STMicroelectronics STEVAL-ILL022V1 User Manual
STMicroelectronics STEVAL-ILL022V1 User Manual

STMicroelectronics STEVAL-ILL022V1 User Manual

Solar-led streetlight controller with 25 w led lamp driver and 80 w battery charger based on the stm32f101rx

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STEVAL-ILL022V1 solar-LED streetlight controller with 25 W LED
lamp driver and 80 W battery charger based on the STM32F101Rx
September 2010
Downloaded from
Elcodis.com
electronic components distributor
Introduction
The solar-LED streetlight controller consists of one 80 W battery charger and one 25 W LED
driver. During the daytime, when there is sufficient sunlight, the charger converts the
electricity from the solar panel and charges the battery. At nighttime, the battery powers on
the LED lamp as streetlight.
If it is rainy or cloudy for several continuous days, the battery will gradually run out of power.
The controller then resorts to the AC mains supply to power on the LED until the battery has
had time to fully charge again.
Main features of the solar-LED streetlight controller
Maximization of electricity conversion efficiency from solar panel by way of maximum
power point tracker (MPPT)
Automatic day/night/weather detection
Automatic battery/mains switch over
Constant current control for LED lamp
Battery charge control
Optional LED lighting duration mode
Easy system monitoring via debug LED indicators
Full protection function for OTP, OCP and UVP
Figure 1.
Snapshot of the solar-LED streetlight controller
Doc ID 14469 Rev 2
UM0512
User manual
1/18
www.st.com

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Summary of Contents for STMicroelectronics STEVAL-ILL022V1

  • Page 1 UM0512 User manual STEVAL-ILL022V1 solar-LED streetlight controller with 25 W LED lamp driver and 80 W battery charger based on the STM32F101Rx Introduction The solar-LED streetlight controller consists of one 80 W battery charger and one 25 W LED driver. During the daytime, when there is sufficient sunlight, the charger converts the electricity from the solar panel and charges the battery.
  • Page 2: Table Of Contents

    Contents UM0512 Contents Safety instructions ......... . 4 Intended use .
  • Page 3 UM0512 List of tables List of tables Table 1. Description of functions ........... . 6 Table 2.
  • Page 4: Safety Instructions

    Safety instructions UM0512 Safety instructions Warning: The demonstration board must be used in a suitable laboratory by qualified personnel only, familiar with the installation, use and maintenance of electrical systems. Intended use The demonstration board is a component designed for demonstration purposes only, and shall not be used for domestic or industrial installations.
  • Page 5: General Description

    UM0512 General description General description The solar-LED streetlight controller is the key element of the system, also comprising the solar panel, battery and LED streetlight (lamp). Figure 2 shows the structure of the system. Figure 2. System block diagram Each block’s function is described below. ●...
  • Page 6: Hardware Description

    Hardware description UM0512 Hardware description Board description Table 1 describes the various functions of the controller’s demonstration board. Figure 3 provides the top view of the board. Table 1. Description of functions Category Index Designator Description Solar panel connector Battery temperature sensor connector (connected to NTC) LED lamp temperature sensor connector (connected to NTC) System Mains enable output...
  • Page 7: Controller Characteristics

    UM0512 Hardware description Figure 3. Top view of demonstration board Controller characteristics The controller has the following characteristics. ● Battery operation voltage: – 13.8 V max./11 V min. for 12 V system ● Charger: input voltage range ≤ 50 VDC –...
  • Page 8: Operating Instructions

    Operating instructions UM0512 Operating instructions Hardware installation The following steps are to install the hardware. Connect an NTC resistor (battery temperature sensor) to P4 (refer to Section 3.1). Connect an NTC resistor (LED lamp temperature sensor) to P5 (refer to Section 3.1).
  • Page 9: Mains Switch

    UM0512 Operating instructions 4.2.4 Mains switch When the battery is low, a high logic level output is generated by the MCU, which then enables the mains power. Troubleshooting Table 5. Symptoms and corrective action Symptom Corrective action – Set-up the system as per the hardware installation procedure described in Section 4.1.
  • Page 10: Dip Selection And Led Indicator

    DIP selection and LED indicator UM0512 DIP selection and LED indicator DIP selection switch The DIP switches DIP1, DIP2, DIP3 and DIP4 are used to define the LED lamp’s on time after the "switch on" signal has been received from the MCU. Table 6 describes the jumper positions of each switch.
  • Page 11 UM0512 DIP selection and LED indicator Table 7. LED indicator and error message (continued) LED 1 LED 2 LED 3 LED 4 Error message Battery over-voltage or under-voltage Battery overcurrent LED over-voltage Abnormal LED driving current Short-circuit in LED driver Doc ID 14469 Rev 2 11/18 Downloaded from...
  • Page 12: Schematic And Bill Of Materials

    Schematic and bill of materials UM0512 Schematic and bill of materials Figure 4. Board schematic AM03453v1 12/18 Doc ID 14469 Rev 2 Downloaded from Elcodis.com electronic components distributor...
  • Page 13: Table 8. Bom

    UM0512 Schematic and bill of materials Table 8. Reference Value / generic part number Package /class One way 6x6 mm (SMD), 4.3 mm(H), tactile switch C1, C6 1 µF (1210), 100 V, ceramic capacitor C2, C3, C12, C14, C24, C36, C39, C41, C42, C43, C46, C48, C49, C50, C51, C52, C56, C57, C58, 100 nF...
  • Page 14 Schematic and bill of materials UM0512 Table 8. BOM (continued) Reference Value / generic part number Package /class Table 39 µH Inductor L2 (see (0603), Chip ferrite bead, 25%, 200mA 600 Ω @ 100 MHz L5, L6 max. LD1, LD2, LD3, LD4 80 mcd, yellow (0603), LED 45 mcd, red...
  • Page 15 UM0512 Schematic and bill of materials Table 8. BOM (continued) Reference Value / generic part number Package /class 9.1 kΩ (0603), 1%, resistor R44, R89, R91, R93 3.3 kΩ (0603), 1%, resistor 330 kΩ (0603), 5%, resistor 120 Ω (0603), 5%, resistor R56, R58, R96 47 kΩ...
  • Page 16: Table 9. Pin Strip Header

    Schematic and bill of materials UM0512 Table 9. Pin strip header Figure Description Accessory for JP1 M20 series jumper socket – 1: 39 µH +/- 4% (W1//W2 and twisted) – 2: Winding 1: pin 1 to pin 5 (18 turns CCW) –...
  • Page 17: Revision History

    UM0512 Revision history Revision history Table 10. Document revision history Date Revision Changes 08-Jan-2010 Initial release – Changed: connectors 1: P1: solar panel connector 2: P2: battery connector 3: P3: LED lamp connector 4: SW1~SW4: mode selection DIP switch 28-Sep-2010 –...
  • Page 18 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice.

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