The coreless transformer technology has been chosen by main major driver ic manufacturers as the most adequate. Gate driver leverages coreless transformer for 1200v apps. Finally, an integrated gate driver is also fabricated using the optimal design of ict, achieving a compact area of 0. Ji silicon on insulator soi coreless transformer ct infineon gate. The experimental results of this gate driver have validated the use of isolated signal and energy transfer by onchip transformer for both high side and low side applications.
To drive the high side switch in a half bridge configuration it is necessary to. Infineon gate driver ics selection guide 2019 nexty electronics. Igbtmosfet applications based on coreless transformer driver ic 2ed020i12 f a. Coreless transformer ct technology is an isolated technology which uses semiconductor manufacturing. Coreless planar printedcircuitboard pcb transformersa fundamental concept for signal and energy transfer s. Pdf integrated coreless transformer for gate driver signal isolation. Infineon gate driver ic technologies x junctional isolation technology x. Smt packages including the gt03, gt06, and gt04 series feature high et values and high creepage distance for high power igbt applications. Leveraging the application expertise and advanced technologies of infineon and international rectifier, the industrial and generalpurpose gate driver ics are well suited for many application such as major home appliances, industrial motor drives, solar inverters, ups, switchedmode power supplies, and highvoltage lighting.
Design of a varying ultrasonic frequency amplifier. Igbtmosfet applications based on coreless transformer. The device drives a lowprofile, centertapped transformer primary from a 3. Design and characterization of a signal insulation coreless. The products in this series successfully combine a shift to high coupling low leakage with a shift to completely automatic winding by employing a new structure that makes automatic winding possible, resulting in isolation transformers that can provide stable output. To achieve this goal a modulatordemodulator circuit will be selected from several existing designs and an isolation transformer will be designed as a cpt to produce a high frequency high.
Both, signal and continuous power are transferred via coreless transformers. Coreless transformer technology is very robust and can easily be combined with innovative functions such as. The sn6501 is a monolithic oscillatorpowerdriver, specifically designed for small form factor, isolated power supplies in isolated interface applications. The integrated circuits are designed for open foundry cmos processes. Isolation transformers with high withstand voltages are required in the igbt gate drive power supplies of motor inverters for xevs. Some gate drivers include the miller clamp transistor, while others require an external transistor the industry trend is to try to avoid the cost and complexity of a negative supply. Designed with coreless transformers ct isolation technology, the. Infineon gate driver ic technologies leveraging the application expertise and advanced technologies of infineon and international rectifier, the industrial and general purpose gate driver ics are well suited for many application such as major home appliances, industrial motor drives. Poor gate drive waveform with excessive highfrequency ringing. Fast switching of the power stage can have a major impact on the system functionality if the driver is not designed for such an application. The associated demodulation circuit will also be presented, as the control signal must be modulated at. A new gate driver ic family that fits all infineon technologies presents the new eicedriver compact family, a single channel gate driver ic for general purpose. Mosfet and igbt gate control is achieved by charging and. These drivers offer functional basic, reinforced isolated, ul 1577, and vde 0884 certified products.
Isolated gate drivers infineon technologies mouser. At this years sps ipc drives trade fair for electrical automation, infineon technologies ag presented its new 1edi eicedriver compact singlechannel gate driver for applications with isolation voltages of up to 1200v. Infineon gate driver ic technologies 4 junctional isolation technology 7. However, coreless planar electromagnetic transformer ct technology is an alternative solution that can also give satisfactory results. Today, texas instrument and silicon labs are the main companies using capacitive coupling isolation. Coreless pcb transformers for power mosfetigbt gate drive circuits, ieee. Infineon 2channel mosfet driver ics are the crucial link between control ics and. Galvanic isolated gate driver infineon technologies. Optoisolated gate drivers voltage sources 23 new product highlights 26 irs2890ds 600v gate driver ic 26 irs200x 200v gate driver family 27 2edl halfbridge drivers with bsd 28 1edi20i12sv isolated drivers with src 29 1edi compact isolated drivers 30 1edn and 2edn lowside families 31 gate driver ic support 32 gate driver selection tool 32. Dont forget the and gate add the totempole drivers if output capability of and gate is limited. Igbtmosfet applications based on coreless transformer driver. Coreless transformer provides innovative features the expansion of the eicedriverfamily coreless transformer technology was introduced in the market by infineon technologies in 2003 1, 2 as a core technology for igbt gate drive ics.
Resources and help modeling and characterization of 0. The secondary can be wound to provide any isolated voltage based on transformer turns. Gate drive transformers high isolation transformers pulse. This allows it to be substantially smaller and cheaper 6. The aim of this thesis project is to design a signal isolation transformer for gate driver applications using coreless planar transformers cpt on a lowtemperature cofired ceramic ltcc substrate. However, tis iso7821 digital isolator shows 25 years lifetime and a cmti 100kvs.
Infineons galvanically isolated drivers are based on the companys coreless. This allows it to be substantially smaller and cheaper. Required current is directly related to the gate charge qg operating speed an944 international rectifier, apt0103 advanced power technology output current from gate driver ics ranges from about 1a to about 5a generally driving a single to 220 or to247 device does not require buffering. Infineon gate driver ic technologies 4 junctional isolation technology 7 infineon soi technology 8 infineon ct isolation technology 10 silicon carbide drive requirements 12 product portfolio overview 14 halfbridge gate driver ics 14 threephase gate driver ics 16 highside gate driver ics 17 highside and lowside gate driver ics 19. The isolation allows for very large voltage swings e. The different variants of the family are intended to support discrete igbts, igbt modules. These modules are operational to 60 khz with output current capabilities in excess of 2 a peak. Pdf integrated coreless transformer for gate driver. While a discrete transformer needs a core to direct the magnetic flux, the coils in an ic can be placed close enough to save the core. It has been proved that piezoelectric transformer pt exhibit suitable characteristics, good integration capability and can be used for both power and signal transfer in low power applications. Sn6501 transformer driver for isolated power supplies. A nonresonant coreless gate driver with resonant power transfer is therefore developed with low delay time and jitter. System overview the gate drive circuit as shown in fig. Ideally we want the waveform at the gate of a mosfet to be very clean, with steep rising and falling edges, no overshoot, no ringing, and no droop to the tops and bottoms of the pulses.
Typical gate drive waveforms the pictures below show some typical waveforms observed at the gates of mosfets when driven by gate drive transformers. Coreless planar transformer using lowtemperature cofired. The present paper considers a 50 w resonant smps with coreless transformer for am radio applications above the am band 1. The eicedriver sil 1edi2001as is a highvoltage igbt gate driver designed for automotive motor drives up to 120kw. Gate driver configuration 5 v 25 v 100 v 200 v 500 v 600 v 650 v 1200 v gate drivers. All of our gate drive transformer products are rohs compliant and come in multiple winding configurations. Eicedriver galvanically isolated gate drivers use the unique coreless transformer ct technology to provide signal transfer across the galvanic isolation. Pdf on jan 1, 2014, dominique bergogne and others published integrated coreless transformer for gate driver signal isolation find, read. In a planar coreless transformer, the windings are realized by one. In this paper, a monolithic solution based on integrated coreless transformer ict for galvanic isolation and power transfer application is demonstrated. Coreless transformer technology may be either used to replace halfbridge drivers, which use level shifters. Coreless transformer ct technology infineon gate driver ic technologies 4 infineon gate driver ic technologies leveraging the application expertise and advanced technologies of infineon and international rectifier, the industrial and general purpose gate driver ics are well suited for many application such as major home appliances, industrial.
Ji silicon on insulator soi coreless transformer ct infineon gate driver ic technologies. Ron hui, senior member, ieee, and henry shuhung chung, member, ieee abstract magnetic cores have been used in transformers for over a century. To achieve this goal a modulatordemodulator circuit will be selected from. Infineon isolated gate drivers use magneticallycoupled coreless transformer ct technology to provide signal transfer across galvanic isolation. The gate driver includes an isolated gate driver power supply circuit that includes a coreless transformer e. Eicedriver enhanced gate driver ic family 1200 v galvanically isolated enhanced gate driver ics the eicedriver 1ed enhanced gate driver ics are galvanic isolated single channel igbt and sic mosfet drivers in dso16 package that provide output current capabilities of typically 2 a. It is the ability of a driver to overcome this effect that makes it win over a lesser gate drive circuit. Driver with coreless transformer technology for applications. This paper describes the technology used to build a first half bridge driver ic. Coreless transformer a new technology for half bridge driver ic. The pros and cons of a pcb transformer in gate driver circuits are dis cussed. Another manufacturer of isolated gate driver modules is eupec semiconductor 10. The sn6501 is a monolithic oscillatorpower driver, specifically designed for small form factor, isolated power supplies in isolated interface applications. These coreless transformers are used for transmitting switching information between input chip and output chip.
Gate drive circuitry for power converters sciencedirect. Coreless planar printedcircuitboard pcb transformers a. Aug 01, 2019 the gate driver includes an isolated gate driver power supply circuit that includes a coreless transformer e. With the development of multilevel, multiphase or network converters requiring the implementation of numerous distinct power transistor gate drivers, the control signal insulation is becoming more and more important in power converters. Gate driver ics serve as the interface between control signals digital or analog controllers and power switches. Pdf integrated coreless transformer for gate driver signal. Coreless transformer compared to previous designs the coreless transformer technology enables higher output currents and therefore higher power density while the same compact dso8 package can be used. The gate driver ics market split was primarily between the 400v voltage market and medium. Contactless energy transmission for an isolated 100w gate.
Pay attention to the ringing among c c1, c c2 and driver transformer when skip or uvlo. Coupling transformer an overview sciencedirect topics. This topology was originally designed for an hbridge power stage with zvs and zcs where each switch has eight mosfets fqb140n03l in parallel, commutation frequency is 150 khz. Our surface mount smt gate drive transformers feature basic and functional insulation and are available in various package sizes. The coreless transformer technology is very attractive for gatedrive ics.
The coreless transformer isolation technology ensures an undisturbed operation at offset. To achieve this goal a modulatordemodulator circuit will be selected from several existing designs and an isolation transformer will be designed as a cpt to produce a high frequency high temperature signal isolation for gate driver applications in switching converters, audio drivers, and motor drives. Eicedriver enhanced gate driver ic family 1200 v galvanically isolated enhanced gate driver ics the eicedriver 1ed enhanced gate driver ics are galvanic isolated single channel igbt and sic mosfet drivers in dso16 package that provide output current capabilities of typically 2. Eicedriver sil is based on the coreless transformer technology of infineon, providing galvanic isolation between lowvoltage and highvoltage domains. The galvanicallyisolated driver components are based on the coreless transformer technology developed by infineon, which enables output currents of up to 6a on. Gate drive transformers high isolation transformers. High voltage igbt gate drivers meet automotive needs. Design and characterization of a signal insulation. Its working great, i winded the two transformers around very small toroids with some turns, i didn. We must reduce the excessive leakage inductance by redesigning the gate drive transformer.
The 1edi2010as is a highvoltage igbt gate driver designed for motor drives above 5 kw. For coreless transformer technology based driver ic 1edf2ftb2b2 and 1edcompact, the output is level input signal related, which means after uvlo recovery e. Halfbridge drivers a transformer or an allsilicon drive. Coreless planar transformer using lowtemperature co.
The associated demodulation circuit will also be presented, as the control signal must be modulated at a high frequency through the coreless transformer. These modules employ a monolithically integrated coreless planar transformer design in a gate driver ic. Comparing piezoelectric and coreless electromagnetic. Gate drive transformers magnetics ice components, inc. Vcc come back to 15v, the output will turn on with next refresh signal when the input signal is high. Coreless transformer technology was introduced in the market by infineon technologies in 2003 1, 2 as a core technology for igbt gate drive ics. The 1edi2010as is based on infineons coreless transformer clt technology read more browse gate drivers datasheets for infineon technologies ag. Halfbridge gate driver ics 14 threephase gate driver ics 16 highside gate driver ics 17. Citeseerx coreless transformer a new technology for half.1542 610 1374 393 239 644 866 176 290 1324 1393 241 16 1044 1570 96 1453 480 102 1252 195 1307 457 1090 368 206 125 38 484 1099 318 368 90 962 717 1060 218 26 1363 1050 182 246 503 820 448