CRD-060DD17P-2

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Subject to change without notice. www.cree.com CRD-060DD17P-2: Auxiliary Power Supply evaluation board for C2M1000170J SiC MOSFET CPWR-AN15, Rev -, 03-2016Auxiliary Power Supply board for 7LD2PAK Board Summary The CRD -060DD17P-2 is a demonstration board for a single -end Flyback converter design with a commercially available 1700V Silicon Carbide (SiC) MOSFET. The design utilizes Cree’s 1700V SiC MOSFET in a new 7LD2PAK surface mount package which combines a small footprint with a wide creepage distanc e: 7mm between drain and source . By moving to the new surface mount package , design engineers can achieve economical thermal designs without the need for heat sink on the MOSFET. The demonstration board is not designed to be a product and is to be only used as a tool to evaluate the performance of Cree switching devices. INTRODUCTION Three-phase applications, such as motor drive, UPS and PV inverter, have a front end AC/DC or DC/DC converter to boost the DC link voltage up to 600Vdc to 800Vdc. Factoring in a design margin, the maximum DC link voltage is up to 1000V. To support such sys tems in practice, an auxiliary power supply is used to generate power for cooling fans, displays, control logic and system protection functions with the DC link voltage as its input. For such low power applications, Flyback topology is the most common type in the industry; however, the conventional single end Flyback topology has difficulty in meeting high input voltage. The first difficulty is caused by the high input voltage (1000Vdc); the single -end Flyback topology would require high blocking voltage sw itching devices. Currently, the Silicon MOSFET only has 1500V blocking voltage, which has low voltage stress design margin and thus affects the reliability of the power supply. The second challenge is that most of the 1500V Si MOSFETs have very large on -state resistance, and this will lead to higher losses, higher thermal and lower efficiency, especially when the whole three -phase system is operating at light output load and auxiliary power losses occupy most of total system losses. Lastly, to support a wide input voltage range, a pure resistance start up circuit is normally used. However, the start-up resistance will lead to losses at high input voltage. Larger start -up resistance will have less losses but lead to long start-up time at low input voltage. In order to overcome these auxiliary power supply design challenges to supply high input voltage, two-switch Flyback converter was proposed to use high side and low side 800V Si MOSFETs as shown in Fig.1, but it has the additional isolation gate drive circu it which increases component counts and complicates the design. This application note proposes a single -end Flyback converter to replace complicated two-switch Flyback converter by using 1700V SiC MOSFET. An active start -up circuit is also introduced to achieve less start-up losses with faster start up time. The 60W experimental reference design demonstrates that the 1700V SiC MOSFET can reduce total cost and simplify the design of auxiliary power supply.

CPWR-AN15, Rev -, 03-2016 Auxiliary Power Supply board for 7LD2PAK This document is provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at www.cree.com/power. For warranty information, please contact Cree Sales at PowerSales@cree.com. Input Connector: TE Connectivity 63849-1 Output A connector: 6 pos, Molex 22-27-2061 Output B connector: 4 pos, Molex 22-27-2041 Figure 2 Evaluation board connectors. The evaluation board is in a ready to use form. Please use nylon standoffs (not included) in the corner 4x Φ3.5 mm mounting holes to raise the board off the surface to avoid unintended shorts. Example stand -offs and nuts available on DigiKey P/N 36-25506-ND and P/N 36-4688-ND maybe used. A DC input source should be connected between DC+ and DC - and voltage (Vin) set within the limits of the specifications. When the DC source is turned ON the board generates 12Vdc at outputs A and B. CAUTION DO NOT TOUCH THE PRO DUCT WHEN IT IS ENER GIZED AND ALLOW THE BULK CAPACITORS TO COMPLE TELY DISCHARGE PRIOR TO HANDLING THE PRODUCT. THERE CAN BE VERY HI GH VOLTAGES PRESENT ON THIS EVALUATION P RODUCT WHEN CONNECTED TO AN ELECTRICAL SOURCE, A ND SOME COMPONENTS O N THIS PRODUCT CAN REA CH TEMPERATURES ABOV E 50˚ CELSIUS. FURT HER, THESE CONDITIONS WIL L CONTINUE FOR A SHO RT TIME AF TER THE ELECTRICAL SOURCE IS DISCONNECT ED UNTIL THE BULK CA PACITORS ARE FULLY DISCHARGED. Please ensure that appropriate safety procedures are followed when operating this product, as any of the following can occur if you handle or use this product withou t

CPWR-AN15, Rev -, 03-2016 Auxiliary Power Supply board for 7LD2PAK This document is provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at www.cree.com/power. For warranty information, please contact Cree Sales at PowerSales@cree.com. following proper safety precautions:

• Death
• Serious injury
• Electrocution
• Electrical shock
• Electrical burns
• Severe heat burns You must read this document in its entirety before operating this product. It is not necessary for you to touch the product while it is energized. All test and measurement probes or attachments must be attached before the product is energized. You must never leave this product un attended or handle it when energized, and you must always ensure that all bulk capacitors have completely discharged prior to handling the product.

CPWR-AN15, Rev -, 03-2016 Auxiliary Power Supply board for 7LD2PAK This document is provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at www.cree.com/power. For warranty information, please contact Cree Sales at PowerSales@cree.com. Bill of Materials: REV: AA Date: 12/28/15 Item Qty PerLocations (optional) Description (optional) Manufacturer NameManuf P/N 1 2 C201 C202 CAP FILM 1.8UF 5% 630VDC RADIAL Panasonic ECW-FA2J185J 2 1 C203 CAP FILM 0.22UF 5% 1.6KVDC RAD Kemet PHE450RD6220JR06L2 3 1 C204 CAP FILM 1200PF 5% 1.6KVDC RAD Panasonic ECW-H16122JV 4 5 C205 C212 C228 C233 C236 CAP CER 1UF 50V 10% X7R 0603 5 8 C206 C217 C218 C219 C225 C226 C230 C231 CAP CER 0.1UF 50V 10% X5R 0603 6 2 C207 C208 CAP ALUM 22UF 20% 35V RADIAL Panasonic EEA-GA1V220 7 1 C209 CAP ALUM 10UF 20% 50V RADIAL Panasonic ECEA1HKS100 8 1 C213 CAP CER 0.022UF 50V 10% X7R 0603 9 1 C214 CAP CER 1000PF 50V 10% X7R 0603 10 2 C215 C216 CAP CER 100PF 50V 5% C0G 0603 11 0 C220 NC 12 2 C221 C222 CAP CER 10000PF 50V 10% X7R 0603 13 2 C223 C224 CAP ALUM 680UF 20% 35V RADIAL Panasonic EEU-HD1V681 14 1 C227 CAP ALUM 100UF 20% 35V RADIAL Nichicon UPB1V101MPD 15 1 C229 CAP ALUM 220UF 20% 35V RADIAL Panasonic EEU-EB1V221 16 1 C232 CAP ALUM 47UF 20% 35V RADIAL Panasonic EEA-GA1V470 17 1 C234 CAP CER 100PF 100V 5% NP0 1206 18 1 C235 CAP CER 33PF 100V 5% NP0 1206 19 1 C237 NC 20 1 C238 CAP CER 0.1UF 50V X7R 1206 21 2 CON201 CON202 Connector TE Connectivity63849-1 22 1 CON207 CONN HEADER 6POS .100 VERT TIN Molex 22-27-2061 23 1 CON208 CONN HEADER 4POS .100 VERT TIN Molex 22-27-2041 24 2 D201 D202 DIODE FAST RECOVERY 1KV 1A SMA Diodes RS1M-13-F 25 5 D203 D205 D206 D207 DIODE GEN PURP 100V 300MA SOD123Diodes 1N4148W-7-F 26 1 D204 DIODE GEN PURP 200V 1.5A SMA STM STTH1R02A 27 1 D208 DIODE SCHOTTKY 100V 30A TO263AB Vishay VB30100S-E3/8W 28 1 D209 DIODE SCHOTTKY 100V 3A SMB STM STPS3H100U 29 1 D210 NC 30 1 L201 3.5uH 9.25A .008Ohm Wurth 744771003 31 1 L203 2.2 uH 20 % 2 A Coilcraft PFL4517-222ME 32 1 Q202 TRANS NPN DARL 1200V 0.1A TO220 STM STP03D200 33 1 Q203 TRANS NPN 40V 0.6A SOT23 MMBT2222A 34 2 Q204 Q206 TRANS NPN 100V 5.1A NXP PBSS306NZ 35 1 Q207 CREE C2M1000170J 36 6 R201 R202 R203 R204 R205 R206 RES SMD 1.5M OHM 1% 1/4W 1206 37 8 R207 R208 R209 R210 R211 R212 R213 R214 RES SMD 51K OHM 1% 1/4W 1206 38 3 R215 R216 R217 RES SMD 220K OHM 1% 1W 2512 39 3 R219 R248 R249 RES SMD 100 OHM 1% 1W 2512 40 2 R220 R221 RES SMD 1.3 OHM 1% 1W 2512 41 1 R222 RES SMD 10 OHM 1% 1/4W 1206 42 1 R223 RES SMD 0.0 OHM 1/4W 1206 43 3 R224 R245 R246 RES SMD 10K OHM 1% 1/4W 1206 44 1 R225 RES SMD 1 OHM 1% 1/4W 1206 45 1 R226 RES SMD 51 OHM 1% 1/4W 1206 46 3 R228 R232 R239 RES SMD 10K OHM 1% 1/8W 0603 47 1 R229 RES SMD 11K OHM 1% 1/8W 0603 48 2 R230 R233 RES SMD 0.0 OHM 1/8W 0603 49 1 R231 RES SMD 2.2K OHM 1% 1/8W 0603 50 0 R234 R218 NC 51 1 R235 RES SMD 2.4K OHM 1% 1/8W 0603 52 1 R236 RES SMD 5.6K OHM 1% 1/8W 0603 53 1 R237 RES SMD 1K OHM 1% 1/8W 0603 54 1 R238 RES SMD 39K OHM 1% 1/8W 0603 55 1 R240 RES SMD 33K OHM 1% 1/8W 0603 56 1 R241 RES SMD 36 OHM 1% 1/4W 1206 57 1 R242 RES SMD 510K OHM 1% 1/10W 0603 58 1 R243 RES SMD 4.7K OHM 1% 1/8W 0603 59 1 R244 RES SMD 1K OHM 1% 1/4W 1206 60 1 T201 wurth 750342480 NP1538 01 61 1 U201 IC PWM BOOST FLYBACK CM 8SOIC TI UC2844D8TR 62 1 U202 OPTOISOLATOR 5KV TRANSISTOR 4SMDFairchild FOD817ASD 63 1 U203 IC VREF SHUNT ADJ SOT23-3 TI TL431AIDBZR 64 1 YC200 CAP CER 1000PF 760VAC Y5U RADIAL Vishay VY1102M35Y5UQ63V0 65 1 ZD202 DIODE ZENER 20V 500MW SOD123 Diodes BZT52C20-7-F 66 1 ZD203 DIODE ZENER 13V 500MW SOD123 Diodes BZT52C13-7-F 67 1 ZD204 DIODE ZENER 2V 500MW SOD123 Diodes BZT52C2V0-7-F P/N: CRD-060DD17P-2

CPWR-AN15, Rev -, 03-2016 Auxiliary Power Supply board for 7LD2PAK This document is provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at www.cree.com/power. For warranty information, please contact Cree Sales at PowerSales@cree.com. Full Schematic: Figure 16 Complete fly-back evaluation board schematic.