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参数资料
| 型号： | TPS40131RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | GREEN, PLASTIC, QFN-32 |
| 文件页数： | 15/40页 |
| 文件大小： | 940K |
| 代理商： | TPS40131RHBR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页当前第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40131RHBRG4 | 功能描述:DC/DC 开关控制器 Two-Phase Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40131RHBT | 功能描述:DC/DC 开关控制器 2-Ph Synch Buck Cntr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体: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 开关控制器 Two-Phase Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40132 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS |
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