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參數(shù)資料
| 型號： | TDA4605 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 631K |
| 代理商： | TDA4605 |
Semiconductor Group
40
TDA 4605
Regulation, Overload and No-Load Behaviour
When the IC has started up, it is operating in the regulation range. The potential at pin 1 typically is
400 mV. If the output is loaded, the regulation amplifier allows broader impulses (
V5 = H). The peak
voltage value at pin 2 increases up to
V2S max . If the secondary load is further increased, the
overload amplifier begins to regulate the pulse width downward. This point is referred to as the
overload point of the power supply. As the IC supply voltage
V6 is directly proportional to the
secondary voltage, it goes down in accordance with the overload regulation behaviour. If
V6 falls
below the value
V6 min , the IC goes into burst operation. As the time constant of the half-wave
charge-up is relatively large, the short-circuit power remains small. The overload amplifier cuts back
to the pulse width
tpk . This pulse width must remain possible, in order to permit the IC to start-up
without problems from the virtual short circuit, which every switching on with
V1 = 0 represents. If
the secondary side is unloaded, the loading impulses (
V5 = H) become shorter. The frequency
increases up to the resonance frequency of the system. If the load is further reduced, the secondary
voltages and
V6 increase. When V6 = V6 max , the logic is blocked. The IC converts to burst
operation. This renders the circuit absolutely safe under no-load conditions.
Behaviour when Temperature Exceeds Limit
An integrated temperature protection disables the logic when the chip temperature becomes too
high. The IC automatically interrogates the temperature and starts as soon as the temperature
decreases to permissible values.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA4605_03 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS |
| TDA46052 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 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(guān)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 |
| TDA4605-2 | 功能描述:軟開關(guān) PWM 控制器 CTRL IC FOR SWITCH MODE PWR SUPPLIES RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| TDA46052HKLA1 | 制造商:Infineon Technologies AG 功能描述:Controller Switch Mode Power Supply 8-Pin PDIP 制造商:Infineon Technologies AG 功能描述:IC POWER SUPPLY CONTROLLER 8DIP |
| TDA46053 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 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(guān)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 |
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