- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69511 > TPS54286PWPRG4 (TEXAS INSTRUMENTS INC) 3.6 A DUAL SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO14 PDF資料下載
參數(shù)資料
| 型號： | TPS54286PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.6 A DUAL SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, HTSSOP-14 |
| 文件頁數(shù)： | 8/52頁 |
| 文件大小： | 1110K |
| 代理商： | TPS54286PWPRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
www.ti.com
Output Voltage Regulation
V
REF
V
OUT
- VREF
R2=R1
(2)
1
2
3
4
14
13
12
11
PVDD2
BOOT2
SW2
BP
PVDD1
BOOT1
SW1
GND
TPS5428x
5
6
7
10
9
8
SEQ
ILIM2
FB2
EN1
EN2
FB1
R1
OUTPUT1
R2
UDG-07011
SLUS749C – JULY 2007 – REVISED OCTOBER 2007
to support the desired regulation voltage by the time Soft Start has completed, then
the output UV circuit may trip and cause a hiccup in the output voltage. In this case,
use a timed delay startup from the ENx pin to delay the startup of the output until the
PVDDx voltage has the capability of supporting the desired regulation voltage. See
Operating Near Maximum Duty Cycleand Maximum Output Capacitance for related
information.
Each output has a dedicated feedback loop comprised of a voltage setting divider, an error amplifier, a pulse
width modulator, and a switching MOSFET. The regulation output voltage is determined by a resistor divider
connecting the output node, the FBx pin, and GND (see Figure 20). Assuming the value of the upper voltage
setting divider is known, the value of the lower divider resistor for a desired output voltage is calculated by
where
V
REF is the internal 0.8-V reference voltage
Figure 20. Feedback Network for Channel 1
DESIGN HINT
There is a leakage current of up to 12
A out of the SW pin when a single output of
the TPS5428x is disabled. Keeping the series impedance of R1 + R2 less than 50 k
prevents the output from floating above the referece voltage while the controller output
is in the OFF state.
16
Copyright 2007, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS54290PWP | 4.6 A DUAL SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS54291PWPR | 4.6 A DUAL SWITCHING CONTROLLER, 720 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS5430DDAR | 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS5430DDAG4 | 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS5430DDA | 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS54290 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET |
| TPS54290_1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET |
| TPS54290_12 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET |
| TPS54290PWP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5-18V Dual Sync Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
| TPS54290PWPR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5-18V Dual Sync Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。