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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)： | 5/24頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TEA1533T |
2002 Aug 23
5
Philips Semiconductors
Product specification
GreenChip
TM
II SMPS control IC
TEA1533P; TEA1533AP
PINNING
FUNCTIONAL DESCRIPTION
The TEA1533 is the controller of a compact flyback
converter, and is situated at the primary side. An auxiliary
winding of the transformer provides demagnetization
detection and powers the IC after start-up.
The TEA1533 can operate in multi modes (see Fig.4).
The next converter stroke is started only after
demagnetization of the transformer current (zero current
switching), while the drain voltage has reached the lowest
voltage to prevent switching losses (green function). The
primary resonant circuit of the primary inductance and
draincapacitorensuresthisquasi-resonantoperation.The
design can be optimized in such a way that zero voltage
switching can be reached over almost the universal mains
range.
To prevent very high frequency operation at lower loads,
the quasi-resonant operation changes smoothly in fixed
frequency PWM control.
At very low power (standby) levels, the frequency is
controlled down, via the VCO, to a minimum frequency of
approximately 25 kHz.
Start-up, mains enabling operation level and
undervoltage lock-out
Initially, the IC is self supplying from the rectified mains
voltage via pin DRAIN (see Figs 11 and 12). Supply
capacitor C
VCC
is charged by the internal start-up current
source to approximately 4 V or higher, depending on the
voltage on pin DRAIN.
SYMBOL PIN
DESCRIPTION
V
CC
GND
CTRL
DEM
1
2
3
4
supply voltage
ground
control input
input from auxiliary winding for
demagnetization timing, overvoltage
and overpower protection
programmable current sense input
gate driver output
high voltage safety spacer, not
connected
drain of external MOS switch, input for
start-up current and valley sensing
I
sense
DRIVER
HVS
5
6
7
DRAIN
8
handbook, halfpage
MGU507
TEA1533P
TEA1533AP
1
2
3
4
VCC
GND
CTRL
DEM
DRAIN
HVS
DRIVER
Isense
8
7
6
5
Fig.3 Pin configuration.
handbook, halfpage
VCO
fixed
quasi resonant
P (W)
MGU508
f
25
175
Fig.4 Multi modes operation.
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PDF描述 |
|---|---|
| TEA1541 | SMPS control IC with synchronization function |
| TEA1541P | SMPS control IC with synchronization function |
| TEA1552 | GreenChipII SMPS control IC |
| TEA5594 | AM/FM radio receiver circuit |
| TEA5710TD-T | AM/FM Receiver Circuit |
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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