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參數(shù)資料
| 型號： | TEA1506T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | GreenChip SMPS control IC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | 3.90 MM, MS-012, SOT-108-1, PLASTIC, SO-14 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大小： | 122K |
| 代理商： | TEA1506T |
2003 Sep 09
11
Philips Semiconductors
Product specification
GreenChip
II SMPS control IC
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
Control pin protection
If pin CTRL is open-circuit or not connected, a fault
condition is assumed and the converter will stop switching.
Operation will recommence as soon as the fault condition
is removed.
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.11). 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 supplied from pin DRAIN,
the R
SS
value will not affect the V
CC
current during start-up.
Driver
The driver circuit to the gate of the power MOSFET has a
current sourcing capability of 135 mA typical and a current
sink capability of 560 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
----------------------------------------------
I
R
×
(
)
–
R
sense
=
τ
R
SS
C
SS
×
=
handbook, halfpage
CSS
RSS
Isense
Rsense
ISS
Vocp
start-up
MGU237
5
0.5 V
Fig.11 Soft start.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1506T/N1,118 | 功能描述:DC/DC 開關控制器 IC CTLR SMPS PS SW MODE RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TEA1506T/N1,518 | 功能描述:開關變換器、穩(wěn)壓器與控制器 GRNCHIP2 SMPS CNTRLR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TEA1507 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChipII SMPS control IC |
| TEA1507P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChipII SMPS control IC |
| TEA1507P/N1,112 | 功能描述:轉(zhuǎn)換 - 電壓電平 SMPS GREENCHIP II RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
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