原标题：ST TN5050H-12WY汽车级50A 1200V可控硅解决方案

　　ST公司的TN5050H-12WY是汽车级50A 1200V可控硅(SCR)器件,采用大功率TO-247封装,耐压1200V,导通电流50A rms,具有高的静态和动态转换:dI/dt = 200 A/μs;dV/dt = 1000 V/μs,主要用在汽车充电,可再生能源,不间断电源(UPS),固态继电器,焊接设备和马达驱动等.本文介绍了TN5050H-12WY主要特性,评估板STEVAL-ISF003V1主要特性,功能框图,电路图,材料清单和PCB元件布局图.

　　Available in TO-247 high power package, theTN5050H-12WY autograde is suitable in applications such as automotive / stationarybattery charger, renewable energy generator, interruptible power supply, solid state relay,welding equipment and motor drive applications.

　　Its power switching, voltage robustness andpower dissipation performances are the key features for functions such as a 80 A AC switch,an AC phasing　inverter and an AC-DC controlledrectifier bridge.

　　The TN5050H-12WY is an automotive gradeproduct and offers a superior performance in surge current handling, thermal coolingcapabilities and overvoltage robustness

　　TN5050H-12WY主要特性:

　　• On-state current: 50 Arms

　　• Blocking voltage: 1200 V

　　• High static and dynamic commutation:

　　– dI/dt = 200 A/μs

　　– dV/dt = 1000 V/μs

　　• AEC-Q101

　　• IGT = 50 mA

　　• ECOPACK®2 compliant component

　　TN5050H-12WY应用:

　　• Automotive:

　　– on board, off board battery charger

　　• Solar, wind renewable energy inverters

　　• Solid state relay

　　• UPS:

　　– Bypass

　　– ICL (inrush current limiter)

　　– Battery charger

　　• Industrial welding systems

　　• Voltage control rectifier

　　TN5050H-12WY评估板STEVAL-ISF003V1

　　The STEVAL-ISF003V1 evaluation board allows limitation of the inrush current charging a DC bus capacitor, to comply with standard IEC 61000-3-3. This inrush current limitation is based on a soft-start procedure of the mixed bridge diodes and SCRs rectifier using progressive phase control at board start-up.

　　This solution drastically reduces standby losses as the DC bus can be totally disconnected from the AC mains when it does not have to operate. DC bus deactivation is simply achieved by turning off SCRs, without requiring an additional relay to open the circuit in standby.

　　The steady-state losses are also reduced, thanks to the removal of the NTC / PTC resistor traditionally used to limit the inrush current, which in turn removes the need for a relay to bypass it.

　　评估板STEVAL-ISF003V1主要特性:

　　Fully electronic solution without the need for an inrush current limiter resistor and its bulky bypass electromechanical relay

　　DC bus disconnection at standby to reduce losses below 0.3 W

　　Inrush current compliance with IEC61000-3-3

　　Operation allowed with PFC (continuous or discontinuous)

　　Compliant with EN 55015, IEC 61000-4-11

　　Criteria A at 4 kV IEC 61000-4-5 and at 4 kV IEC 61000-4-4

　　RoHS compliant

　　Target applications include all those using a diode-bridge to rectify the AC line voltage, where NTC or PTC resistor removal and loss reduction in standby are desirable, such as:

　　 EV chargers.

　　 Telecom power supplies

　　图1.评估板STEVAL-ISF003V1外形图

　　评估板STEVAL-ISF003V1材料清单: