Datasheet, V3.1 , March 2009 EiceDRIVER TM 2 E D 3 0 0 C 1 7 -S 2 E D 3 0 0 C 1 7 -S T Dual IGBT Driver Board For Infineon Medium and High Power IGBT Modules Power Management & Drives Edition2009-03-10 Published by Infineon Technologies AG 59568 Warstein, Germany © Infineon Technologies AG 2009. All Rights Reserved. LEGAL DISCLAIMER THE INFORMATION GIVEN IN THIS APPLICATION NOTE IS GIVEN AS A HINT FOR THE IMPLEMENTATION OF THE INFINEON TE CHNOLOGIES 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 your 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 your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems 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 TM EiceDRIVER(TM) 2ED300C17-S/ -ST Safety notice! The driver may only be used for the purposes described by the manufacturer. Inadmissible alterations and use of spare parts or accessories not recommend by Infineon may cause fire, electric shock and injuries. This document has to be available to all users, developers and qualified personnel who are to work with the driver. If measurements and tests on the device have to be carried out during operation, then the regulations of the work on live parts are to be observed, suitable test equipment is to be used. Prior to installation and commissioning please read this document thoroughly. • Commissioning is prohibited if there is visible damage by inappropriate handling or transportation. • Ensure ESD protection during handling. • Connect or disconnect only with power turned off. • Always keep sufficient safety distance during commissioning without closed protective housing. • Contact under live condition is strictly prohibited. • Work after turn-off is impermissible until the absence of supply voltage has been verified. • During work after turn-off it has to be observed that components heat up during operation. Contact with these can cause burns. • The drivers are mounted electrically and mechanically on a PCB by soldering. The mechanical strength has to be verified by the user and, if necessary, assured with appropriate tests. • The drivers are designed for use with Infineon IGBT Modules type IHM, EconoPACK+, PrimePACK TM, 62mm. In case of ulterior use, safe operation cannot be ensured. Data sheet 3 V3.1, 2009-03-10 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST General Information 2ED300C17-S/ -ST: This datasheet describes the dual channel IGBT driver 2ED300C17-S for industrial applications and the 2ED300C17-ST for traction applications. The electrical function and the mechanical dimensions of both versions are similar. The 2ED300C17-ST will be only be referred to where necessary. TM The 2ED300C17-S is one of the EiceDRIVER driver family. (eupec IGBT controlled efficiency DRIVER). The 2ED300C17-S IGBT driver is designed for use with Infineon IGBT modules of the 1200V and 1700V series. Functions of the 2ED300C17-S such as “soft shut down” or VCEsat reference curves have to be adapted to the individual modules. This is described in the following chapters. The 2ED300C17-S is designed for applications with high safety and reliability requirements and aims for power ratings of 75kW to 1MW. To offer high interference suppression, +15V is generally used for control. The entire logic processing is also done with +15V. The integrated transformer is separated into three sections: Two pulse transformers and a dual channel DC-DC switch mode power supply. These are designed such that they offer lowest coupling capacitances and high isolation stability. The 2ED300C17-S is additionally equipped with a feedback ”Sense” input. This input can optionally be connected with the active clamping or di/dt and dv/dt control. The clearance and creepage distances comply with VDE0110 and VDE0160 / EN50178 and are designed for pollution degree 3. Materials of the transformer meet requirements of UL94V2. Degree of protection is IP00. To protect from undefined switching of IGBTs in case of a gate-emitter short circuit of IGBT, the supply voltage VA;B+; VA;B- is internally fused. In case of a gate-emitter short the secondary circuit is interrupted and thus the primary voltage maintained. Exclusion clause: The datasheet is part of the Infineon IGBT driver 2ED300C17-S. To ensure safe and reliable operation it is necessary to read and understand this datasheet. The Infineon IGBT driver 2ED300C17-S is only intended for control of Infineon IGBT modules. Infineon cannot warrant against damage and/or malfunction if IGBT modules used not produced by Infineon. In this context, Infineon retains the right to change technical data and product specifications without prior notice to the course of improvement. The 2E300C17-S has been designed for an ambient temperature range starting at -25°C whereas the 2ED300C17-ST temperature range starts at -40°C. Data sheet 4 V3.1, 2009-03-10 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST AP99007 Revision History: 2008-04 Previous Version: V3.0 V3.1 Page Subjects (major changes since last revision) all General review Data sheet 5 V3.1, 2009-03-10 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Table of Contents Page 1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 Datasheet.............................................................................................................................7 Features ...............................................................................................................................7 Key Data...............................................................................................................................7 Block Diagram .......................................................................................................................8 Inputs and Outputs 2ED300C17-S / -ST..................................................................................8 Pin Configuration of the 2ED300C17-S /- ST ...........................................................................9 Absolute Maximum Ratings .................................................................................................. 10 Recommended Operating Parameters .................................................................................. 11 Electrical Characteristics ...................................................................................................... 12 Insulation Characteristics ..................................................................................................... 12 Mechanical Dimensions ....................................................................................................... 13 Processing .......................................................................................................................... 14 2 2.1 The transformer................................................................................................................. 14 Reinforced isolation Protection Class II according to EN50178 ............................................... 14 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 Application of the 2ED300C17-S / -ST ................................................................................ 15 Power supply....................................................................................................................... 15 Mode selection .................................................................................................................... 16 Interlock delay times ............................................................................................................ 17 Logic level ........................................................................................................................... 18 Signal level.......................................................................................................................... 19 IGBT connection .................................................................................................................. 20 IGBT short circuit and over-current shut-down with SSD “Soft Shut Down“ .............................. 22 SSD “Soft Shut Down“ ......................................................................................................... 25 External fault input ............................................................................................................... 27 “Sense“ input (SSD “Soft Shut Down“, optional DVRC or active clamping) ............................... 28 Additional output voltage / buffer capacitors ........................................................................... 29 Application example 2ED300C17-S ...................................................................................... 30 4 4.1 4.2 General .............................................................................................................................. 31 Designations and symbols.................................................................................................... 31 Type designation ................................................................................................................. 32 Datasheet 6 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1 Datasheet 1.2 Features • Dual channel IGBT driver • For 600V, 1200V and 1700V Infineon IGBT modules • VCEsat monitoring • Soft Shut Down for fault conditions • Reinforced isolation according to EN50178 • Integrated DC-DC SMPS • High peak output current • ±15 V secondary drive voltage • Short propagation delay time • Optional “Sense”-function • High RFI immunity 1.3 Key Data Isolation test voltage Visol pulse transformer and DC/DC 5000 VAC Max. output current: IG per channel ± 30 A Max. output power PDC/DC per driver channel 4 W Propagation delay time tpd(on); tpd(off) <670 ns Minimal pulse suppression tmd turn on and turn off 400 ns PWM drive voltage Vin drive level for channel A and B +15 V Supply voltage Operating voltage VDC to ground +15 VDC dv/dt stability dv/dt (*during test) 50* kV/µs Operating temperature Top 2ED300C17-S -25 bis 85 °C Top 2ED300C17-ST -40 bis 85 °C According to EN50178 protection class II Direct on driver surface Operating temperature Direct on driver surface Datasheet 7 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.4 Block Diagram EDFA Fault Detection VCE sat E. A V CE sat A Gate A Dead time IN A Pulse Stage CA Pulse Former SoftShut Down Undervoltage Pulse Memory COM A V A+ V ASense Sense A Dead time IN B DOCD CB RC A Fault Detection Logic EDFA MODE Fault Detection VCE sat E. B V CE sat B Gate B Pulse Stage RESET FaultMemory FAULT SoftShut Down Undervoltage Pulse Memory GND COM B V B+ V BSense DC/DC Converter Control V DC 1.5 Pulse Former DOCD Sense B RC B Inputs and Outputs 2ED300C17-S / -ST IN A; IN B PWM signal inputs for channel A and channel B CA; CB Inputs for external interlock delay time generation for channel A and B in half-bridge mode Mode Input for operating mode selection. Direct mode GND; half-bridge mode: +15V Reset With reset and operating PWM signals the primary fault memory is reset. Reset has active high logic. A high signal activates the reset. Fault A LOW signal on the fault output indicates a fault. The fault output is open-collector. VDC Supply for the DC-DC SMPS VDD Electronic supply GND GND is ground and reference point for all primary signals and supply voltage E.A; E.B External fault input is used to set the fault memory by an external signal. VCE sat A; B Input for the saturation voltage monitoring Gate A; B Driver output to the IGBT module gate via an external gate resistor COM A; B COM A; B is connected to the auxiliary emitters of the IGBT module VA+ ; V A- ; VB+; VB- Supply voltage referenced to COM A; B for additional use and connection of the buffer capacitors Sense Control input for the optional di/dt or dv/dt control, setting of the soft shut down or active clamping RC A; RC B RC network for VCE sat reference curve Datasheet 8 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.6 Pin Configuration of the 2ED300C17-S /- ST 1 VDD 2 VDD 3 VDD 4 Fault 5 Reset 6 CA 7 IN B 8 CB 9 Mode 10 Fault 11 IN A 12 GND 13 GND 14 VDC 15 VDC 16 VDC 17 VDC 18 VDC 19 GND 20 GND 21 GND 22 GND 23 GND Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC A 38 Vce sat A 37 E. A 36 Emitter Sense Collector Csup Gate RSSD CSA 2ED300C17-S Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sence B 27 RC B 26 Vce sat B 25 E. B 24 RSA Emitter Sense Collector Csup Gate RSSD CSB RSB Figure 1.6 Pin configuration of the 2ED300C17-S Pin Label Function Pin Label Function 1 VDD +15V for electronics primary 2 VDD 3 VDD +15V for electronics primary 45 Gate A Gate channel A +15V for electronics primary 44 Gate A Gate channel A 4 Fault Fault output 43 COM A Reference point A 5 Reset Logic level to reset channel A and B 42 COM A Reference point A 6 CA Delay time ch. A “half-bridge mode” 41 VA+ +16V external buffer capacitor 7 IN B PWM input B 40 VA- -16V external buffer capacitor 8 CB Delay time ch. B “half-bridge mode” 39 Sense SSD / clamping input 9 Mode Mode selection 38 RC Reference RC network channel A 10 Fault Fault output 37 VCE sat Collector sense channel A E. A External fault input channel A 11 IN A PWM input A 36 12 GND Ground for electronics primary 35 Physically non existent 13 GND Ground for electronics primary 34 Physically non existent 14 VDC +15V for SMPS 33 Gate B 15 VDC +15V for SMPS 32 Gate B Gate channel B 16 VDC +15V for SMPS 31 COM B Reference point B 17 VDC +15V for SMPS 30 COM B Reference point B 18 VDC +15V for SMPS 29 VB+ +16V external buffer capacitor 19 GND Ground for SMPS 28 VB- -16V external buffer capacitor 20 GND Ground for SMPS 27 Sense Active clamping / SSD 21 GND Ground for SMPS 26 RC Reference RC network channel B 22 GND Ground for SMPS 25 VCE sat Collector sense channel B 23 GND Ground for SMPS 24 E. B External fault input channel B Gate channel B Note: The connection Ground for electronics primary and Ground for SMPS is permissible. Datasheet 9 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.7 Absolute Maximum Ratings Supply voltage VDC Maximum primary supply voltage +16 V PWM signal input voltage Vin Max. voltage on inputs IN A; IN B ±20 V Logic signal input voltage ViH Max. voltage (Mode; Reset) ±20 V Output voltage Vo Fault output blocking voltage 20 V Logic signal output current IOC Fault output; max. continuous current open collector 20 mA Peak output current ON IGon Max. driver peak output current +30 A Peak output current OFF IGoff Max. driver peak output current -30 A 133 mA 8 W 1700 V 1) Output current supplied by DC/DC Iout DC Average value per secondary supply voltage Maximum output power PDC/DC PDC/DC channel A + channel B Maximum IGBT voltage VCES Maximum collector-emitter voltage on IGBT Gate resistor RG min Min. gate resistor (module internal + external gate resistor) 1 Ω Gate charge QGmax Maximum IGBT gate charge 52 µC dv/dt Voltage slew rate secondary to primary side Switching frequency Supply current Duty cycle 2) kV/µs Top Operating temperature 2ED300C17-S -25...+85 °C Top Operating temperature 2ED300C17-ST -40...+85 °C Tsto Storage temperature -40…+85 °C fs max Max. switching frequency (Top < 65°C) 60000 Hz IDC max Sum of current supplied to VDC and VDD 670 mA Maximum duty cycle 100 % d 1) Current supplied from gate and supply output added 2) during test Datasheet 50 10 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.8 Recommended Operating Parameters Supply voltage primary DC-DC Power DC-DC SMPS Supply voltage electronics VDC Min. Typ. Max. Recommend. +14 +15 +16 +15 PDC-DC 8 +14 fS 0 60 kHz d 0 100 % Reference voltage for the VCE sat – monitoring VCEstat 2 9 Signal level (IN A/B; Reset; Mode) VLevel 4) Duty cycle Reactivation after fault condition 2) and IN A/B Low tBK +16 W VDD Switching frequency +15 V +15 8 3) 15 50 V V V 60 ms 1) “Conditions to be defined“ 2) See chapter 3.4 3) See chapter 3.7 4) Max. switching frequency depends on load and environmental conditions Datasheet 11 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.9 Electrical Characteristics Min. All values at 25 °C Typ. Max. No load input current IDC 80 mA Supply current logic IDD 8 mA Propagation delay time switch on tpd on 670 ns Propagation delay time switch off tpd off 580 ns Transition time differences tdif 50 ns Minimal pulse suppression tmd 400 ns VLevel 8 V Threshold level Interlock delay time half-bridge mode tTD Coupling capacitance primary/secondary Cps 18 pF Coupling capacitance sec. channel A to B Css 15 pF 1.10 1.6 µs Insulation Characteristics Isolation test voltage Visol IO Input- Output (RMS, 50Hz, 1s) 5000 V Isolation test voltage Visol 12 Output A - Output B (RMS, 50Hz, 1s) 2250 V Surge voltage test Visol Su Surge test according to EN50178 input to output 9600 V Clearance distance and creepage P rimary/ Secondary >15 mm Clearance distance Secondary/ Secondary >6 mm Creepage Secondary/ Secondary >14 mm Datasheet 12 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Datasheet 1.11 Mechanical Dimensions Note! The soldering pins of the design –ST are not coated. 2.95mm RM2.54mm 2.95mm RM2.54mm 2,95mm 24 45 8.88mm 28mm 72 mm 27 mm 1 23 60.5 mm RM2.54mm 2.31mm +/- 0,05 2.31mm (2.31mm) 20mm Max.25mm d=1mm Datasheet 13 PCB d=1mm V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST The transformer 1.12 Processing The device has been designed to be soldered onto a carrier board as a through-hole component either by dual wave soldering process or by selective soldering . For more information see IFX Additional Information, DS1, March 2008 The “-ST” version varies from the “-S” version throug h the use of a coating and use different OP-Amp. The coating used is type 1306N made by the company Peters. The soldering pins are not coated. When further coating processes are carried out, e.g. on the customer assembly, the compatibility of the coated type has to be established first. 2 The transformer 2.1 Reinforced isolation Protection Class II according to EN50178 The reinforced isolation between primary and secondary side of the two transformers and the switch mode power supply is the basis for the 2ED300C17-S. Highly insulated coil wires, core insulated ferrites and a special sealing compound (UL94 V-0) are used for this purpose. The design makes sure that all windings are physically separated from each other. There are no overlapping primary and secondary windings. The winding connections are terminated directly to the pins which are cast into the housing. All that is contained in a plastic housing certified to UL 94. 9 16 8 1 Figure 2.1 Complete transformers with cores in position Datasheet 14 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST The transformer is designed for use in industrial and traction applications. The test voltage applied between all inputs and all outputs is 5kV AC for 1 second. The test voltage applied between the secondaries is 2.25kV AC for 1 second. (EN50178 Table18) (Individual test). The insulation test is completed by the surge voltage test stipulated by EN50178. Surge voltage test according to (EN50178 table 17) is 1.2/50µs with 9.6kV. The partial discharge extinction voltage stipulated by the standard (EN50178 table19) is above 1920V peak value (series test). 3 Application of the 2ED300C17-S / -ST 3.1 Power supply The 2ED300C17-S has an integrated DC-DC switch mode inverter, which generates the required secondary voltages. The generated voltages are for the top and bottom channel with +15V primaries each ±16V secondaries. Hence the 2ED300C17-S only requires one external power supply of +15V. The 2ED300C17-S is operated on a stabilized +15V (±1V) supply. It is distinguished between VDD and VDC. All inputs are switched with +15V, where V DC should be additionally stabilized by a capacitor CDC (see figure 3.1). This stabilizing capacitor CDC should be 220µF. All GND pins have to be connected. To prevent a ground loop there is no internal connection of the DC-DC SMPS ground and the primary electronics. 10R 1µF +15V C DC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 VDD +15V VDD +15V VDD +15V Fault A Reset CA IN B CB Mode Fault B IN A GND GND VDC +15V VDC +15V VDC +15V VDC +15V VDC +15V GND GND GND GND GND Note! If the driver is turned on with +15V, a low voltage fault may be tripped depending on the voltage slew rate. This will be reset after 60ms if both signal levels IN A and IN B remain Low during this time. Note! No potential difference greater than 20V may occur between V DD and V DC. Figure 3.1 Pin configuration of +15V voltage supply Datasheet 15 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST Note! The 2ED300C17-S features secondary UVLO monitoring. If one of the secondary supply voltage drops below typical +12V or I-12V I, a fault condition will occur. This turns off the driver and is transferred to the primary as well. Warning: There is no monitoring of the primary supply voltage referring to undervoltage. The supply voltage applied has to be monitored. 3.2 Mode selection The 2ED300C17-S features two operating functions to drive Infineon Technologies IGBT modules. These are the direct mode and the half-bridge mode. • The direct mode: In this mode there is no link between the two channels of the 2ED300C17-S. Both channels IN A and IN B are working independently from each other and may both be turned on at once. The inputs IN A and IN B are switched with +15V PWM signals. The direct mode is activated by taking pin 9 ”Mode selection” to GND (e.g.: pin 12/13). The inputs CA pin 6 and CB pin 8 are not connected. Note! In the direct mode the inputs CA and CB must not be connected to +15V or GND. For EMC reasons it is recommended to connect the inputs CA and CB with 470pF to GND. • The half-bridge mode: This mode generates an interlock time between the two channels of the 2ED300C17-S. I.e. there is always only one channel active. The interlock time between the switching events may be selected. This is done with the inputs CA pin 6 and CB pin 8. The half-bridge mode is activated by taking pin 9 ”Mode selection” to V DD (pin 1/2/3). The inputs IN A and IN B are switched with PWM inputs. Explanation: There is always only one channel turned on. If there is a high signal on one channel, this is turned on after the interlock time has ended. If during this time there is a high signal for the second channel, it will be ignored until the first turned on channel has turned off. Datasheet 16 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST PWM IN A +15V 0V PWM IN B +15V 0V Gate A +15V -15V Gate B +15V Figure 3.2 Switching diagram with interlock delay times 3.3 Interlock delay times In half-bridge mode the 2ED300C17-S generates a minimal internal interlock delay time between the two channels. This minimal interlock time t TD is pre-set to 1 .6 µs. By adding a capacitance to the two inputs CA and CB this interlock time is extended and adapted to the requirements of the application. The capacitance is externally added between CA and CB to GND (see page 7 – 1.6 Pin configuration). The capacitance for the required interlock time is derived from the following table: Delay time CA / CA 1.6µs n.c. 2µs 47pF 2.4µs 100pF 3.4µs 220pF 4.3µs 330pF 5.4µs 470pF 9.6µs 1nF Table 3.3 Interlock delay time settings for half bridge mode NOTE ! It is not permitted to connect the inputs CA and CB direct ly to a voltage potential. The tolerance of the interlock delay times depends mainly on the tolerance of the external capacitors. This nee ds to be considered when choosing the capacitors! Datasheet 17 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST Pin 6 CA Pin 8 CB CA CB Primary Side Pulse Transformer Secondary Side A DC/DC Pin 12 GND Pin 13 GND Secondary Side B Figure 3.3 Connection of the external capacitors to increase the interlock times 3.4 Logic level The term “logic level” concerns the fault output and the reset input as well as the input for operating mode selection described in chapter 3.2. • Logic inputs The two inputs (reset and mode) may be stressed with a maximum voltage of 20V. The switching threshold is at 8V, so the existing +15V offers itself as switching signal. 1) Mode: see chapter 3.2 2) Reset: The driver can be reset via the reset input after a fault has been indicated. The reset input is active high, i.e. a high signal activates the reset. The threshold level is 8V. If reset is used by the PWM inputs IN A and IN B, the reset input is inactive and pin 5 (Reset) has to be permanently connected to GND. If both PWM signals are “low” for more than 60ms, the driver is reset. • Logic outputs The driver core recognizes short circuit current faults of the IGBTs and faults of the supply voltage. Additionally the 2ED300C17-S features an external fault input. If a fault is detected through the V CE sat monitoring, an under-voltage or the external fault input, the driver core is immediately turned off. With these faults on the secondary side, the IGBT is shut down via a soft shut down. Each fault is stored until a reset signal on Pin 5 is present. The reset is also activated when the input signal on both channels is low for more than 39ms. Indication of a fault occurs in any case via a common fault line on the logic output FAULT. The fault is brought out twice via Pin4 and Pin10. These outputs are configured as open collector. The outputs can operate at up to 20V and can switch a maximum of 20mA. They are designed to provide signals with 15V CMOS level. Datasheet 18 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST If a fault is recognized, the internal transistor switches and pulls the fault output to GND. +15V 1 2 3 4 5 6 7 8 9 10 11 +15V VDD +15V VDD +15V VDD +15V Fault Reset CA IN B CB Mode Fault IN A Fault GND Figure 3.4 Fault output Note! The fault outputs are internally connected. There is only one fault output for both channels. 3.5 Signal level In both the direct mode and the half-bridge mode the input IN A of the 2ED300C17-S controls channel A and input IN B controls channel B. The inputs feature a Schmitt-Trigger and an active high logic. A high level turns the IGBT on and a low level turns it off. The two signal inputs may be operated with a maximum of 20V per channel. Brief negative peaks of equal voltage will not lead to damage of the inputs. The switching threshold is at +8V to GND. The input impedance is 3.3kOhm for each channel. For long cables it may be necessary to connect an external burst suppression network. Note: The 2ED300C17-S features a minimal pulse suppression. Pulses with less than 400ns will be suppressed by the driver. PWM B PWM A 100µH 100µH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VDD +15V VDD +15V VDD +15V Fault Reset CA IN B CB Mode Fault IN A GND GND VDC +15V Figure 3.5 Input signals Datasheet 19 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST 3.6 IGBT connection The 2ED300C17-S features two independent channels to drive the IGBTs. It is possible to drive individual IGBTs, single IGBT-modules or IGBT-modules connected in parallel. The maximum size of the IGBT-modules depends mainly on the IGBT input capacitance and on the switching frequency. When considering the gate currents, note that these are not determined by the external gate resistors alone. Many Infineon Technologies IGBT modules have internal gate resistors. Additionally, the 2ED300C17-S features a low output impedance. Never the less a gate current calculated via the external gate resistor will never be realized in practice. An approximation for the drive power and peak current can be achieved with: § Driver power § Max. driver current • PG = f S • ∆VGE • Qg P = PDD + PG I G max = ∆VGE RG (min) fS = switching frequency Qg = IGBT gate charge (datasheet) PDD = driver dissipation ∆VGE = 30V at ±15V RG(min)=RG extern+RG intern Gate connection The gate of the IGBT is connected to Gate A or Gate B via the external gate resistor. The associated auxiliary emitter is connected directly to the COM outputs. The gate output voltage is ±15V with respect to COM A and COM B (considering chapter 3.1). By utilizing the external gate resistors it is possible to realize turn-on and turn-off with different gate resistances. Additionally to the gate resistor a gate-emitter resistor and gate clamping should be used. These would be placed between the gate and the aux. emitter. As RGE a resistor <10kOhm is recommended. The gate clamping is done with TVS diodes (transient voltage suppressor). These diodes prevent the gate voltage to rise to inadmissible levels through parasitic effects (e.g. Miller capacity). The external gate resistors are defined in the Infineon Technologies IGBT datasheet. The value of the internal gate resistor is also provided in the IGBT datasheet. Datasheet 20 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST RGA Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC A 38 Vce sat A 37 E. A 36 RGE RGB Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sense B 27 RC B 26 Vce sat B 25 E. B 24 RGE Figure 3.61 Gate connection RG on RG off Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 RGE Figure 3.62 Gate connection with RG • on and RG off Collector connection The 2ED300C17-S is able to measure and evaluate the voltage between collector and emitter of an IGBT. This is used to recognize a short circuit and then shut-down. For the optional function of DVRC or active clamping the connection to the collector is also required. For the short circuit shut-down function the auxiliary collector is connected to VCEsat channel A or VCEsat channel B. To block the high DC-link voltage during shut-down a diode D X with high reverse blocking voltage has to be connected between the collector and the “V CE sat“ input. The reverse blocking capability of these diodes should be higher than the IGBT-module voltage (600V/1200V/1700V). Further the diode has to follow the switching frequency and therefore has to be accordingly fast. Two or three diodes in series is an option to achieve the required blocking capability. Datasheet 21 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST Application and adjustment of the short circuit shut-down is described in detail in the next chapter 3.7. DA 2x UF4007 RGA Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC B 38 Vce sat A 37 E. A 36 RGE 1nF 470R Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sense B 27 RC A 26 Vce sat B 25 E. B 24 DB 2x UF4007 RGB RGE 1nF 470R Figure 3.63 Collector connection for Vce sat measurement Note! The R GE, the gate-emitter clamping diodes, the gate resistor and the collector diodes DX should be placed in the closest possible vicinity of the module. Note! If wire links are used between the drivers and the IGBTs, the gate lead should be twisted together with the respective emitter and collector leads. These connections should be as short as possible. Lengths of more than 20cm are to be avoided. 3.7 IGBT short circuit and over-current shut-down with SSD “Soft Shut Down“ A short circuit is detected by the integrated V CE measurement in the 2ED300C17-S (see chapter 3.6). The 2ED300C17-S measures the V CE voltage while the IGBT is turned on. If the V CE rises above the preset reference voltage during this period, a fault is triggered and the IGBT is turned off via the internal soft shut-down. For Infineon Technologies IGBTmodules with NPT and FS-technology the soft shut-down reduces the voltage over-shoot by a slower turn-off. • The reference curve The reference curve is only adjustable via an external RSX and CSX. With RSX the reference voltage is set and with C SX the reference time. Datasheet 22 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST The resistor and the capacitor are connected between RC A and COM A or RC B and COM B. The reference time elapses directly with the turn-on of the respective driver side (See figure 3.7.2). Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC B 38 Vce sat A 37 E. A 36 V CSA Vref Reference curve RSA Vref=f(RSX) Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sense B 27 RC A 26 Vce sat B 25 E. B 24 Vref=f(CSX) CSB t PWM RSB t Figure 3.7.1 RSX and CSX connection to adjust the reference curve Figure 3.7.2 Reference curve Reference voltage Vref RSX Reference time tref CSX at Vref =2V CSX at Vref =4V CSX at Vref = 6V 2V 4V 6V 8V 9V 2kΩ 5.4kΩ 12kΩ 32kΩ 70kΩ 1µs 3µs 5µs 6µs 60pF 150pF 200pF 100pF 220pF 300pF 120pF 340pF 570pF 800pF Table 3.7 gives reference voltage Vref and reference time tref until the reference voltage is reached Example: In case of Infineon PrimeSTACKs and ModSTACKs with EiceDRIVER for CSX = 220pF and RSX = 68k are used. A comparator inside the 2ED300C17-S compares the voltage at the VCE sat input with the reference voltage Vref . The maximum VCE voltage at the comparator will be 10V. With the turn-on of the IGBT the VCE voltage drops to its threshold value depending on the load current I C. To suppress commutation effects during turning on the IGBT there is the settable reference curve Vref . This drops, depending on the external CSX and RSX network, from 16V to the set voltage level. If the VCE voltage rises above the reference voltage at any time, a fault is tripped and the driver is locked. The various different operating conditions are depicted in the four cases below. If the fault occurs, the IGBT is turned off via the SSD (Soft Shut Down) function. Datasheet 23 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST +15 V +15 V +10 V +10 V Vref +5V +10 V VCE Case 2. IGBT turns on too slowly or reference time is too short +15 V +15 V Fault Vref +5V VCE Case 1. Usual case Fault Fault VCE VCE +10 V Vref +5V Case 3. Short circuit during operation Vref +5V Case 4. Short circuit during turn-on Figure 3.7.3 Different faults depicted • Trigger suppression for the Vce sat measurement To vary the sensi tivity of the VCE the 2ED300C17-S uses an RC timing network. This network is used to set the sensitivity of the VCE SAT monitoring as required by the individual application. One has to keep in mind that this RC network provides a timing function. Accordingly, reaching the reference voltage and in this connection the detection of the temporal short circuit current in the IGBT depends on the charging process of the CVCE capacitor. This can easily be defined by measuring in front of CVCE once and in comparison to this VCE sat X directly at the input. The RC combination is able to extend the operating time till the IGBT switches off in case of a short circuit. This is to say that in addition to reference time tref (table 3.7) Datasheet 24 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST and SSD cycle time tSD=5µs and system cycle time tSD=1µs, the trigger suppression time has to be taken into account. As a standard, a value of RVCE =470R and CVCE =1nF is recommended. Should the VCE sat monitoring react too sensitively the CVCE value can be increased. This of course extends the trigger time of the short circuit turn-off. In a contrary case, it is certainly recommended to decrease the CVCE value or the RVCE value. One always has to make sure that the short circuit across the IGBT is switched off within 10µs. DA 2x UF4007 RGA Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC B 38 Vce sat A 37 E. A 36 Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sense B 27 RC A 26 Vce sat B 25 E. B 24 RGE CVCE 1nF RVCE 470R DB 2x UF4007 RGB RGE CVCE 1nF RVCE 470R Figure 3.7.4 Trigger suppression of the Vce sat measurement 3.8 SSD “Soft Shut Down“ The SSD “Soft Shut Down“ is used to softly shut down the IGBT if a fault occurs. This is useful in order to avoid destruction of the IGBT due to high voltage overshoots during turnoff. If set correctly, the SSD will reduce the turn-off di/dt of all Infineon Technologies IGBT products and hence the voltage overshoot during fault conditions. The “Soft Shut Down“ is set with resistor RSSD. This resistor is externally connected between Sense and –16V (see figure 3.8.1). Datasheet 25 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC A 38 Vce sat A 37 E. A 36 CSA RSSD RSA 2ED300C17-S Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sence B 27 RC B 26 Vce sat B 25 E. B 24 RSSD CSB Figure 3.8.1 Connection of RSB RSSD The “Soft Shut Down“ has to be adapted to the IGBT type used. Since the turn-off behavior and the resulting voltage overshoot depends on the IGBT type and the construction of the entire application, the resistance of the RSSD resistor has to be found in a practical manner (For more information see IFX AN 2007-05). As guidance one can use the module FS450R17KE3 with an RSSD = 10kΩ . IGBT modules with a greater input capacitance C ies will need a lower RSSD value, IGBT modules with a lower input capacitance C ies will need a greater R SSD value. The dissipation of the resistor is calculated as follows: PSSD [W ] = 1024 R SSD If a fault is recognized and the “Soft S hut Down“ is activated, the capacitances of the internal bipolar- output stage go through the charge reversal and thus the IGBT input capacitance C ies and the Miller capacitance C res are discharged slowly. This process is limited to tSD= 4µs. After this time the output of 2ED300C17-S turns off hard. The driver has to be reactivated by a “Reset“ (see chapter 3.4 logic levels). Note! The “Soft Shut Down“ may slightly increase the V GE. Hence the gate clamping described in chapter 3.6 IGBT connection has to be observed. Note! Infineon Technologies IGBT modules are generally designed for short circuits of up to tP ≤ 10µs. Note! The “Soft Shut Down” is not 100% protection from voltage overshoots during fault turn-off! Datasheet 26 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST Should a short circuit occur and at the same time the natural PWM pulse go to Low Level, the SSD can not be commenced. This case is rare but can occur. Active Clamping will then protect against over-voltage (see 3.10). Figure 3.8.2: Typical short circuit turn-off with SSD The short circuit turn-off depicted in Fig. 3.8.2 clearly shows the course of the Gate-Emitter voltage with SSD. 3.9 External fault input The 2ED300C17-S features an external fault input E.A and E.B. These are used to set the internal fault memory by a high gate output signal and to trigger a fault. The fault inputs E.A and E.B have an active high logic. Switching level is at 5V, so that a high signal will trigger a fault. The maximum level for the input is V A+ or V B+ referenced to the adjoining COM. This input is considered for example to detect an over-temperature and/or over-current and so to shut down the driver. Note that the inputs E.A and E.B may rise up to DC-link potential! Note ! If the inputs E.A and/or E.B are not used, they have to be connected to COM A / COM B. Datasheet 27 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST 3.10 “Sense“ input (SSD “Soft Shut Down“, optional DVRC or active clamping) A special feature of the 2ED300C17-S is the ability to directly manipulate the driver output stage. This is a bipolar output stage externally accessible via the ”Sense” input. This is necessary to limit the voltage overshoot through the di/dt during turn-off of the IGBTs. (See also chapter 3.8 SSD). With an additional circuit and by using the sense input it is possible to control this di/dt in every operating point during turn-off of the IGBT and hence prevents inadmissibly high turn-off voltage overshoots. A further application of the ”Sense” input is the use of an active clamping** with direct feedback to the outp ut stage. In this case the TVS diodes used are only minimally loaded which makes for example transile diodes possible. This can then be combined with an active clamping directly to the gate. (For more information see IFX AN 2007-05). SM6T220A ** not yet tested with all IGBT modules! RGA Gate A 45 Gate A 44 COM A 43 COM A 42 VA+ 41 VA- 40 Sense A 39 RC B 38 Vce sat A 37 E. A 36 RGE SM6T220A RGB Gate B 33 Gate B 32 COM B 31 COM B 30 VB+ 29 VB- 28 Sense B 27 RC A 26 Vce sat B 25 E. B 24 RGE Figure 3.10 Utilization of the “Sense“ input with active clamping The standard application with the 2ED300C17-S /-ST is the “Soft Shut Down“. This is a quasi- linear turn-off during fault condition. The “Soft Shut Down“ has to be adapted to each module type. For this an external resistor RSSD is connected between “Sense“ and -16V. (See chapter 3.8 Short circuit/over-current turn-off with “Soft Shut Down“ ) Note! The “Soft Shut Down“ is the standard setting of the 2ED300C17-S (-ST). For this a resistor R SSD should be connected between “Sense“ and –16V. If active clamping is used the R SSD can also be utilized. Datasheet 28 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST 3.11 Additional output voltage / buffer capacitors Depending on the utilization of the internal DC-DC SMPS an additional use of the secondary supply voltage is possible. This is made available on the outputs +16V and –16V and is referenced to the respective COM. This voltage is potential separated to the primary side. The ground COM is here referenced to the emitter of the respective IGBT. The outputs +16V and –16V are also used to connect buffer capacitors C sup. These prevent voltage drops with high pulse currents. The buffer capacitors should be placed in closest vicinity to the 2ED300C17-S (-ST) and must always be used. RGA Gate A 45 Gate A 44 COM A 43 COM A 42 +16V 41 -16V 40 Sense A 39 RC B 38 Vce sat A 37 E. A 36 Csup RGE RGB Gate B 33 Gate B 32 COM B 31 COM B 30 +16V 29 -16V 28 Sense B 27 RC A 26 Vce sat B 25 E. B 24 Csup RGE Figure 3.11 2ED300C17-S with external buffer capacitors Note! The additional electrolytics C sup always have to be connected. When selecting these capacitors take note of the high ripple current requirement and ensure to design for application lifetime. Meaning, only caps with low impedance are to be used. Our recommendation: 220uF max total capacitance per channel, should not to be exceeded. Ceramic caps may be considered as an alternative in applications requiring life times. Datasheet 29 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST Application of the 2ED300C17-S / -ST 3.12 Datasheet Application example 2ED300C17-S 30 V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST General 4 General 4.1 Designations and symbols Cps CRR Csup Cies Cies max CSX CVCE COM d DVRC DOCD dv/dt di/dt EDFA fS fSmax IC IDC IDD IG IG on IG off IOC Iout |IG| AV |Iout| AV IDC max PDC/DC PSSD PDD PG QG RG RG min RG intern coupling capacity primary/secondary coupling capacity sec. channel A to B buffer capacitor IGBT input capacity max. admissible IGBT- Gate- capacity reference capacitor for time setting VCE sat trigger suppression reference point duty cycle Dynamic Voltage Rise Control dynamic over-current detection voltage slew rate current rise time logic external fault input switching frequency max. admissible switching frequency IGBT collector current current draw DC-DC current draw electronics output peak current output peak current “On” output peak current “Off” logic signal output current output current of VA·B± summed average gate current summed average output current maximum primary current draw peak output power power of the SSD resistor driver power dissipation maximum gate power dissipation max. IGBT gate charge at 15V gate resistor minimum gate resistor IGBT chip internal gate resistor IGBT external gate resistor (Datasheet) gate-emitter resistor Soft Shut Down resistor RG extern RGE RSSD Datasheet 31 RBX RVCE SSD tTD tTD min tBK tdif tmd tP tref tSD tsys tpd T op T stg VLevel VDD VDC ViH ViHS Vin Visol Visol IO Visol 12 Visol Su VCE VCE sat VCE stat Vref VGE VA;B+ VA;B- reference resistor voltage setting VCE sat trigger suppression Soft Shut Down interlock delay time minimum interlock delay time reactivating time transition time difference minimal pulse suppression short circuit time reference time DOCD transition time SSD system transition times signal transition time operating temperature storage temperature logic switching level supply voltage electronics primary primary DC/DC supply voltage maximum voltage of the logic levels switching threshold logic signals signal input voltage isolation test voltage isolation test input-output isolation test output A-output B surge test voltage input-output IGBT collector-emitter voltage IGBT saturation voltage VCE sat monitoring reference voltage reference voltage of the DOCD gate-emitter voltage secondary positive voltage secondary negative voltage V3.1 , 2009-03-11 EiceDRIVER TM EiceDRIVER(TM) 2ED300C17-S/ -ST General 4.2 Type designation EiceDRIVER™ For example: eupec IGBT controlled efficiency DRIVER 2ED300C17-S Isolationsklasse: F = funktion isolation S = safety isolation Voltage class: 06 = 600V 12 = 1200V 17 = 1700V und 1200V 33 = 3300V 65 = 6500V Driver type: C = Driver core with DC/DC E = Evaluation board I = Driver IC (Coreless Transformer) L = Driver IC (Level shifter) Maximum output current: z.B. 004 = 0.4 A 020 = 2.0 A 300 = 30.0 A eupec IGBT driver Driver channels 1 = single driver 2 = halfbride driver 6 = SixPACK driver Datasheet 32 V3.1 , 2009-03-11 http://www.infineon.com Published by Infineon Technologies AG