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參數資料
型號: MAX5950ETJ+
廠商: Maxim Integrated
文件頁數: 22/28頁
文件大?。?/td> 552K
描述: IC PWM CTRL HOT-SW 12V 32TQFN-EP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 60
類型: 熱交換控制器
應用: 通用型,PCI Express?
內部開關:
電源電壓: 8 V ~ 16 V,±5V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-WFQFN 裸露焊盤
供應商設備封裝: 32-TQFN-EP(5x5)
包裝: 管件
12V PWM Controller with Hot-Swap
22   ______________________________________________________________________________________
PC Board Layout Guidelines
Use the following guidelines to layout the switching
voltage regulator:
1)  Place the PWM_IN and DREG bypass capacitors
close to the MAX5950 PGND pin. Place the REG
bypass capacitor close to the AGND pin.
2)  Minimize the area and length of the high-current
loops from the input capacitor, upper switching
MOSFET, inductor, and output capacitor back to
the input capacitor negative terminal.
3)  Keep short the current loop formed by the lower
switching MOSFET, inductor, and output capacitor.
4)  Keep AGND and PGND isolated and connect them
at one single point close to the negative terminal of
the input filter capacitor.
5)  Run current-sense lines CS+ and CS- close to each
other to minimize the loop area.
6)  Avoid long traces between the REG/DREG bypass
capacitors, driver output of the MAX5950, MOSFET
gates, and PGND. Minimize the loop formed by the
REG bypass capacitors, bootstrap diode, bootstrap
capacitor, the MAX5950, and upper MOSFET gate.
7)  Place the bank of output capacitors close to the
load.
8)  Distribute the power components evenly across the
board for proper heat dissipation.
9)  Provide enough copper area at and around the
switching MOSFETs and the inductor to aid in ther-
mal dissipation.
10)Use 2oz copper to keep the trace inductance and
resistance to a minimum. Thin copper PC boards
can compromise efficiency since high currents are
involved in the application. Also, thicker copper
conducts heat more effectively, thereby reducing
thermal impedance.
HOT-SWAP CONTROLLER
THERMAL
SHUTDOWN
IN
1.220V
AGND
MPWRGD
PWREN
CHARGE
PUMP
EN
5V
0.6V
PWRFLT
GATE
PWM_IN
HSENSE
SET DOMINANT
IOUT
PGI
IN
DCENO
R
Q
S
165ms RISING-
EDGE DELAY
FILTER
10礎
 
HUVLO
REG
165ms RISING
EDGE DELAY
FILTER
10ms RISING-
EDGE DELAY
FILTER
MAX5950
Simplified Block Diagrams
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相關代理商/技術參數
參數描述
MAX5950ETJ+ 功能描述:電壓模式 PWM 控制器 12V PWM Controller w/Hot-Swap RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX5950ETJ+T 功能描述:電壓模式 PWM 控制器 12V PWM Controller w/Hot-Swap RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX5950ETJ-T 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX5950EVKIT 制造商:Maxim Integrated Products 功能描述:12V PWM CONTROLLER WITH HOT-SWAP - Rail/Tube
MAX5951ETJ 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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