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)： 11/45頁
文件大?。?/td> 1318K
代理商： TPS55383PWPRG4
Inductor Selection
IN
OUT
V
- V
L
I
=
D
(3)
Maximum Output Capacitance
(
)
SS
CLx
RIPPLE
LOAD
OUT max
OUT
t
1
C
I
V
2
=
-
-
÷
÷
è
è
(4)
Minimum Output Capacitance
Compensation For The Feedback Loop
(
)
600000
Fm
TPS55386
6
1.5
10
t
V
- V
ON
-6
IN
OUT
19.7
e
50
10
L
=
é
ù
ê
ú
+
÷
ê
ú
÷
è
ê
ú
(5)
www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008
Calculate the inductance value so that an output ripple current between 300 mA and 900 mA results. Lower
ripple current results in discontinuous mode (DCM) operation at a lower DC load current, while higher ripple
current generally allows for higher closed loop bandwidth.
NOTE:
For wide input range converters, highest input voltage results in the highest ripple
current.
NOTE:
The load current at which the overcurrent protection (OCP) engages is dependent on
the amount of ripple current, because it is the peak current in the switch that is
With internal pulse-by-pulse current limiting and a fixed soft-start time, there is a maximum output capacitance
which may be used before startup problems begin to occur. If the output capacitance is large enough so that the
device enters a current-limit protection mode during startup, then there is a possibility that the output never
reaches regulation. Instead, the TPS5538x simply shuts down and attempts a restart as if the output were
short-circuited to ground. The maximum output capacitance (including bypass capacitance distributed at the
load) is given by Equation 4:
Ensure the value of capacitance selected for closed-loop stability is compatible with the requirements of Soft
To determine the components necessary for compensating the feedback loop, the controller frequency response
characteristics must be understood and the desired crossover frequency selected. The best results are obtained
if 10% of the switching frequency is used as this closed loop crossover frequency. In some cases, up to 20% of
the switching frequency is also possible.
With the output filter components selected, the next step is to calculate the DC gain of the modulator. For the
TPS55386:
The gain of the TPS55383 modulator is approximated by:
Copyright 2008, Texas Instruments Incorporated
19
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

*
*
*