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參數(shù)資料
| 型號： | TPS65023QRSBRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, WQFN-40 |
| 文件頁數(shù)： | 32/54頁 |
| 文件大小： | 1546K |
| 代理商： | TPS65023QRSBRQ1 |
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DIL + Vout
1 *
Vout
Vin
L
I
Lmax +
Ioutmax )
DIL
2
SLVS927C – MARCH 2009 – REVISED MAY 2010
www.ti.com
LDO_CTRL. Register Address: 08h (read/write)
Default Value: set with DEFLDO1 and DEFLDO2
LDO_CTRL
B7
B6
B5
B4
B3
B2
B1
B0
Bit name and
RSVD
LDO2_2
LDO2_1
LDO2_0
LDO1_2
LDO1_1
LDO1_0
function
Default
DEFLDOx
Default value
UVLO
loaded by:
Read/Write
R/W
The LDO_CTRL registers can be used to set the output voltage of LDO1 and LDO2. LDO_CTRL[7] and
LDO_CTRL[3] are reserved and should always be written to 0.
The default voltage is set with DEFLDO1 and DEFLDO2 pins as described in Table 3.
LDO2 OUTPUT
LDO1 OUTPUT
LDO2_2
LDO2_1
LDO2_0
LDO1_2
LDO1_1
LDO1_0
VOLTAGE
0
1.05 V
0
1 V
0
1
1.2 V
0
1
1.1 V
0
1
0
1.3 V
0
1
0
1.3 V
0
1
1.8 V
0
1
1.8 V
1
0
2.5 V
1
0
2.2 V
1
0
1
2.8 V
1
0
1
2.6 V
1
0
3.0 V
1
0
2.8 V
1
3.3 V
1
3.15 V
Design Procedure
Inductor Selection for the DC-DC Converters
Each of the converters in the TPS65023 typically use a 2.2-mH output inductor. Larger or smaller inductor values
are used to optimize the performance of the device for specific operation conditions. The selected inductor has to
be rated for its dc resistance and saturation current. The dc resistance of the inductance influences directly the
efficiency of the converter. Therefore, an inductor with lowest dc resistance should be selected for highest
efficiency.
For a fast transient response, a 2.2-mH inductor in combination with a 22-mF output capacitor is recommended.
Equation 4 calculates the maximum inductor current under static load conditions. The saturation current of the
inductor should be rated higher than the maximum inductor current as calculated with Equation 4. This is needed
because during heavy load transient the inductor current rises above the value calculated under Equation 4.
(4)
(5)
with:
f = Switching Frequency (2.25 MHz typical)
L = Inductor Value
ΔIL = Peak-to-Peak inductor ripple current
ILMAX = Maximum Inductor current
The highest inductor current occurs at maximum Vin.
Open core inductors have a soft saturation characteristic, and they can usually handle higher inductor currents
versus a comparable shielded inductor.
38
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS65023-Q1
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| TPS65023RSBG4 | 制造商:Texas Instruments 功能描述: |
| TPS65023RSBR | 功能描述:電池管理 6Ch Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65023RSBRG4 | 功能描述:電池管理 6Ch Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65023RSBT | 功能描述:電池管理 6-Channel Power Management IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TPS65023RSBT | 制造商:Texas Instruments 功能描述:Power Management IC |
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