KIT8020-CRD-5FF0917P-2 - CREE - Datasheet.Directory

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

KIT8020-CRD-5FF0917P-2

Evaluation Board for Cree’s SiC MOSFET in a TO-247-4 Package

Application Note

CPWR-AN20, Rev-

Cree Power Applications

This document is prepared as an application note to install and operate Cree evaluation hardware.

All parts of this application note are provided in English, and the Cautions are provided in English, Mandarin, and

Japanese. If the end user of this board is not fluent in any of these languages, it is your responsibility to ensure that

they understand the terms and conditions described in this document, including without limitation the hazards of and

safe operating conditions for this board.

本文件中的所有内容均以英文书写，“注意”部分的内容以英文、中文和日语书写。若本板子的

终端用户不熟悉上述任何一种语言，则您应当确保该终端客户能够理解本文件中的条款与条件，

包括且不限于本板子的危险以及安全操作条件。

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

1

当書類のすべての内容は英語で書きます。「注意点」の内容は英語、中国語、また日本語で書

きます。当ボードの端末使用者は上記の言語が一つでもわからないなら、当端末使用者は当書

類の条約と条件が理解できるのを確保すべきです。そして、当ボードの危険や安全に使用する

条件を含み、また限りません。

Note: This Cree-designed evaluation hardware for Cree components is meant to be used as an

evaluation tool in a lab setting and to be handled and operated by highly qualified technicians or

engineers. The hardware is not designed to meet any particular safety standards and the tool is

not a production qualified assembly.

CAUTION

PLEASE CAREFULLY REVIEW THE FOLLOWING PAGE, AS IT CONTAINS

IMPORTANT INFORMATION REGARDING THE HAZARDS AND SAFE OPERATING

REQUIREMENTS RELATED TO THE HANDLING AND USE OF THIS BOARD.

警告

请认真阅读以下内容，因为其中包含了处理和使用本板子有关的危险和安全操作要求方面

的重要信息

。

警告

ボードの使用、危険の対応、そして安全に操作する要求などの大切な情報を含むの

で、以下の内容をよく読んでください。

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

2

CAUTION

DO NOT TOUCH THE BOARD WHEN IT IS ENERGIZED AND ALLOW THE BULK

CAPACITORS TO COMPLETELY DISCHARGE PRIOR TO HANDLING THE BOARD.

THERE CAN BE VERY HIGH VOLTAGES PRESENT ON THIS EVALUATION BOARD

WHEN CONNECTED TO AN ELECTRICAL SOURCE, AND SOME COMPONENTS ON

THIS BOARD CAN REACH TEMPERATURES ABOVE 50˚ CELSIUS. FURTHER,

THESE CONDITIONS WILL CONTINUE FOR A SHORT TIME AFTER THE

ELECTRICAL SOURCE IS DISCONNECTED UNTIL THE BULK CAPACITORS ARE

FULLY DISCHARGED.

Please ensure that appropriate safety procedures are followed when operating this

board, as any of the following can occur if you handle or use this board without

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 board. It is not necessary

for you to touch the board while it is energized. All test and measurement probes or

attachments must be attached before the board is energized. You must never leave this

board unattended or handle it when energized, and you must always ensure that all bulk

capacitors have completely discharged prior to handling the board. Do not change the

devices to be tested until the board is disconnected from the electrical source and the

bulk capacitors have fully discharged.

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

3

警告

请勿在通电情况下接触板子，在处理板子前应使大容量电容器完全释放电力。接通电源后

，该评估板上可能存在非常高的电压，板子上一些组件的温度可能超过50 摄氏度。此外

，移除电源后，上述情况可能会短暂持续，直至大容量电容器完全释放电量。

操作板子时应确保遵守正确的安全规程，否则可能会出现下列危险：

● 死亡

● 严重伤害

● 触电

● 电击

● 电灼伤

● 严重的热烧伤

请在操作本板子前完整阅读本文件。通电时不必接触板子。在为板子通电前必须连接所有

测试与测量探针或附件。通电时，禁止使板子处于无人看护状态，或操作板子。必须确保

在操作板子前，大容量电容器释放了所有电量。只有在切断板子电源，且大容量电容器完

全放电后，才可更换待测试器件

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

4

警告

通電している時、ボードに接触するのは禁止です。ボードを処分する前に、大容量のコンデン

サーで電力を完全に釈放すべきです。通電してから、ボードにひどく高い電圧が存在している

可能性があります。ボードのモジュールの温度は 50 度以上になるかもしれません。また、電源

を切った後、上記の状況がしばらく持続する可能性がありますので、大容量のコンデンサーで

電力を完全に釈放するまで待ってください。

ボードを操作するとき、正確な安全ルールを守るのを確保すべきです。さもないと、以下の危

険がある可能性があります:

● 死亡

● 重症

● 感電

● 電撃

● 電気の火傷

● 厳しい火傷

当ボードを操作する前に、完全に当書類をよく読んでください。通電している時にボードに接

触する必要がありません。通電する前に必ずすべての試験用のプローブあるいはアクセサリー

をつないでください。通電している時に無人監視やボードを操作するのは禁止です。ボードを

操作する前に、大容量のコンデンサーで電力を完全に釈放するのを必ず確保してください。ボ

ードの電源を切った後、また大容量のコンデンサーで電力を完全に釈放した後、試験設備を取

り換えることができます。

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

5

Table of Contents

1. Introduction ............................................................................................................................................ 6

2. Comparison between Cree’s C3M and C2M SiC MOSFETs..................................................................... 7

3. Package Contents of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board ............................................. 7

4. Overview of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board ........................................................... 8

5. Example Topologies .............................................................................................................................. 10

6. Terminals and Connectors .................................................................................................................... 12

7. Cooling .................................................................................................................................................. 15

8. Test Point Locations ............................................................................................................................. 17

9. Example Application: Double Pulse Measurements ............................................................................ 18

10. PCB Layout Drawings ............................................................................................................................ 20

11. Schematic ............................................................................................................................................. 23

12. Bill of Materials ..................................................................................................................................... 24

13. Revision History .................................................................................................................................... 25

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

6

1. Introduction

The purpose of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board is to demonstrate high-speed

switching performance of Cree’s 3rd Generation (C3M) silicon carbide (SiC) Metal Oxide

Semiconductor Field-Effect Transistor (MOSFET) in a TO-247-4 package. Cree’s new TO-247-4

package provides a separate Kelvin source pin for gate drive signal return which reduces gate

ringing and provides clean gate signal. Cree’s KIT8020-CRD-5FF0917P-2 evaluation board (as

shown in Figure 1) comes in the configuration of a basic half bridge circuit with two Cree SiC

MOSFETs (P/N: C3M0075120K). This evaluation board can be configured into synchronous boost,

synchronous buck, inverter and other common power conversion topologies. Moreover, this

evaluation board is designed to allow a user to:

 Analyze a printed circuit board (PCB) layout example for driving Cree’s generation 3 SiC

MOSFET in a newly developed TO-247-4 package.

 Evaluate the performance of a Cree generation 3 SiC MOSFET in a TO-247-4 package

during switching events and steady state operation.

 Characterize Turn ON (EON) and Turn OFF (EOFF) losses.

 Evaluate the effects of different gate resistor (Rg) values, uni-polar versus bipolar gate

drives, various thermal interface materials and cooling methods.

 Measure double pulsed clamped inductive switching data.

Figure 1. Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

7

2. Comparison between Cree’s C3M and C2M SiC MOSFETs

The main difference between Cree’s generation 3 (C3M) and generation 2 (C2M) SiC MOSFET is

the gate to source voltage (VGS) requirements. As shown in Figure 2 and Figure 3, operational

values of VGS for C3M are -4V/+15V while operational values of VGS for C2M are -5V/+20V. This

reduction in VGS requirements lowers the overall power losses in Cree’s C3M SiC MOSFET.

Figure 2. VGS requirements of Cree’s C2M MOSFET Figure 3. VGS requirements of Cree’s C3M MOSFET

VGS REQUIREMENTS C2M MOSFET C3M MOSFET

Operational VGS -5V/+20V -4V/+15V

Maximum VGS -10V/+25V -8V/19V

Safe Operating VGS 0V/+18V 0V/+15V

Table 1. Comparison of Cree’s C2M MOSFET and Cree’s C3M MOSFET on the basis of VGS Requirements

3. Package Contents of Cree’s KIT8020-CRD-5FF0917P-2

Evaluation Board

ITEM # QTY DESCRIPTION MANUFACTURER Part Number

1 1 CRD-5FF0917P TO247-4L Eval Board Assembly CRD-5FF0917P

2 2 High force clip Aavid Thermalloy MAX03-HNG

3 1 Heat sink extrusion, custom length (70mm) Aavid Thermalloy 78060

4 2 MOSFET, 1200V, 75mohm Cree C3M0075120K

5 2 Kapton Thermal Interface 22mm x 29mm Fisher Elektronik KAP 1 P

6 4 Standoff, ¼” Hex Size, 2” Length, 6-32 Thread McMaster-Carr 92745A349

7 2 Spacer,¼”OD,5/32”, un-threaded Al #6 screw McMaster-Carr 92510A031

8 4 Nylon Hex Nut, 6-32 Thread Size McMaster-Carr 94812A300

9 2 Phillips Screw,M3x0.5mm Thread,10mm Long McMaster-Carr 92005A120

10 1 Shorting strip (1/4” length) McMaster-Carr 9053K21

11 2 Steel split washer Lock Washer for M3 Screw Size,

3.4mm ID, 6.2mm OD McMaster-Carr 91202A222

Table 2. Package Contents of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

8

4. Overview of Cree’s KIT8020-CRD-5FF0917P-2 evaluation

board

The physical dimensions of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board when fully

assembled are 133mm x 88mm x 101mm (as shown in Figure 4). Cree’s KIT8020-CRD-5FF0917P-

2 evaluation board package includes the PCB, two Cree SiC 1200V MOSFETs (P/N: C3M0075120K),

a heatsink (including mounting clips), a thermal pad and various hardware components.

Figure 4. Physical dimensions of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

9

A general block diagram of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board is shown in Figure

5. Besides the two Cree’s C3M0075120K SiC MOSFETs (Q1 and Q2) in a half bridge configuration,

there are two onboard isolated gate driver circuits which are used to drive both Q1 and Q2, there

are four power connectors (CON1, CON2, CON3, and CON4) for connecting to the +DC link, -DC

link, and the midpoint, and there is also a 10-pin ribbon cable connector (J10) onboard that

carries the logic power and gate drive control signals.

Gate

Drive

J10

Q1

Q2

CON1

CON2

CON3,

CON4

Figure 5. Block Diagram of Cree KIT8020-CRD-5FF0917P-2 evaluation board

Each gate drive circuit consists of an opto-coupler based isolated gate driver chip from Silicon

Laboratories Inc. (P/N: SI8261BCD) and a 2W isolated DC/DC converter from Murata

Manufacturing Co. Ltd. (P/N: MEJ2D1209SC). The Silicon Laboratories chip provides 5000V of

isolation between the low voltage control side and the high voltage drive side. Each DC/DC

converter is sourced with a +12V input. Through a series of jumpers, JM1-JM4, (as shown in

Figure 6), each gate driver can be configured as a low cost uni-polar (+15V/0V) gate driver or as

a high performance bi-polar gate driver (+15V/-3V). The DC/DC converter provides 5.2 KV

maximum isolation for 60 seconds.

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

10

Figure 6. Jumpers (JM1-JM4) to configure gate drivers of Cree’s KIT8020-CRD-5FF0917P-2

evaluation board

Table 3 shows the configuration of jumpers (JM1-JM4) based on desired gate drive output levels

identified in the table.

Table 3. Configuration of Jumpers (JM1-JM4) based on gate drive output levels

5. Example Topologies

The reason for choosing a half bridge circuit for Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

is because of its ability to be a constituent portion of various power conversion topologies. Two

example configurations are listed below, with the components shown outside of the dotted box.

Cree’s KIT8020-CRD-5FF0917P-2 evaluation board can also be configured in various other

topologies (such as a non-synchronous buck topology) with modifications, and with the addition

of multiple evaluation boards one can prototype a H-bridge or a 6-pak based power conversion

topology.

+15V/-3V +15V/0V

JM1, JM3 SHORT OPEN

JM2, JM4 OPEN SHORT

Gate Drive Output

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

11

A. Synchronous Buck Converter

 Step down voltage

 MOSFET is used instead

of flyback diode

 Connect inductor (L) to

CON2 as output

 CON1 is input

 CON2 is output

 CON3, CON4 is ground

Figure 7. Cree’s KIT8020-CRD-5FF0917P-2 evaluation board configured as synchronous buck converter

B. Synchronous Boost Converter

 Step up voltage

 MOSFET is used instead of

flyback diode

 Connect inductor L to

CON2

 CON1 is output

 CON2 is input

 CON3, CON4 is ground

Figure 8. Cree’s KIT8020-CRD-5FF0917P-2 evaluation board configured as synchronous boost converter

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

12

6. Terminals and Connectors

CAUTION

***HIGH VOLTAGE RISK***

THERE CAN BE VERY HIGH VOLTAGES PRESENT ON THIS BOARD WHEN CONNECTED TO AN

ELECTRICAL SOURCE, AND SOME COMPONENTS ON THIS BOARD CAN REACH TEMPERATURES

ABOVE 50° CELSIUS. FURTHER, THESE CONDITIONS WILL CONTINUE AFTER THE ELECTRCIAL

SOURCE IS DISCONNECTED UNTIL THE BULK CAPACITORS ARE FULLY DISCHARGED. DO NOT TOUCH

THE BOARD WHEN IT IS ENERGIZED AND ALLOW THE BULK CAPACITORS TO COMPLETELY

DISCHARGE PRIOR TO HANDLING THE BOARD.

The connectors on the board have very high voltage levels present when the board is connected

to an electrical source, and thereafter until the bulk capacitors are fully discharged. Please ensure

that appropriate safety procedures are followed when working with these connectors as serious

injury, including death by electrocution or serious injury by electrical shock or electrical burns, can

occur if you do not follow proper safety precautions. When devices are being attached for testing,

the board must be disconnected from the electrical source and all bulk capacitors must be fully

discharged. After use the board should immediately be disconnected from the electrical source.

After disconnection any stored up charge in the bulk capacitors will continue to charge the

connectors. Therefore, you must always ensure that all bulk capacitors have completely

discharged prior to handling the board.

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

13

警告

***高压危险***

接通电源后，该评估板上可能存在非常高的电压，板子上㇐些组件的温度可能超过 50 摄

氏度。此外，移除电源后，上述情况可能会短暂持续，直至大容量电容器完全释放电量。

通电时禁止触摸板子，应在大容量电容器完全释放电量后，再触摸板子。

板子上的连接器在充电时以及充电后都具有非常高的电压，直至大容量电容器完全释放电

量。请确保在操作板子时已经遵守了正确的安全流程，否则可能会造成严重伤害，包括触

电死亡、电击伤害或电灼伤。连接器件进行测试时，必须切断板子电源，且大容量电容器

必须释放了所有电量。使用后应立即切断板子电源。切断电源后，大容量电容器中存储的

电量会继续输入至连接器中。因此，必须始终在操作板子前，确保大容量电容器已完全释

放电量。

警告

***高圧危険***

通電してから、ボードにひどく高い電圧が存在している可能性があります。ボードの

モジュールの温度は 50 度以上になるかもしれません。また、電源を切った後、上記の

状況がしばらく持続する可能性がありますので、大容量のコンデンサーで電力を完全

に釈放するまで待ってください。通電している時にボードに接触するのは禁止で

す。大容量のコンデンサーで電力をまだ完全に釈放していない時、ボードに接触しな

いでください。ボードのコネクターは充電中また充電した後、ひどく高い電圧が存在

しているので、大容量のコンデンサーで電力を完全に釈放するまで待ってください。ボ

ードを操作している時、正確な安全ルールを守っているのを確保してください。さもな

ければ、感電、電撃、厳しい火傷などの死傷が出る可能性があります。設備をつないで

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

14

試験する時、必ずボードの電源を切ってください。また、大容量のコンデンサーで電力

を完全に釈放してください。使用後、すぐにボードの電源を切ってください。電源を切

った後、大容量のコンデンサーに貯蓄している電量はコネクターに持続的に入るので、

ボードを操作する前に、必ず大容量のコンデンサーの電力を完全に釈放するのを確保し

てください。

Terminals CON1, CON2, CON3 and CON4 of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

are the power terminals (as shown in Figure 9) and their definitions vary based on topology. An

Amphenol FCI connector (J10) (P/N # 71918-110LF) carries all of the control and logic signals. The

definition of J10 for each pin is shown in Table 4.

Figure 9. Top view of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board showing locations of various

connectors

1

COMMON

2

POWER IN (+VCC)

3

HIGH SIDE

Pulse Width Modulation (PWM)

RETURN

4

HIGH SIDE PWM INPUT,

5V=SWITCH ON, 0V=SWITCH OFF

5

COMMON

6

COMMON

7

LOW SIDE PWM RETURN

8

LOW SIDE PWM INPUT, 5V=SWITCH ON, 0V=SWITCH OFF

9

COMMON

10

COMMON

Table 4. Pin definitions for input controls connector J10

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

15

7. Cooling

警告

通电时不必接触板子。连接器件进行测试时，必须切断板子电源，且大容量电容器必须释

放完所有电量。

板子上一些组件的温度可能超过 50 摄氏度。移除电源后，上述情况可能会短暂持续，直

至大容量电容器完全释放电量。通电时禁止触摸板子，应在大容量电容器完全释放电量

后，再操作板子。

CAUTION

IT IS NOT NECESSARY FOR YOU TO TOUCH THE BOARD WHILE IT IS ENERGIZED. WHEN

DEVICES ARE BEING ATTACHED FOR TESTING, THE BOARD MUST BE DISCONNECTED FROM

THE ELECTRICAL SOURCE AND ALL BULK CAPACITORS MUST BE FULLY DISCHARGED.

SOME COMPONENTS ON THE BOARD REACH TEMPERATURES ABOVE 50˚ CELSIUS. THESE

CONDITIONS WILL CONTINUE AFTER THE ELECTRICAL SOURCE IS DISCONNECTED UNTIL THE

BULK CAPACITORS ARE FULLY DISCHARGED. DO NOT TOUCH THE BOARD WHEN IT IS

ENERGIZED AND ALLOW THE BULK CAPACITORS TO COMPLETELY DISCHARGE PRIOR TO

HANDLING THE BOARD.

PLEASE ENSURE THAT APPROPRIATE SAFETY PROCEDURES ARE FOLLOWED WHEN

OPERATING THIS BOARD AS SERIOUS INJURY, INCLUDING DEATH BY ELECTROCUTION OR

SERIOUS INJURY BY ELECTRICAL SHOCK OR ELECTRICAL BURNS, CAN OCCUR IF YOU DO NOT

FOLLOW PROPER SAFETY PRECAUTIONS.

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

16

请确保在操作板子时已经遵守了正确的安全规程，否则可能会造成严重伤害，包括触电死

亡、电击伤害、或电灼伤。

警告

通電している時にボードに接触する必要がありません。設備をつないで試験する

時、必ずボードの電源を切ってください。また、大容量のコンデンサーで電力を

完全に釈放してください。

ボードのモジュールの温度は 50 度以上になるかもしれません。電源を切った

後、上記の状況がしばらく持続する可能性がありますので、大容量のコンデンサ

ーで電力を完全に釈放するまで待ってください。通電している時にボードに接触

するのは禁止です。大容量のコンデンサーで電力をまだ完全に釈放していない

時、ボードを操作しないでください。

ボードを操作している時、正確な安全ルールを守っているのを確保してくださ

い。さもなければ、感電、電撃、厳しい火傷などの死傷が出る可能性がありま

す。

Cree’s KIT8020-CRD-5FF0917P-2 evaluation board has several integrated features designed for

effective thermal management. Since the heatsink is common to both MOSFETs, it needs to be

isolated from each MOSFET tab. This isolation is achieved with the help of a high performance

Kapton thermal interface pad manufactured by Fisher Elektronik (P/N: KAP1P). A rendering of

the assembly is shown below in Figure 10.

Figure 10. Cree’s KIT8020-CRD-5FF0917P-2 evaluation board assembly rendering

Thermal

Interface

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

17

8. Test Point Locations

The test points of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board are highlighted in Figure 11.

A standard .100” pin header should be soldered on all the major nodes in order to connect

oscilloscope probes properly.

Figure 11. Test Point Locations of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

Figure 12. 0.100” pin headers installed Figure 13. Oscilloscope probe attached

Figure 12 shows an example in which a pair of 0.100” pin headers are soldered on the test

points13 & 14 of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board. With the help of these

headers, an oscilloscope probe can monitor gate to source voltage (VGS) of the lower MOSFET

(as shown in Figure 13).

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

18

9. Example Application: Double Pulse Measurements

Cree’s KIT8020-CRD-5FF0917P-2 evaluation board will allow the user to make double pulsed

clamped inductive switching measurements. Figure 14 is showing an arrangement in which Cree’s

KIT8020-CRD-5FF0917P-2 evaluation board should be connected in order to make the switching

measurements.

Figure 14. Clamped Inductive Switching Measurement Circuit

A precision current measuring device will be required in order to measure current through Q1.

There is a connection point (J9) on the board that can used to view current on an oscilloscope.

T&M Research Products Inc. makes a viewing resistor (P/N # SDN-414-01) (as shown in Figure 15)

that has a resistance of 10 mΩ (which typically works well with most of the oscilloscopes with

probe attenuation set to x100), that is sold separately, and that may be used with Cree’s KIT8020-

CRD-5FF0917P-2 evaluation board. If a different value of resistor is chosen, then the user should

make sure that the resistor has minimal insertion inductance. If current does not need to be

viewed, then the ¼” shorting strip (which comes with Cree’s KIT8020-CRD-5FF0917P-2 evaluation

board) should be soldered into J9.

Note: Either a current measuring device or the shorting strip must be soldered into place (J9)

before operating this board.

Figure 15. SDN-414-01 current viewing resistor (sold separately)

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The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

19

Due to the fast switching speeds associated with Cree SiC MOSFETs, the following steps must be

followed closely to yield the most accurate results possible.

 Scope probes measuring drain to source voltage (VDS) and gate to source voltage (VGS) must have

minimal loop area between the signal and the ground.

 The oscilloscope probes measuring VDS and drain to source current (IDS) must be de-skewed.

 Bulk capacitance may need to be added to the board to minimize DC link voltage sag during two-

pulse measurements. The amount will vary based on desired current level and the pulse width.

Figure 16 shows a two-pulse experimental setup. Figure 17 shows the measured waveforms.

Green waveform shows the output current, pink waveform shows the gate signal and yellow

waveform shows the output voltage.

Figure 16. Two-pulse setup Figure 17. Waveforms measured

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

20

10. PCB Layout Drawings

Figure 18. Top copper layer of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

Figure 19. Top Silk Screen Layer of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

21

Figure 20. Inner Copper Layer 1 of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

Figure 21. Inner Copper Layer 2 of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

22

Figure 22. Bottom Copper Layer of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

Figure 23. Bottom Silk Screen Layer of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board PCB

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

23

11. Schematic

Figure 24. Schematic of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

24

12. Bill of Materials

Table 5. Bill of Materials of Cree’s KIT8020-CRD-5FF0917P-2 evaluation board

Item Qty

Per

Reference Designator Description Manufacturer

Name

Manufacturer's P/N

1 4 CON1-4 TERM PC SNAPIN VRT 10-32 W/SCREW Keystone 8174

2 6 C1,C3,C5,C23,C25 C27 1µF ±10% 50V Ceramic Capacitor X7R Taiyo Yuden UMK107AB7105KA-T

3 4 C2,C6,C24,C28 10µF ±10% 35V Ceramic Capacitor X7R Taiyo Yuden GMK316AB7106KL-TR

4 4 C4,C21,C22,C26 4.7µF ±10% 35V Ceramic Capacitor X5R Murata GRM188R6YA475KE15D

5 1 C7 0.15µF ±20% Film Capacitor 300V 1500V Epcos B32023A3154M

6 2 C8,C41 CAP FILM 0.47UF 5% 1.6KVDC RAD Kemet R76TR34704030J

7 4 C15,C17,C31,C33 0.10µF ±10% 50V Ceramic Capacitor X7R Samsung CL10B104KB8SFNC

8 4 C16,C18,C32,C34 10000pF ±10% 50V Ceramic Capacitor X7R Kemet C0603C103K5RACTU

9 2 C19,C35 1000pF ±10% 50V Ceramic Capacitor X7R Samsung CL31B102KBCNNNC

10 2 C20,C36 100pF ±10% 2000V Ceramic Capacitor X7R Kemet C1210C101KGRACTU

11 2 C39,C40 4.7µF ±10% 50V Ceramic Capacitor X7R Taiyo Yuden UMK316AB7475KL-T

12 2 D1,D2 Diode Schottky 40V 1A Surface Mount SOD-

123

Diodes Inc. 1N5819HW-7-F

13 1 D17 LED RGB DIFFUSED 4PLCC SMD Cree CLVBA-FKA-

CAEDH8BBB7A363

14 2 JM1, JM3 RES SMD 0.0 OHM JUMPER 1/8W 0805 Panasonic ERJ-6GEY0R00V

15 1 J10 10 Positions Header, Shrouded Connector

0.100"

Amphenol FCI 71918-110LF

16 1 L1 common mode choke TDK ACM4520-142-2P-T000

17 4 R1,R2,R17,R18 RES SMD 5.1 OHM 5% 1/8W 0805 Yageo RC0805JR-075R1L

18 8 R3,R4,R5,R6,R7

R9,R42,R43

RES SMD 1M OHM 1% 1/4W 1206 Panasonic ERJ-8ENF1004V

19 2 R15,R25 RES SMD 8.2 OHM 5% 1/3W 1206 Rhom ESR18EZPJ8R2

20 2 R14,R24 RES SMD 10 OHM 1% 2W 2512 Bourns CRM2512-FX-10R0ELF

21 2 R16,R26 RES SMD 5.1K OHM 1% 1/4W 1206 Panasonic ERJ-8ENF5101V

22 4 R27,R28,R31,R32 RES SMD 91 OHM 1% 1/10W 0603 Yageo RC0603FR-0791RL

23 2 R29,R30, RES SMD 2K OHM 1% 1/4W 1206 Panasonic ERJ-8ENF2001V

24 2 R40,R41 RES SMD 0.0 OHM JUMPER Panasonic ERJ-8GEY0R00V

25 1 R39 RES SMD 9.1K OHM 1% 1/8W 0805 Rhom MCR10ERTF9101

27 2 U1,U2 DGTL ISO 5KV GATE DRIVER 6SDIP Silicon Labs SI8261BCD-C-ISR

28 2 U3,U4 Isolated Module DC DC Converter 2 O/P 9V -

9V 111mA, 111mA 10.8V - 13.2V Input

Murata MEJ2D1209SC

29 2 ZD1,ZD4 DIODE ZENER 20V 500MW SOD123 ON Semi MMSZ20T1G

30 2 ZD2,ZD5 DIODE ZENER 3.3V 500MW SOD123 ON Semi MMSZ5226BT1G

31 1

Bare Board

CRD-5FF0917P

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

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13. Revision History

Date

Revision

Changes

02

/

09

/201

8

Rev

-

1

st

I

ssue

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

26

IMPORTANT NOTES

Purposes and Use

Cree, Inc. (on behalf of itself and its affiliates, “Cree”) reserves the right in its sole discretion to

make corrections, enhancements, improvements, or other changes to the board or to

discontinue the board.

THE BOARD DESCRIBED IS AN ENGINEERING TOOL INTENDED SOLELY FOR LABORATORY USE BY

HIGHLY QUALIFIED AND EXPERIENCED ELECTRICAL ENGINEERS TO EVALUATE THE

PERFORMANCE OF CREE POWER SWITCHING DEVICES. THE BOARD SHOULD NOT BE USED AS

ALL OR PART OF A FINISHED PRODUCT. THIS BOARD IS NOT SUITABLE FOR SALE TO OR USE BY

CONSUMERS AND CAN BE HIGHLY DANGEROUS IF NOT USED PROPERLY. THIS BOARD IS NOT

DESIGNED OR INTENDED TO BE INCORPORATED INTO ANY OTHER PRODUCT FOR RESALE. THE

USER SHOULD CAREFULLY REVIEW THE DOCUMENT TO WHICH THESE NOTIFICATIONS ARE

ATTACHED AND OTHER WRITTEN USER DOCUMENTATION THAT MAY BE PROVIDED BY CREE

(TOGETHER, THE “DOCUMENTATION”) PRIOR TO USE. USE OF THIS BOARD IS AT THE USER’S

SOLE RISK.

Operation of Board

It is important to operate the board within Cree’s recommended specifications and

environmental considerations as described in the Documentation. Exceeding specified ratings

(such as input and output voltage, current, power, or environmental ranges) may cause property

damage. If you have questions about these ratings, please contact Cree at sic_power@cree.com

prior to connecting interface electronics (including input power and intended loads). Any loads

applied outside of a specified output range may result in adverse consequences, including

unintended or inaccurate evaluations or possible permanent damage to the board or its

interfaced electronics. Please consult the Documentation prior to connecting any load to the

board. If you have any questions about load specifications for the board, please contact Cree at

sic_power@cree.com for assistance.

Users should ensure that appropriate safety procedures are followed when working with the

board as serious injury, including death by electrocution or serious injury by electrical shock or

electrical burns can occur if you do not follow proper safety precautions. It is not necessary in

proper operation for the user to touch the board while it is energized. When devices are being

attached to the board for testing, the board must be disconnected from the electrical source and

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

27

any bulk capacitors must be fully discharged. When the board is connected to an electrical source

and for a short time thereafter until board components are fully discharged, some board

components will be electrically charged and/or have temperatures greater than 50˚ Celsius.

These components may include bulk capacitors, connectors, linear regulators, switching

transistors, heatsinks, resistors and SiC diodes that can be identified using board schematic.

Users should contact Cree at sic_power@cree.com for assistance if a board schematic is not

included in the Documentation or if users have questions about a board’s components. When

operating the board, users should be aware that these components will be hot and could

electrocute or electrically shock the user. As with all electronic evaluation tools, only qualified

personnel knowledgeable in handling electronic performance evaluation, measurement, and

diagnostic tools should use the board.

User Responsibility for Safe Handling and Compliance with Laws

Users should read the Documentation and, specifically, the various hazard descriptions and

warnings contained in the Documentation, prior to handling the board. The Documentation

contains important safety information about voltages and temperatures.

Users assume all responsibility and liability for the proper and safe handling of the board. Users

are responsible for complying with all safety laws, rules, and regulations related to the use of the

board. Users are responsible for (1) establishing protections and safeguards to ensure that a

user’s use of the board will not result in any property damage, injury, or death, even if the board

should fail to perform as described, intended, or expected, and (2) ensuring the safety of any

activities to be conducted by the user or the user’s employees, affiliates, contractors,

representatives, agents, or designees in the use of the board. User questions regarding the safe

usage of the board should be directed to Cree at sic_power@cree.com .

In addition, users are responsible for:

● compliance with all internaonal, naonal, state, and local laws, rules, and regulaons that

apply to the handling or use of the board by a user or the user’s employees, affiliates, contractors,

representatives, agents, or designees.

● taking necessary measures, at the user’s expense, to correct radio interference if operaon of

the board causes interference with radio communications. The board may generate, use, and/or

radiate radio frequency energy, but it has not been tested for compliance within the limits of

CPWR-AN20, Rev -, 02-2018

The information in this document is subject to change without notice.

Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.

28

computing devices pursuant to Federal Communications Commission or Industry Canada rules,

which are designed to provide protection against radio frequency interference.

● compliance with applicable regulatory or safety compliance or cerﬁcaon standards that may

normally be associated with other products, such as those established by EU Directive

2011/65/EU of the European Parliament and of the Council on 8 June 2011 about the Restriction

of Use of Hazardous Substances (or the RoHS 2 Directive) and EU Directive 2002/96/EC on Waste

Electrical and Electronic Equipment (or WEEE). The board is not a finished product and therefore

may not meet such standards. Users are also responsible for properly disposing of a board’s

components and materials.

No Warranty

THE BOARD IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, INCLUDING BUT NOT

LIMITED TO ANY WARRANTY OF NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A

PARTICULAR PURPOSE, WHETHER EXPRESS OR IMPLIED. THERE IS NO REPRESENTATION THAT

OPERATION OF THIS BOARD WILL BE UNINTERRUPTED OR ERROR FREE.

Limitation of Liability

IN NO EVENT SHALL CREE BE LIABLE FOR ANY DAMAGES OF ANY KIND ARISING FROM USE OF

THE BOARD. CREE’S AGGREGATE LIABILITY IN DAMAGES OR OTHERWISE SHALL IN NO EVENT

EXCEED THE AMOUNT, IF ANY, RECEIVED BY CREE IN EXCHANGE FOR THE BOARD. IN NO EVENT

SHALL CREE BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, OR SPECIAL LOSS OR DAMAGES OF

ANY KIND, HOWEVER CAUSED, OR ANY PUNITIVE, EXEMPLARY, OR OTHER DAMAGES. NO

ACTION, REGARDLESS OF FORM, ARISING OUT OF OR IN ANY WAY CONNECTED WITH ANY

BOARD FURNISHED BY CREE MAY BE BROUGHT AGAINST CREE MORE THAN ONE (1) YEAR

AFTER THE CAUSE OF ACTION ACCRUED.

Indemnification

The board is not a standard consumer or commercial product. As a result, any indemnification

obligations imposed upon Cree by contract with respect to product safety, product liability, or

intellectual property infringement do not apply to the board.