P2110-EVAL-02 User`s Manual
Contents
1. Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 9 Energy Harvesting Development Kit for Battery Charging www powercastco com2. P P2110 EVAL 02 POWERCaST Lifetime Power Energy Harvesting Development Kit for Battery Charging User s Manual featuring THINERG w Micro Energy Cell Overview The Lifetime Power Energy Harvesting Development Kit for Battery Charging is a complete demonstration and development platform for wireless battery charging over distance powered by RF energy radio waves This kit features a THINERGY Micro Energy Cell MEC from Infinite Power Solutions IPS which has an ultra thin form factor and extremely low leakage Batteries are charged by the P2110CSR Powerharvester Chipset Reference Design which converts RF energy stores it into an intermediate capacitor and then provides a pulsed regulated voltage output which provides charge current to the attached storage In this kit the TX91501 transmitter is the source of RF energy at 915MHz but other sources from 850 950 MHz can also be used for power A regulated load voltage is provided to power an application device and the Texas Instruments eZ430 RF2500 wireless development tool is included for demonstration purposes Note This kit is based on the P2110CSR Powerharvester Powercast s P1110 Powerharvester component also charges batteries and the main differences are as follows Parameter P1110 P2110CSR Charging Method Continuous Pulsed Intermittent Output Voltage Range 1 8V 4 2V 2V 5 5V Output voltage floats with the Fixed regulated output voltage ba
3. eZ430 RF2500 kit To use the eZ430 RF2500 with the charging board e install the Sensor Monitor software that comes with the eZ430 RF2500 kit e Plug the eZ430 RF into a USB port let windows search for drivers e Launch the Sensor Monitor software The access point node is shown middle of the window e Plug the THINERGY MEC into the Charging Board e BAT EVAL 01 S1 to BATT S2 to VREG S3 to 2 7V P2110CSR EVB S1 to 4 1V e Plug the eZ430 RF2500T target board into P2 on the Charging Board A new node appear in the Sensor Monitor window e With the transmitter running the THINERGY MEC will continue to pulse charge while the eZ430 RF2500 continues to operate WARNING DO NOT ATTEMPT TO RECHARGE THE BATTERIES INCLUDED WITH THE EZ430 RF2500 KIT AS THEY ARE NOT RECHARGEABLE Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 6 Energy Harvesting Development Kit for Battery Charging www powercastco com JP1 allows for two P2110CSR Powerharvester pin signals to be tied to the eZ430 RF2500 through P2 INT is an output that goes high when the capacitor C3 C5 on the P2110 Evaluation Board reaches a charge threshold and the DC regulated output 3 3V default is available RESET is an input that turns the DC regulator off These pins allow you to monitor the capacitor charging and control the output voltage respectively Through JP1 INT can be tied either to pin 1 or pin 4 of P2 and RESET can be tied to pin 6 These signals require code ch
4. anges to the eZ430 RF2500 and are not implemented for the purpose of this evaluation kit THINERGY MEC Low Voltage Shut off The Charging Board provides low voltage shut off at 2 1V to protect the THINERGY MEC It is recommended to remove the THINERGY MEC Evaluation Card from the connector slot when not in use to avoid unnecessary energy leakage THINERGY Application Development Platform ADP The Charging Board has a header P1 for connecting to the THINERGY ADP and charging an MEC in the ADP A cable is provided for easy connection With the cable connect pin 1 of P1 on the Charging Board with pin 1 on the THINERGY ADP header J5 The ADP can be configured in either Pass Thru or Gated mode for MEC charging Gated mode is recommended to see the pulsed charging voltage and current The J5 header pins on the ADP pins are used as follows 1 VIN H not used 2 VIN L charge from Powercast Charging Board 3 1 O 1 not used 4 O 2 not used 5 ENABLE tied to ground for enabling the ADP EH interface 6 5 0V not used 7 GATE inverted and delayed INT signal from P2110 for measurement timing by ADP 8 A GND ground Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 7 Energy Harvesting Development Kit for Battery Charging www powercastco com Documentation and Software Powercast Powercast documentation including datasheets and user manuals http www powercastco com documentation P2110 EVAL 02 Development Kit o
5. e and you ll notice two voltages over time the open circuit battery voltage Voc and the charging voltage Vcharge Which is set by JP2 Subtract Voc from Veharge and divide the result by the internal resistance of the battery and you will get the charging current for the amount of time that the pulse charger is on The THINERGY MEC provided has an internal resistance of approximately 35Q Alternatively charge current to the THINERGY MEC can be measured directly with the THINERGY ADP not provided using the 8 pin header P1 and the included cable see below Charge Current Measurement The charging current will only be shown for a small amount of time To measure the current of an external battery set the Charging Board to charge the desired battery JP2 to correct voltage S1 to BATT S2 to OFF The preferred method of measurement is to use an oscilloscope with a current probe attached to battery terminal connection XBATT or BT1 You can also place an ammeter in series with the connection to XBATT or BT1 but depending on charging time this method may not give accurate results Wireless Sensor Demonstration The Texas Instruments eZ430 RF2500 wireless development tool is included in the kit as a simple and easy to use application demonstration Please see the documentation from Texas Instruments for software installation and operation TI provides a free sensor demo PC application and the source code Powercast does not provide support for the
6. ent power is available The blinking rate is faster when closer to the transmitter and slower when further from the transmitter Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 3 Energy Harvesting Development Kit for Battery Charging www powercastco com 2 Configure the P2110CSR Evaluation Board The P2110CSR Evaluation Board should be configured as follows when using the Charging Board JP1 C8 connected C6 for shorter charge pulses C8 for longer charge pulses S1 Sets the charging voltage VOUT Default 3 3V used for charging 2 rechargeable alkaline cells in series 4 1 Use this setting to charge the onboard THINERGY MEC 4 2 Use this to charge external lithium ion batteries S2 MEAS this assures all power goes to charging board S3 not applicable S4 not applicable 3 Configure the Charging Board THINERGY MEC Card Connector BAT EVAL 01 Charging Board shown with attached eZ430 RF2500 wireless board 3 1 Insert the THINERGY MEC into the Charging Board Card Connector Slide the MEC Evaluation Card into the large black connector on the Charging Board The exposed metal leads should be facing downward and slide into the connector The connector and MEC card are keyed for proper insertion To charge a different battery than the included MEC card set S1 switch to EXT and connect the external battery across XBATT and GND or use the through hole solder connection BT1 Rev A 4 2015 06 P2110 EVAL 02 Lif
7. etime Power Page 4 Energy Harvesting Development Kit for Battery Charging www powercastco com 3 2 Configure the Charging Board for your desired application The following explains the functions of the jumpers and switches on the Charging Board JP1 Allows harvester signals INT RESET to be sent to eZ430 RF2500 kit explained below JP2 P2110CSR EVB Not used do not connect a jumper Output voltage is set on the EVB P2110 EVB rev B lidded harvester used to set the charging voltage Place a shunt over the jumper with the required voltage 4 1V used for charging the IPS MEC 4 2V used for charging Li ION or Li Polymer cells 4 95V used for charging 3 rechargeable alkaline cells in series 2 8V used for charging 2 NiMH cells in series 3 3V used for charging 2 rechargeable alkaline cells in series Default voltage selected by leaving all jumpers open Warning do not connect more than one jumper at a time S1 Selects storage device BATT charges IPS MEC OFF disconnects battery from charger to eliminate leakage EXT charge external batteries BT1 or XBATT use IPS ADP to charge IPS MEC P1 see instructions below S2 Selects battery output VREG regulated output voltage controlled by S3 OFF no output used for charging only LED rapid battery discharge S3 Selects desired output voltage regulation 2 7V or 2 0V 2 7V for eZ430 RF2500 kit 3 3 Plug the Charging Board BAT EVAL 01 o
8. nect the antennas and a 10 pin connector for P2110CSR EVB the Charging Board 1 Patch antenna 915MHz directional antenna with 120 degree reception pattern included with the P2110CSR evaluation board 1 Dipole antenna 915MHz omni directional antenna with 360 degree reception included with the P2110CSR evaluation board 1 Charging Board Charging Board for voltage selection test points and interfaces to BAT EVAL 01 other devices 1 THINERGY MEC THINERGY MEC101 Micro Energy Cell Evaluation Card 1mAH from Evaluation Card Infinite Power Solutions 1 CABLE ADP 08 8 wire cable for connecting the Charging Board to the IPS Application Development Platform ADP 1 eZ430 RF2500 Texas Instruments eZ430 RF2500 Development Tool used to demonstrate a low power wireless application Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 2 Energy Harvesting Development Kit for Battery Charging www powercastco com Set up and Operation Installation Overview The following basic steps are required to operate the kit and are provided as an overview Detailed installation instructions are provided immediately after this summary 1 Connect an Antenna to the P2110CSR Evaluation Board receiving unit 2 Configure the P2110CSR Evaluation Board 3 Configure the Charging Board 4 Plug in the transmitter and point toward the receiving unit Step by Step Installation 1 Connect an antenna to the P2110CSR evalua
9. nto the P2110CSR Evaluation Board using the keyed connector J2 in the test area 4 Plug in the transmitter and point toward the receiving unit Plug in the TX91501 Powercaster Transmitter and point it toward the receiving unit The front of the transmitter has the Powercast logo and status LED Please see the TX91501 User s Manual for detailed operating instructions http www powercastco com PDF TX91501 manual pdf The transmitter should be used in the upright vertical position and the receiving antennas should also be positioned vertically Note As a precaution do not operate the transmitter within 12 inches of the evaluation board when the patch antennas are attached Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 5 Energy Harvesting Development Kit for Battery Charging www powercastco com Charging Range The line of sight range using the included transmitter and antennas is as follows Dipole antenna 20 25 feet Patch antenna 40 45 feet Charge Current Calculation for THINERGY MEC Direct measurement of the THINERGY MEC is not available as access to the THINERGY battery terminals was not provided to avoid possible damage to the cells However the charging current can be calculated with the use of an oscilloscope with a voltage probe Set the charging board to charge the THINERGY MEC JP2 to 4 1V S1 to BATT S2 to OFF Attach a scope probe between the VBATT and GND test points Monitor the voltage on the scop
10. rd connector Large black connector for the THINERGY MEC Evaluation Card Insert the Card with metal leads facing downward JP1 P2110 I O interface to P2 RESET P2110 input turns off regulated output from P2110 INT P2110 output high when Vout is active INT P2110 output high when Vout is active JP2 Regulated charging voltage selection ONLY CONNECT ONE AT A TIME 4 1V THINERGY Micro Energy Cell 4 2V Li ION or Li Polymer cells 4 95V 3 Alkaline cells in series 2 8V 2 Ni MH cells in series 3 3V 2 Alkaline cells in series default setting with no jumper connection P1 Connector for IPS Application Development Platform Pin 1 is marked with P2 Connector for output load e g for included eZ430 RF2500 kit or any low power device with compatible connector S1 Switch for charge selection BATT Charge is directed to the MEC OFF no charging EXT Charge is directed to XBATT BT1 or the ADP header P1 S2 Switch for output load VREG regulated output to S3 OFF output power from IPS MEC or external battery is OFF LED power to LED for rapid drain of MEC or other battery at BT1 3 Selection for regulator output voltage 2 0 or 2 7V 2 7V is required for the included eZ430 RF2500 kit with the pre loaded TI firmware Note It is recommended to remove the THINERGY MEC Evaluation Card from the connector slot when not in use to avoid unnecessary energy leakage
11. tion board receiving unit This kit includes two receiving antennas matched to receive maximum energy at 915MHz a dipole for omni direction charging and a patch for directional charging The patch will work at further distance than the dipole or provide a faster charge rate when used at the same distance from the transmitter as the dipole Both antennas include an SMA connector for easy attachment to the P2110CSR evaluation board The estimated operating distance with the included transmitter and receiving antennas is Dipole antenna 20 25 feet Patch antenna 40 45 feet Other 915MHz antennas can be used or if using an RF source other than the one included an antenna with proper frequency matching should be used for best performance Note A DC block must be used when the antenna is a DC short Below is a link to a coaxial inline DC block that can be used For actual deployment a series capacitor on the input to the harvester is the best and lowest cost solution The cap should be rated for the desired frequency to avoid unwanted insertion loss http www minicircuits com pdfs BLK 89 pdf Note Optional testing of P2110CSR Evaluation Board only also requires Step 5 To test the proper function of the P2110CSR Evaluation Board use the following settings or see the instructions for the P2110CSR EVB at http www powercastco com PDF P2110CSR EVB pdf J1 Antenna connected JP1 C6 connected S2 LED The LED will blink when suffici
12. ttery voltage until the configured maximum output voltage is reached Output Voltage Usage Direct power OR Pulsed power OR Battery charging direct connection to typical battery Battery charging additional circuitry typically required Operating Charging Range with identical antennas Shorter roughly half as far as the P2110 Longer roughly twice as far as the P1110 P1110 is NOT to be used with thin film batteries like THINERGY that require a fixed charging voltage The P1110 Evaluation Board kit P1110 EVB is also available to charge batteries using the P1110 The P1110 EVB will receive power from the transmitter included with the P2110 EVAL O01 or P2110 EVAL 02 development kits Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 1 Energy Harvesting Development Kit for Battery Charging www powercastco com Contents The contents of the kit are shown in the image and table below MSP430 e Z430 RF2500 Development Tool Qty Item Description 1 Power and Data 3 watt 915 MHz transmitter for power and data with integrated 8dBi Transmitter antenna and two power jacks Sends a pre programmed transmitter TX91501 3W ID ID that is received by the P2110CSR Powerharvester and can be decoded with additional components 1 P2110CSR Evaluation Evaluation board for P2110CSR Powerharvester This board has an Board SMA connector to con
13. verview http www powercastco com PDF P2110 EVAL 02 overview pdf P2110 EVAL 02 Development Kit user s manual http www powercastco com PDF P2110 EVAL 02 manual pdf P2110CSR Powerharvester Chipset reference Design datasheet http www powercastco com PDF P2110CSR datasheet pdf P2110CSR Evaluation Board instructions http www powercastco com PDF P2110CSR EVB pdf TX91501 Powercaster Transmitter user s manual http www powercastco com PDF TX91501 manual pdf The P2110 EVAL 02 is subject to Powercast s Limited Warranty for Development Systems Infinite Power Solutions THINERGY Micro Energy Cells http www infinitepowersolutions com product thiner THINERGY Application Development Platform http www infinitepowersolutions com product thinergyad Technical support for THINERGY products is provided by Infinite Power Solutions Texas Instruments eZ430 RF2500 Wireless Development Tool http focus ti com docs toolsw folders print ez430 rf2500 html Technical support for the e2430 RF2500 wireless development tool is provided by Texas Instruments Rev A 4 2015 06 P2110 EVAL 02 Lifetime Power Page 8 Energy Harvesting Development Kit for Battery Charging www powercastco com APPENDIX A Charging Board Component Description BAT EVAL 01 Charging Board Component Description J1 Keyed connector on the bottom to attach to the P2110 Evaluation Board CONN1 THINERGY MEC Evaluation Ca
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