STMicroelectronics STEVAL-GLA001V1 User manual

Introduction

The STEVAL-GLA001V1 evaluation board is designed to help you develop applications with insulated control of three AC loads

up to 1 kW (230 Vrms) using Triacs and AC switches instead of relays.

To control the STEVAL-GLA001V1, you can use a NUCLEO-F030R8 development board which allows three AC switch control

modes for load control: continuous or pulse gate current, a timer option, and phase control. You can use also any external

microcontroller.

Once you have installed the relevant firmware (freely available at STSW-GLA001V1) on the NUCLEO-F030R8 development

board, you can start adjusting the main parameters through a common serial interface like HyperTerminal.

The STEVAL-GLA001V1 evaluation board features a wide input voltage range, low standby power losses, IEC61000-4-4

robustness and two low voltage power supplies.

The targeted applications are residential appliances requiring insulation between microcontroller and mains voltage, such as

washing machines and dish washers, micro-wave ovens, cookers, ovens, soya-milk makers, printers, air-conditioners, fridges,

water-heaters and heaters.

Figure 1. STEVAL-GLA001V1 evaluation board (top view)

Insulated AC switch control evaluation board for home appliances

UM2304

User manual

UM2304 - Rev 3 - January 2019

For further information contact your local STMicroelectronics sales office.

www.st.com

1Evaluation board objectives

1.1 What does this demoboard aim to demonstrate?

As said in the introduction, the STEVAL-GLA001V1 evaluation board allows insulated control of AC loads using

AC switches instead of relay solutions.

The board embeds a power supply to make it independent from power side.

You just have to connect mains voltage, loads and an external microcontroller.

On the smart control side, using an STM32 Nucleo board (NUCLEO-F030R8) with the available firmware allows

to easily configure a lot of parameters for specific load control.

1.2 STEVAL-GLA001V1 evaluation board main blocks

The STEVAL-GLA001V1 evaluation board features the following main components:

•AC switches (X101, X102 and X103)

• A flyback power converter providing:

– VCC_AC: non regulated output and referenced to mains voltage (VCC_AC positive regarding

GND_AC)

◦ used to control the three AC switches

◦ maximum output current: 150 mA

– 5VDC: 5 V positive output, referenced to GND, insulated regarding mains voltage

◦ supplies the LEDs and all other electronic parts if VDD selector is set to 5V position

◦ maximum output current: 500 mA for all the secondary side (5 V, 3.3 V and VDD mixed)

– 3.3VDC: 3.3 V positive output, referenced to GND, insulated regarding mains voltage.

◦ supplies all other electronic parts if VDD selector is set to 3.3 V position.

◦ maximum output current: 500 mA for all the secondary side (5 V, 3.3 V and VDD mixed)

– VDD: used to select whether the external microcontroller is supplied with 5 V or 3.3 V (default).

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Evaluation board objectives

UM2304 - Rev 3 page 2/46

Figure 2. STEVAL-GLA001V1 evaluation board synoptic

VCC_AC VCC_AC

LDO 5 V LDO 3.3 V VDD

Viper

ZVS

To customer µC board

GND_AC

5VDC

MODE

T2 T3 tp+ tp- + -

LED1 LED2 LED3

J 203

J 202

Mains in put AC switches and load connections

Power supply primary side

Auxiliary supply fo r Triac gate control

Power supply in sulated secondary sid e

5V/3.3V supply for µC and insulated gate control

ZVS circuit

( frequency detection) AC Switches gate contro l User interface

LED4

Power / Time

Inpu t switch

Fuse

M OV

Inpu t ca pa cito r

Hi gh vol ta ge

ind ica tor

X102 X103X101

VDD

selector

3.3VDC

GND

To MC Connector board

ZVS

1.3 Targeted applications

The main targeted applications are residential appliances where insulation between microcontroller and mains

voltage is required, such as:

• Washing machine, dish washer

•Micro-wave oven, cooker, oven, soya-milk maker

• Printer

• Air-conditioning, fridge

• Water-heater, heater

1.4 Main used part numbers

The main part number references used in the STEVAL-GLA001V1 evaluation board are:

•AC Switches: T1635T-8FP, ACST310-8B and ACS108-8TN

• Rectifier diodes: STPS1L60, STTH1R06 and STPS2H100

• Transil: 1.5KE220A

• Voltage regulator: LF50ABV and LF33ABV

• Flyback IC : VIPER16HD

• Voltage reference: TS431AILT

• Op-Amp: TSV631ILT

1.5 Operating range

The STEVAL-GLA001V1 evaluation board is designed to operate within the following operating conditions:

• RMS line voltage range: 90 V to 265 Vrms

• Line voltage frequency range: 50 to 60 Hz

• Ambient temperature range: 0 to 60°C

• Maximum input current: 10 Arms

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Targeted applications

UM2304 - Rev 3 page 3/46

1.6 Performance

The STEVAL-GLA001V1 evaluation board performance characteristics include:

• Stand-by losses < 300 mW (@ 240 V)

•IEC 61000-4-4 (STEVAL-GLA001V1 evaluation board with NUCLEO-F030R8 development board):

– 2 kV criteria A

– 4 kV criteria B

1.7 AC switch load capability

The STEVAL-GLA001V1 evaluation board is designed to operate with the following load conditions:

Table 1. Load capability versus ambient temperature and AC switch

Ambient temperature 0 °C 25 °C 60 °C

Load 1 7.2 A = 1650 W 6.2 A = 1430 W 4.6 A = 1050 W

Load 2 1.5 A = 350 W 1.3 A = 300 W 0.9 A = 205 W

Load 3 0.9 A = 200 W 0.75 A = 170 W 0.5 A = 115 W

Total loads power 2200 W 1900 W 1370 W

All of the above values are RMS, for VMAINS = 230 VRMS and with 5% tolerance on the maximum allowed AC

switch junction temperature.

Load numbers are given with reference to the following figure.

Figure 3. Loads connection versus AC switches

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Performance

UM2304 - Rev 3 page 4/46

2Getting started

2.1 Safety instructions

Caution: The high voltage levels used to operate the STEVAL-GLA001V1 evaluation board present a serious electrical

shock hazard. This evaluation board must be used in a suitable laboratory by qualified personnel who are

familiar with the installation, use and maintenance of power electrical systems.

The STEVAL-GLA001V1 evaluation board is designed for demonstration purposes only, and shall not be used

either for domestic or industrial installations.

2.2 STEVAL-GLA001V1 evaluation board insulation

The STEVAL-GLA001V1 evaluation board is composed of the following main functional blocks:

• The primary side: includes mains voltage input, AC switches, power supply input, ZVS input and referenced

to mains voltage

•The secondary side: includes all microcontroller input/output, power supply output, ZVS output, AC switch

gate control and insulated with respect to mains voltage

Caution: Use insulated measuring equipment and never create a connection between high voltage and insulated

voltage

Figure 4. High voltage and insulated voltage on STEVAL-GLA001V1 evaluation board

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Getting started

UM2304 - Rev 3 page 5/46

2.3 Board connection

Figure 5. STEVAL-GLA001V1 evaluation board connections

• J100: connect mains voltage input, complying with Line and Neutral connection and operating voltage (refer

toSection 1.5 Operating range)

• J101, J102 and J103: connect directly the load between the two points, complying with the load capability

(refer to Section 1.7 AC switch load capability).(1)

• J203: connect to the NUCLEO-F030R8 via the supplied ribbon cable.

• J202: connect to external microcontroller (if you do not use the NUCLEO-F030R8) with 5 V and 3.3 V,

complying with power supply output capability (refer to Section 1.2 STEVAL-GLA001V1 evaluation board

main blocks).

• J200: supplies insulated low voltage 5 V and 3.3 V power (if required), complying with power supply output

capability (refer to Section 1.2 STEVAL-GLA001V1 evaluation board main blocks).

2.4

1. Caution: Do not connect mains voltage.

STEVAL-GLA001V1 evaluation board start-up

Follow this procedure below to start the STEVAL-GLA001V1 evaluation board.

Step 1. Ensure SW100 switch is in the OFF position.

Step 2. Set the SW200 jumper:

– to 3.3 V for NUCLEO-F030R8 development board or 3.3 V external microcontroller

– to 5 V for 5 V external microcontroller

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Board connection

UM2304 - Rev 3 page 6/46

Figure 6. SW200 jumper

Step 3. Connect the ribbon cable between:

– J203 and the NUCLEO-F030R8

– J202 and a board that is not a NUCLEO-F030R8

Step 4. Connect mains voltage on J100

Step 5. Connect loads on J101 to J103

Step 6. Make sure there is no connection between high voltage and insulated voltage sections

Step 7. Ensure any measurement equipment has insulated probes

Step 8. Switch SW100 on to turn the board on

2.5 Hardware function description

2.5.1 Power supply: primary side

The power supply primary side includes the following components:

•SW100 switch to turn the STEVAL-GLA001V1 evaluation board on or off

• F100 fuse and SIOV100 varistor for board protection

• C109 capacitor for noise immunity

• D102 LED for high voltage presence indication

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Hardware function description

UM2304 - Rev 3 page 7/46

Figure 7. STEVAL-GLA001V1 evaluation board power supply primary side components

High Voltage

Mains voltage

test point

SW100

Auxiliary voltage test

point

F100SIOV100

C109

D102

“Line” and “Neutral” test points are available to measure mains voltage.

An auxiliary power supply is generated to supply the AC switch gate control: it is not regulated (fluctuates from

~12 V to ~23 V), referenced with respect to "Line" potential and can supply up to 150 mA for gate control.

“VCC_AC” and “GND_AC” test points are available to measure the power supply voltage level.

2.5.2 Power supply: secondary side

The power supply secondary side is represented by all the low power output insulated from mains voltage.

The transformer output provides 5 V regulated voltage thanks to an LDO regulator. A 3.3 V regulated voltage is

generated from the 5 V voltage thanks to a second LDO regulator.

Figure 8. STEVAL-GLA001V1 evaluation board power supply secondary side components

Up to 500 mA can be sunk from the secondary side in all, as the 5 V and 3.3 V voltages are in serial.

The J200 connector can supply another board or other external electronic functions. In this case, you must ensure

that the sum of all current on the secondary side does not exceed the output current capability.

“5VDC”, “3.3V OUT” and “GND” test points are available to measure these two low voltages.

2.5.3 VDD selector

Some of the signals (push button, mode switch and ZVS) connected to the STM32 32-bit ARM Cortex MCU or

other microcontroller input are referenced to VDD to protect the voltage input capability of any microcontroller.

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Hardware function description

UM2304 - Rev 3 page 8/46

Figure 9. STEVAL-GLA001V1 evaluation board VDD selector components

For a 3.3 V compatible microcontroller, VDD must be connected to 3.3 V by setting the SW200 jumper to the

bottom (D211 LED lights up); this is the default position.

For a 5 V compatible microcontroller, VDD must be connected to 5 V by setting the SW200 jumper to the top

(D212 LED lights up).

As VDD is connected to either 5 V or 3.3 V, the VDD current capability must always be taken into account in

matters concerning the power supply secondary side.

“VDD” and “GND” test points are available to measure VDD voltage level.

2.5.4 Push buttons

Push button signals are available on J202 (user board) and J203 (NUCLEO-F030R8 development board)

connectors. They are referenced regarding VDD and GND (refer to Section 2.5.3 VDD selector).

Figure 10. STEVAL-GLA001V1 evaluation board push button components

The push buttons are normally open and the signal is set to VDD. When a button is pressed, the signal is set to

GND. When the button is released, the signal returns to VDD.

“T1”, “T2”, “T3”, “TP+”, “TP-”, “Power Time +”, “Power Time -” and “GND” test points are available to measure

push button voltage level.

2.5.5 LEDs

LED signals are available on J202 (user board) and J203 (NUCLEO-F030R8 development board) connectors.The

microcontroller voltage level is not important as they use a transistor to be voltage compatible. LED1, LED2 and

LED3 are green, while the "Fault" LED4 is red.

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Hardware function description

UM2304 - Rev 3 page 9/46

Figure 11. STEVAL-GLA001V1 evaluation board LED components

If the LEDx signal is set to 0 (GND), the chosen LED is OFF; if the LEDx signal is set to 5 V, 3.3 V or VDD, the

chosen LED is illuminated.

“LED1”, “LED2”, “LED3”, “LED4” and “GND” test points are available to measure led voltage level.

2.5.6 Switch mode

The mode selector switch signal is available on J202 (user board) and J203 (NUCLEO-F030R8 development

board) connectors. It is referenced with respect to VDD and GND (refer to Section 2.5.3 VDD selector).

Figure 12. STEVAL-GLA001V1 evaluation board mode components

The switch has 3 ON positions, so there is a non-zero voltage on the MODE signal in any position. The following

table shows MODE signal voltage with respect to the switch position.

Table 2. MODE signal voltage versus switch position

MODE switch position

(board silkscreen) MODE voltage MODE voltage with VDD =

3.3 V

MODE voltage with VDD = 5

On/Off VDD ÷ 1.62 2.04 V 3.09 V

Phase control VDD ÷ 2.62 1.26 V 1.91 V

Timer VDD ÷ 2 1.65 V 2.5 V

“MODE” and “GND” test points are available to measure switch mode voltage level.

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Hardware function description

UM2304 - Rev 3 page 10/46

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