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參數(shù)資料
| 型號： | TEA1533P |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | GreenChip SMPS control IC |
| 中文描述： | 2 A SWITCHING CONTROLLER, 205 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TEA1533P |
2002 Aug 23
7
Philips Semiconductors
Product specification
GreenChip
TM
II SMPS control IC
TEA1533P; TEA1533AP
handbook, full pagewidth
MGU510
1.5 V
VCTRL
Isense
fosc
fmax
fmin
Vx (mV)
CTRL
current
comparator
cycle
skipping
X2
V
I
1
0
Vx
150 mV
OSCILLATOR
DRIVER
DRIVER
Vx (mV)
dV2
dV1
150
Fig.7 The cycle skipping circuitry.
The voltage levels dV
1
and dV
2
are fixed in the IC to 50 mV (typical) and 18 mV (typical) respectively.
Demagnetization
The system will be in discontinuous conduction mode all
the time. The oscillator will not start a new primary stroke
until the secondary stroke has ended.
Demagnetization features a cycle-by-cycle output
short-circuit protection by immediately lowering the
frequency (longer off-time), thereby reducing the power
level.
Demagnetization recognition is suppressed during the first
t
suppr
time. This suppression may be necessary in
applications where the transformer has a large leakage
inductance, at low output voltages and at start-up.
If pin DEM is open-circuit or not connected, a fault
condition is assumed and the converter will stop operating
immediately. Operation will recommence as soon as the
fault condition is removed.
If pin DEM is shorted to ground, again a fault condition is
assumed and the converter will stop operating after the
first stroke. The converter will subsequently enter the safe
restart mode. This situation will persist until the
short-circuit is removed.
Minimum and maximum ‘on-time’
The minimum ‘on-time’ of the SMPS is determined by the
Leading Edge Blanking (LEB) time. The IC limits the
‘on-time’ to 50
μ
s. When the system desires an ‘on-time’
longer than 50
μ
s, a fault condition is assumed (e.g.
removed C
i
in Fig.11), the IC will stop switching and enter
the safe restart mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1533P/N1,112 | 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 |
| TEA1533T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChipTMII SMPS control IC |
| 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 |
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