參數(shù)資料
型號： TPS55383PWPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 7 A DUAL SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16
封裝： PLASTIC, HTSSOP-26
文件頁數(shù)： 27/45頁
文件大?。?/td> 1318K
代理商： TPS55383PWPRG4
(
)
RIPPLE1
RIPPLE1( total)
OUT1
SW
max
RIPPLE1
I
0.661A
V
0.050 V
8
C
f
8
8.2 F
600 kHz
ESR1
0.024
F
I
0.661A
-
÷
÷
m
è
è
=
W
(42)
(
)
RIPPLE
RIPPLE(total)
OUT1
SW
max
RIPPLE
I
0.547 A
V
0.050 V
8
C
f
8 12.4 F
600 kHz
ESR
0.033
F
I
0.547 A
-
÷
÷
m
è
è
=
W
(43)
(
)
(
)
RMS _ CIN
OUT
I
D
1 D
3 A
0.5
1
0.5
1.5 A
=
-
=
-
=
(44)
FB
BIAS
OUT
FB
V
R
V
=
-
(45)
(
)
6
7
ON
3
M1
1.5 10
t
(1.5 10
6.68 10
)
6
IN
OUT1
600000
F
5.82 10
13.2
5.0
V
19.7
e
50 10
19.7
e
50 10
8.2 H
L
-
-
=
-
+
+
÷
÷
m
è
è
www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008
The maximum ESR to meet the ripple specification is given by:
A single 22-
F ceramic capacitor with approximately 2.5 m of ESR is selected to provide sufficient margin for
capacitance loss due to DC voltage bias.
Input Capacitor Selection
The TPS55386 datasheet recommends a 10
F (minimum) ceramic bypass capacitor on each PVDD pin. While
out of phase operation reduces input RMS current, the input capacitors must be sized to support the greater of
the two input RMS currents, or 1.5A to allow operation when one channel is at maximum load and the other is
un-loaded. The ceramic capacitor must handle the RMS input ripple current of the converter.
The RMS current in the input capacitors is estimated by:
One 1210 size 10-
F, 25-V, X5R ceramic capacitor with a 2-m ESR and a 2-A RMS current rating are selected
to bypass each PVDD input. Higher voltage capacitors minimize capacitance loss under DC bias voltage,
ensuring the capacitors have sufficient capacitance at their working voltage.
Voltage Feedback
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 3.3-V and 5-V output, 20.5 k
is
selected, so the lower resistor is given by:
For RFB = R2 = R9 = 20.5 k and VFB = 0.80V, RBIAS1 = 3.90k and RBIAS2 = 6.5k (R4 = 3.83k and
R7 = 6.49 k
selected) for 5.0 V and 3.3 V respectively.
Compensation Components
The TPS55386 controller uses an internal transconductance error amplifier, which compares the feedback
voltage to the internal 0.80-V reference and sources a current proportional to the resulting error out of the COMP
pin. A series resistor and capacitor to ground generate an integrator with zero while a high frequency capacitor
provides a second pole to reduce the high frequency gain. The compensation loop components are selected by
the following equations with the 5.0-V output used in example calculations:
Calculate the modulator gain at DC:
(46)
Copyright 2008, Texas Instruments Incorporated
33
Product Folder Link(s): TPS55383 TPS55386
相關(guān)PDF資料
PDF描述
TPS5602IDBR 3 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30
TPS5602IDBTRG4 3 A DUAL SWITCHING CONTROLLER, 202.4 kHz SWITCHING FREQ-MAX, PDSO30
TPS5602IDBTR 3 A DUAL SWITCHING CONTROLLER, 202.4 kHz SWITCHING FREQ-MAX, PDSO30
TPS561000PWP 1.4 A SWITCHING CONTROLLER, PDSO28
TPS56100PWPR 1.4 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS55386EVM-363 功能描述:電源管理IC開發(fā)工具 TPS55386EVM-363 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS55386PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A Dual Non-Synch Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS55386PWPG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A,Dual Non-Synch Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS55386PWPR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A Dual Non-Synch Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS55386PWPRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A,Dual Non-Synch Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*