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參數(shù)資料
| 型號(hào)： | TPS5110PW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | GREEN, PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 10/43頁 |
| 文件大小： | 813K |
| 代理商： | TPS5110PW |
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TPS5110
SLVS025B APRIL 2002 REVISED JULY 2004
18
www.ti.com
APPLICATION INFORMATION
Table 4. EVM Input and Outputs
VIN
{
REG5V_IN
Vo1 (SBRC)
Io1 (SBRC)
Vo2 (LDO)
Io2 (LDO)
8 V to 20 V
5 V
1.8 V
6 A
1.5 V
3 A
Recommended operation voltage for the EVM
output voltage setpoint calculation
The reference voltage and the voltage divider set the output voltage. In the TPS5110, the reference voltage is
0.85 V, and the divider is composed of three resistors in the EVM design that are R01A, R01B and R03 for
switching regulator output; R10, R11 and R09 for LDO regulator output.
V
O +
R1
V
REF
R2
) V
REF
or R2
+
R1
V
REF
V
O *
V
REF
where R1 is the top resistor (k
) (R01A + R01B or R10 + R11); R2 is the bottom resistor (k) (R03 or R09);
VO is the required output voltage (V); VREF is the reference voltage (0.85 V in TPS5110). The value for R1 is
set as a part of the compensation circuit and the value of R2 may be calculated to achieve the desired output
voltage. In the EVM design, the value of R1 was determined as R01A = R01B = 10 k
for VO1, and R10 = 6.8 k
and R11 = 820
for VO2 considering stability. For VO1:
R03
+ 20 kW
0.85
1.8
* 0.85 +
17.89 k
W
Use 18 k
.
For VO2:
R09
+
(6.8 k
W ) 820)
0.85
1.5
* 0.85
+ 9.96 kW
Use 10 k
.
The values of R01A, R01B, R10 and R11 are chosen so that the calculated values of R03 and R09 are those
of standard value resistor and the VO setpoint maintains the highest precision. This can be best accomplished
by combining two resistor values. If a standard value resistor can not be applied such as R10 and R11, use a
value for R10 that is just slightly less than the desired total. A small value resistor in the range of tens or hundreds
of ohms for R11 can then be added to generate the desired final value.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS5110PWG4 | 功能描述:DC/DC 開關(guān)控制器 Sync Buck w/NMOS LDO Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS5110PWR | 功能描述:DC/DC 開關(guān)控制器 Sync Buck w/NMOS LDO Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS5110PWRG4 | 功能描述:DC/DC 開關(guān)控制器 Sync Buck w/NMOS LDO Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS51113 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SYNCHRONOUS BUCK CONTROLLER WITH HIGH-CURRENT GATE DRIVER |
| TPS51113DRCR | 功能描述:DC/DC 開關(guān)控制器 4.5-13.2V Synch Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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