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| 型号： | MAX5950ETJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 22/28页 |
| 文件大小： | 552K |
| 描述： | IC PWM CTRL HOT-SW 12V 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用型，PCI Express? |
| 内部开关： | 无 |
| 电源电压： | 8 V ~ 16 V，±5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5950EVKIT | 制造商:Maxim Integrated Products 功能描述:12V PWM CONTROLLER WITH HOT-SWAP - Rail/Tube |
| MAX5951ETJ | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ+ | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ+T | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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