JIAN EG micro corp. EGS002 Datasheets EG8010 demo board

EGSOO2 Sinusoid Inverter Driver Board User Manual

1. Description

EGS002 is a driver board specific for single phase sinusoid inverter. It uses ASIC EG8010 as control chip and IR2110S as driver chip. The driver board integrates functions of voltage, current and

temperature protection, LED warning indication and fan control.Jumper configures 50/60Hz AC output, soft start mode and dead time. EGS002 is an improved version of EGS001 that is compatible of EGSOOI's original interfaces. EGSO002 also integratescross-conduction prevention logic to

enhance its ability of anti-interference, and LCD display interface for users’ convenience to use

chip's built-in display function.

EG8010 is a digital pure sine wave inverter ASIC (Application Specific Integrated Circuit) with complete function of built-in dead time control. It applies to DC-DC-AC two stage power converter

system or DC-AC single stage low power frequency transformer system for boosting. EG8010 can

achieve 50/60Hz pure sine wave with high accuracy, low harmonic and distortion by external 12MHz crystal oscillator. EG8010 is a CMOS IC that integrates SPWM sinusoid generator, dead time control circuit, range divider, soft start circuit, circuit protection, RS232 serial communication,

12832 serial LCD unit, and etc.

2.Circuit Schematic

EGS002 Driver Board Schematic

Figure 2-1. EGSOO2 Sinusoid Inverter Driver Board Schematic

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34 kG micro Corp. EGS002 Datasheets EG8010 demo board

3.Pins and jumpers

3.1 EGS002 Front View

LCD Port

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Figure 3-1. EGS002 Driver Board Pin Definition

3.2 Pin Description

AC Output Current Feedback. Overcurrent protection turns on when pin’s input

voltage is over 0.5V

L—1—i T Right bridge low sidegate drive output [4 | œ |o | Grom —— — o

| $8 |o | Right bridge high side floating supply return | 6 | wo | oOo | Right bridge high side gate drive output [ 35 | e» [|G[|ümd | 8 | xo | o | Left bridge low side gate drive output | 9 | v$ |0 | Left bridge high side floating supply return | 10 | 2900 |o | Left bridge high side gate drive output

* 4 E. corp. EGS002 Datasheets

EG8010 demo board

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AC Mid voltage feedback. Referring to EG8010 datasheet for specific function and ENSE RE Temperature feedback. Overtemperature protection turns on when pin's input voltage

Connect to the fan control. When detects a temperature over 45°C, FANCTR 17 FANCTR

outputs high level “1” to turn on the fan. When the temperature is lower than 40°C,

FANCTR outputs low level “0” to turn off the fan.

* The followings are LCD display interface

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3.3 Jumper settings

| Setting Description

JPI When JP1 is short, it selects AC output frequency at 60Hz JP5 When JP5 is short, it selects AC output frequency at 50Hz JP2 When JP2 is short, it enables 3 seconds soft start mode JP6 When JP6 is short, it disables soft start mode

When JP7 and JP8 are short, dead time 1s 300ns.

| IPT When JP3 and JP8 are short, dead time is 500ns.

EZH When JP4 and JP7 are short, dead time is 1.0us.

| P$ | When JP3 and JP4 are short, dead time is 1.5us.

To [a feces NE When JP9 is open, LCD backlight is off

The driver board’s jumperJP5, JP2, JP7 and JP8 are shorted as default setting, corresponding to 50Hz output, soft start mode on, 300nS dead time. Users can change these based on their needs.

Warning: Jumper of the same function CANNOT be short circuited at the same time. (For example: JP1 And JP5 cannot be short at the same time.)

DTO

NAN EG micro COrp. EGSO002 Datasheets EG8010 demo board

3.4 LED Warning Indication

EGS002 driver board provides LED warning indication function. User can determine problem according to the followings: € Normal: Lighting always on Overcurrent: Blink twice, off for 2 seconds, and keep cycling Overvoltage: Blink 3 times, off for 2 seconds, and keep cycling Undervoltage: Blink 4 times, off for 2 seconds, and keep cycling

Overtemperature: Blink 5 times, off for 2 seconds, and keep cycling

3.5 LCD Display Interface

EGS002 integrates LCD display interface for users’ convenience to test chip's built-in display function that EG8010 supports.Shielding cable is required for connecting EGS002 driver board and LCD, otherwise inverter’s high voltage and high current environment will significantly interfere driver board’s operation.

EG8010 supports 12832 LCD (default) orLCD3220 thatwe specifically designed. Because two LCDs’ drivers are different, user has to specify if intends to buy LCD3220. Salesperson will ship 12832 LCD as default if not otherwise specified.

e 12832 LCD Connection Diagram:

Vol: 2410 1:°6.68

Frq: 5H8Hz T: 636

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Figure 3-2. Connection betweenEGSOO2 and 12832 LCD Figure 3-3. 12832 LCD Display

Note:

There are many modules of LCD in the market. EG8010 supports majority of 12832 LCD based on control IC ST7920. Different LCDs may vary a little in pin map, name or description; user can obtain information online.

e LCD3220 Connection Diagram:

341 kG micro Corp. EGSO002 Datasheets

EG8010 demo board

1441111

Figure 3-4. Connection between EGSOO2 and LCD3220 Figure 3-5.LCD3220 Display

4. Testing

EGS002 Driver Board Testing

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Figure 4-1. EGSOO2 Driver Board Connection Diagram

EGS002 Driver Board Testing

1) Connect IFB, VS1, VS2, VFB and TFB to the ground during testing. 2) Connect DC 5V to pin +5V and DC 12V (voltage can be between 12V and 15V) to pin -12V 3) Connect oscilloscope to TESTI to TESTA to observe waveforms. TESTI and TEST2 outputs

34071 EG micro COrp. EGSO002 Datasheets

EG8010 demo board fundamental frequency square wave, which is shown as CHI blue waveform in figure

5-3. TEST3 and TESTA outputs unipolar modulation wave. When TEST3 and TESTA are

connected to RC filter, it will output waveform shown as CH2 red waveform in figure 5-3.

4) Because pin VFB is grounded, undervoltage protection is going to turn on in 3 seconds. Testl-Test 4 will all shut down; LED blinks four times, off for 2 seconds and keep cycling. When EGS002 is connected to the power supply again, user can observe waveforms for another

3 seconds.

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Figure 4-2. EGS002 SPWM RC filter circuit Figure 4-3.Output waveform of TEST 2 andTEST3 5. Dimension Diagram

EGS002 Dimension Diagram

1.90.1 [«—— ———— 6120.3 —————»9| -—1||«—

EGS002 EG8010 + R2110S SPWM DRIVER BOARD

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| 5-1. EGS002 Driver board dimension diagram

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