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參數(shù)資料
| 型號： | TPS55010RTET |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC16 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, WQFN-16 |
| 文件頁數(shù)： | 7/40頁 |
| 文件大?。?/td> | 1417K |
| 代理商： | TPS55010RTET |
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PH
VIN
GND
BOOT
VSENSE
COMP
TPS55010
EN
RT/CLK
SS
FAULT
C
SS
R
t
C
BOOT
T1
R
HS
R
LS
C
PRI
C
IN
INPUT
+5V
+
5V
_
1:2.5
C
O
C
Y
PRI
IN
V
D =
V
SLVSAV0A
– APRIL 2011 – REVISED JUNE 2011
Overview
The following design example illustrates how to determine the components for a single output isolated power
supply. TI offers an EVM (TPS55010EVM-009) with user guide (SLVU459) and excel calculator tool (SLVC363)
to expedite the design process. The support material is available on the TPS55010 product folder at www.ti.com.
Figure 24. 5V to 5V ISOLATED POWER SUPPLY Schematic
DESIGN GUIDE
– STEP-BY-STEP DESIGN PROCEDURE
Input Voltage
5V nominal (4.5V to 5.5V)
Output Voltage
5V
Output Voltage Ripple
<0.5%
Output Current
200mA
Start Voltage
4.5V
Stop Voltage
4V
PRIMARY SIDE VOLTAGE
The output voltage is a function of the primary voltage, transformer turns ratio and the diode voltage. The primary
voltage is a function of the duty cycle and input voltage, and is similar to a step down (buck) regulator as shown
in Equation 11. The primary side voltage must be lower than the minimum operating input voltage by 500 mV to
avoid maximum duty cycle problems and allow sufficient time for energy transfer during the low side power
switch on time. Typically, a primary side voltage that is 50% of the input voltage is ideal, but 20% to 80% is
acceptable. Using the design constraints, the primary side voltage could be from 3.6 V to 1.1 V. A 2.2 V primary
side voltage is selected, and the duty cycle is approximately 45%.
(11)
Copyright
2011, Texas Instruments Incorporated
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS55065EVM | 功能描述:電源管理IC開發(fā)工具 TPS55065EVM Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS55065QPWPRQ1 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Auto Buck/Boost Switching Reg. 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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS5510D | 制造商:Texas Instruments 功能描述: |
| TPS5510P | 制造商:Texas Instruments 功能描述: |
| TPS5511D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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