inductor heater (half bridge) demo board user manualthis inductor heater (half bridge) demo board...

Fujitsu Semiconductor Design(Chengdu) Co.,Ltd. User Manual

Inductor Heater (Half Bridge)

Demo Board

User Manual

Inductor Heater (Half Bridge) User Manual V1.0

Chapter 错误！使用“开始”选项卡将 Heading 1 应用于要在此处显示的文字。错误！使用“开始”选项卡将

Heading 1 应用于要在此处显示的文字。

MCU-AN- 500077-E-10 – Page 2

Revision History

Date Author Change of Records

2010-03-12 Kevin. Lin V1.1.0, First draft

2010-08-5 Kevin. Lin V1.1.0, add figures 2010-10-11 Kevin. Lin V1.1.1, modify the Figure 6.2

2010-11-17 Kevin. Lin V1.2.0, update the power level, Figure 6.2. add error code

This manual contains 26 pages.

© 2008 Fujitsu Microelectronics (Shanghai) Co., Ltd.

1. The products described in this manual and the specifications thereof may be changed without prior notice. To obtain up-to-date information and/or specifications, contact your Fujitsu sales representative or Fujitsu authorized dealer.

2. Fujitsu will not be liable for infringement of copyright, industrial property right, or other rights of a third party caused by the use of information or drawings described in this manual.

3. The contents of this manual may not be transferred or copied without the express permission of Fujitsu.

4. The products contained in this manual are not intended for use with equipment which requires extremely high reliability such as aerospace equipments, undersea repeaters, nuclear control systems or medical equipments for life support.

5. Some of the products described in this manual may be strategic materials (or special technology) as defined by the Foreign Exchange and Foreign Trade Control Law. In such cases, the products or portions thereof must not be exported without permission as defined under the law.


Chapter 错误！使用“开始”选项卡将 Heading 1 应用于要在此处显示的文字。 Contents

MCU-AN- 500077-E-10 – Page 3

Contents

REVISION HISTORY ................................................................................................. 2

1 PREFACE .............................................................................................................. 5

1.1 About This Book ...................................................................................................... 5

1.2 Reference Material .................................................................................................. 5

2 INTRODUCTION OF THE DEMO BOARD ............................................................ 6

2.1 Introduction ............................................................................................................. 6

2.2 Feature .................................................................................................................... 6

2.3 Demo Board Module ............................................................................................... 6

3 SYSTEM LEVEL ARCHITECTURE OF THE BOARD .......................................... 8

3.1 Board Block Diagram .............................................................................................. 8

3.2 Control Module ........................................................................................................ 9

3.2.1 MCU Socket .............................................................................................. 9

3.2.2 Key and Display ......................................................................................... 9

3.2.3 Fan and Buzzer ....................................................................................... 10

3.2.4 Temperature Measure Circuit .................................................................. 11

3.2.5 Debugger Interface .................................................................................. 11

3.3 Power Supply ........................................................................................................ 12

3.3.1 SMPS ...................................................................................................... 12

3.3.2 Filter and Rectifier .................................................................................... 12

3.4 Resonant Circuit .................................................................................................... 13

3.4.1 IGBT driver .............................................................................................. 13

3.4.2 Resonant Tank ........................................................................................ 13

4 HOW TO OPERATE THE DEMO BOARD .......................................................... 14

4.1 Assemble the Platform .......................................................................................... 14

4.2 Operate the Demo Board ...................................................................................... 15

4.2.1 Power ON/OFF ........................................................................................ 15

4.2.2 Constant Power Mode ............................................................................. 16

4.2.3 Constant Temperature Mode ................................................................... 17

4.2.4 Timing Mode ............................................................................................ 18

5 DEBUGGING AND PROGRAMMING ................................................................. 19

5.1 Debugging Tool Connection ................................................................................. 19

5.2 Overview of Project ............................................................................................... 20

6 SCHEMATIC ........................................................................................................ 21




MCU-AN- 500077-E-10 – Page 4

7 ADDITIONAL INFORMATION ............................................................................. 23

8 APPENDIX ........................................................................................................... 24

8.1 List of Figures ........................................................................................................ 24

8.2 List of Tables ......................................................................................................... 24

8.3 MCU Pin Assignment ............................................................................................ 25

8.4 ErrorCode.............................................................................................................. 26



MCU-AN- 500077-E-10 – Page 5

1 Preface

1.1 About This Book

This book provides a detailed hardware description of the half bridge inductor heater board. The demo board is a reference platform for half bridge inductor heater design. This Inductor Heater (Half Bridge) Demo Board User Manual is written for software, hardware, and system engineers, who are developing their own inductor heater project. Table1.1 shows the summary of chapters included in this manual.

Chapter Title Description

Preface This chapter introduces the content of this book

Introduction of the Demo Board

This chapter introduces the information of the demo

System Level Architecture of the Board

This chapter explains the HW design of the demo board

How to Operate the Demo Board

This chapter describes how to operate the demo board by front board

Debugging and Programming This chapter introduces how to connect the demo board to the adapter.

Schematic and BOM This chapter shows the schematic and BOM of the demo

Table 1. 1 Chapter Summary

1.2 Reference Material

Use this book in conjunction with:

Inductor Heater (Half Bridge) FW User Manual v1.1.0




MCU-AN- 500077-E-10 – Page 6

2 Introduction of the Demo Board

2.1 Introduction

The Inductor Heater (Half Bridge) Demo Board is a reference design for customer. It contains two part, namely main board and front board. They are controlled by only one MCU.

The main board is built around Fujitsu MB95F430 serial MCU. The abundant modules and peripherals make it very suitable for Inductor Heater design no matter a half bridge style or a quasi resonant one.

The front board adopts LED display and capacitive touch buttons. It supports max 8 single LEDs, a LED module and 8 buttons.

2.2 Feature

This demo board supports these features below.

Support 8 single LEDs and a LED module (8segments) max.

Support 8 touch sense buttons

Afford debugging interface for MCU and tuning interface for touch sense chip

9 power levels:600w,700w,900w,1200w,1400w,1800w,2000w,2400w,3000w.

Three modes: constant power, constant temperature, timing.

2.3 Demo Board Module

Figure 2.1 shows the front view of the main board and the modules.

Figure 2.1 main board



MCU-AN- 500077-E-10 – Page 7

Figure 2.2 shows the front view of the front board and the modules .

Figure 2.2 Front Board




MCU-AN- 500077-E-10 – Page 8

3 System Level Architecture of the Board

3.1 Board Block Diagram

Figure 3.1 gives a system level architecture of the demo board. It has these sections: control, power supply, resonant circuit.

Figure 3. 1 Board Block Diagram



MCU-AN- 500077-E-10 – Page 9

3.2 Control Module

The Control Module is based on the MB95F430H. It has several specialized hardware peripherals, like 16-bit output compare unit, 10-bit ADCs, internal voltage comparator, OPAMP and buzzer driver, which are required for inductor heater control.

3.2.1 MCU Socket

The demo board uses a LQFP32 footprint for MB95F430. Additionally ,there is test pins for each pin of MCU.

3.2.2 Key and Display

There are 8 single LEDs (D1-D8) and a LED module on the front board. The LEDs indicate the mode that the inductor heater is being in. The LED module displays the output power Level in constant power mode, temperature in constant temperature mode or time in timing mode.

All the keys are capacitive touch sense buttons. This function is implemented through AT5088 which is an ASIP for capacitive touch application. The AT5088 can support 8 buttons max.

Figure 3.2 shows the key and display definition

Figure 3. 2 Key Definition

ON/OFF

Timing

+ - Hour Minute

Constant temperature

Constant

power




MCU-AN- 500077-E-10 – Page 10

The front board is connected with the main board through the 10-pin port including 5 wires for LED COMs, 2 wires for I2C bus and 2 wires for GND and +5V. The socket J2 on the front board is prepared for AT5088 tuning.

Figure 3.3 shows the connector.

Figure 3.3 Connector to Front Board

The table below shows the pin definition of front board connector.

Table 3.1 Connector Definition

Pin Number 1 2 3~7 8 9 10

Name +5v GND COM0~COM4(LED) SDA SCL NC

3.2.3 Fan and Buzzer

When the inductor heater works, the fan need to work at the same time to chill the heat-sink, and decrease the temperature of the rectifier module and IGBTs in advance. The fan is a 12v driving set. A 7812 is used to convert the 15v to 12v.

The buzzer module is located on the main board, and it is drove by the specialized BUZ pin of the MCU.

Pin 1



MCU-AN- 500077-E-10 – Page 11

3.2.4 Temperature Measure Circuit

In order to avoid the IGBT failure caused by over temperature, a NTC is placed on the top of IGBT Q1 to monitor the temperature.

Apart from the NTC on IGBT, there is another NTC is used to measure the temperature of the pot. It is placed in the middle of the wire plate where is close to the bottom of the pot.

Figure 3. 3 Temperature Measuring Port

3.2.5 Debugger Interface

Socket J1 on the main board provides an interface for BGMA with MCU. The user can program the MCU or do debugging using the BGMA.

IGBT temperature

measure

Plate temperature

measure




MCU-AN- 500077-E-10 – Page 12

3.3 Power Supply

3.3.1 SMPS

A +15v DC block power supply (U1) serves as the main power supply to the control section of the demo board. The +15v power supply is supplied to the gate driver directly. A +12v power supply for the fan is generated using a regulator (U3). The +5v is also generated from +15V using the regulator U2.

3.3.2 Filter and Rectifier

Before entering into the resonant sink, the 50HZ AC power has to be change to DC-Link by the Filter and Rectifier stage. The filter part consists of some protection components, induction and capacitors, such as fuse (F1), relay (RL1), inductor (L2), and capacitor (C16, C14, and C21).

Rectifier module RL1 convert AC to DC, then the DC power go through the L1 and C22 to the resonant sink.

A current transformer T2 is embedded in the circuit for AC current measure.

For more information please refer to the chapter “Schematic and BOM”.



MCU-AN- 500077-E-10 – Page 13

3.4 Resonant Circuit

3.4.1 IGBT driver

The IGBT driver circuit is built around IR2113 manufactured by IR. There are two power supplies for it. One is +15v which will supply power to the IGBT gate, and another is +5v which supply power to the logical part of the component.

JMP1 is used to disable or enable the driver output. When the jumper is open , the driver output will be enabled ,or it will be disabled.

Figure 3. 4 IGBT Driver Block

3.4.2 Resonant Tank

IGBT Q1 and Q2, C18, C24 and wire plate make up the main part of the resonant tank. J8 and J9 sever as the headers for wire plate connection. Current transformer T1 is added to the resonant sink serial with the wire plate. It will transform the current to the MCU for over current protection. A heat-sink is used here to disperse the heat generated by IGBTs and rectifier.

JMP1




MCU-AN- 500077-E-10 – Page 14

4 How to Operate the Demo Board

4.1 Assemble the Platform

This Demo Board Set consists of such parts:

Main board

Front board

Wire plate

Fan

One 10-wire bus

Figure 4.1 shows the assembled demo board platform.

Figure 4. 1 Demo Platform



MCU-AN- 500077-E-10 – Page 15

4.2 Operate the Demo Board

4.2.1 Power ON/OFF

If the main board is connected to 220v,The MCU will run immediately, but the power stage doesn’t work. User can drive the relay to be on by touching BUTTON6, then the system run

in standby mode . The led D5,D7 on the front board will light as indication of standby mode. The D1~D8 and LED module will not light on. User can also shift the relay to be off by touching the BUTTON6.

All mentioned below can be done only after the system is in standby mode.

Figure 4. 2 Standby Mode




MCU-AN- 500077-E-10 – Page 16

4.2.2 Constant Power Mode

When touch the BUTTON1 after the system is in standby mode, the system enters constant power mode. D4 and D2 will be on and the led module will display the power level that indicates the output power.

User can touch the BUTTON5 or BUTTON4 to select the power level. The first touch to each of the two buttons will trigger the selecting process with figure flickering. Touching BUTTON5 increases the power level, while touching BUTTON4 decreases the power level. The selection will be confirmed until 5 seconds after each touch.

Figure 4.2 shows the constant power mode.

Figure 4. 3 Constant Power Mode



MCU-AN- 500077-E-10 – Page 17

4.2.3 Constant Temperature Mode

Touch the BUTTON0 will shift the system to constant temperature mode from constant power mode or standby mode. D3, D1 will light on. The figure shown by led module means the target temperature that user set.

The user can touch the BUTTON5 or BUTTON4 to change the target temperature.

Figure 4.3 shows the constant temperature mode.

Figure 4. 4 Constant Temperature Mode




MCU-AN- 500077-E-10 – Page 18

4.2.4 Timing Mode

If the system is already in constant power mode or constant temperature mode, the user can touch the BUTTON7 to make system entering timing mode. The system will run in constant power mode or constant temperature mode until the time is out. After that, it will back to standby mode automatically.

In timing mode, user can touch the BUTTON3 or BUTTON2 to select hour or minute setting, and touch the BUTTON5 or BUTTON4 to change the content. The figure which is in setting will flicker in frequency of 1HZ as the same as mentioned before. The rang of time is 1minute to 1hour and 59 minutes.

Figure4.4 shows the timing mode.

Figure 4. 5 Timing Mode with Constant Power Output Note:

1. User can quite constant power mode, constant temperature mode or timing mode by BUTTON0, BUTTON1, BUTTON7 respectively.

2. If the system is in timing mode, the touch to BUTTON0 or BUTTON1 is invalid.

3. In constant power mode or constant temperature mode, the touch to BUTTON3 or BUTTON2 has no effect.



MCU-AN- 500077-E-10 – Page 19

5 Debugging and Programming

5.1 Debugging Tool Connection

Figure 5.1 shows how to connect the adapter to demo board.

Figure 5. 1 Adapter Connection




MCU-AN- 500077-E-10 – Page 20

5.2 Overview of Project

The project can be opened using SOFTUNE V3.0. The files are listed in the left table. Figure 5.2 shows the project.

Figure 5. 2 Project More information for the SOFTUNE V3, please refer to the SOFTUNE Workbench USER’S MANUAL.



MCU-AN- 500077-E-10 – Page 21

6 Schematic

Figure 6.1 shows the front board circuit.

Figure 6. 1 Front Board




MCU-AN- 500077-E-10 – Page 22

Figure 6.2 shows the main board circuit.

Figure 6. 2 Main Board

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MCU-AN- 500077-E-10 – Page 23

7 Additional Information

For more information on FUJITSU MICROELECTRONICS products, please visit the following website at: Simplified Chinese Version: http://www.fujitsu.com/cn/fmc/services/mcu/mb95430/ English Version: http://www.fujitsu.com/cn/fmc/en/services/mcu/mb95430/




MCU-AN- 500077-E-10 – Page 24

8 Appendix

8.1 List of Figures

Figure 3. 1 Board Block Diagram ........................................................................................... 8

Figure 3. 2 Key Definition ..................................................................................................... 9

Figure 3. 3 Temperature Measuring Port.............................................................................. 11

Figure 3. 4 IGBT Driver Block .............................................................................................. 13

Figure 4. 1 Demo Platform ................................................................................................... 14

Figure 4. 2 Constant Power Mode ........................................................................................ 16

Figure 4. 3 Constant Temperature Mode .......................................................................... 17

Figure 4. 4 Timing Mode with Constant Power Output ......................................................... 18

Figure 5. 1 Adapter Connection ........................................................................................... 19

Figure 5. 2 Project ............................................................................................................... 20

8.2 List of Tables

Table 1. 1 Chapter Summary ................................................................................................. 5



MCU-AN- 500077-E-10 – Page 25

8.3 MCU Pin Assignment

Pin Number Pin Name Function

1 PG2/PPG0/X1A/OUT1 Sub clock

2 PG1/TRG0/ADTG/X0A Sub clock

3 Vcc Vcc

4 C C

5 P60/OPAM_P Fan

6 P61/OPAM_N LED COM0

7 P62/OPAM_O SYS_PW

8 P12/EC0/UI/DBG DBG

9 P00/INT00/AN00 System voltage measuring

10 P01/INT01/AN01/BZ Buzzer

11 P02/INT02/AN02/UCK NULL

12 P03/INT03/AN03/UO SDA for I2C

13 P04/INT04/AN04/UI SCL for I2C

14 P05/INT05/AN05/TO0 System current measuring

15 P06/INT06/AN06/TO1 Plate temperature measuring

16 P07/INT07/AN07/EC0 IGBT temperature measuring

17 P70/CMP0_O/OUT0 IGBT driver H

18 P71/CMP0_P LED COM2

19 P72/CMP0_N LED COM3

20 P73/CMP1_O/OUT1 IGBT driver L

21 P74/CMP1_P OC protection reference voltage

22 P75/CMP1_N OC input

23 P76/CMP2_O/UCK LED COM1

24 P63/CMP2_P Surge protection reference voltage

25 P64/CMP2_N Surge input

26 P65/CMP3_O/UO LED COM4

27 P66/CMP3_P Short circuit protection reference voltage

28 P67/CMP3_N Short circuit protection

29 PF2/RSTX Reset

30 PF0/X0 oscillator

31 PF1/X1 oscillator

32 Vss Vss




MCU-AN- 500077-E-10 – Page 26

8.4 ErrorCode

Error Code Description Notes

E0 HW_STOP is set

E1 Low voltage the power supply is lower than 185V

E2 Over voltage the power supply is higher than 256V

E3 Pot temperature sensor is short

E4 Pot temperature sensor is open

E5 IGBT temperature sensor is short

E6 IGBT temperature sensor is open

E7 Pan over temperature the temperature of pan

bottom is higher than 200 ºC

E8 IGBT over temperature the temperature of IGBT is

higher than 80 ºC

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