參數(shù)資料
型號(hào)： TPS54350MPWPREP
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 7.2 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, PLASTIC, HTSSOP-16
文件頁(yè)數(shù)： 17/36頁(yè)
文件大?。?/td> 1057K
代理商： TPS54350MPWPREP
www.ti.com
1
VIN
UVLO
PWRGD
RT
SYNC
ENA
COMP
PWRPAD
17
VSENSE
AGND
PGND
VBIAS
LSG
PH
BOOT
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U1
TPS54350PWP
C9
10
F
C3
0.1
F
C4
R4
4.7
C11
3300 pF
1
L1
10
H
+
C2
100
F
C6
82 nF
R3
768
C7
1800 pF
R2
374
R5
137
R1
1 k
C8
33 nF
6 V 18 V
VOUT 3.3 V @ 3 A
D1
1
F
2
D1: On Semiconductor MBRS340T3
L1: Vishay IHLP-5050CE
C2: Sanyo 6TPC100M
C1
47
F
TPS54350-EP
SGLS308 – OCTOBER 2005
Figure 25 shows an application where a clamp diode is used in place of the low-side FET. The TPS54350
incorporates an integrated pull-down FET so that the circuit remains operating in continuous mode during light
load operation. A 3-A, 40-V Schottky diode such as the Motorola MBRS340T3 or equivalent is recommended.
Figure 25. 3.3-V Power Supply With Schottky Diode
Figure 25 is an example of power supply sequencing using two TPS54350s. U1 is used to generate an output of
3.3 V, while the voltage output of U2 is set at 1.8 V, typical I/O and core voltages for microprocessors and
FPGAs. In the circuit, the 3.3-V supply is designed to power up first. The PWRGD pin of U1 is tied to the ENA
pin of U2 so that the 1.8-V supply starts to ramp up after the 3.3-V supply is within regulation. Since the RT pin
of U1 is floating, the SYNC pin is an output. This synchronization signal is fed to the SYNC pin of U2. The RT pin
of U2 has a 110-k
resistor to ground, and the SYNC pin for this device acts as an input. The 1.8-V supply
operates synchronously with the 3.3-V supply and their switching node rising edges are approximately 1805 out
of phase allowing for a reduction in the input voltage ripple. See Figure 19 for this waveform.
24
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54350MPWPREPG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Input,3A Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 制造商:Texas Instruments 功能描述:IC's
TPS54350PWPG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWPR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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