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| 型号： | TPS40210QDGQRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLATSIC, MSOP-10 |
| 文件页数： | 14/41页 |
| 文件大小： | 999K |
| 代理商： | TPS40210QDGQRQ1 |
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1
2
3
4
10
9
8
7
RC
DIS/EN
COMP
SS
VDD
ISNS
GDRV
GND
TPS40210
C
FB
L
C
OUT
R
OUT
V
OUT
V
IN
5
FB
6
BP
R
FB
R
SENSE
UDG-07177
R
IFLT
C
IFLT
C
HF
R
1
R
2
(
)
f
CO
M
OUT
CO
A
K
g
Z
19.1
0.146
2.80
V
=
=
W =
(
) (
) (
)
(
)
f
SW
OUT
M
2
ISNS
SW
600kHz
0.13
L
0.13
10 H
R
240
A
g
19.1
V
12m
120 12m
10 H 600kHz
R
120 R
L
m
W
=
W
W +
m
+
www.ti.com
SLVS861D – AUGUST 2008 – REVISED APRIL 2010
Control Loop Considerations
There are two methods to design a suitable control loop for the TPS4021x. The first (and preferred, if equipment
is available) is to use a frequency-response analyzer to measure the open-loop modulator and power stage gain
and to then design compensation to fit that. The usage of these tools for this purpose is well documented with
the literature that accompanies the tool and is not discussed here.
The second option is to make an initial guess at compensation, and then evaluate the transient response of the
system to see if the compensation is acceptable to the application or not. For most systems, an adequate
response can be obtained by simply placing a series resistor and capacitor (RFB and CFB) from the COMP pin to
the FB pin as shown in Figure 27.
Figure 27. Basic Compensation Network
The natural phase characteristics of most capacitors used for boost outputs combined with the current mode
control provide adequate phase margin when using this type of compensation. To determine an initial starting
point for the compensation, the desired crossover frequency must be considered when estimating the control to
output gain. The model used is a current source into the output capacitor and load.
When using these equations, the loop bandwidth should be no more than 20% of the switching frequency, f SW. A
more reasonable loop bandwidth would be 10% of the switching frequency. Be sure to evaluate the transient
response of the converter over the expected load range to ensure acceptable operation.
(22)
(23)
Copyright 2008–2010, Texas Instruments Incorporated
21
Product Folder Link(s): TPS40210-Q1 TPS40211-Q1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40210SHKK | 功能描述:电流型 PWM 控制器 Wide Inp Range Crnt Mode Boost Contrlr RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| TPS40210SKGD1 | 功能描述:电流型 PWM 控制器 Wide Inp Range Crnt Mode Boost Contrlr RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| TPS40211 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5-V TO 52-V INPUT CURRENT MODE BOOST CONTROLLER |
| TPS40211DGQ | 功能描述:LED照明驱动器 Wide Input Rnge Crnt Mode Boost Cntrlr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| TPS40211DGQ | 制造商:Texas Instruments 功能描述:DC/DC Controllers (External Switch) IC 制造商:Texas Instruments 功能描述:IC, BOOST CONTROLLER, MSOP-10 |
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