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參數(shù)資料
| 型號： | TPS54683EVM-225 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-Amp SWIFT Regulator With Disabled Sink During Start-Up Evaulation Module(帶上電時禁止吸收電流功能的8A SWIFT穩(wěn)壓器TPS54873的評估模塊) |
| 中文描述： | 8安培的SWIFT調(diào)節(jié)器在啟動殘疾人水槽行動Evaulation模塊（帶上電時禁止吸收電流功能的8A條SWIFT的穩(wěn)壓器TPS54873的評估模塊） |
| 文件頁數(shù)： | 15/42頁 |
| 文件大?。?/td> | 908K |
| 代理商： | TPS54683EVM-225 |
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Modifications
1-5
Introduction
The TPS54x73EVM
–
225 EVM also supports alternate output filter configura-
tions by means of pads located on the back side of the PCB. The positions for
C15, C16, and C17 provide space for up to three electrolytic type surface,
mount capacitors, while the position for L2 accommodates popular inductors
such as Vishay IHLP-5050 series with a 0.5 in.
×
0.5 in. package. Since
changes in the output filter affect the overall loop response, the user may find
it desirable to change the values used in the compensation network (R1, R2,
R3, C1, C2, and C3). The 0-
resistor R8 in the feedback path is provided as
a convenient place to break the loop for testing any compensation value
changes. While the provided compensation network can provide a stable out-
put for a wide variety of output filter component values, it is always a good idea
to verify any changes to the output filter or compensation network.
The primary intended usage for the TPS54x73 device family is in applications
requiring a precharge condition on the output. These types of applications in-
clude power supplies for DSPs and microprocessors where the I/O and core
voltages must track each other within a certain amount during start-up. The
TPS54673 and TPS 54873 incorporate disable sink during start-up (DSDS) to
allow this type of functionality in the SWIFT
family of dc/dc converters. A typi-
cal design approach is to tie the output of the core voltage to the output of the
I/O voltage with a number of series diodes so that the core voltage are at a level
equal to the I/O voltage minus the drop across the diodes during start-up. The
TPS54x73EVM-225 EVM provides four series diodes, D1 through D4, and al-
lows the user to precharge the output from either the EVM input voltage or an
external source. To use the input voltage as the precharge source, install a
jumper across the J3 header. To supply an external source, use the J4 connec-
tor terminals, while leaving J3 open. Headers J5 through J8 are provided to
select the number of series diodes; install a jumper across the header to by-
pass the adjacent diode. Care must be taken to use the correct number of
diodes for the application. Under no circumstances can the output voltage be
allowed to precharge to a level higher than the preset output voltage. If this
condition occurs during start-up, the TPS54x73 device does not begin switch-
ing. If a voltage transient on the precharge voltage source causes the series
diodes to conduct, current may be sunk through the low side FET in the device,
possibly damaging the device. The actual voltage drop across the diodes dur-
ing start-up depends on the initial load condition of the circuit as well as the
ambient temperature.
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| TPS546C20AEVM2-746 | 功能描述:EVALUATION MODULE 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
| TPS546C20ARVFT | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.35V 1 Output 35A 40-LFQFN Exposed Pad 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 功能:降壓 輸出配置:正 拓撲:降壓 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:18V 電壓 - 輸出（最小值/固定）:0.35V 電壓 - 輸出（最大值）:5.5V 電流 - 輸出:35A 頻率 - 開關:200kHz ~ 1MHz 同步整流器:是 工作溫度:-40°C ~ 125°C （TJ） 安裝類型:表面貼裝 封裝/外殼:40-LFQFN 裸露焊盤 供應商器件封裝:40-LQFN-CLIP（7x5） 標準包裝:1 |
| TPS546C23EVM1-746 | 功能描述:EVAL BOARD FOR TPS546C23 制造商:texas instruments 系列:- 零件狀態(tài):在售 主要用途:DC/DC，步降 輸出和類型:2，非隔離 電壓 - 輸出:0.9V，0.9V 電流 - 輸出:35A，35A 電壓 - 輸入:5 V ~ 18 V 穩(wěn)壓器拓撲:降壓 頻率 - 開關:500kHz 板類型:完全填充 所含物品:板 使用的 IC/零件:TPS546C23 標準包裝:1 |
| TPS546C23EVM2-746 | 功能描述:EVAL BOARD FOR TPS546C23 制造商:texas instruments 系列:- 零件狀態(tài):在售 主要用途:DC/DC，步降 輸出和類型:1，非隔離 電壓 - 輸出:1.2V 電流 - 輸出:70A 電壓 - 輸入:5 V ~ 18 V 穩(wěn)壓器拓撲:降壓 頻率 - 開關:500kHz 板類型:完全填充 所含物品:板 使用的 IC/零件:TPS546C23 標準包裝:1 |
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