Eice DR IV ER ™ High voltage gate driver IC E valu atio n B oar d Application Note EV AL -6 E DL0 4I0 6P T Applic atio n N ote Revision 2.0, 2014-04-14 Infin eon T echnol ogi es A G Edition 2014-04-14 Published by Infineon Technologies AG 81726 Munich, Germany © 2014 Infineon Technologies AG All Rights Reserved. LEGAL DISCLAIMER THE INFORMATION GIVEN IN THIS APPLICATION NOTE IS GIVEN AS A HINT FOR THE IMPLEMENTATION OF THE INFINEON TECHNOLOGIES COMPONENT ONLY AND SHALL NOT BE REGARDED AS ANY DESCRIPTION OR WARRANTY OF A CERTAIN FUNCTIONALITY, CONDITION OR QUALITY OF THE INFINEON TECHNOLOGIES COMPONENT. THE RECIPIENT OF THIS APPLICATION NOTE MUST VERIFY ANY FUNCTION DESCRIBED HEREIN IN THE REAL APPLICATION. INFINEON TECHNOLOGIES HEREBY DISCLAIMS ANY AND ALL WARRANTIES AND LIABILITIES OF ANY KIND (INCLUDING WITHOUT LIMITATION WARRANTIES OF NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OF ANY THIRD PARTY) WITH RESPECT TO ANY AND ALL INFORMATION GIVEN IN THIS APPLICATION NOTE. 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Infineon Technologies components may be used in life-support devices or systems only with the EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Revision History: 2014-04 Rev.2.0 Page or Item Subjects (major changes since last revision) Previous Version: 1.0 all editorial changes, format update, waveform update Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, EconoPACK™, CoolMOS™, CoolSET™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EconoPACK™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, I²RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimePACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatRIC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SOLID FLASH™, TEMPFET™, thinQ!™, TRENCHSTOP™, TriCore™. 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Last Trademarks Update 2011-11-11 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Table of Contents Table of Contents 1 Introduction ........................................................................................................................ 5 2 Design feature .................................................................................................................... 6 2.1 Main features...................................................................................................................... 6 2.2 Board specifications ........................................................................................................... 7 2.3 Pin assignment ................................................................................................................... 8 3 Electrical features ............................................................................................................... 9 3.1 Supply voltage +15V .......................................................................................................... 9 3.2 Under voltage lockout ......................................................................................................... 9 3.3 Over-current detection ........................................................................................................ 9 3.4 IGBT turn - on / off ............................................................................................................ 10 3.5 DC-Link capacitor ............................................................................................................. 12 3.6 Input Signals..................................................................................................................... 12 4 Board design details ......................................................................................................... 13 4.1 Schematic ........................................................................................................................ 13 4.2 Layout .............................................................................................................................. 15 4.2.1 Layout top ........................................................................................................................ 15 4.2.2 Layout bottom................................................................................................................... 15 4.2.3 Top place ......................................................................................................................... 16 4.3 Bill of material ................................................................................................................... 17 Application Note 4 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Introduction 1 Introduction The gate driver evaluation board EVAL-6EDL04I06PT was developed to show the functionalities and key features of the Infineon IGBT gate driver 6EDL04I06PT. The board is available from Infineon in sampling quantities. The properties of this part are described in the datasheet chapter of this document, whereas the remaining paragraphs provide information intended to enable the customer to copy, modify and qualify the design for production, according to their own specific requirements. The design of the EVAL-6EDL04I06PT was performed with respect to the environmental conditions described in this document. The design was tested as described in this document, but not qualified regarding manufacturing, lifetime or over the full ambient operating conditions. The boards provided by Infineon are subjected to functional testing only. Due to their purpose Evaluation Boards are not subjected to the same procedures regarding Returned Material Analysis (RMA), Process Change Notification (PCN) and Product Discontinuation (PD) as regular products. These Evaluation Boards are used for development support only and should not be used as reference design for volume production. See Legal Disclaimer and Warnings for further restrictions on Infineons warranty and liability. Application Note 5 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Design feature 2 Design feature 2.1 Main features Figure 1 Top view of the EVAL-6EDL04I06PT The EVAL-6EDL04I06PT contains an Infineon IGBT full bridge gate driver 6EDL04I06PT in PG-DSO-28 package and six Infineon IGBTs IKD04N60R The evaluation board provides the following main features Over-current detection with shunt voltage measurement, latch and reset functionality Under voltage lock out Bootstrap functionality for high side IGBTs Use of the Internal ultra fast bootstrap diodes of the 6EDL04I06PT 15V supply, Reset, High voltage supply, external load Status LED for 15V supply, ready, fault and overcurrent status DC link capacitor Application Note 6 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Design feature Status LED Fault / Overcurrent / Ready IGBT full bridge gate driver 15V supply input, Reset with status LED Figure 2 2.2 IGBT s External load Shunt DClink HV supply input Overview functionalities on top-side Board specifications All values are specified at an ambient temperature of 25°C. Table 1 Board specifications Parameter Description Typ. Min. Max. Unit VDD 15V voltage supply 15 13.2 17.5 V VDC High voltage supply 320 450 V IOut,pk Single pulse peak output current - - 4 A IOut,rms RMS output current - - 1 A fp Switching frequency 16 - 50 kHz * Please make sure that the maximum rated values never get exceeded. Also the performance and quality can not be guaranteed when using the board with all parameters in maximum rated value at the same time. Application Note 7 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Design feature 2.3 Table 2 Pin assignment Pin assignment Connector name RESET +15V (VDD) X1 Pin no. Pin name Description Left terminal /RST Right terminal GND Right terminal +15V Left terminal GND B1 EN input – 0V to disable circuit, integrated pull up B2 /FLT open drain output with pull up to 15V B3 HIN3 non-inverting input T3T IGBT; 0V off, 5V on B4 LIN3 non-inverting input T3B IGBT; 0V off, 5V on B5 HIN2 non-inverting input T2T IGBT; 0V off, 5V on B6 LIN2 non-inverting input T2B IGBT; 0V off, 5V on B7 HIN1 non-inverting input T1T IGBT; 0V off, 5V on B8 LIN1 non-inverting input T1B IGBT; 0V off, 5V on positive 15V supply Please reference all input signals to the GND of the 15V supply *see Figure 16 for connector pin numbering reference for high voltage supply (Power-GND, internally connected to GND) positive high voltage supply (up to 400V related to GND_HV) GND_HV V+HV OUT Application Note Output HV 3phase bridge (related to GND_HV) 8 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Electrical features 3 Electrical features 3.1 Supply voltage +15V The supply voltage for the digital part and for the driver output (+15V VCC) has to be supplied externally over the dedicated connector. The evaluation board does not provide an over voltage supply monitoring, therefore the user has to ensure that the voltages are in the correct range. Voltages above the maximum values may damage the IGBT driver. The availability of the supply voltages is visible over the green status LEDs. The high-Side gate driver outputs are supplied over internal bootstrap diodes and the bootstrap capacitors CBOOT1,2,3. To ensure that the bootstrap capacitor is charged before the high side IGBT is switched on, the low side IGBT has to be switched on for a dedicated time. 3.2 Under voltage lockout The +15V supply VCC is monitored by the 6EDL04I06PT. In case of an undervoltage the driver output is switched off. The thresholds are typically VCCUV+ = 11.7 V (positive going) and VCCUV– = 9.8 V (negative going). This status is visible over the red FAULT LED. If the FAULT LED is on and the OC LED is off, an undervoltage is detected. 3.3 Over-current detection The 6EDL04I06PT provides an over-current detection function by connecting the ITRIP input with the load feedback current. In case of the EVAL-6EDL04I06PT, this is done by using a resistive shunt for current measurements The shunt voltage is connected to the ITRIP comparator. The ITRIP comparator detects the over-current if the voltage exceeds the threshold of typically 0.44V. With the shunt resistor value of 20mOhm as used in EVAL-6EDL04I06PT, the ITRIP comparator is triggered at a current of approximatelly 22A. An over-current event generates a hard shut down of all gate driver outputs and provides a latched fault feedback at /FAULT pin. In the same time, the RC network (only C used in case of EVAL-6EDL04I06PT) connected at pin RCIN is discharged. The fault is latched by the gate driver internally till the capacitor at RCIN is re-charged and the voltage level reaches a value of typically 5.2V. In case of the EVAL-6EDL04I06PT, logic circuit implemented on the board keeps the capacitor at RCIN discharged till a LOW pulse at the RESET pin occurs. This must be done by pulling the RESET signal low manually or by an external circuit. An over-current event is indicated by the LED “OC” and LED “FAULT” lighting up together. At power up, the implemetned logic circuit may be in an undefined state. If only the LED “OC” is lit after a power up, it is recommend to reset the logic with a LOW pulse at RESET signal. The overcurrent detection is designed for HV supply voltages of 320V and above. The shunt resistor value may be adjusted, when operating the board with less than 320V in order to guarantee a proper detection of short circuit events. Relevant waveforms in case of a simulated short circuit are shown in Figure 3-1. Notice that there is approximately 1.5 s delay between the overcurrent detection and the gate shut down. During this time interval, the current continues to rise as shown in the figure and therefore this delay must be considere to assure a safe use of the EVAL-6EDL04I06PT board. Application Note 9 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Electrical features ITRIP ~0.44V IGBT gate is switched off CH1 VGE_bot 5V/div CH2 VITRIP 100mV/div CH3 IC_bot 5A/div CH4 VRCIN 2V/div Time 1s/div RCIN goes low Figure 3 3.4 Over-current detection signals during a simulated short circuit IGBT turn - on / off The switching characteristic of the IGBTs is defined by the gate resistors RGxONT, RGxONB, RGxOFFT, RGxOFFB and the diodes DGxT and DGxB. Where “x” means 1,2,3 for the three output stages. Figure 4 Gate driver output of the 6EDL04I06PT. Exemplarily only 1 phase output pictured The gate resistors are adapted to the max. gate driver output current of the 6EDL04I06PT for turn-on and turnoff. There is the possibility to adapt the switching characteristic to specific applications or to different IGBTs by replacing the resistor values. The use of RGxOFFT and RGxOFFB together with DGxT and DGxB makes it possible to change the on-switching and the off-switching slopes of the IGBT independent to each other. To avoid a shoot through between top- and bottom IGBT, the operator needs to ensure a sufficient dead time. With this setup the deadtime should be > 1µs. Application Note 10 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Electrical features Switching sequence with 2 pulses and the following parameters: Supply Input: 150V Duty cycle = 20% referred to the bottom IGBT CH1 VGE_bot 5V/div CH2 VCE_bot 20V/div CH3 IC_bot 2A/div CH4 VGE_top 5V/div Time 40s/div Figure 5 Switching sequence with 1µs dead time CH1 VGE_bot 5V/div CH2 VCE_bot 20V/div CH3 IC_bot 2A/div CH4 VGE_top 5V/div Time 400ns/div Figure 6 Turning off top IGBT with 1µs dead time CH1 VGE_bot 5V/div CH2 VCE_bot 50V/div CH3 IC_bot 5A/div CH4 VGE_top 5V/div Time 400ns/div Figure 7 Turning on top IGBT with 1µs dead time Application Note 11 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Electrical features 3.5 DC-Link capacitor Due to the available space there is only a small DC-Link capacitor of 220nF available. If a bigger DC-Link capacity is necessary it has to be connected externally to the connectors V+HV and GND_HV. 3.6 Figure 8 Input Signals Gate driver inputs There is the possibility to use low pass filters inside the PWM input signals LIN1,2,3 and HIN1,2,3 to avoid an undesired switch on an IGBT by disturbances. This feature is not used in this evaluation board, but there is the possibility to test it by changing the resistors RIN1,2,3,4,5,6 and the capacitors CIN1,2,3,4,5,6. Application Note 12 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Board design details 4 Board design details 4.1 Schematic Figure 9 HV supply input, DC-Link and load connector Figure 10 LV Supply and Reset Input Figure 11 Connector X1 Application Note 13 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Board design details Figure 12 Infineon driver 6EDL04I06PT outputs Figure 13 LEDs, FAULT and READY logic Application Note 14 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Board design details 4.2 Layout 4.2.1 Layout top Figure 14 4.2.2 Figure 15 Layout top of the EVAL-6EDL04I06PT Layout bottom Layout bottom of the EVAL-6EDL04I06PT Application Note 15 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note Board design details 4.2.3 Figure 16 Top place Top place view of the EVAL-6EDL04I06PT Application Note 16 Revision 2.0, 2014-04-14 EiceDRIVER™ Driver IC Evaluation Board EVAL-6EDL04I06PT Application Note 4.3 Bill of material Part Value Package C1 1µF/25V SMD0805 C2, C3 1nF/16V SMD0603 CBOOT1, CBOOT2, CBOOT3 2µ2F/25V SMD0805 C_BULK B32653A0224 220nF/1000V C22.5B10 D1 D-ZENER-BZX384-B5V1 SOD323 DG1B, DG1T, DG2B, DG2T, DG3B, DG3T PMEG6010CEJ SOD323F R1, R2, R4, R6, R8 47k SMD0603 R3 1k SMD0603 RG1OFFB, RG1OFFT, RG2OFFB RG2OFFT, RG3OFFB, RG3OFFT 18R SMD0603 180R SMD0603 RG1ONB, RG1ONT, RG2ONB RG2ONT, RG3ONB, RG3ONT RIN1, RIN2, RIN3, RIN4, RIN5, RIN6 0R SMD0603 RL1, RL2 820R SMD0805 RL3, RL4 22k SMD0805 RL5, RL6 10k SMD0805 RP1, RP3 10k SMD0603 RP2 3k3 SMD0603 RS 0R020/5W SMT-REF 6EDL04I06PT IC-DRV-6EDL04I06PT PG-DSO-28 T1, T5, T6, T7 T-NPN-BC848A SOT23 T1B, T1T, T2B, T2T, T3B, T3T T-IGBT-IKD04N60R TO-252_DPAK T4 BCR192 SOT23 X1 FAB32Q2 FAB32Q2 +15V, RESET 22-23-2021 22-23-2021 GND_HV MKDSN1,5/2-5,08 MKDSN1,5/2-5,08 OUT GMSTBV3 GMSTBV3 FAULT, OC LED_RT CHIPLED_0805 15V LED_GN CHIPLED_0805 READY LED_GE CHIPLED_0805 Application Note 17 Revision 2.0, 2014-04-14 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG