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參數資料
型號: TPS40131RHBR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32
封裝: GREEN, PLASTIC, QFN-32
文件頁數: 6/40頁
文件大小: 940K
代理商: TPS40131RHBR
www.ti.com
Resistor Divider Calculation for VOUT, ILIM, OVSET and UVLO
R
BIAS + 0.7
R1
V
OUT * 0.7
(7)
R6 + R5
V
ILIM
0.7 * VILIM
(8)
R4 + 0.812
R3
V
OUT(ov) * 0.812
(9)
R8 + 1.0
R7
V
IN * 1.0
(10)
4
3
5
8
GSNS
DIFFO
VOUT
VREF
11
10
9
COMP
FB
+EA
+
700 mV
Error
Amplifier
Differential
Amplifier
15
ILIM
2
OVSET
TPS40131RHB
+
22
UVLO
C1
R2
R1
R5
R6
R7
R8
R3
R4
RBIAS
VIN
UDG04032
INDUCTOR DCR CURRENT SENSE
SLVS635 – FEBRUARY 2007
Use Figure 4 for setting the output voltage, current limit voltage and overvoltage setting voltage. Select RBIAS
using Equation 7. With a voltage divider from VREF, select R6 using Equation 8. WIth a voltage from DIFFO
select R4 using Equation 9. With a voltage divider from VIN, select R8 using Equation 10.
Figure 4. Use for Resistor Divider Calculations
The preferred method for sampling the output current for the TPS40131 is known as the inductor DCR method.
This is a lossless approach, as opposed to using a discrete current sense resistor which occupies board area
and impacts efficiency as well. The inductor DCR implementation is shown in Figure 5.
14
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相關代理商/技術參數
參數描述
TPS40131RHBRG4 功能描述:DC/DC 開關控制器 Two-Phase Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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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