Infineon XMC LED Current Control Explorer Kit Getting Started

Getting Started -

XMC™ LED Current

Control Explorer Kit

XMC Microcontrollers

Apr 2016

Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

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Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

3

Kit Overview (1/7)

Easy entry into smart LED lighting with XMC™ MCUs

› Low cost, flicker-free, smart and connected single channel LED driver concept

demonstrator

› 15W Single Channel CCM DC/DC Buck converter in peak-current control mode

› Software-based automatic adaptation to different input DC voltages and LED

forward voltages

› Isolated DALI Interface card

– DALI Software Stack available

Recommended LED System Overview

4

MAX DC Supply

V

IN

(Max)

I

LED

Peak I

AVERAGE

V

FORWARD

LED

30V 1A <800mA

≤V

IN

Kit Overview (2/7)

› XMC™ LED Current Control Explorer Kit

– XMC™ LED Current Control Explorer Card

– XMC1300 Boot Kit (XMC1302-AB)

– DALI PHY for XMC™ Boot Kits

XMC1300 Boot Kit

XMC™ LED Current Control

Explorer Card

DALI PHY for XMC™ Boot Kits

5

› XMC™ LED Current Control Explorer Card

Kit Overview (3/7)

Voltage Divider for

Comparator Reference

24V DC

Input Jack

0-30V DC

Input Jack

Output jack

to LED engine

Header

Connectors

6

BAS3010A-03W (Schottky Diode)

BSS306N (OptiMOS™)

Kit Overview (4/7)

7

› XMC1300 Boot Kit

Kit Overview (5/7)

On-board COM

and Segger

J-Link debugger

XMC1302-AB

Pin headers

Micro USB

Status Indicator LEDs

Potentiometer

Edge Connector

8

› DALI PHY for XMC™ Boot Kits

Kit Overview (6/7)

SAMTEC

Connector to

Boot Kit

WAGO Connector

to DALI Bus

Isolated DALI

Interface Circuit

9

Kit Overview (7/7)

10

Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

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› Hardware block diagram of kit

Hardware Overview (1/2)

12

Hardware Overview (2/2)

› Kit information

› Infineon parts utilized on Kit Nr. 1:

Infineon Parts

Order Number

XMC1302

Microcontroller

XMC1302T038X0200ABXUMA1

Schottky

Diode BAS3010A-03W

BAS3010A03WE6327HTSA1

Transistor BSS306N

BSS306NH6327XTSA1

Nr.

Kit

Name

Kit Description

Order Number

1

KIT_XMC1_LED_CC _EXP_001

XMC™ LED Current

Control Explorer Kit

KIT_XMC1_LED_CC _EXP_001

13

Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

14

Tooling Overview –

DAVE™ (1/5)

› Download DAVE™ installer package from:

http://www.infineon.com/dave

› Download and unzip the installer package

› Run *_Setup.exe file to install DAVE™ and Segger J-Link drivers

› After Installation, DAVE™ v4 can be started from desktop.

15

Tooling Overview –

DAVE™ (2/5)

› Check for DAVE™ updates

Help  Check for Updates

16

Tooling Overview –

DAVE™ (3/5)

› Install DAVE™ APPs and Device Descriptions

Help  Install DAVE™ APP/Example/Device Library

› Note: You may skip the above step if you are not using DAVE™

APPs

17

Tooling Overview –

DAVE™ (4/5)

› Select DAVE™ APPs Library Manager in the drop-down menu

› Select Library_DAVEApps and Library_DAVEDeviceDescriptions

(for XMC1300 Device) and click Next

18

Tooling Overview –

DAVE™ (5/5)

› Accept terms of the license agreements and click Finish

› DAVE™ APPs and DAVE™ device descriptions are installed

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Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

20

Getting Started

Setting up the Kit (1/4)

1. Plug the XMC™ LED Current Control Explorer Card onto the

XMC1300 Boot Kit

21

Getting Started

Setting up the Kit (2/4)

2. Connect the DALI PHY for XMC™ Boot Kits card to the

XMC1300 Boot Kit

22

Getting Started

Setting up the Kit (3/4)

3. Connect the LED light engine to the XMC™ LED Current Control

Explorer card via the orange connectors

23

Getting Started

Setting up the Kit (4/4)

4. Connect the kit to PC and power supply

From PC

24V DC Adapter

OR

0-30V DC Power

DBG LED turns

ON

24

Getting Started

Adjusting LED Brightness (1/3)

› Option 1: Via potentiometer with a screwdriver

25

Voltage is read by ADC, and then

SW changes density of the

modulation signal

Getting Started

Adjusting LED Brightness (2/3)

› Option 2: Via DALI communication

Connect to powered DALI

Bus and start sending commands from DALI

master

26

Getting Started

Adjusting LED Brightness (3/3)

› DALI commands supported based on 62386-102:2009

– Direct arc power command

– Indirect arc power control commands e.g. OFF, UP, DOWN etc.

– Query commands e.g. QUERY STATUS, QUERY ACTUAL LEVEL

etc.

– Special commands e.g. INITIALISE, RANDOMISE etc.

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Getting Started

Downloading the Kit Software (1/3)

› http://www.infineon.com/xmc-led-ccexp

› Click on the ‘Software & Tools’ tab

› Download the example project(s)

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Getting Started

Downloading the Kit Software (2/3)

› List of available projects

1. Basic-level: Introduction to possible implementations of

control loop for CCM Buck, with dimming via potentiometer

 XMCLib-based

• LED_CCEXP_A1_BCCU_ACMP_ERU_CCU4

• LED_CCEXP_A2_BCCU_ACMP_EXT_CCU4

• LED_CCEXP_A3_ACMP_BCCU_CCU8

 APP-based

• LED_CCEXP_B1_BCCU_ACMP_ERU_CCU4

• LED_CCEXP_B2_BCCU_ACMP_EXT_CCU4

• LED_CCEXP_B3_ACMP_BCCU_CCU8

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Getting Started

Downloading the Kit Software (3/3)

› List of available projects (continued)

2. Application-level: Fastest control loop for CCM Buck

implementation with dimming via potentiometer or DALI

 APP-based

• LED_CCEXP_C1_ACMP_BCCU_CCU8_DALICG (will be available soon)

• LED_CCEXP_C2_AUTOMATIC_RIPPLE_TUNING: with automatic current

ripple tuning according to input voltage and LED load to maintain LED

average current (Default pre-loaded code)

3. Customization: Basic project without dimming, for user to

adopt kit to their own LED engine (more instructions from

here)

 APP-based

• LED_CCEXP_D1_MANUAL_CALIB

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1. Open DAVE™

2. In DAVE™ workspace, import the

downloaded project:

– File  Import  Infineon 

DAVE Project

– Click Next

– Check “Select Archive File”

– Browse to the downloaded

project zip file

– Click Open

 Project name will appear under

Project List

– Click Finish

Getting Started

Programming the kit (1/3)

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Getting Started

Programming the kit (2/3)

› Build project

1. Click

2. Wait for Build to finish

› Download code

1. Ensure that the power to the XMC™ LED Current Control

Explorer card is turned OFF

2. Click

3. Switch to TASKING Debug view

4. Click to run code

› Turn ON the power to the XMC™ LED Current Control Explorer

card

› Adjust LED brightness

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Getting Started

Programming the kit (3/3)

› Observe the LED current waveform on an oscilloscope via a

current probe

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Getting Started

Software Information

› XMC™ LED Current Control Explorer Kit is preloaded with

LED_CCEXP_C2_AUTOMATIC_RIPPLE_TUNING

› Features of this software

– Safe to use with a wide range of LED engines and input voltage supply

– Automatically tunes current ripple to adopt to input voltage and LED load

– Not the best dimming performance and efficiency as the code serves to

cater to a wide range of LED engines and input voltage. Fine tuning of

software parameters and hardware may be required to achieve best

dimming performance and efficiency

– Average LED current ≈ 620mA

› All other software provided in the package are developed with MOLEX

180081-4250

– Average LED current = 700mA

– Forward voltage = 12.3V

› To manually adopt software to your LED engine, follow the instructions on

next slides

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Getting Started

Adopting SW to Your LED Engine (1/6)

1. Import LED_CCEXP_D1_MANUAL_CALIB code onto DAVE™

2. Compile and program the kit

3. Connect your LED engine to the kit

4. Power up the kit

Note: Ensure that the voltage supplied is the maximum expected

input voltage and sufficient to power the LED

5. Observe the LED current waveform on oscilloscope

a. Measure the LED current rise time

b. Measure the LED current fall time

c. Measure the time required for LED current to fall from peak

to reference value (620mA). We shall call this parameter the

Required OFF-time

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Getting Started

Adopting SW to Your LED Engine (2/6)

› Lets take for example, LED engine A:

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LED engine A

Rise time = 760ns Fall time = 2180ns

Required OFF-time = 480ns

LED Current Reference = 620 mA

Getting Started

Adopting SW to Your LED Engine (3/6)

6. Open the UI of GLOBAL_BCCU APP

7. Change the frequency of FCLK such that the bit-time is the

same as the LED current rise time or fall time, whichever is

longer

– This is to ensure the following criteria are met:

a. During an ON bit, there is enough time for the LED current to

reach the desired peak level

b. During an OFF bit, there is enough time for the LED current to

reach zero

37

Getting Started

Adopting SW to Your LED Engine (4/6)

› In the example of LED engine A, the fall time is longer

› Set FCLK such that Actual bit-time = 2180ns

› Can be calculated:

𝐹𝐶𝐿𝐾 =

1

𝑏𝑖𝑡 𝑡𝑖𝑚𝑒

× 4

𝑒. 𝑔. 𝐹𝐶𝐿𝐾 =

1

2180 × 10

−9

× 4

≈ 1.835𝑀𝐻𝑧

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Getting Started

Adopting SW to Your LED Engine (5/6)

8. Open the UI of PDM_DIMMED_LED_LAMP APP

9. Change the Generated OFF-time based on the value measured

previously

– This is to ensure just enough time for the LED current to drop

to just below the reference level i.e. minimum ripple size

– In the example of LED engine A, this is 480ns

– Considering a propagation delay of 100ns, we shall set the

OFF-time to (480-100 = 380ns)

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Getting Started

Adopting SW to Your LED Engine (6/6)

10. Re-generate code , compile and program the kit

11. Observe LED current waveform

You now have the optimized parameters to use your LED engine with the kit!

40

MOSFET switching

frequency

LED Current

Reference = 620 mA

Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

41

Resource Listing

› http://www.infineon.com/xmc-led-ccexp

› Documents

– Board User Manuals

– Product Brief

– Application Note

› Application examples (SW)

› Videos

42

Agenda

Kit Overview

Hardware Overview

Tooling Overview

Getting Started

Resource Listing

Support Material

1

2

3

4

5

6

43

› Product Briefs › Selection Guides › Application Brochures

› Presentations

› Press Releases, Ads

› Application Notes

› Technical Articles › Simulation Models

› Datasheets, MCDS Files

› PCB Design Data

› Technical Videos

› Product Information

Videos

› Forums

› Product Support

Support Material

Collaterals and

Brochures

Technical Material

Videos

Contact

› www.infineon.com/XMC

› Kits and Boards › DAVE

TM

› Software and Tool Ecosystem

› Infineon Media Center

› XMC Mediathek

› Infineon Forums

› Technical Assistance Center (TAC)

44

Glossary of Abbreviations

› ACMP Analog Comparator

› BCCU Brightness and Color Control Unit

› CCU4/8 Capture/Compare Unit 4/8

› DALI Digital Addressable Lighting Interface

› DAVE™ Free development IDE for XMC

› ERU Event Request Unit

› GPIO General Purpose Input/Output

› LED Light-emitting Diode

› PC Personal Computer

› PDM Pulse Density Modulation

› PHY Physical Layer

› PWM Pulse Width Modulation

› USIC Universal Serial Interface Channel

› VADC Versatile Analog Digital Converter

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The information given in this training materials is given as a hint for the implementation of the Infineon Technologies component only and

shall not be regarded as any description or warranty of a certain

functionality, condition or quality of the Infineon Technologies component.

Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind (including without limitation warranties of noninfringement of intellectual property rights of any third party) with respect to any and all information given in this training material.

Disclaimer