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参数资料
| 型号： | TPS61002DGSRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 8/25页 |
| 文件大小： | 456K |
| 代理商： | TPS61002DGSRG4 |
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007
SINGLE- AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279C – MARCH 2000 – REVISED APRIL 2003
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
With those parameters it is possible to calculate the value for the inductor:
L
+
V
BAT
x V
OUT
– V
BAT
I
L
xfx V
OUT
(4)
Parameter f is the switching frequency and
IL is the ripple current in the inductor, i.e., 20% x IL.
In this example, the desired inductor has the value of 12
H. With this calculated value and the calculated cur-
rents, it is possible to chose a suitable inductor. Care has to be taken that load transients and losses in the circuit
can lead to higher currents as estimated in equation 3. Also, the losses in the inductor caused by magnetic hys-
teresis losses and copper losses are a major parameter for total circuit efficiency.
The following inductors from different suppliers were tested. All work with the TPS6100x converter within their
specified parameters:
Table 1. Recommended Inductors
VENDOR
PART NUMBER
Coilcraft
DO1608P Series
DS1608P Series
DO3308 Series
Coiltronics
UP1B Series
UP2B Series
Murata
LQH3N Series
Sumida
CD43 Series
CD54 Series
CDR74B Series
TDK
NLC453232T Series
capacitor selection
The major parameter necessary to define the output capacitor is the maximum allowed output voltage ripple of
the converter. This ripple is determined by two parameters of the capacitor, the capacitance and the ESR. It is
possible to calculate the minimum capacitance needed for the defined ripple, supposing that the ESR is zero.
C
min +
I
OUT
x V
OUT
– V
BAT
fx
VxV
OUT
(5)
Parameter f is the switching frequency and
V is the maximum allowed ripple.
With a chosen ripple voltage of 15 mV, a minimum capacitance of 10
F is needed. The total ripple will be larger
due to the ESR of the output capacitor. This additional component of the ripple can be calculated using the fol-
lowing equation:
V
ESR +
I
OUT
xR
ESR
(6)
相关PDF资料 |
PDF描述 |
|---|---|
| TPS61000DGS | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS61003DGSR | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS61002DGS | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS61000DGST | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS61007DGSRG4 | 1.3 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS61002EVM-156 | 功能描述:电源管理IC开发工具 Low Input Vltg Boost Conv 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 |
| TPS61003 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SINGLE-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD |
| TPS61003DGS | 功能描述:直流/直流开关调节器 2.5V 100mA Boost RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS61003DGSG4 | 功能描述:直流/直流开关调节器 Lo-In Voltage Boost Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS61003DGSR | 功能描述:开关变换器、稳压器与控制器 Lo-In Voltage Boost Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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