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| 型号： | MAX5058AUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/25页 |
| 文件大小： | 0K |
| 描述： | IC DRVR SYNC RECT 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 电源 |
| 电流 - 电源： | 2.5mA |
| 电源电压： | 4.5 V ~ 28 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 管件 |
Parallelable Secondary-Side Synchronous Rectifier
Driver and Feedback-Generator Controller ICs
V OUT
R1
R2
COMPV
13
INV
C28
VSO
VSP
17
E/A
14
15
RSA
VSN
16
(
)
V OUT = 1 + R2
I REF
50 μ A
I REF
12
R12
R1
? V IREF
V IREF = (50 μ A) ? R12
Figure 12. Remote-Sense Amplifier Connection for VOUT > 2.5V (or any Other Arbitrary Voltage)
9) Select a value for R 1 and calculate R 2 for V OUT =
3.3V:
11 shows this configuration. Figure 12 shows the use of
the remote-sense amplifier with a voltage-divider. The
R 2 =
R 1 = 19.1k Ω
V IREF
V OUT - V IREF
R 1
remote-sense amplifier has an input bias current of
100μA. The impedance of R1 and R2 must be kept low
in this configuration to avoid excessive errors in the out-
put-voltage set point.
R 2 = 21.882k Ω .
Select the nearest 1% value.
R 2 = 21.8k Ω .
When margining is not used, substitute R 12 for R eq
in step 8 and go to step 9.
Remote-Sense Amplifier
Use the remote-sense amplifier (RSA in Figure 1) to
directly sense the voltage across the load, compensat-
ing for voltage drops in PC board tracks or load con-
nection wires. The remote-sense amplifier is a
unity-gain amplifier with sufficient bandwidth to not
interfere with the normal operation of the voltage-con-
trol loop. Direct sensing of the output voltage is possi-
ble if the output voltage is between 0.5V to 2.5V. Figure
Current Sharing
When multiple power modules are providing power to
the same load, the load current must be shared equally
to provide the best reliability and thermal distribution.
The MAX5058/MAX5059 contain circuitry that enable
current sharing among paralleled power supplies with-
out requiring an explicit controlling master circuit.
Current sharing is accomplished by connecting togeth-
er the current-share bus pins (SFP and SFN) of all par-
alleled power supplies (see Figure 13), thus creating a
current-force/share bus. The voltage level on this differ-
ential bus is proportional to the output current of the
power supply that has the highest current compared to
the other supplies. The number of power supplies that
can be paralleled with this method is limited only by
practical considerations.
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5058AUI+ | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5058AUI+T | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5058AUI-T | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5058EUI | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5058EUI+ | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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