參數(shù)資料
型號： TPS40210QDGQRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝： GREEN, PLATSIC, MSOP-10
文件頁數(shù)： 24/41頁
文件大?。?/td> 999K
代理商： TPS40210QDGQRQ1
( )
(
)
FET
DS on
2
RMS
P
0.50 W
R
9.8 m
2
6.13
0.674
2
I
D
<
=
W
FB
BIAS
OUT
FB
V
R
0.700 V
51.1k
R
1.53 k
V
24 V
0.700 V
W
=
W
-
(
)
(
)
OUT
OUT max
OUT min
V
24 V
R
240
I
0.1A
=
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
+
(
)
(
)
(
)
(
)
(
) (
)
f
2
ESR
OUT
2
OUT
ESR
OUT
1
2
f R
C
Z
( )
R
1
R
2 R
R
2
f C
+
p
=
+
+
+
p
(
)
(
)
(
)
(
)
(
)
(
) (
)
2
f
OUT
CO
2
1
2
20 kHz
60 m
39.8 F
Z
240
0.146
1
240
2
240
60 m
2
20 kHz
39.8 F
+
p
W
m
=
W
=
W
+
W
+
W
W +
W
p
m
(
)
f
CO
M
OUT
CO
A
K
g
Z
19.1
0.146
2.80
V
=
=
W =
COMP
CO
1
K
0.356
K
2.80
=
SLVS861D – AUGUST 2008 – REVISED APRIL 2010
www.ti.com
(55)
A target MOSFET RDS(on) of 9.8 m is calculated to limit the conduction losses to less than 250 mW. Reviewing
30-V and 40-V MOSFETs, an Si4386DY 9-m
MOSFET is selected. A gate resistor was added per Equation 30.
The maximum gate charge at Vgs = 8 V for the Si4386DY is 33.2 nC, this implies RG = 3.3
.
Feedback Divider Resistors
The primary feedback divider resistor (RFB) from VOUT to FB should be selected between 10-k and 100-k to
maintain a balance between power dissipation and noise sensitivity. For a 24-V output a high feedback
resistance is desirable to limit power dissipation so RFB = 51.1 k is selected.
(56)
RBIAS = 1.50 k is selected.
Error Amplifier Compensation
While current mode control typically requires only Type II compensation, it is desirable to layout for Type III
compensation to increase flexibility during design and development.
Current mode control boost converters have higher gain with higher output impedance, so it is necessary to
calculate the control loop gain at the maximum output impedance, estimated by Equation 57.
(57)
The transconductance of the TPS40210 current mode control can be estimated by Equation 58.
(58)
The maximum output impedance ZOUT, can be estimated by Equation 59.
(59)
(60)
The modulator gain at the desired cross-over can be estimated by Equation 61.
(61)
The feedback compensation network needs to be designed to provide an inverse gain at the cross-over
frequency for unit loop gain. This sets the compensation mid-band gain at a value calculated in Equation 62.
(62)
30
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS40210-Q1 TPS40211-Q1
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TPS40210SHKK 功能描述:電流型 PWM 控制器 Wide Inp Range Crnt Mode Boost Contrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40210SKGD1 功能描述:電流型 PWM 控制器 Wide Inp Range Crnt Mode Boost Contrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40211 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5-V TO 52-V INPUT CURRENT MODE BOOST CONTROLLER
TPS40211DGQ 功能描述:LED照明驅(qū)動器 Wide Input Rnge Crnt Mode Boost Cntrlr RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: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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