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參數(shù)資料
| 型號： | TLE6387GV60 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 430 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, DSO-14 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大小： | 264K |
| 代理商： | TLE6387GV60 |
TLE 6387 G
Target Datasheet Rev. 0.5
15
2001-08-27
To prevent the controller from overheating, the chip temperature is continuously
checked. If this temperature exceeds 190 °C the controller is switched into stand-by
mode until the temperature has dropped below 170 °C.
Bootstrap Driver
TLE 6387 G’s bootstrap driver comprises the bootstrap capacitor charger, an
undervoltage lockout and the gate driver.
By means of the bootstrap capacitor charger the bootstrap capacitor is quickly charged
each duty cycle. Charging occurs as long as the gate driver is switched off and the
voltage of the bootstrap capacitor does not exceed its maximum value. As soon as the
capacitor is charged or the gate driver is switched on, charging is switched off.
The gate driver is equipped with a class B push-pull output stage which is actively held
high or low respectively to prevent from unintentional switching of the driven transistor,
which otherwise may be caused by spurious signals.
To control the gate voltage rise and fall times an external resitor can be added between
GDRV and the gate of the external transistor.
4.3
Functional Block Description
Oscillator
The oscillator provides the digital clock signals required for minimum and maximum duty
cycle limitation, reset delay timing and current mode slope compensation. All of these
signals are derived from a saw-tooth ramp running at 400 kHz.
Error Amplifier OTA
EA
Being part of the voltage control loop the error amplifier OTA
EA serves to monitor the
output voltage sensed at pin 9 (FB) with respect to an internal high precision reference
voltage. Its output voltage represents the amplified difference of these input voltages.
Current Compensation Amplifier OTA
CC
OTA
CC is used to compensate the DC offset of OCACM. By means of this compensation
a large effective open loop gain of the outer voltage control loop is achieved, which
ensures an accurate output voltage.
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| TLE6389-2G V50 | 功能描述:DC/DC 開關(guān)控制器 Step-Dwn DC/DC CTRLR 5V RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 安裝風格: 封裝 / 箱體:CPAK |
| TLE63892GV | 功能描述:DC/DC 開關(guān)控制器 DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 安裝風格: 封裝 / 箱體:CPAK |
| TLE6389-2GV | 功能描述:DC/DC 開關(guān)控制器 Step-Dwn DC/DC CTRLR RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 安裝風格: 封裝 / 箱體:CPAK |
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