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參數資料
| 型號： | TPS54310MPWPREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 775 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | PLASTIC, HTSSOP-20 |
| 文件頁數： | 18/19頁 |
| 文件大小： | 487K |
| 代理商： | TPS54310MPWPREP |
APPLICATION INFORMATION
RT
SYNC
SS/ENA
VBIAS
PWRGD
COMP
VSENSE
AGND
20
19
18
17
4
3
2
1
VIN
PH
BOOT
PGND
PwrPAD
16
15
14
10
9
8
7
6
5
13
12
11
U1
TPS54310PWP
C8
10
F
C7
0.047
F
L1
1.2
H
+
C9
180
F
4 V
C11
1000 pF
1
2
VO
GND
J3
C5
3900 pF
R2
3.74 k
R4
3.74 k
C4
100 pF
R3
71.5 k
C3
0.1
F
1
R1
10 k
J1
2
1
VI
GND
PWRGD
+
C2
1
Optional
C6
R6
2700 pF
732
R5
10 k
R7
49.9
VIN
INPUT VOLTAGE
SETTING THE OUTPUT VOLTAGE
FEEDBACK CIRCUIT
O
R5 x 0.891
R4 =
V
- 0.891
(1)
SLVS818 – APRIL 2008 ..................................................................................................................................................................................................... www.ti.com
Figure 10 shows the schematic diagram for a typical TPS54310 application. The TPS54310 (U1) can provide up
to 3 A of output current at a nominal output voltage of 3.3 V. For proper thermal performance, the thermal pad
under the TPS54310 integrated circuit needs to be soldered well to the printed-circuit board.
Figure 10. TPS54310 Schematic
The input to the circuit is a nominal 5 VDC, applied at
The output voltage of the TPS54310 can be set by
J1. The optional input filter (C2) is a 220-F POSCAP
feeding back a portion of the output to the VSENSE
capacitor, with a maximum allowable ripple current of
pin using a resistor divider network. In the application
3 A. C8 is the decoupling capacitor for the TPS54310
circuit of Figure 10, this divider network is comprised
and must be located as close to the device as
of resistors R5 and R4. To calculate the resistor
possible.
values to generate the required output voltage use
The resistor divider network of R5 and R4 sets the
output voltage for the circuit at 3.3 V. R5, along with
Start with a fixed value of R5 and calculate the
R2, R6, C4, C5, and C6 forms the loop compensation
required R4 value. Assuming a fixed value of 10 k
network for the circuit. For this design, a Type 3
for R5, the following table gives the appropriate R4
topology is used.
value for several common output voltages:
OUTPUT VOLTAGE (V)
R4 VALUE (K
)
1.2
28.7
1.5
14.7
1.8
9.76
2.5
5.49
3.3
3.74
8
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS54310-EP
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS54310PWP | 功能描述:直流/直流開關調節器 3A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54310PWP | 制造商:Texas Instruments 功能描述:BUCK PWM REG FET 3A SMD 54310 |
| TPS54310PWPG4 | 功能描述:直流/直流開關調節器 3A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54310PWP-P | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| TPS54310PWPR | 功能描述:直流/直流開關調節器 3A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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