Arrow Electronics, Inc. · NYSE:ARW

Arrow Electronics — Wolfspeed, A Cree Company — Technical Presentation (2018)

34 slides from Arrow Electronics's technical presentation, 2018

  1. Slide 1: CRD-06600FF10N 6.6 kW Bi-Directional EV On-Board Charger

    ——xs_ Wolfspeed. | A CREE COMPANY (CRD-O6600FF1ON) rh 6.6 kW Bi-Directional EV On-Board Charger , i.

  2. Slide 2: CRD-06600FF10N demo board overview

    • CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger demo board is based on Cree’s 1000 V, 65 mΩ (C3MTM) SiC MOSFETs • This demo board consist of a Bi-Directional Totem-Pole PFC (AC/DC) Stage and an Isolated Bi-Directional DC/DC Stage based on a CLLC topology with a variable DC Link Voltage •

  3. Slide 3: Design specifications

    • The design specifications of CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger demo board are mentioned in the following table:

  4. Slide 4: Design specifications (continued)

    DESIGN SPECIFICATIONS (CONTINUED..) Inversion Mode a Input voltage range 250VDC-450VDC When the battery voltage is below 320VDC, it will stop delivering power THD and PF THD <5% and PF > 0.99 At Rated Power Output voltage range Grid Voltage: 120 VAC or 230 VAC Standalone Mode: 230 VAC, 60 Hz Input r

  5. Slide 5: Physical dimensions and pinouts

    • The physical dimensions and the pinouts of CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger demo board are: Physical Dimensions Pinouts

  6. Slide 6: System block diagram and topology

    • CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger demo board consist of a Bi-Directional Totem-Pole PFC (AC/DC) stage and an isolated Bi-Directional DC/DC stage based on CLLC topology with a variable DC Link Voltage • Cree’s 1000 V, 65 mΩ (C3MTM) SiC MOSFETs have been utilized on both stag

  7. Slide 7: Cree 1000 V, 65 mΩ C3M SiC MOSFET

    Ω • Cree’s 1000 V, 65 mΩ (C3MTM) SiC MOSFET (P/N: C3M0065100K) has been utilized in CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo Board • C3M0065100K comes in a TO-247-4 Package with a Kelvin source availability • There is a significant reduction in the source inductance due to the

  8. Slide 8: Totem-pole PFC boost operation

    • In the charging mode, the AC/DC stage is configured as a Totem-Pole PFC Boost converter. • One leg of the Totem-Pole (AC/DC) PFC stage will switch at high frequency while the other leg operates at low frequency (Grid Frequency) • Due to the proper switching sequence of SiC MOSFETs in AC/DC stage,

  9. Slide 9: Bi-directional CLLC DC-DC stage

    • The DC-DC Bi-Directional CLLC stage comprises of two identical H-Bridges separated by an isolation transformer. • Both H-Bridges have dedicated isolated gate drivers with a separate isolated power supply for each SiC MOSFET. • The construction of CLLC converter is similar to the LLC converter with

  10. Slide 10: Control structure

    • Totem-Pole PFC (AC/DC) Stage has a two loop structure, the outer voltage loop controls the DC Link voltage which generates the reference for inner current loop • The inner current loop maintains a sinusoidal current in phase with the input grid voltage • The DC-DC Bi-Directional CLLC stage runs at

  11. Slide 11: Control board sub-systems

    • In addition to the Texas Instruments (P/N: TMS320F28377) Delfino floating point controller, the control board of CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo Board consist of further sub-systems as well. • These sub-systems includes Control Power Supply unit, DC-DC Converter for

  12. Slide 12: Gate driver circuitry

    • The gate driver circuity is based on isolated gated driver ICs with up to 1200 V isolation on the high voltage side and 3.75 kV isolation on the battery side. • The isolated dual polarity gate driver supplies for each driver IC is generated from an isolated DC-DC converter module from Mornsun (P/N

  13. Slide 13: High voltage side gate driver

    • The high voltage side MOSFETs are driven by Infineon gate driver IC (P/N: 1EDI30I12MHXUMA1) • The driver features 3A peak source and sink current capability, up to 1200 V isolation and active miller clamp for gate which along with the negative supply provides an additional protection against paras

  14. Slide 14: Battery side gate driver

    • The battery side MOSFETs are driven from an Silicon Labs isolated gate driver IC (P/N: Si8261BCC-C-IS) • The driver IC is capable of supporting gate current of up to 4A with input to output isolated of about 3.75 kV • Some additional features of the gate driver includes: under voltage protection a

  15. Slide 15: Performance data

    PERFORMANCE DATA — Wolfspeed. | ACRE COMPANY ©2018 Cree ne llrightsreserved

  16. Slide 16: AC/DC stage switching waveforms

    • Performance of the AC/DC stage of Cree’s CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo Board can be evaluated by the analysis of drain to source voltage (Green) and the gate to source voltage (Yellow) waveforms, while Switching Frequency of one of the leg is maintained at 67kHz •

  17. Slide 17: AC/DC stage inductor current and grid voltage

    • Performance of the AC/DC stage can be analyzed by the Inductor current (Pink) and Grid voltage (Blue) waveforms • Both Inductor current (Pink) and Grid voltage (Blue) waveforms are measured at 1.4 kW and 6.0 kW • In both loading conditions, the Inductor current (Pink) and Grid voltage (Blue) wavef

  18. Slide 18: AC/DC stage efficiency

    • The efficiency of the AC/DC stage is also measured at various DC Link voltage levels • AT 390 V DC Link voltage, the efficiency of the AC/DC stage is close to 98 % • While at 680 V DC Link voltage, the efficiency of the AC/DC stage is close to 97.2 % Eff -390V DC link Eff-680V DC link 98.8 97.9 98

  19. Slide 19: DC/DC stage waveforms

    • Performance of the DC/DC Stage of Cree’s CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo Board can be evaluated by analyzing primary current (Pink), primary MOSFET gate (Green) and drain to source voltage (yellow) waveforms at various input voltages and load conditions • During no l

  20. Slide 20: DC/DC stage efficiency

    • The efficiency of the DC/DC stage is measured at various DC Link and Output voltage levels • AT 390 V DC Link voltage and 260 V Output voltage, the efficiency of the DC/DC stage is close to 97 % • While at 680 V DC Link voltage and 450 V Output voltage, the efficiency of the DC/DC stage is 98 % (a

  21. Slide 21: Whole system performance

    • For the performance evaluation of whole system (AC/DC + DC/DC), Grid Voltage of 230 V is fed into the system and the DC output reference is set at 260 V and 450 V respectively with a loading condition of 4.3 kW. • The overall efficiency achieved by the whole system during the above mentioned condi

  22. Slide 22: Whole system efficiency

    • The overall efficiency achieved by the whole system during the loading condition of 4.3 kW with 260 V Grid Voltage is close to 96 % • While the overall efficiency at the loading condition of 4.3 kW with 450 V Grid Voltage is close to 96 % as well Eff -390V DC link Eff -680V DC link 97.5 Vout= 260V

  23. Slide 23: Demonstration of C3M SiC MOSFETs summary

    • Demonstration of Cree’s 1000 V, 65 mΩ (C3MTM) SiC MOSFETs in a 6.6 kW Bi-Directional converter targeting high efficiency and high power density On-Board Charging applications • Cree’s new C3MTM SiC MOSFETs have low switching losses and superior body diode performance, which is ideal for the Bi-Dir

  24. Slide 24: Schematic and package contents

    • Schematic of Cree’s CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo board • Package Contents of Cree’s CRD-06600FF10N, 6.6 kW Bi-Directional EV On-Board Charger Demo Board (If user require more information about the detailed operation of Cree’s CRD-06600FF10N, 6.6 kW Bi-Directional

  25. Slide 25: Power board schematic

    6 5 4 3 2 1 REVI SI O N RECO RD LTR EC O NO : APPRO VED : D ATE: + 1 2V DL4007 RLY1 C1 9 1 D37 H E1 AN - P- D C1 2 V- Y5 4 .7u F 50 V J1 1 2 C 1 Q17 2 RELAY CON T RO L I N PUT B 3 4 E TER B LO CK 2 PO S . 2 . 5 4 MM 10k R69 1 2 V _ GN D D D L_PH CLAMP_3 CLAMP_1 GATE_3 GATE_1 F1 FU S EH O LD ER_ CLI

  26. Slide 26: Gate driver schematic

    6 5 4 3 2 1 REVI SI O N RECO RD LTR ECO NO : APPRO VED : D AT E: 1 S MB 5 9 1 8 BT3 G D3 6 PS1 3 + 12 V + 1 5V + C224 5.1V 4 7 UF C2 2 1 C2 2 2 1 VI N + VO 5 3 5V 4 .7u F 4 .7u F U1 5 0V 5 0V U7 4 0V 1 8 2 3 + 5 V_ 1 VC C1 CLAMP CLA M P_ 1 1 8 GN D - VO 1 2 V_ G N D + 5 V_ 1 VCC 1 C LAM P CL A M P_

  27. Slide 27: Schematic of CRD-06600FF10N (control board 1)

    SCHEMATIC OF CRD-O6600FFION, 6.6 kw Bi-Directional EV On-Board Charger (CONTROL BOARD SLIDE 1) L,. a fo BY ae Hees st Wolfspeed. |» cat courauy (© 2018 Cres ne Alightsreserved

  28. Slide 28: Schematic of CRD-06600FF10N (control board 2)

    SCHEMATIC OF CRD-O6600FFION, 6.6 kw Bi-Directional EV On-Board Charger (CONTROL BOARD SLIDE 2) st Wolfspeed. | ACRE COMPANY (©2018 Cee ne lights reseed

  29. Slide 29: Bill of materials

    Item Qty Reference Description Distributor Distributor P/N Manufacturer Manufacturer P/N PACKAGE 1 1 BD1 BRIDGERECT SINGLE PHASE 1000V 25A TH DIGIKEY 641-1374-5_DNP COMCHIP GBU2510-G_DNP TH 2 8 C6 C12 C65 C73 C81 C89 C97 C105 CAP CER 0.01UF 10% 16V X7R 0603 DIGIKEY 445-6855-2-ND TDK CORP. C1608X7RIC

  30. Slide 30: Package contents (power board)

    PACKAGE CONTENTS OF CRD-06600FFION, 6.6 kW Bi-Directional EV On-Board Charger (POWER BOARD) tem |_ ary Reference Description Distributor Dis P/N ‘Manufacturer ‘Manufacturer P/N. PACKAGE (C28 C41 C147 C151 C155 C159 C163 C167 26 | 33 ¢171€175 €179 C183 C187 CAP 47UF 35V ELECT PW RADIAL DIGIKEY 104177

  31. Slide 31: Bill of materials (continued)

    Item Qty Reference Description Distributor Distributor P/N Manufacturer Manufacturer P/N PACKAGE 58 8 R1 R9 R32 R35 R37 R47 R50 R66 RES 10k 1% 1/10W 0603 DIGIKEY P10KGCT-ND PANASONIC ERJ-3GEYJ103V RES0603 59 8 R36 R20 R4 R48-49 R34 R65 R16 RES 10k 1% 1/10W 0603 DIGIKEY P10KGCT-ND PANASONIC ERJ-3GEYJ

  32. Slide 32: Bill of materials (control board)

    Item Qty Reference Description Distributor Distributor P/N Manufacturer Manufacturer P/N PACKAGE 1 3 U2 U4 U8 Precision Optically Isolated Voltage Sensor DIGIKEY ACPL-C870 AVAGO TECH ACPL-C870 SO-8 2 1 Q1 MOSFET N-CH BSS138 220MA SOT23 ELEMENT14 9845330 FAIRCHILD SEMI. BSS138 SOT23 3 2 C123 C130 CAP

  33. Slide 33: Bill of materials (continued)

    Item Qty Reference Description Distributor Distributor P/N Manufacturer Manufacturer P/N PACKAGE 39 2 U7 U19 IC PRECISION REF 1.5VREF SOT23 Digikey ISL21010CFH315Z-TK INTERSIL ISL21010CFH315Z SOT23-3 40 1 U10 IC CURRENT SENSOR DIGIKEY LT3092EST#PBF-ND LINEAR TECH. LT3092EST#PBF SOT223-3 41 1 U11 IC

  34. Slide 34: Thank you

    THANK YOU —~ Wolfspeed. | ‘A CREE COMPANY © 2018 Cree, Inc llrightsreserved

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