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參數(shù)資料
| 型號： | TPS40131RHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | GREEN, PLASTIC, QFN-32 |
| 文件頁數(shù)： | 2/40頁 |
| 文件大小： | 940K |
| 代理商： | TPS40131RHBR |
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Startup Sequence
UDG04031
EN/SYNC
BP5
VIN5
0.7V
1.0V
VOUT
PGOOD
SSWAIT
SS
EN_SSWAIT
Differential Amplifier (U7)
4
3
GSNS
DIFFO
VOUT
+
Differential
Amplifier
TPS40131
5
20 k
20 k
20 k
20 k
UDG04081
SLVS635 – FEBRUARY 2007
FUNCTIONAL DESCRIPTION (continued)
Figure 1 shows a typical start up with the VIN5 and BP5 applied to the controller and then the EN/SYNC being
enabled. Shut down occurs when the VIN5 is removed
Figure 1. Startup and Shutdown Sequence
The unity gain differential amplifier with high bandwidth allows improved regulation at a user-defined point and
eases layout constraints. The output voltage is sensed between the VOUT and GSNS pins. The output voltage
programming divider is connected to the output of the amplifier (DIFFO).
If there is no need for a differential amplifer, the differential amplifier can be disabled by connecting the GSNS
pin to the BP5 pin and leaving VOUT and DIFFO open. The voltage programming divider in this case should be
connected directly to the output of the converter.
Figure 2. Differential Amplifier Configuration
Because of the resistor configuration of the differential amplifier, the input impedance must be kept very low or
there will be error in setting the output voltage.
10
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| TPS40131RHBRG4 | 功能描述:DC/DC 開關(guān)控制器 Two-Phase Synch Buck Cntrlr 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 |
| TPS40131RHBT | 功能描述:DC/DC 開關(guān)控制器 2-Ph Synch Buck Cntr 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 |
| TPS40131RHBT | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu 制造商:Texas Instruments 功能描述:IC, SYNC BUCK CONTROLLER, QFN-32 |
| TPS40131RHBTG4 | 功能描述:DC/DC 開關(guān)控制器 Two-Phase Synch Buck Cntrlr 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 |
| TPS40132 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS |
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