- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98063 > PTB78560CAS (TEXAS INSTRUMENTS INC) 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE PDF資料下載
參數(shù)資料
| 型號： | PTB78560CAS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | DIP-11 |
| 文件頁數(shù)： | 4/27頁 |
| 文件大?。?/td> | 643K |
| 代理商： | PTB78560CAS |
第1頁第2頁第3頁當(dāng)前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
www.ti.com
APPLICATION INFORMATION
Operating Features and System Considerations for the PTB78560x DC/DC Converters
Primary-Secondary Isolation
Undervoltage Lockout
Soft-Start Power Up
t Time 5 ms/div
tDLY
II (1 A/ div)
UVLO Threshold
VI (10 V/ div)
VO (5 V/ div)
Overcurrent Protection
SLTS249 – JUNE 2005
These converters incorporate electrical isolation between the input terminals (primary) and the output terminals
(secondary). All converters are tested to a withstand voltage of 1500 VDC. This complies with UL/cUL 60950
and EN 60950 and the requirements for functional isolation. It allows the converter to be configured for either a
positive or negative input voltage source. The data sheet Terminal Functions table provides guidance as to the
correct reference that must be used for the external control signals.
The undervoltage lockout (UVLO) is designed to prevent the operation of the converter until the input voltage is
close to the minimum operating voltage. The converter is held off when the input voltage is below the UVLO
threshold, and turns on when the input voltage rises above the threshold. This prevents high start-up current
during normal power up of the converter, and minimizes the current drain from the input source during low input
voltage conditions. The converter meets full specifications when the minimum specified input voltage is reached.
The UVLO circuitry also overrides the operation of the PEN and NEN enable controls. Only when the input
voltage is above the UVLO threshold do these inputs become functional.
When the converter is first powered, the internal soft-start circuit limits how fast the output voltage can rise. The
soft-start circuit functions whenever the converter output is enabled from the PEN and NEN inputs, or when a
valid input source is first applied with the output enabled. It also functions on a recovery from a load fault,
overtemperature, or input overvoltage condition. The purpose of the soft-start feature is to limit the surge of
current drawn from the input source when the converter begins to operate. By limiting the rate at which the
output voltage rises, the magnitude of current required to charge up the load circuit capacitance is significantly
reduced.
Figure 21 shows the power-up characteristic of a PTB78560C converter. The output voltage is set to 12 V. The
soft-start circuit introduces a short time delay (typically 10-15 ms) before allowing the output to rise. The output
then progressively rises to the voltage set-point. The waveforms were recorded with a resistive load of 2.5 A.
Figure 21. Soft-Start Waveform
To protect against load faults, these converters incorporate output overcurrent protection. Applying a load to the
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PTB78560BAZ | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| PTB78560BAH | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| PTB78560CAZ | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| PTB78560AAZ | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| PTB78560AAS | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTB78560CAZ | 功能描述:DC/DC轉(zhuǎn)換器 30-W 24-V/48V Input DC/DC Converter RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTB8 | 功能描述:烙鐵 Weller Scrwdrvr Tip For TC201 .093"x800 RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| PT-B8 | 制造商:Cooper Tools / Weller 功能描述:Bulk 制造商:Cooper Hand Tools / Weller 功能描述:TIP SCREWDRIVER 2.4MM 制造商:WELLER 功能描述:TIP, SCREWDRIVER, 2.4MM |
| PTB82PS | 制造商:Amphenol Aerospace 功能描述:Conn MIL-C-26482 Circular PIN/SKT 2 POS Solder ST Panel Mount 2 Terminal 1 Port 制造商:Amphenol Aerospace 功能描述:Conn Miniature Cylindrical PIN/SKT 2 POS Solder ST Panel Mount 2 Terminal 1 Port |
| PTB-8-2PS | 制造商:Amphenol Corporation 功能描述:connector,thru bulkhead receptacle,size 8,2#20 pin to 2#20 socket contact 制造商:Amphenol Corporation 功能描述:CONN 26482 CIRC PIN/SKT 2 POS SLDR ST PNL MNT 2TERM - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。