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[原创] On Semi FAN65008B高性能65V 10A PWM降压电源解决方案

关键词:电源管理 DC/DC转换器 FAN65008B

时间:2018-07-03 10:38:19       作者:On Semi       来源:中电网

On Semi公司的FAN65008B是高性能65V/10A电压模式同步PWM降压稳压器,集成了高边和低边功率MOSFET,支持电压从4.5V到65V,处理连续电流高达10A.器件还包括0.67%精度基准电压0.6V,开关频率从100kHz到1MHz可编程,高性能6 mm x 6 mm PQFN封装,主要用在高压POL模块,通信基站电源,网络计算,电池管理系统和USB-PD以及工业自动化,电动工具和老虎机(赌具).本文介绍了FAN65008B主要特性,应用电路以及65V/10A电压模式PWM降压稳压器评估板FAN65008B-GEVB主要特性和指标,电路图,材料清单和PCB设计图.

FAN65008B is a wide VIN highly efficient synchronous buckregulator, with integrated high side and low side power MOSFETs.The device incorporates a fixed frequency voltage mode PWMcontroller supporting a wide voltage range from 4.5 V to 65 V and can handle continuous currents up to 10 A.

FAN65008B includes a 0.67% accurate reference voltage to achievetight regulation. The switching frequency can be programmed from100 kHz to 1 MHz. To improve efficiency at light load condition, thedevice can be set to discontinuous conduction mode with pulse skipping operation.

FAN65008B has dual LDOs to minimize power loss and integratedcurrent sense circuit that provides cycle−by−cycle current limiting.

This single phase buck regulator offers complete protection featuresincluding Over current protection, Thermal shutdown, Under−voltagelockout, Over voltage protection, Under voltage protection andShort−circuit protection.

FAN65008B uses ON Semiconductor’s high performance PowerTrenchR MOSFETs that reduces ringing in switchingapplications. FAN65008B integrates the controller, driver, and powerMOSFETs into a thermally enhanced, compact 6 x 6 mm PQFNpackage. With an integrated approach, the complete DC/DC converter is optimized from the controller and driver to MOSFET switchingperformance, delivering a high power density solution.

FAN65008B主要特性:

• Wide Input Voltage Range: 4.5 V to 65 V
• Continuous Output Current: 10 A
• Fixed Frequency Voltage Mode PWM Control with Input VoltageFeed−forward
• 0.6 V Reference Voltage with 0.67% Accuracy
• Adjustable Switching Frequency: 100 kHz to 1 MHz
• Dual LDOs for Single Supply Operation and to ReducePower Loss
• Selectable CCM PWM Mode or PFM Mode for LightLoads
• External Compensation for Wide Operation Range
• Adjustable Soft−Start & Pre−Bias Startup
• Enable Function with Adjustable Input VoltageUnder−Voltage−Lock−Out (UVLO)
• Power Good Indicator
• Over Current Protection, Thermal Shutdown, OverVoltage Protection, Under Voltage Protection andShort−circuit Protection
• High Performance Low Profile 6 mm x 6 mm PQFNPackage
• This Device is Pb−Free and RoHS Compliant

FAN65008B应用:

• High Voltage POL Module
• Telecommunications: Base Station Power Supplies
• Networking: Computing, Battery ManagementSystems, USB−PD
• Industrial Equipment: Automation, Power Tools, SlotMachines

图1.FAN65008B框图

图2.FAN65008B应用电路

高性能65V/10A电压模式PWM降压稳压器评估板FAN65008B-GEVB

FAN65008B is a wide VIN highly efficient synchronous buckregulator, with integrated high side and low side power MOSFETs.The device incorporates a fixed frequency voltage mode PWMcontroller supporting a wide voltage range from 4.5 V to 65 V and can handle continuous currents up to 10 A.

FAN65008B includes a 0.67% accurate reference voltage to achievetight regulation. The switching frequency can be programmed from100 kHz to 1 MHz. To improve efficiency at light load condition, thedevice can be set to discontinuous conduction mode with pulse skipping operation.

FAN65008B has dual LDOs to minimize power loss and integratedcurrent sense circuit that provides cycle-by-cycle current limiting.

This single phase buck regulator offers complete protection featuresincluding Over current protection, Thermal shutdown, Under-voltagelockout, Over voltage protection, Under voltage protection andShort-circuit protection.

FAN65008B uses ON Semiconductor’s high performancePOWERTRENCHR MOSFETs that reduces ringing in switchingapplications. FAN65008B integrates the controller, driver, and powerMOSFETs into a thermally enhanced, compact 6 × 6 mm PQFNpackage. With an integrated approach, the complete DC/DC converteris optimized from the controller and driver to MOSFET switchingperformance, delivering a high power density solution.

评估板FAN65008B-GEVB性能指标:



图3.评估板FAN65008B-GEVB外型图

图4.评估板FAN65008B-GEVB电路图
评估板FAN65008B-GEVB材料清单:




图5.评估板FAN65008B-GEVB PCB设计图(1):左:顶层;右:底层

图6.评估板FAN65008B-GEVB PCB设计图(2):左:内层1;右:内层2
详情请见:
http://www.onsemi.cn/pub/Collateral/FAN65008B-D.PDF
http://www.onsemi.cn/pub/Collateral/EVBUM2526-D.PDF
FAN65008B-D.PDF
EVBUM2526-D.PDF

 

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