- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98246 > TLE8366EV50 (INFINEON TECHNOLOGIES AG) SWITCHING REGULATOR, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | TLE8366EV50 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012, SOP-8 |
| 文件頁數(shù)： | 17/19頁 |
| 文件大小： | 1358K |
| 代理商： | TLE8366EV50 |
TLE8366
Buck Regulator
Data sheet
7
Rev. 1.0, 2009-05-18
5
Buck Regulator
5.1
Description
5.1.1
Arrangement
The step-down (or buck) regulator consists of several functional blocks, which shall be explained in the following:
The oscillator, the regulator, the safety functions, the gate driver and the internal MOSFET.
5.1.1.1
Regulator Block
The oscillator creates a saw-tooth signal, which is supplied to the PWM comparator and the Schmitt-Trigger 1. The
frequency of the oscillator might be synchronized to an external frequency connected to pin sync.
The Error Amplifier compares the feedback signal to the reference voltage. At the variable voltage version the
feedback pin shall be connected to an external resistor divider, the fixed voltage versions contain an internal
resistor divider. The soft start function is included by the ramp generator between the reference voltage source
and the error amplifier. It generates a defined ramp after the initialization of the device. (The device is initialized
after signal EN turns to high (with supply voltage at VS present) or with rising Supply voltage (with EN = H
connected to VS) or at restarting after a thermal shutdown. The ramp starts, if the Buck Driver Supply (BDS)
external capacitor is charged.
Only for the variable voltage version: If the feedback signal at pin FB gets lost, an internal pull-up current source
will pull the pin too high thus preventing the output voltage from overshooting.
A compensation network needs to be connected to the output of the error amplifier using pin COMP.
The PWM comparator creates the Pulse-Width Modulated (PWM) signal by comparing the error amplifier output
with the saw-tooth signal from the oscillator.
5.1.1.2
Safety Functions Block
The safety functions block consists of the Error-Flip Flop, the Nor1 Gate and the PWM-Flip-Flop.
The Error Flip-Flop collects the failure events such as the over-current shutdown of the internal MOSFET, the
output overvoltage shutdown and the temperature shutdown.
The over-current shutdown signal is created by the OC comparator. It detects the voltage across an internal shunt
resistor. If the current exceeds the reference level, the pulse is shut down and the MOSFET switched off.
The bootstrap under-voltage shutdown is created by the BDS UV comparator, which compares the bootstrap
capacitor voltage to a reference level. If the bootstrap capacitor voltage is too low, the pulse will be shut down and
the MOSFET switched off.
If the output voltage exceeds a reference value, the pulse will also be shut down and the MOSFET switched off.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLS2205DL | VOICE COIL MOTOR CONTROLLER, 1.4 A, PDSO48 |
| TLV0831CD | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| TLV0831ID | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| TLV0831CDR | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| TLV0832CP | 2-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLE8366EV50XUMA1 | 制造商:Infineon Technologies AG 功能描述:Conv DC-DC Single Step Down 4.75V to 45V 8-Pin DSO T/R 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG BUCK 5V 1.8A DSO8 |
| TLE8366EVXUMA1 | 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG BUCK ADJ 1.8A DSO8 |
| TLE8386-2EL | 功能描述:DC/DC 開關(guān)控制器 Basic Smart Boost Controller 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(fēng)格: 封裝 / 箱體:CPAK |
| TLE83862ELXT | 功能描述:DC/DC 開關(guān)控制器 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(fēng)格: 封裝 / 箱體:CPAK |
| TLE83862ELXUMA1 | 制造商:Infineon Technologies AG 功能描述:DC DC Cntrlr Single-OUT Boost 4.75V to 45V Input 14-Pin SSOP 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG CTRLR BST PWM CM 14-SSOP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。