Demo Board

www.DataSheet4U.com Datasheet rev 2.1 IRMD22141SS IRMD22141SS Demo Board For 3-phase / 380V motor drives • • • • • • • • • • • • • • IRMD22141SS Demo Board Up to 1200V DC-bus capability Up to 50A maximum phase current Optional on-board phase shunt resistors 3 x IR22141SS devices connected in 3phase configuration On-board bootstrap supply for high-side gate drive Full protection of phase-to-phase, DC-bus and ground short circuit by monitoring IGBT de-saturation Fault feedback to ground level Internal minimum dead time Anti-shoot-through management Undervoltage lockout 3.3V digital input/output CMOS compatible Power Module Standard ECONO2-6PACK IGBT module compatible IGBT short circuit rated up to 1200V/50A. Easy to mount heat-sink IR22141SS Demo Board (Shown with optional IGBT Power Module) The IRMD22141SS demo board is an evaluation board for IR22141SS gate driver. With three connected IR22141SS (see the device datasheet), IRMD22141SS is designed to drive 3-phase power modules with pin-out compatible to ECONO2-6PACK. The board can drive AC or Brushless motors using power modules with up to 50A output current. The board is a flexible solution for different applications and can be customized providing place for external components. The control signals are 3.3V CMOS compatible; threephase shunt resistor (with sensing pins) can be placed for current loop control; power module short circuits are managed synchronizing the IGBT turn off in a local network. Board layout reduces the noise coupling between high and low voltage signals and EM emissions. IRMD2214SS + Power Module INTRODUCTION Application Block Diagram (Refer to connections section to know the interface pins) This diagram shows the main blocks and connections of the demo board and the external components necessary in a typical motor drive application. DCbus AC/DC Conveter Low Voltage Power Supply IR22141SS 3-phase half bridge (Power Module) shunt resistor shunt resistor shunt resistor IR22141SS Motor System Control IR22141SS 3-phase Current Sensor www.irf.com page 1/22 Sep 9 , 2004 th Datasheet rev 2.1 IRMD22141SS Table of contents INTRODUCTION .........................................................................................................................................1 Table of contents......................................................................................................................................2 Table of figures ........................................................................................................................................2 The IR22141SS........................................................................................................................................3 The power module ...................................................................................................................................3 Important Notice.......................................................................................................................................3 BOARD CONNECTORS .............................................................................................................................4 Connection with the system controller .....................................................................................................4 FAULT/SD logic signal .............................................................................................................................5 VCC supply pin ........................................................................................................................................5 VSS ground pin (GND).............................................................................................................................5 Connecting the current sensors ...............................................................................................................5 High power signal connector....................................................................................................................6 Connecting the power module .................................................................................................................6 Test Points ...............................................................................................................................................7 TEST BENCH CONNECTION ....................................................................................................................7 OPERATING DESCRIPTION......................................................................................................................8 Power on sequence .................................................................................................................................8 Normal operating mode............................................................................................................................8 Fault management ...................................................................................................................................8 Multilevel board solution...........................................................................................................................9 BOARD SOLUTIONS................................................................................................................................10 Bootstrap circuit .....................................................................................................................................10 Gate resistances ....................................................................................................................................10 OTHER EXTRA COMPONENTS ..............................................................................................................11 Desat circuit ...........................................................................................................................................11 Clamping Diode for Vs below ground ....................................................................................................11 RC filter on com pin................................................................................................................................12 Fast diode between gate and supply pin ...............................................................................................13 Zener diode to preserve the IGBT gate .................................................................................................13 Optional output shunt resistor ................................................................................................................14 Resistor on vcc ........................................................................................................................................14 BILL OF MATERIAL .................................................................................................................................15 SCHEMATIC .............................................................................................................................................16 LAYOUT ....................................................................................................................................................16 LAYOUT ....................................................................................................................................................17 Table of figures Figure 1: TOP image of board .....................................................................................................................4 Figure 2: LED connection ............................................................................................................................5 Figure 3: Test bench connection .................................................................................................................7 Figure 4: Power on sequence......................................................................................................................8 Figure 5: Three phase connection...............................................................................................................9 Figure 6: Example of a desaturation detection event ..................................................................................9 Figure 7: Bootstrap circuit..........................................................................................................................10 Figure 8: Desat external filter ....................................................................................................................11 Figure 9: -Vs clamp ....................................................................................................................................12 Figure 10: COM below ground protection..................................................................................................12 Figure 11: Collector-Gate current protection .............................................................................................13 Figure 12: Zener clamp for IGBT gate.......................................................................................................13 www.irf.com page 2/22 Sep 9 , 2004 th Datasheet rev 2.1 IRMD22141SS Parameters Values Description, condition DCBus voltage positive with 1200V power module DCbus voltage negative Low voltage power supply. Follow IR22141 datasheet for supply setting Low voltage ground quiescent Vcc current max phase dc output current see “Board Connectors” section on page 4 Input Power DC+ DCVcc Vss Icc Output Power Ilmax Control Inputs/Outputs 40 pin connector J1 I/Os 3.3V to 15V compatible 50A @25C 0 to 1200V ground 15V typ ground 100 mA The IR22141SS is a half bridge gate driver suited for power switching applications. The high side driver can float up to 1200V. The IR22141SS have a high gate driving capa