Eice DR IV ER ™ High voltage gate driver IC E valu atio n B oar d Application Note EV AL -2 E DL2 3N 06 PJ EV AL -2 E DL2 3N 06 PJ Applic atio n N ote Rev. 1.0 2014-04-11 Infin eon T echnol ogi es A G Edition 2014-04-11 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. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Revision History: 2014-04 Rev.1.0 Page or Item Subjects (major changes since last revision) 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™. Other Trademarks Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ of ARM Limited, UK. AUTOSAR™ is licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay™ is licensed by FlexRay Consortium. HYPERTERMINAL™ of Hilgraeve Incorporated. IEC™ of Commission Electrotechnique Internationale. IrDA™ of Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., OmniVision™ of OmniVision Technologies, Inc. Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of Sirius Satellite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™ of Symbian Software Limited. TAIYO YUDEN™ of Taiyo Yuden Co. TEAKLITE™ of CEVA, Inc. TEKTRONIX™ of Tektronix Inc. TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cadence Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited. Last Trademarks Update 2011-11-11 Application Note 3 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Table of Contents Table of Contents Table of Contents .................................................................................................................................................. 4 1 Introduction ....................................................................................................................................... 5 2 2.1 2.2 2.3 Design features ................................................................................................................................. 6 Main features ....................................................................................................................................... 6 Board specifications ............................................................................................................................ 7 Pin assignment .................................................................................................................................... 8 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 Electrical features ............................................................................................................................. 9 Supply voltages +5V and +15V ........................................................................................................... 9 Undervoltage lockout........................................................................................................................... 9 Short circuit detection .......................................................................................................................... 9 Current amplifier ................................................................................................................................ 10 Deadtime and interlock function ........................................................................................................ 11 COOLMOS™ turn - on / off ............................................................................................................... 11 Input PWM-Signals............................................................................................................................ 12 DC-Link capacitors ............................................................................................................................ 12 Connection of inductive load for non repetitive single pulse measurements .................................... 13 Example for resonant operation ........................................................................................................ 13 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.3 Board design details ....................................................................................................................... 15 Schematic .......................................................................................................................................... 15 Layout ................................................................................................................................................ 17 Layout top layer ............................................................................................................................ 17 Layout bottom layer...................................................................................................................... 17 Layout top place ........................................................................................................................... 18 Bill of material .................................................................................................................................... 19 Application Note 4 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Introduction 1 Introduction The gate driver evaluation board EVAL-2EDL23N06PJ was developed to show the functionalities and key features of the Infineon COOLMOS™ gate driver 2EDL23N06PJ in resonant zero voltage turn-on half-bridge applications. The board EVAL-2EDL23N06PJ is therefore not recommended by default for hard switched operation which leads to hard body diode commutation and hence excessive diode as well as COOLMOS™ losses. Such operation may result to damage of power switches and possibly other circuit components! 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-2EDL23N06PJ 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 Infineon´s warranty and liability. Application Note 5 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Design features 2 Design features 2.1 Main features Figure 1 Top view of the EVAL-2EDL23N06PJ The EVAL-2EDL23N06PJ contains a single Infineon 2EDL23N06PJ half-bridge gate driver and two Infineon COOLMOS™ switches. The evaluation board provides the following main features Short circuit protection by shunt measurement incl. status LED (/FAULT) and latch Current measurement with operational amplifier Undervoltage lockout Bootstrap functionality for high side switch by using an internal ultra-fast bootstrap diode Deadtime and interlock function integrated in the EiceDRIVER™. Connector for 15V supply, Reset, High voltage supply, external load Onboard voltage regulator for 5V supply Status LED for 15V supply, /FAULT state Split DC link capacitor Application Note 6 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Design features Status LED Ready and /FAULT IGBT half bridge gate driver with integrated bootstrap diode HV-supply input GND HV-supply input V+HV CoolMOS DC-link Shunt Reset and shut down 15V supply input with status LED Figure 2 Overview functionalities on top-side 2.2 Board specifications 5V voltage regulator Current amplifier External load All values are specified at an ambient temperature of TA = 25°C Table 1 Board specifications Parameter Description Typ. min max Unit VDD 15V voltage supply 15 10 17.5 V VDC High voltage supply 300 - 450 V IOut,pk Single pulse peak output current - - 20 A IOut,rms RMS output current - - 4 A fp Switching frequency 40 - 200 kHz Application Note 7 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Design features 2.3 Pin assignment Table 2 Pin assignment Connector name RESET +15V (VDD) X1 Pin no. Pin name Description Left terminal /RST same as X1-B1 Middle terminal GND same as X1-A16 Right terminal OFF same as X1-B2 Right terminal +15V positive 15V supply Left terminal GND A16 GND reference for 15V supply and input signals B1 /RST input – 0V to reset circuit B2 /FLT output over current; OC, 0..15V B7 IN_T non-inverting input high side COOLMOS™; 0V off; 5V on B8 IN_B non-inverting input low side COOLMOS™; 0V off; 5V on B16 +5V positive 5V supply generated from 15V *see Figure 22 for connector pin numbering GND reference for high voltage supply (internally connected to GND) V+HV positive high voltage supply Load Output HV half bridge connecting a test load Load1 Output DC link center point for connecting a test load for resonant zero-voltage turn-on operation Application Note 8 (related to GND_HV) for Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features 3 Electrical features 3.1 Supply voltages +5V and +15V The supply voltage for the driver output (+15V VDD) has to be supplied externally over the dedicated connector. The digital 5V supply voltage is generated internally by an Infineon voltage regulator. The evaluation board does not provide an overvoltage supply monitoring. The user has to ensure therefore that the voltages are in the correct range. The availability of the supply voltage +15V is visible over the green status LED. The high-side gate driver is supplied via the integrated ultra-fast bootstrap diode of the 2EDL23N06PJ. To ensure that the bootstrap capacitor is charged before the high side COOLMOS™ is switched on, the low side COOLMOS™ has to be switched on for a dedicated time of several milliseconds. 3.2 Undervoltage lockout The +15V supply VDD is monitored by the 2EDL23N06PJ. In case of an undervoltage the driver output is switched off. The thresholds for the low side as well as for the high side are typically VCCUV+ = 9.1 V (positive going) and VCCUV– = 8.3 V (negative going). The undervoltage lockout state of the input section is indicated by the /FAULT LED. 3.3 Short circuit detection The 2EDL23N06PJ provides integrated short circuit detection by measuring the voltage drop over a 20mΩ shunt. The shunt is connected as shown in Figure 3 (left). If the current reaches a value of typ. 22.5A a short circuit is detected, and the gate driver outputs are switched off. This status is reported by the /FAULT LED. The /FAULT event is latched by the flip-flop according to Figure 3 (right) and must be reset by activating the reset contactor. Figure 3 Shunt interface to Opamp and flip-flop latch circuit. Figure 4 shows the signals of the bottom side driver and COOLMOS™ switch during an overcurrent condition. The delay between over current event and output switch off is about 2.2 µs. The FAULT status is latched by an internal logic and must be reset by switching the RESET Signal to ground Application Note 9 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features Switch-off event CH1 VDS_bot 50V/div CH2 ID_bot 10A/div CH3 VLS_input 2V/div CH4 VShunt 200mV/div Overcurrent detected Time 1s/div Figure 4 Overcurrent detection signals (current measured by Rogowski coil) 3.4 Current amplifier The EVAL-2EDL23N06PJ provides an operational amplifier which amplifies the voltage drop over the shunt with a gain of 10. The amplified voltage is available for the user at connector X1 pins A9 and B9. The amplified voltage is calculated with V = Ishunt x Rshunt x 10. Due to inherent component tolerances, the amplifier output should be calibrated in case of using it for a critical current control. It should also be noted that the current amplifier output shows the current of the low side COOLMOS™ switch only. This fact should be considered in case if using the current amplifier output in the higher level control system. Example of load current waveforms and current amplifier output is shown in Figure 6. Figure 5 Current amplifier CH2 ILoad 1A/div CH3 VCurr_Amp_Out 200mV/div CH4 VDS_bot 50V/div Time 2s/div Figure 6 Current amplifier output with collector current (current measured by Rogowski coil) Application Note 10 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features 3.5 Deadtime and interlock function The IC provides a hardware fixed deadtime of typically 75ns. An additional interlock function prevents the two outputs from being activated simultaneously. If necessary, a higher deadtime can be generated by the input signals LIN and HIN when hardware deadtime does not block shoot-through. The hardware deadtime is a basic item to avoid deep shoot through. The general recommendation for dead time is to be approx. 1µs. COOLMOS™ turn - on / off 3.6 The switching characteristic of the COOLMOS™ is defined by the gate resistors RG1B, RG1T, RG2B and RG2T according to Figure 7. The resistor values are selected in order to avoid parasitic dv/dt-triggered turn-on. There is the possibility to adapt the switching characteristic to specific applications or to different COOLMOS™ devices by changing the values of RG1B and RG1T. The use of RG2B and RG2T together with DG1B and DG1T makes it possible to change the on-switching and off-switching slopes of the COOLMOS™ independent of each other. In case of using the diodes DG1B and DG1T, please make sure to select an appropriate Schottky diode with sufficient pulse current capability. Figure 7 EiceDRIVER™ 2EDL23N06PJ gate circuit Figure 8 and Figure 9 show typical switching transients for the high side and the low side COOLMOS™ devices. CH1 VGS_bot 5V/div CH2 ID_bot 1A/div CH3 VLS_input 2V/div CH4 – VDS_bot 50V/div CH1 VGS_bot 5V/div CH2 ID_bot 1A/div CH3 VLS_input 2V/div CH4 – VDS_bot 50V/div Time 200ns/div Time 200ns/div a) Figure 8 b) Switching transient of low side COOLMOS™; a) turn-off, b) turn-on; (current measured by Rogowski coil) Application Note 11 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features CH1 VGS_top 5V/div CH2 ID_top 1A/div CH3 VHS_input 2V/div CH4 – VDS_bot 50V/div CH1 VGS_top 5V/div CH2 ID_top 1A/div CH3 VHS_input 2V/div CH4 – VDS_bot 50V/div Time 200ns/div a) Time 200ns/div b) Figure 9 Switching transient of high side COOLMOS™; a) turn-off, b) turn-on; (current measured by Rogowski coil) 3.7 Input PWM-Signals There is the possibility to use low pass filters inside the PWM input signals to avoid an undesired turn-on of the COOLMOS™ by disturbances. This feature is not used in this evaluation board, but there is the possibility to test it by changing the resistors RIN1T, RIN1B and the capacitors CIN1T, CIN1B. Only the resistors RIN1T and RIN1B are assembled according to Figure 10. Figure 10 2EDL23N06PJ gate driver input 3.8 DC-Link capacitors Due to the available space, there is only a small DC-Link capacitors of 2 x 330nF in series available according to Figure 13. A bigger DC-Link capacitance has to be connected externally to the connectors V+HV and GND_HV to cancel wiring inductances between voltage source and test board. Application Note 12 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features 3.9 Connection of inductive load for non repetitive single pulse measurements The test board is designed for resonant operation of the half-bridge. The inductive resonant tank is to be connected as shown in Figure 11. LLoad Figure 11 Connection of inductive load A connection of the load to the screw terminal GND of X2/X4 and terminal LOAD of X4 is possible as well. Such connection can be used for single pulse measurements. However please note, there is a risk of hard body diode commutation when using the load connection between GND and LOAD (valid for load connection between V+HV and Load as well)! This may damage the MOSFET transistors. The board is not designed to support multi pulse operation in this configuration! 3.10 Example for resonant operation The board is designed to support resonant operation under zero voltage switching turn-on conditions (ZVS). A load which is connected according to Figure 11 will result in a symmetric triangular load current shape as shown in Figure 12. The load circuit only draws reactive power and does not draw any real power. However, the half bridge switches must process the reactive power being drawn and therefore one can investigate the behavior of the 2EDL23N60PJ EiceDRIVER™ IC including the effects of the power transistors. Table 3 lists various circuit parameters proposed for operation of the resonant circuit. The resulting waveforms using these parameters are shown in Figure 12. Table 3 Proposal of operating conditions Parameter Component Value switching frequency fP – 100 kHz duty cycle d – 49% dead time DT – 500 ns Resonant load inductor LLoad 800 µH Resonant load capacitor CBulk1, CBulk1 330 nF DC bus voltage VDC – 320 V peak inductor current Ipk – 1A Application Note 13 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Electrical features The relation between various design parameters is described by Eqn. (1) where Ipk is the target peak current during operation, fP is the switching frequency, LLoad is the load inductance and VDC is the applied DC bus voltage. I pk VDC 1 320 V 1 0.5 A LLoad 8 f P 800 µH 8 100 kHz (1) Please note, that the inductance saturation must be absolutely avoided. The saturation can lead to extremely high circuit currents, which may overload and consequently damage the power transistors. The use of air coils without any magnetic core is therefore recommended. Eqn. (1) can be also used in order to calculate the needed load inductance in case that the switching frequency fP and the target peak current Ipk are known. In this case Eqn. (1) changes to: LLoad VDC 1 I pk 8 f P (2) The load current is symmetric around 0 axis without any DC component. CH1 – VGS_top 5V/div CH2 ILoad 500mA/div CH3 VGS_bot 5V/div CH4 VDS_bot 50V/div Time 2s/div Figure 12 Load current shape in operation with load connected as shown in Figure 11 Application Note 14 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Board design details 4 Board design details 4.1 Schematic Figure 13 HV supply input (left) and DC-Link connection (right) Figure 14 LV Supply and Reset Input and connector X4 Figure 15 Connector X1 Figure 16 +5V linear regulator Application Note 15 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Board design details Figure 17 Infineon driver 2EDL23N06PJ with shunt measurement Figure 18 Current amplifier Figure 19 LEDs, FAULT and over current logic Application Note 16 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Board design details 4.2 Layout 4.2.1 Layout top layer Figure 20 Layout top of the EVAL-2EDL23N06PJ 4.2.2 Layout bottom layer Figure 21 Layout bottom of the EVAL-2EDL23N06PJ Application Note 17 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Board design details 4.2.3 Layout top place Figure 22 Top place view of the EVAL-2EDL23N06PJ Application Note 18 Rev. 1.0, 2014-04-11 EiceDRIVER™ Driver IC Evaluation Board EVAL-2EDL23N06PJ Application Note Board design details 4.3 Bill of material Part Value Package C_BULK,C_BULK1 330nF, 450V C-EU150-064X183 C1 4u7F/25V C-EUC1206K C10, C14 100pF C-0603 C12 100nF C-0603 C2 EEEFK1C101P 100µF/16V SMD-C6.3x7.7 C2T 4µ7F/25V C-1206 C3 1uF/10V C-0805 C4, C11 100nF/10V C-0603 C5, C6, C8, C13 nicht bestückt C-EUC1206K C7 4u7F/25V C-1206 C9 4u7F/10V C-1206 IC2 LMV721M5 IC-OP-TSV991AILT IC5 IC-REG-TLE4264G SOT223 R1, R2 4k7 R-0603 R3, R17, R18, RIN1B, RIN1T 1k R-0603 R4, R5, R6, R7, R8, R9, R12 47k R-0603 READY LED_GE LEDCHIPLED_0805 RG1B, RG1T 47R R-EU_R1206 RL1 820R R-0805 RL3, RL4 22k R-0805 RL5, RL6 10k R-0805 RS 0R02/1W SMT-REF T4, T5, T6, T7 T-NPN-BC848A T-NPN-BC848A U$3 2EDL23N06PJ 2EDL_SO14-2_3A U$8, U$17 IPL60R199CP COOLMOS_THINKPAK X1 FAB32Q2 FAB32Q2 X2 MKDSN1,5/2-5,08 MKDSN1,5/2-5,08 X3 22-23-2031 22-23-2031 X4 MKDSN1,5/3-5,08 MKDSN1,5/3-5,08 Application Note 19 Rev. 1.0, 2014-04-11 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG