參數(shù)資料
型號(hào)： TEA1506AP/N1,112
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
封裝： 0.300 INCH, MO-001, SC-504-8, SOT-97-1, PLASTIC, DIP-8
文件頁(yè)數(shù)： 3/22頁(yè)
文件大?。?/td> 122K
代理商： TEA1506AP/N1,112
2003 Sep 09
11
Philips Semiconductors
Product specication
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 Isense and the sense resistor
(see Fig.11). An internal current source charges the
capacitor to V = ISS × RSS, 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 RSS and CSS.
The charging current ISS will flow as long as the voltage on
pin Isense is below approximately 0.5 V. If the voltage on
pin Isense exceeds 0.5 V, the soft start current source will
start limiting the current ISS. At the VCC(start) level, the ISS
current source is completely switched off.
Since the soft start current ISS is supplied from pin DRAIN,
the RSS value will not affect the VCC 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 Rsense.
I
primary(max)
V
ocp
I
SS
R
SS
×
()
–
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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA1506AT 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:GreenChip SMPS control IC
TEA1506AT/N1,118 功能描述:DC/DC 開(kāi)關(guān)控制器 IC SMPS CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)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(fēng)格: 封裝 / 箱體:CPAK
TEA1506AT/N1,518 功能描述:DC/DC 開(kāi)關(guān)控制器 TEA1506AT/SO14/REEL13DP//N1 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)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(fēng)格: 封裝 / 箱體:CPAK
TEA1506P 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:GreenChip SMPS control IC
TEA1506P/N1,112 功能描述:DC/DC 開(kāi)關(guān)控制器 GREENCHIP 2 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)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(fēng)格: 封裝 / 箱體:CPAK
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