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参数资料
| 型号： | TPS65023RSBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-40 |
| 文件页数： | 31/53页 |
| 文件大小： | 1274K |
| 代理商： | TPS65023RSBT |
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DIL + Vout
1 *
Vout
Vin
L
I
Lmax +
Ioutmax )
DIL
2
www.ti.com
SLVS670I – JUNE 2006 – REVISED JULY 2010
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 are 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, TPS65023B 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 5 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 5. This is needed
because during heavy load transient the inductor current rises above the value calculated under Equation 5.
(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.
Copyright 2006–2010, Texas Instruments Incorporated
37
Product Folder Link(s) : TPS65023, TPS65023B
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相关代理商/技术参数 |
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| TPS65023RSBT | 制造商:Texas Instruments 功能描述:Power Management IC |
| TPS65023RSBTG4 | 功能描述:电池管理 6-Channel Power Management IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650240EVM-331 | 功能描述:电源管理IC开发工具 TPS650240EVM331 Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS650240RHBR | 功能描述:电池管理 Pwr Mgmt ICs for Li-Ion Powered Sys RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS650240RHBRG4 | 功能描述:电池管理 Pwr Mgmt ICs RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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