參數(shù)資料
型號(hào)： TPS40131RHBTG4
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(yè)數(shù)： 15/40頁(yè)
文件大?。?/td> 940K
代理商： TPS40131RHBTG4
www.ti.com
L
R
6 k
DCR
C
=
W
(35)
f
IN
RAMP
SW
V
6
L
DCR
2
V
>
(36)
(
)
IN
OUT
PK
OC(dc )
SW
IN
V
I
27.32 A
2
L
f
V
-
=
+
=
(37)
ILIM
PK
V
3.75
I
DCR
205 mV
=
=
(38)
( )
3
B
LIM
REF
LIM
10
R
V
4.02k
V
÷
=
=
W
÷
-
è
(39)
SLVS635 – FEBRUARY 2007
The simplified equation to determine if the design produces sub-harmonics is shown in Equation 35.
This condition is satisfied in this design. Both CSRT1 and CSRT2 are recommended to connect to GND with a
1-
μF capacitor for the purpose of eliminating noise.
ILIM (Pin 15) Current Limit
The overcurrent protection level is calculated with equations below.
IOC(dc) is the DC overcurrent protection level for each phase. In this design, it is 25 A per phase. DCR is 2 m. A
resistor divider is connected from VREF (pin 9) to GND to provide an accurate VILIM voltage. Choose a value of
10 k
for the top resistor, and then the bottom resistor is calculated using Equation 39.
OVSET (Pin 2) Output Voltage Setting
A resistor divider is connected from VOUT to GND to set the overvoltage protection threshold. In this design, the
resistor divider is the same as the output voltage setting resistor divider, so the OVSET level is 16% of the set
output voltage.
UVLO (Pin 22) Undervoltage Lockout
UVLO is connected to the input voltage and GND with a resistor divider. The resistor connected to VIN is chosen
to be 10 k
and the resistor connected to GND is selected to be a value of 2.49 k. When the input voltage is
higher than 5 V, the chip is enabled.
PGOOD (Pin 16) Powergood
PGOOD is connected to BP5 with a 10-k
resistor.
VOUT, GSNS and DIFFO (Pin 3) (Pin 4) (Pin 5)
VOUT and GSNS are connected to the remote sensing output connector. DIFFO is connected to the feedback
resistor divider. If the differential amplifier is not used, VOUT and GSNS should be grounded, and DIFFO is left
open.
22
相關(guān)PDF資料
PDF描述
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TPS40132RHBRG4 功能描述:DC/DC 開(kāi)關(guān)控制器 2Ch Multiphase Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40132RHBT 功能描述:DC/DC 開(kāi)關(guān)控制器 2Ch Multiphase Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
TPS40132RHBTG4 功能描述:DC/DC 開(kāi)關(guān)控制器 2Ch Multiphase Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
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