum of 60
μ
A (typical value).
Driver
The driver circuit to the gate of the power MOSFET has a
current sourcing capability of 170 mA typical and a current
sink capability of 700 mA typical. This permits fast turn-on
and turn-off of the power MOSFET for efficient operation.
A low driver source current has been chosen to limit the
V/
t at switch-on. This reduces Electro Magnetic
Interference (EMI) and also limits the current spikes
across R
sense
.
I
primary(max)
V
---------------R
I
R
×
(
)
–
sense
=
τ
R
SS
C
SS
×
=
handbook, halfpage
CSS
RSS
Isense
Rsense
ISS
Vocp
start-up
MGU237
5
0.5 V
Fig.10 Soft start.
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| TEA1541P | SMPS control IC with synchronization function |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1533T/N1,118 | 功能描述:電壓模式 PWM 控制器 GREENCHIP II SMPS CONTROL IC RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| TEA1533T/N1,518 | 功能描述:電壓模式 PWM 控制器 SMPS LOW STANDBY RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| TEA1533TD-T | 功能描述:電壓模式 PWM 控制器 SMPS LOW STANDBY GREENCHIP RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| TEA1541 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:SMPS control IC with synchronization function |
| TEA1541P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:SMPS control IC with synchronization function |
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