EFL700A39 evaluation board kits and design
Contents
1. Updated Section 8 Bill of materials and minor text changes to improve readability DocID026737 Rev 2 15 16 UM1806 IMPORTANT NOTICE PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections enhancements modifications and improvements to ST products and or to this document at any time without notice Purchasers should obtain the latest relevant information on ST products before placing orders ST products are sold pursuant to ST s terms and conditions of sale in place at the time of order acknowledgement Purchasers are solely responsible for the choice selection and use of ST products and ST assumes no liability for application assistance or the design of Purchasers products No license express or implied to any intellectual property right is granted by ST herein Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product ST and the ST logo are trademarks of ST All other product or service names are the property of their respective owners Information in this document supersedes and replaces information previously supplied in any prior versions of this document 2015 STMicroelectronics All rights reserved 16 16 DoclD026737 Rev 2 d2. fe life augmented UM1806 User manual EFL 700A39 evaluation board kits and design in board user guide Introduction This note describes the operation and the instruction for using the two boards developed for training and supporting the design of the solid state thin film battery EnFilm EFL700A39 The evaluation kit order number EFL700EVALKIT allows to discover the operation of the EFL700A39 and to monitor the voltage and the dynamic charge discharge current in real use case condition The power management board order number EFL700PMB is rather a design in board including all the necessary power management circuit around the EFL700A39 and can be directly connected and used in the application for a fast evaluation Figure 1 EFL700EVALKIT Figure 2 EFL700PMB The Energy of Things hy kyy ougrentec The Energy of Things paff gt n KM Reter to UM1806 for EFL700EVALKIT description and how to use deta s August 2015 DoclD026737 Rev 2 1 16 www st com EFL700 power management board EFL700PMB UM1806 1 EFL700 power management board EFL700PMB 1 1 Pictures of the power management board PMB Figure 3 EFL700PMB board top side Figure 4 EFL700PMB board bottom side TR EFL700A39 LCPt2 26 26 7004A h 3V9 Rechargeable Li FRA Trace code 1 2 Block diagram of the power management board PMB Figure 5 EFL700PMB synop
3. does not provide enough current the PMB board will supply burst current until the EFL700A39 voltage gets down to its security range Indeed when the battery voltage falls below 3 2 V the power management IC embedded on the PMB board will disconnect the EFL700A39 in order to prevent it from deep discharge The adjustment of the pulsed load duty cycle can be performed with RA1 and RA2 rheostats RA1 controls the pulse duration whereas RA2 controls the pulse repetition time A probe scope can be connected between TP3 and TP4 test points to tune the switching time of the pulse load If for any reason there is a need to fast charge the EFL700A39 and buffer capacitors then users can connect the PMB board micro USB plug to an external USB port DoclD026737 Rev 2 7 16 Using the PMB board separately UM1806 6 8 16 Using the PMB board separately The PMB board can be used separately for your own application It can be used to supply a real loT Internet of Things application case with a micro controller and radio circuit For this it will be necessary to jump strap the 11 to 11 pins and 12 to I2 pins as shown below in Figure 9 Figure 9 Description of the PMB board If PMB board is used separately then Jump Strap 11 to 11 and 12 to 12 AAA ARAM ke E a d e gt Wer A Connect a PV panel or lee e fi i w E ka any other EH system here here OUT1 and OUT2 pins am Ten l l 3 PV and PV pins SW1 sw
4. mA current is flowing Position 3 10 marking on the ammeter means 100 pA current is flowing Pressing the PB2 push button will show through the ammeter the current that goes in or out of the EFL700A39 micro battery When turning ONT both SW1 switches on the PMB board the user connects 12 SMD buffer capacitors mounted on the PMB board to the output node Buffer capacitors work in parallel with the EFL700A39 micro battery and are dedicated for high current pulse applications As shown in the Figure 9 SW1 is a two way switch Turning ON the way 1 connects 4 of the 12 buffer capacitors Turning ON the way 2 connects 8 of the 12 buffer capacitors Each of the 12 buffer capacitor is a 220 uF 1206 HiCap MLCC capacitor resulting actually in a typical 800 uF capacitance value under 4 V bias when all buffer cap are connected The digital voltmeter indicates the charging voltage of either both EFL700A39 and buffer capacitor when SW1 switch is ON or EFL700A39 alone when SW1 switch is OFF This digital voltmeter shall indicate 4 2 V when the EFL700A339 is fully charged By turning ONT the SW3 switch right position a current burst operation mode is emulated default settings 5 mA 100 ms every 10 s In order to see the behavior of the PMB board and particularly the EFL700A39 and buffer cap behavior press PB1 or PB2 never press both at the same time This will show how the charger and PMB work together If the charge source
5. the possibility to adjust the pulsed load cyclic ratio Its features are Enable disable function by toggling the switch SW3 Default pulsed load current set to 5 mA during a pulse time of 100 ms every 10 s Tunable pulse duration from 1 ms up to 100 ms through RA1 rheostat Tunable pulse repetition time from 1 s up to 10 s through RA2 rheostat The LB can be powered via 2 mm banana connectors or a micro USB plug DoclD026737 Rev 2 5 16 EFL700EVALKIT in details UM1806 4 EFL700EVALKIT in details Figure 8 Description of the PMB and LB boards LB board FL708 STE mees K L ei mm Analog Ammeter Digital Voltmeter Connect 5V external power supply to these 2mm banana plugs PB1 push button to monitor the PV supply current Connect USB cable to this RS1 rotary switch to select the ammeter sensitivity micro USB plug if 5V external is power supply is not available e 7 I s d PB2 push button to monitor g Lem a j the EFL700A39 current RA1 and RA2 rheostats to adjust pulsed load current emulator switching time SW3 switch to activate pulsed load current emulation Connect a PV panel or any other EH system here PV and PV pins Connect the system LOAD here OUT1 and OUT2 pins ae a 6 Y00 143 Connect an USB cable to this t micro USB plug fora gt The ST EnFilm EFL700A39 EFL700A39 fast charging solid state t
6. OURNS CRO603FX1501ELF 1 5K ohms R2 Resistor BOURNS CRO603JO00ELF 0 ohms R3 Resistor PANASONIC ERJ3EKF3003V 300K ohms R4 Resistor PANASONIC ERA6ARW104V 100K ohms R5 Resistor PANASONIC ERJUO06F8200V 820 ohms R6 optional not populated R7 Resistor PANASONIC ERA6AEB105V 1M ohms R8 Resistor PANASONIC ERA6AEB103V 10K ohms R9 Resistor PANASONIC ERJ6RQF2ROV 2 ohms R10 Resistor PANASONIC ERJ6ENF20ROV 20 ohms R11 Resistor VISHAY CRCW0805220RFKEA 220 ohms R12 Resistor PANASONIC ERJPO3F3000V 300 ohms PA Ee SET Ee BOURNS 3224X 1 503E 0 50K ohms RA2 Mot ge d SERIES BOURNS 3299P 1 505LF 0 5M ohms RS1 Rotary DIP Switch C amp K RTE03 10N 04 SW3 SPDT On On Switch APEM TL36W0050 U2 Precision Timer STMicroelectronics NE555D U3 Digital voltmeter LASCAR DPM 1AS BL PCB LB board AXIANE d DoclD026737 Rev 2 11 16 Use case with PV energy harvester UM1806 9 Use case with PV energy harvester Step 1 Control of the efficiency of the PV energy harvester The load is disconnected Pressing PB1 permits the user to monitor the current delivered by the PV energy harvester Figure 12 Step1 schema Figure 13 Step1 picture Power management 10s OFF Rload EFL700A39 12 16 d DoclD026737 Rev 2 UM1806 Use case with PV energy harvester Step 2 Connection of the load for 100 ms PB2 monitors the current in the EFL700A39 The load is mainly supplied with buffer cap energy at th
7. e same time the EFL700A39 also participates Voltage drops consequently from some tens of mV Figure 14 Step2 schema Figure 15 Step2 picture Power CS H management 100s OFF Rload EFL700A39 yy Step 3 At the very beginning of disconnection of the load PB2 monitors the current in the EFL700A39 The EFL700A339 is recharging the buffer cap so current is still negative but reduces as the super cap gets charged Figure 16 Step3 schema Figure 17 Step3 picture vy ag 0 Ui oe me awa Weleh St WA hey ei Power Vv management 10s OFF Rload EFL700A39 d DoclD026737 Rev 2 13 16 Use case with PV energy harvester UM1806 Step 4 Load disconnected after a while PB2 monitors the current in the EFL700A39 Once the buffer cap is charged the EFL700A39 is getting charged at its turn by the PV harvesting system so the current is positive now until the voltage threshold of 4 2 V is reached Figure 18 Step4 schema Figure 19 Step4 picture Power management 10s OFF Rload EFL700A39 E 14 16 d DoclD026737 Rev 2 UM1806 Revision history 10 d Revision history Table 3 Document revision history Date Revision Changes 19 Jan 2015 1 Initial release Updated Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 20 Aug 2015 2 Figure 8 Figure 9 Figure 10 Figure 11
8. hin film battery pm pm e mm pm mm pm mm ve PMB board d 6 16 DoclD026737 Rev 2 UM1806 Using the complete evaluation kit 5 d Using the complete evaluation kit The use of the EFL700EVALKIT discovery kit is recommended to get familiar with the PMB board operation and thus with the EFL700A39 electrical management characteristics The complete discovery kit gives the possibility to monitor the EFL700A39 charging and discharging currents as if the EFL700A39 battery was used in a real case application with high pulse current load It also helps to monitor the charging current delivered by an external charger like an energy harvesting device or an USB port First connect 5 V power supply on LB board via 2 mm banana plugs or USB connector Toggle the SW3 switch to the left position in order to switch OFF the pulsed load emulator operation Then connect an external PV panel or any other energy harvesting device having an output voltage above 5 V to the left side connector of the PMB board as shown in Figure 8 PV and PV pins In order to monitor the current delivered by the PV through the analog ammeter press the PB1 push button The ammeter sensitivity can be adjusted by selecting the correct position of the RS rotary switch depending on the PV current capability Position 1 10 marking on the ammeter means 10 mA current is flowing Position 2 10 marking on the ammeter means 1
9. itch to connect buffer capacitors on OUT1 node Way 1 ON connects 4x 2204F Way 2 ON connects 8x 220UF Both ON connects 12x 220uF Connect an USB cable to this micro USB plug for a EFL700A339 fast charging The PMB board characteristics are the following at 25 C e 4 2 V output voltage limitation during the charge of the battery e Deep discharge battery protection when output voltage gets down to 3 2 V e USB fast recharge d DoclD026737 Rev 2 UM1806 Electrical schematics 7 Electrical schematics 7 1 Power management board Figure 10 PMB electrical schematic saar a 55 LTCaR7 EMSBE tree 7 2 Load board Figure 11 LB electrical schematic d DoclD026737 Rev 2 9 16 Bill of materials UM1806 8 Bill of materials Table 1 BOM of the power management board PMB Reference Designation Supplier Ref parts Value EnFilm rechargeable BT solid state lithium thin film STMicroelectronics EFL700A39 700pA h 3 9 V battery C1 Ceramic capacitor AVX 06033D105KAT2A 1uF C2 C13 Ceramic buffer capacitors MURATA GRM31CR60J227M 220uF CN1 Connector Micro USB TE Connectivity 1981584 1 CN2 Connector board to board MULTICOMP 2212S 08SG 85 8 way 2 54 mm pitch D1 Diode MULTICOMP 1N4148W D2 Di
10. ode MULTICOMP 1N4148W ae Connector Winslow W35532TRC 2 way 2 54 mm pitch PVP PVM _ Connector Winslow W35532TRC 2 way 2 54 mm pitch R1 Resistor PANASONIC ERJPO6F51R1V 51 1 ohms 0 5W R2 Resistor PANASONIC ERJ6GEYOROOV 0 ohms R3A Resistor PANASONIC ERJ3GEYOROOV 0 ohms R3B optional not populated SW1 DIP Switch MULTICOMP MCDHN 02F T V 2 way 1 27 mm pitch U1 uith iow battery disconnect TECHNoLocy LTC4071EMSBE PCB PMB board AXIANE Table 2 BOM of the load board LB Reference Designation Supplier Ref parts Value BP1 SWITCH PUSH BUTTON APEM 18545CD BP2 SWITCH PUSH BUTTON APEM 18545CD C3 Ceramic Capacitor AVX 06035C 103JAT2A 10nF CA Ceramic Capacitor KEMET C0603C475K9PACTU A Zu C5 Ceramic capacitor MURATA GRM31CR60J227M 220uF C6 Ceramic capacitor MURATA GRM31CR60J227M 220uF CDU2 Ceramic Capacitor KEMET C0603C 104K4RACTU 100nF CN2 Micro USB SMD connector TE Connectivity 1981584 1 CN3 2mm Standard tip plug WIMA 105 0752 001 Red 10 16 DoclD026737 Rev 2 ky UM1806 Bill of materials Table 2 BOM of the load board LB continued Reference Designation Supplier Ref parts Value CN4 2mm Standard tip plug WIMA 105 0753 001 Black CNS Board to Board Connector MOLEX 22 05 2081 8 way R SE SC D3 Schottky diodes NXP BAS70 07 DL1 LED WURTH 150060RS75000 Red GV Ammeter PM 2 50UA MONACOR 29 045 Q2 N Channel MOSFET DIODES INC DMG6968U7 R1 Resistor B
11. remely long calendar and cycle life time e High safety with no risk of burning or explosion EFL700PMB and EFL700EVALKIT kits were developed to help designers to evaluate the charge and discharge performances of the EFL700A39 with a proper setup of power management The EFL700PMB includes one PCB The power management board PMB same size as the EFL700A39 battery mounted on the top side The EFL700EVALKIT includes two PCB The power management board PMB and the additional load board LB The power management board PMB e Manages the charge and the voltage regulation of the EFL700A39 e Protects battery against deep discharge e Supports the recharge through an external energy harvesting e Includes buffer capacitors to sustain high pulsed discharge current Buffer capacitors can be disconnected with the switch SW1 The PMB can be used in association with USB port photovoltaic panel or any kind of harvester with its own power management The PMB can be connected to any kind of load with its own power management circuit Whatever the harvester and load system are the PMB allows a safe and efficient use of the EFL700A39 micro battery The load board LB e Includes an analog ammeter and a digital voltmeter allowing the user to monitor The current delivered by the source by pressing D I The current going through the EFL700A39 battery by pressing PB2 The battery voltage e Includes a pulsed load emulator with
12. tic Add external jumpers when PMB board is used without the LB board 12 To radio system or whichever micro controler system To Photovoltaic panel Power 5 V min 50 pA management and deep discharge protection To USB port for EFL700A39 fast charging d 2 16 DoclD026737 Rev 2 UM1806 EFL700 evaluation kit EFL700EVALKIT 2 EFL700 evaluation kit EFL700EVALKIT 2 1 Picture of the complete evaluation kit with the PMB connected to the load board LB Figure 6 EFL700EVALKIT boards connected EFL7 0 e EVALKIT SIS 27 H BAL WADO I 92 6 Y00 14 tA v9 shy ky DoclD026737 Rev 2 3 16 EFL700 evaluation kit EFL700EVALKIT UM1806 2 2 Block diagram of the complete evaluation kit with the PMB connected to the load board LB Figure 7 EFL700EVALKIT synoptic To 5 V power DC power supply supply input OR USB power supply input To USB port 5 V min 50 pA deep discharge To USB port for protection EFL700A39 fast charging To radio system or whichever micro controler system To Photovoltaic H panel PV input USB power supply input D 4 16 DoclD026737 Rev 2 UM1806 General description and features 3 d General description and features The EFL700A39 EnFilm battery brings many benefits compared to conventional battery e Low thickness e Low self discharge e Ext
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