参数资料
| 型号： | MAX8555AEVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/10页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX8555 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 电源管理，O 环控制器/负荷分载 |
| 已用 IC / 零件： | MAX8555A |
| 已供物品： | 板 |
MAX8555A Evaluation Kit
Component Suppliers
SUPPLIER
Fairchild
Sanyo
Taiyo Yuden
TDK
Vishay
PHONE
888-522-5372
619-661-6835
800-348-2496
847-803-6100
203-268-6261
FAX
—
619-661-1055
847-925-0899
847-390-4405
203-452-5670
WEBSITE
www.fairchildsemi.com
www.sanyo.com
www.t-yuden.com
www.component.tdk.com
www.vishay.com
Note: Please indicate that you are using the MAX8555A when contacting these component suppliers.
Quick Start
The MAX8555A EV kit is a fully assembled and tested
surface-mount board. Follow the steps below for simple
board operation. Do not turn on the power supplies
until all connections are completed:
1) Verify that a shunt is connected across jumpers JU1
and JU2 (TIMER function set to 250kHz).
2) Connect the positive terminal of a 10V power supply
to the VDD1 and VDD2 pads. Connect the ground
terminal of this power supply to the GND pads.
3) Connect the positive terminal of a 1.5V power sup-
ply to the VIN1 banana jack. Connect the ground
terminal of this power supply to the GND banana
jack.
4) Connect the positive terminal of another 1.5V power
supply to the VIN2 banana jack. Connect the
ground terminal of this power supply to the GND
banana jack.
5) Connect a voltmeter across the VOUT and GND
terminals.
6) Connect an oscilloscope to test points TP1 and TP2
on the EV kit.
7) Connect a voltmeter or an oscilloscope to the
FAULT1 and FAULT2 pads to capture the fault
signals. Use oscilloscope probes with 10M ?
impedance.
8) Turn on the 10V power supply.
9) Turn on both 1.5V power supplies.
10) Verify that the voltmeter at VOUT measures 1.5V
and test points TP1 and TP2 measure approximate-
ly 6.5V with respect to ground.
11) Verify that the fault-out signals FAULT1 and FAULT2
measure approximately 1.5V.
12) The EV kit is ready to interface to a system for fur-
ther testing.
Detailed Description
The MAX8555A EV kit implements two identical, parallel
circuits that demonstrate the functionality of the
MAX8555A ORing MOSFET controller, which provides
redundancy and fault isolation in highly reliable power
systems. The EV kit is configured to operate in 1.5V bus
systems; however, the EV kit can be modified to oper-
ate in 0.5V to 3.3V power systems. The EV kit can han-
dle up to 20A of throughput current.
During startup, both EV kit circuits monitor the voltage
difference between the input power supplies connected
to VIN1 or VIN2 and the power bus VOUT. Once the
voltage difference is less than the internal threshold of
0.05V (typ), and the input power-supply voltage at VIN1
or VIN2 is greater than the undervoltage threshold, the
respective MAX8555A controller turns on the associat-
ed MOSFETs in the circuit. Turning on these MOSFETs,
connects the input power supplies to the system bus
without disturbing the system voltage. The EV kit then
continuously monitors the supply current and voltages
to protect against undervoltage, overvoltage, and
reverse-current fault conditions. The MAX8555A con-
troller uses the MOSFETs R DS(ON) resistance to monitor
forward and reverse-current conditions. At undervolt-
age, overvoltage, or reverse-current fault conditions, a
logic-low signal is asserted on the fault outputs
( FAULT1 or FAULT2 ). The MOSFETs are turned off to
isolate the inputs (VIN1 or VIN2) from VOUT.
The OVP and the UVP thresholds are adjustable and
can be disabled. The UVP threshold is set to 0.75V and
the OVP threshold is set to 2V.
Input Voltage Sources
The MAX8555A EV kit requires one voltage source
capable of providing 8V to 13.25V to the VDD1 and
VDD2 pads to power the two MAX8555A MOSFET con-
trollers (U1 and U2, respectively). The input voltage
requirement at VDD1 and VDD2 can be lowered to 3V
to 5.5V by installing 0 ? resistors at R8 and R16. The EV
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8555ETB+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8555ETB+T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8555ETB-T | 功能描述:功率驱动器IC 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 |
| MAX8555EUB | 功能描述:功率驱动器IC 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 |
| MAX8555EUB+ | 功能描述:功率驱动器IC .5-3.3V ORing MOSFET Controller 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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