STEVAL-ILL022V1 solar-led streetlight controller with 25 W LED lamp driver and 80 W battery charger based on the STM32F101Rx

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UM0 User manual STEVAL-ILL0V solar-led streetlight controller with W LED lamp driver and 0 W battery charger based on the STMF0Rx Introduction The solar-led streetlight controller consists of one 0 W

1 UM0 User manual STEVAL-ILL0V solar-led streetlight controller with W LED lamp driver and 0 W battery charger based on the STMF0Rx Introduction The solar-led streetlight controller consists of one 0 W battery charger and one 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. Snapshot of the solar-led streetlight controller September 00 Doc ID 9 Rev /

2 Contents UM0 Contents Safety instructions Intended use Installation Electrical connection Board operation General description Hardware description Board description Controller characteristics Operating instructions Hardware installation Recommended peripheral parameters Solar panel Battery LED Mains switch Troubleshooting DIP selection and LED indicator DIP selection switch LED indicator Schematic and bill of materials Revision history / Doc ID 9 Rev

3 UM0 List of tables List of tables Table. Description of functions Table. Recommended electrical parameters for solar panel Table. Recommended electrical parameters for battery Table. Recommended electrical parameters for LED Table. Symptoms and corrective action Table. DIP switch for LED lamp light-on time selection Table 7. LED indicator and error message Table. BOM Table 9. Pin strip header Table 0. Document revision history Doc ID 9 Rev /

4 Safety instructions UM0 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. The technical data and information concerning the power supply and working conditions must be taken from the documentation provided with the delivery, and must be strictly observed.. Installation The installation instructions of the demonstration board must be taken from the present document and strictly observed. The components must be protected against excessive strain. In particular, no components are to be bent, or isolating distances altered, during the transportation, handling or use. The demonstration board contains electro-statically sensitive components that are prone to damage through improper use. Electrical components must not be mechanically damaged or destroyed (to avoid potential risks and health injury).. Electrical connection Applicable national accident prevention rules must be followed when working on the mains power supply. The electrical installation must be completed in accordance with the appropriate requirements (e.g. cross-sectional areas of conductors, fusing and PE connections).. Board operation A system architecture that supplies power to the demonstration board must be equipped with additional control and protective devices in accordance with the applicable safety requirements (e.g. compliance with technical equipment and accident prevention rules). / Doc ID 9 Rev

UM0 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).

5 UM0 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 shows the structure of the system. Figure. System block diagram Each block s function is described below. The sunlight delivers pockets of photons (solar energy) to the solar panel (also called photovoltaic or PV module). The photons (energy) are absorbed by the PV module and electrons are released. The electrons flow along the metal contact of the PV module and create electricity. The battery charger then converts the electrical energy and charges the battery. The battery stores the electricity supplied by the battery charger. The controller monitors the status of the battery. The LED lamp (LED streetlight) is activated by the LED driver. The LED light controller monitors the system and controls the light-on and light-off in daytime and nighttime. When the battery goes low, the controller sends an enable signal to the mains switch and the AC offline power supply is enabled. The AC offline power supply (not covered in this document) acts as a backup source to power the LED streetlight. The solar-led streetlight controller plays the key role in the system for electricity (solar energy) storage control and LED lamp light-on/-off control. Doc ID 9 Rev /

6 Hardware description UM0 Hardware description. Board description Table. Table describes the various functions of the controller s demonstration board. Figure provides the top view of the board. Description of functions Category Index Designator Description P Solar panel connector P Battery temperature sensor connector (connected to NTC) P LED lamp temperature sensor connector (connected to NTC) System connectors 7 P Mains enable output 0 P LED lamp connector P Battery connector SW~SW DIP switch () : mode selection LED~LED Debug indicators () HMI LED (red) ON: battery charged OFF: battery not charged LED, LED LED (white) ON: battery full OFF: battery not full 9 PB Reset ICP interface CN JTAG. Refer to Table for dip selection mapping.. Refer to Table 7 for debug message mapping. / Doc ID 9 Rev

UM0 Hardware description Figure. Top view of demonstration board. Controller characteristics The controller has the following characteristics. Battery operation voltage:.

7 UM0 Hardware description Figure. Top view of demonstration board. Controller characteristics The controller has the following characteristics. Battery operation voltage:. V max./ V min. for V system Charger: input voltage range 0 VDC output power 0 W LED lamp driver: output current. A output power W Dimensions: mm x 9 mm x 0 mm Doc ID 9 Rev 7/

8 Operating instructions UM0 Operating instructions. Hardware installation The following steps are to install the hardware.. Connect an NTC resistor (battery temperature sensor) to P (refer to Section.).. Connect an NTC resistor (LED lamp temperature sensor) to P (refer to Section.).. Connect the mains switch controller enable input to P (refer to Section.).. Set SW~SW according to DIP selection mapping table (Table ).. Connect P (refer to Section.) to LED lamp.. Connect P (refer to Section.) to battery. 7. Connect P (refer to Section.) to solar panel.. Recommended peripheral parameters.. Solar panel Table. Recommended electrical parameters for solar panel Parameters Symbol Typ Unit Condition Maximum power P max 0 W Maximum power voltage V pm 7. V Maximum power current I pm. A Open circuit voltage V oc. V Irradiance: 000 W/m Module temperature: C Short circuit current I sc.0 A Module efficiency η m. %.. Battery Table. Recommended electrical parameters for battery Parameters Typ Unit Nominal capacity 0 Ah Nominal voltage V.. LED Table. Recommended electrical parameters for LED Parameters Typ Unit Nominal power W Nominal current. A / Doc ID 9 Rev

9 UM0 Operating instructions.. 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. Symptom Symptoms and corrective action Corrective action None of the LED(s) is powered on. The LED(s) include LED lamp, debug LED and battery status LED Battery status LED fails to light during daytime Dim LED lamp Set-up the system as per the hardware installation procedure described in Section.. Check the mains enable signal on P. A high logic level indicates that the battery voltage is too low to power the LED light. This status will persist until the battery is fully charged. Reset the system by pressing the reset button (PB). Check the battery type and polarity. Only V battery can be applied to this system. If the battery has previously been connected reversely, replace the fuse (F) with a new one. Check that the LED lamp is available. Set-up the system as per the hardware installation procedure described in Section.. Reset the system by pressing the reset button (PB). Check that it is not too dark to enable the solar panel s output. Check that the solar panel is available. Try to cool down the LED lamp. Check that the LED lamp s lifecycle is still valid. Doc ID 9 Rev 9/

10 DIP selection and LED indicator UM0 DIP selection and LED indicator. DIP selection switch The DIP switches DIP, DIP, DIP and DIP are used to define the LED lamp s on time after the "switch on" signal has been received from the MCU. Table describes the jumper positions of each switch. The positions 'L' and 'H' are shown in Table. Table. DIP switch for LED lamp light-on time selection Status DIP DIP DIP DIP Mode description L L L L Switch on LED for minutes, then turn-off H L L L Switch on LED for hours during nighttime L H L L Switch on LED for hours during nighttime H H L L Switch on LED for hours during nighttime L L H L Switch on LED for hours during nighttime H L H L Switch on LED for 0 hours during nighttime 7 L H H L Switch on LED for hours during nighttime H H H L Always switch on LED H Always switch on LED at nighttime. LED indicator The demonstration board has four LED indicators, LED, LED, LED and LED, which are used to indicate any error messages during operation. Table 7 describes each type of error message. The messages are there to assist technicians in their troubleshooting and maintenance tasks. Table 7. LED indicator and error message LED LED LED LED Error message No error Battery charger overheat Battery overheat LED driver overheat LED overheat Incorrect solar panel polarity 0/ Doc ID 9 Rev

11 UM0 DIP selection and LED indicator Table 7. LED indicator and error message (continued) LED LED LED LED Error message Battery over-voltage or under-voltage Battery overcurrent LED over-voltage Abnormal LED driving current Short-circuit in LED driver Doc ID 9 Rev /

12 Schematic and bill of materials UM0 Schematic and bill of materials Figure. Board schematic C C R 0 uf 7 9 UVCC V TYNRG Q0 R UA LMD 00nF R 0 I_LED Vba V_Battery Vm Vcc Out R C C 00nF Vcc Vm U TSC0AILT Out Gnd Vp U9 TSC0AILT 0pF D V Vba C 00nF A R0 0K Gnd V Vp D0 STPS0H00CFP R 0 V_LED R 0. T C9 0uF F 0A V R9 0. R 0. R7 0. R 0. R9 0. R0 0. I_Battery V R7 I_Solar UVCC 0 UB LMD C R09 0K 00nF V+_Solar 7 P Battery R 0K R 0K C 00pF B R7 0. D9 Q STP7NF7FP C uf R 0K C0 0uF 0 SMAJA-TR C0 uf C 0uF C 0uF D L C0 9uH 0pF 0pF D C SMAJA-TR P P D C uf Solar Cells LED C uf uh STPS0CFP C uf C 70uF D V R 0 C 70uF R07 K STPS0H00CFP D R0 K V-_Solar Q STP0NF0 V C 70uF STPSH00A R0 0 D STPSL0A C 00nF R 0 R 0. R 0. R 0. R 0. C uf C7 uf V V R0 0 R 0 R 0 R 0K Gate_Input C9 00nF R0 0.V C9 uf D V Q7 MMBT R.K R 0K C 0pF R 7K VDD R 0 T DRIVER TRANS V R 0 U7VCC Q STP7NF7FP LED_P rotection R 0K R7 K C 0pF MMBT Q R 0 MMBT Q R9 0K U7B LM9D C 00nF R 0 R m R.K U TS9ILT NEG OUT VCC POS LED_P rotection C7 0pF Q9 BC07 D V Q MMBT R 0 PWM_Driver C7 uf C uf VDD C7 uf C uf R0.K R7.K R K Q BC07 R9 K C7 uf R97 0K R9 0K R 7K D9.9V D7 C77 VDR MMBT Q OUT NEG VCC R7.K U TS9ILT POS R 0K R 0K Gate_Input PWM_Input R99 K C9 00pF C7 00pF R0 m R m Q MMBT D 00nF VDR V R 0 D R9 7K PWM_Charger R00 K R 0K D7 C7 uf R0 K R0 0K OUT NEG VCC U TS9ILT POS Q BC07 Q BC07 R0 0K D R K D R9 0K LED_Fault D7 R 0K U7A LM9D C 00pF L Bead C 00nF VDD C 00nF C0 00nF C9 00nF C 00nF C7 0uF UB LMD V+_Solar V-_Solar I_Solar V_Battery I_Battery V_LED I_LED R R R7 D R77 D0 R79 D R0 D D R D0 D 0K R R UVCC.7K 0K K 0 K 0 9K 0 R C 0 00nF V S+ V S- IS V B IB V L E D IL E D D R 9.K R7 D9 R7 D R9 D R D R0 D7 R D R D V C7 0K C 0K 0K C9 C0 0K 0K C 0K C 0K C UVCC 00nF 00nF 0nF 00nF 0nF 00nF 0nF UA R9.7K CN VDD R 0K LMD D R 0K A R TRST VDD C 0K R7 U0A STMF0RxT R0 0 00pF P 0K TDI PWM_Driver PA0-WKUP PC/OSC_OUT LD Green IB PA PC/OSC_IN TMS VB PA PC/TAMPER/RTC R70 PWM_Charger 7 Mains_Enable Vba U V.V PA PC CON_B JP L TCK T_Charger 0 0 LD Red R0 0 BAT_FULL PA PC IN OUT 0 VS+ BAT_LED Bead PA PC0 NC NC C RTCK R IS 0 DEBUG_LED R7 C PA PC9 9 DEBUG_LED LD Blue C 0K PWM_Input PA7 PC 0 00nF TDO DEBUG_LED C 0nF 00nF PA PC7 7 DEBUG_LED uf L7LABD-TR C PA9 PC R7 RESET# T_Battery uf PA0 PC LD Blue VS- 0 R 0K PA PC 7 DBGRQ LED_Fault PA PC TMS 0 T_Driver R7 PA/JTMS/SWDIO PC 9 DBGACK TCK 9 VLED LD Blue PA/JTCK/SWCLK PC 0 0 TDI 0 ILED V U.V R 0K PA/JTDI PC0 R7 JTAG LD Blue T_LED 0 C79 C PB0 PD VDD 7 B S PB R7 0K C0 00nF 00nF C R9 PB/BOOT TDO 0 uf uf PB/JTDO BOOT0 0K TRST RESET# PB/JNTRST NRST L9ABD-TR 7 R0 PB OSC_OUT RESET PB OSC_IN 0K 9 C 00nF PB7 R9 0K SW-DIP R PB PB9 9 R R 0K R.K R9.K R9.K R9.K PB0 0 M.K R PB DIP MHz PB T _Charger T _Driver T _B attery T _L E D 0K DIP X R7 0 R90 0 P P R R R R PB DIP C9 C70 R9 C7 R9 C7 0K 0K 0K 0K PB DIP C C R R 0 0 PB 0pF 0pF 0K NTC 0nF 0K NTC 0nF 0nF 0nF C C C7 C CON_B CON_L Charger Thermal LED Driver Thermal Battery Thermal LED Thermal 00nF 00nF 00nF 00nF B U7VCC 7 R 0 U0B STMF0RxT VSSA VDD 7 VSS_ VSS_ VSS_ VSS_ VDD_ VDD_ VDD_ VDD_ 9 Gnd Gnd Vo Vin NC Inhibit Gnd Gnd VBAT AM0v / Doc ID 9 Rev

13 UM0 Schematic and bill of materials Table. BOM Reference Value / generic part number Package /class B One way x mm (SMD),. mm(h), tactile switch C, C µf (0), 00 V, ceramic capacitor C, C, C, C, C, C, C9, C, C, C, C, C, C9, C0, C, C, C, C7, C, C0, C, C, C, C7, C, C77, C79 00 nf (00), 0 V, ceramic capacitor C, C, C 70 µf V, Al-cap electrolytic capacitor C7, C, C, C, C, C, C7, C7 µf (00), V, ceramic capacitor C9, C, C, C, C7, C7, C0 µf 0 V, Al-cap electrolytic capacitor C0, C, C, C 0 pf (00), 0 V, ceramic capacitor C, C0 µf (0), 0 V, ceramic capacitor C7 0 pf (00), 0 V, ceramic capacitor C, C9, C0, C 0 µf 0 V, Al-cap electrolytic capacitor C, C9, C, C, C9, C70, C7, C7 0 nf (00), 0 V, ceramic capacitor C7, C9, C, C, C 00 pf (00), 0 V, ceramic capacitor C 0 pf (00), 0 V, ceramic capacitor C7 0 µf (-), V, tantalum C, C 0 pf (00), 0 V, ceramic capacitor CN 0-way Box header (Right angle mounting), JTAG connector D, D, D, D7, D, D9, D0, D, D, D, D, D, D, D7, D, D9, D0, D, D, D, D, D, D, D7 JFILM (SOD), small signal Schottky diode D, D, D V (SOD 0C), Zener diode D, D0 STPS0H00CFP (TO-0FPAB), power Schottky rectifier D, D9 SMAJA-TR (SMA or DO-AC), V 00 W Transil TM (TVS) D7.9 V (SOD 0C), Zener diode D STPSH00A (SMA or DO-AC), power Schottky rectifier D STPS0CFP (TO-0FPAB), power Schottky rectifier D F STPSL0A 0 A (SMA or DO-AC), power Schottky rectifier (. x 7. mm, axial lead), series fuse JP (see Table 9) 0.x0. mm, way. mm pitch, pin strip header Doc ID 9 Rev /

14 Schematic and bill of materials UM0 Table. BOM (continued) Reference Value / generic part number Package /class L (see Table 9) 9 µh Inductor L, L MHz (00), Chip ferrite bead, %, 00mA max. LD, LD, LD, LD 0 mcd, yellow (00), LED LD mcd, red (.0, diffused, radio lead), LED LD 0 mcd, green (.0, undiffused, radio lead), LED P, P, P Terminal block Terminal, pitch 7.mm P, P, P Header, pin HDRx, pitch.mm Q STP0NF0 (TO-0), N-channel MOSFET Q, Q STP7NF7FP (TO-0FP), N-channel MOSFET Q, Q, Q, Q7, Q, Q MMBTA (SOT-), NPN bipolar transistor Q, Q9, Q, Q BC07 (SOT-), PNP bipolar transistor Q0 TYNRG (TO-0AB), Triac R, R, R, R, R9, R7, R, R9, R0, R, R7, R R, R7, R0, R, R, R, R, R, R, R, R, R, R0, R, R0 0. Ω (0), %, resistor 0 Ω (00), %, resistor R, R, R9 0 kω (00), %, resistor R 0. Ω (Axial lead), cement, W, resistor R, R, R, R9, R9, R0, R, R, R, R, R, R7, R9, R9, R97, R0, R0, R0, R, R, R, R, R7, R, R9, R0, R, R, R, R, R 0 kω (00), %, resistor R, R7, R0. kω (00), %, resistor R, R70, R7, R7, R7, R7, R0 0 Ω (00), %, resistor R. kω (00), %, resistor R0, R, R mω (0), %, resistor R, R NTC, 0 kω (00), NTC resistor R, R07, R0, R kω (00), %, resistor R Ω (0), %, resistor R, R 0 kω (00), %, resistor R7 kω (00), %, resistor R, R9.7 kω (00), %, resistor R0 0 Ω (0), %, resistor / Doc ID 9 Rev

15 UM0 Schematic and bill of materials Table. BOM (continued) Reference Value / generic part number Package /class R 9. kω (00), %, resistor R, R9, R9, R9. kω (00), %, resistor R 0 kω (00), %, resistor R 0 Ω (00), %, resistor R, R, R9 7 kω (00), %, resistor R7. kω (00), %, resistor R MΩ (00), %, resistor R. kω (00), %, resistor R7 0 kω (00), %, resistor R7, R7, R, R 0 kω (00), %, resistor R77, R0 kω (00), %, resistor R79, R, R, R, R7, R90, R9, R9 0 Ω (00), %, resistor R 9 kω (00), %, resistor R9, R99, R00, R0 kω (00), %, resistor R09, R 0 kω (00), %, resistor S DIP switch Position DIP Switch T (see Table 9) µh EER., transformer T (see Table 9) mh Driver transformer U, U LMD (SO narrow), dual operational amplifiers U, U, U TS9ILT (SO), single voltage comparator U, U9 TSC0AILT (SO), current sense IC U L7LABD-TR (SO narrow), positive voltage regulator U7 LM9D (SO), dual voltage comparator U0 STMF0RXT (LQFP), -bit microprocessor U L9ABD-TR (SO narrow), linear regulator X MHz ( x ), crystal oscillator Reference Value / generic part number Package /class Note: STMF0R, STMF0R, STMF0R, STMF0RB, STMF0RC STMF0RD and STMF0RE are all equivalent for the purpose. \ Doc ID 9 Rev /

16 Schematic and bill of materials UM0 Table 9. Pin strip header Figure Description Accessory for JP M0 series jumper socket L : 9 µh +/- % (W//W and twisted) : Winding : pin to pin ( turns CCW) : Winding : pin to pin ( turns CCW) : Wire gage: AWG*0 : Core: EER-Z-PC0 : Bobbin: BEER-0CPFR T : µh +/- % (W+W at 0 khz, Vrms) : Leakage < 0. µh (W short-circuit) : Winding : pin to pin ( turns CCW) : Winding : pin to pin 0 (0 turns CCW) : Winding : pin to pin ( turns CCW) : Wire gage: AWG*0 : Core: EER-Z-PC0 : Bobbin: BEER-0CPFR T : mh (W+W at 0 khz, Vrms) : Leakage < 0 µh (W short-circuit) : No air-gap is required : Winding : pin to pin (7 turns CCW) : Winding : pin to pin ( turns CCW) : Winding : pin to pin (7 turns CCW) : Wire gage: AWG : Core: EE0/-Z-PC0 : Bobbin: BE0-CPSFR / Doc ID 9 Rev

17 UM0 Revision history 7 Revision history Table 0. Document revision history Date Revision Changes 0-Jan-00 Initial release -Sep-00 Changed: connectors : P: solar panel connector : P: battery connector : P: LED lamp connector : SW~SW: mode selection DIP switch Battery use only VDC type Figure changed due to the connectors outline changed Re-new the connectors' location in Figure which is based on the description in Table Figure, the schematic is updated Table, the BOM is updated Doc ID 9 Rev 7/

18 UM0 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. All ST products are sold pursuant to ST s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. 00 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America / Doc ID 9 Rev

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