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| 型號： | TPS40056PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, HTSSOP-16 |
| 文件頁數(shù)： | 4/32頁 |
| 文件大?。?/td> | 747K |
| 代理商： | TPS40056PWPG4 |
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TPS40056
SLVS612 APRIL 2006
12
www.ti.com
APPLICATION INFORMATION
The current limit programming resistor (RILIM) is calculated using equation (13). Care must be taken in choosing
the values used for VOS and ISINK in the equation. In order to ensure the output current at the overcurrent level,
the minimum value of ISINK and the maximum value of VOS must be used.
R
ILIM +
I
OC
R
DS(on)[max]
I
SINK
)
V
OS
I
SINK
(
W)
where:
D ISINK is the current into the ILIM pin and is 8.6 A, minimum
D IOC is the overcurrent setpoint which is the DC output current plus one-half of the peak inductor current
D VOS is the overcurrent comparator offset and is 30 mV, maximum
UDG02136
HDRV
CLOCK
VVINVSW
SS
7 CURRENT LIMIT TRIPS
(HDRV CYCLE TERMINATED BY CURRENT LIMIT
TRIP)
7 SOFT-START CYCLES
VILIM
tBLANKING
Figure 4. Typical Current Limit Protection Waveforms
SYNCHRONIZING TO AN EXTERNAL SUPPLY
The TPS40056 can be synchronized to an external clock through the SYNC pin. Synchronization occurs on the
falling edge of the SYNC signal. The synchronization frequency should be in the range of 20% to 30% higher
than its programmed free-run frequency. The clock frequency at the SYNC pin replaces the master clock
generated by the oscillator circuit. Pulling the SYNC pin low programs the TPS40056 to freely run at the
frequency programmed by RT.
(13)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS40056PWPR | 功能描述:DC/DC 開關(guān)控制器 Wide Vin Synch Buck DC/DC Contr 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 |
| TPS40056PWPRG4 | 功能描述:DC/DC 開關(guān)控制器 Wide Vin Synch Buck DC/DC Contr 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 |
| TPS40057 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE INPUT SYNCHRONOUS BUCK CONTROLLER |
| TPS40057PWP | 功能描述:DC/DC 開關(guān)控制器 Wide Input Sync Buck src/sink w/prebias 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 |
| TPS40057PWP | 制造商:Texas Instruments 功能描述:CONTROLLER IC |
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