IPS-EVAL-EH-01 Energy Harvesting Evaluation Kit User Manual
Contents
1. The five push button switches on the IPS EVAL EH 01 are described in the following table Table 6 Push button Switches Switch AE HI Enables High Current mode Regulated Voltage Output AE LO Shuts down High Current Regulated Voltage Output LCE HI Enables Low Current mode Regulated Voltage Output AE HI must first be pressed AE LO must be pressed after LCE HI LCE LO Shuts down Low Current mode Regulated Voltage Output LED Lights blue LED when MEC101 voltage is greater than 2 15V 3 3 Output Header J1 J2 Figure 18 shows the pin out on the Output header 11 and the test point J2 Output header J1 1s the intended interface for connecting to various evaluation kits such as the TI EZ 430 demonstration kit Output header J2 1s unpopulated but intended for test control points The pins on these headers are detailed in Table 7 J1 J2 LCE CTL Output GND Header Batt Mon Ctl Batt Mon Reg Out AE CTL Figure 18 Output Header J1 J2 NOTE If ADC switch is the On position and Mon Ctl is left High it is possible to deplete the battery through the 200kO divider at 20UA 003 v0 3 August 2011 www InfinitePowerSolutions com 15 User Manual IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions Table 7 Header J1 J2 Pin Descriptions Provides the ability to externally enable the High Current mode 1 AE CTL Regulated Voltage Output Toggle High2. e S mnl 7 2 2 2 Low Current rosca d ncn EXE VERDE DR DI CREE CRX V VD LN OS 9 2 9 E 12 2A CUI VV AKC 12 2 9 Baltery Check edu xr DU Fc x re dU ERE ERE vu 13 2 BOOST SCOT REO T 13 3 0 Configuration and Connection eee eee eee ee eee eee eee 13 3 1 Slide SWEDES niunt idit din i Seni tq 14 3 2 Momentary Push button Switches eese 15 3 3 Output Header a m 15 3 4 Charging TerminallS c ccssssssssssssssesssssssssessssssseseesssseseesssseseeseesssaeseesssasseeseransass 17 9 2 TES PON 5 E 17 3 6 WAKE GND 0 4 12 1 4120 424414444 1 1 1 11 1111 11 atn a nanus 17 4 0 Physical Connector Information 18 4 1 Output Header Mating Socket eere 18 Appendix A Schematic and Gerber Files 19 UMO003 v0 3 August 2011 www InfinitePowerSolutions com User Manual 3 IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions 1 0 Introduction This user manual describes the configuration and use of the IPS EVAL EH 01 Energy Harvesting Evaluation Kit This kit allows the user to efficiently store harvested
3. IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions The users target application or test equipment can also disable the High Current mode output by toggling pin 1 AE CTL Low on J1 or J2 Figure 8 When CTL is toggled Low the board circuitry strobes the AE pin with a falling pulse on the MAX17710 disabling the regulator output 2 2 2 Low Current Mode The Low Current mode regulator output can be enabled or disabled manually by the user It can also be enabled and disabled with control signals from the target application connected at J1 or by test signals at J2 refer to the Output Header Section 3 3 for details about J1 and J2 To enable the Low Current mode the High Current mode regulator on the MAX1770 must be enabled Perform the following steps Figure 9 1 Slide the PWR CTL switch to the position 2 Press the AE HI button switch this strobes the AE pin high on the MAX17710 which enables the regulator output 3 Press the LCE HI button switch this strobes the LCE pin on the MAX17710 with a rising edge signal and enables Low Current mode 4 Press the AE LO button switch this strobes the AE pin on the MAX1770 with a falling edge signal and disables High Current mode Figure 9 Enable Low Current Mode The target application or test equipment can also enable the Low Current mode regulated output by performing the following steps Figure 10 1 Toggle pin 1 AE
4. CTL High on J1 or J2 this strobes the AE pin on the MAX17710 with a rising pulse enabling the regulator output in High Current mode 2 Toggle pin 6 LTE CTL High on Jl or J2 this strobes LCE pin on the MAX17710 with a rising pulse which enables the regulator output in Low Current mode UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 9 ee ae IPS EVAL EH 01 Energy Harvesting Evaluation Kit 3 Toggle pin 1 AE CTL Low on or J2 this strobes the AE pin on the MAX17710 with a falling pulse which shuts down the High Current regulator output 2 Figure 10 Enable Low Current Mode Using Target Application or Test Equipment When in Low Current mode the regulator can either be shut down or High Current mode regulator can be re enabled To shut down the regulator output while in Low Current mode press the LCE LO button switch this strobes the LCE pin on the MAX17710 with a falling pulse that shuts down the regulator Figure 11 Figure 11 Shutdown Regulator Output When in Low Current Mode To return to High Current mode from Low Current mode perform the following two steps Figure 12 1 Press the AE HI button switch this strobes the AE pin on the MAX17710 with a rising pulse enabling the regulator output in High Current mode 2 Press the LCE LO button switch this strobes the LCE pin on the MAX17710 with a falling pulse which shuts down the Low Curren
5. energy in the board mounted industry leading THINERGY 101 Micro Energy Cell MEC available from Infinite Power Solutions Inc IPS The THINERGY MEC101 is the ideal energy storage device for deeply embedded applications that require the lowest cost of ownership with a battery that can accept minute amounts of harvested energy while lasting the lifetime of the application The printed circuit board assembly incorporates an IPS MECIOI the Maxim 17710 integrated power management IC for battery and load management and a Sanyo Amorton amorphous silicon solar panel This self charging self regulated platform provides an example of an energy harvesting and storage system intended to be used with autonomously powered wireless systems The IPS EVAL EH 01 board can be easily connected to a target system such as a microcontroller or wireless demonstration kit to create a stand alone system that does not require external power or replacement of batteries Figure 1 Microcontroller Target Board 399800 Figure 1 Simple Connection of a Target Board to the IPS EVAL EH 01 for a Complete Energy Harvesting System UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 4 IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions 2 0 Functional Description The highly integrated and easy to use IPS EVAL EH 01 provides the user with a complete system for prototyping applications using th
6. to enable Ree Out High Current or Low Current mode Regulated Voltage Output 1 8V 5 2 3V or 3 3V dependent on REG SEL position Provides a switched connection allowing MEC voltage to be measured when pin 4 1s pulled high 3 Batt Mon Used for battery state of charge SOC monitoring The battery voltage is reduced by gt through a voltage divider made of two 100K resistors NOTE Leaving pin 4 high will drain the MEC through the 200kQ resistance Batt Mon Ctl Provides MEC voltage on pin 3 when pulled High Ground or return line for the target application Provides the ability to externally enable the Low Current mode LCE CTL Regulated Voltage Output AE CTL must first be toggled High then LCE toggled High finally must be toggled Low UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 16 fe IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions 3 4 Charging Terminals The IPS EVAL EH 01 has terminals that allow the user to connect external charge sources to the board see Table 8 Table 8 External Charging Terminals Descriptions External DC voltage charge input Connect directly to a DC DC 4 15V to 5 5V charge source Higher voltages can be used with a series resistor External AC voltage charge input rectified onboard with a AC AC Schottky Barrier Diode Array External charging source connection that is less than battery voltage The boo
7. IPS EVAL EH 01 Energy Harvesting Evaluation Kit User Manual UMO03 v 0 3 August 2011 Infinite Power Solutions Tos as RN IPS EVAL EH 01 Energy Harvesting Evaluation Kit Revision History Date Version Revision Initial Draft 07 07 11 New hardware revision using Maxim MAX17710 PMIC 08 04 11 Added Appendix A Schematic and Gerber Files References 1 THINERGY MEC101 Datasheet 2 Maxim MAX17710 Datasheet 19 5872 Rev 0 6 11 2011 Infinite Power Solutions Inc All rights reserved Infinite Power Solutions THINERGY and MEC and the Infinite Power Solutions THINERGY and MEC logos are trademarks or registered trademarks of Infinite Power Solutions in various countries All other names are the property of their respective owners Information in this document supersedes and replaces all information previously supplied All specifications are subject to change without notice 003 v0 3 August 2011 www InfinitePowerSolutions com User Manual 2 gt IPS EVAL EH 01 Energy Harvesting Evaluation Kit Table of Contents UU UU UU 3 MENTE OCU GUM 4 2 0 Functional Description ec eee eere eere eere 5 2 1 Energy Harvesting Source Selection eene 5 2 2 Regulated Output Selection eere 6 2
8. Infinite Fewer Solutions 3 1 Slide Switches The five slide switches on the IPS EVAL EH 01 are described in the following tables Table 1 Energy Harvesting Source Selector Switch EH CTL Energy Harvesting Source EH CTL 1 Upper Onboard Solar Panel CTL 2 Middle External DC AC Connections at DC CTL 3 Lower Low voltage external DC AC rectified Table 2 Power Control Selector Switch PWR CTL Configuration PWR CTL 1 Left Regulated output can be enabled at J1 J2 PWR CTL 2 Right Power Off Regulated output not available at J1 J2 Table 3 Battery Monitor Selector Switch BATT_ADC Configuration ADC Left Battery Monitoring On Batt Level at J1 J2 Batt Mon Ctl High BATT ADC 2 Right Battery Monitoring Off Batt Level not available at J1 J2 Table 4 Boost Internal Resistance Selector Switch BST_SEL Internal Impedance BST SEL 1 Upper BST SEL 2 Lower EH sources with power gt 200uW Table 5 Regulated Output Voltage Selector Switch SEL Regulated Output Voltage REG SEL 1 Upper PWR ON High REG SEL 2 Middle PWR ON High REG SEL 3 Lower PWR High 003 v0 3 August 2011 www InfinitePowerSolutions com User Manual 14 IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Fewer Solutions 3 2 Momentary Push button Switches
9. LOE EM tea R7 LCE Hi QSPST MO L 5 ME IPS EVAT EH 01 AE SPST GND ahi TUE SEL UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 19 User Manual 20
10. Solutions The MAX17710 quiescent current in High Current mode is 650nA typical and in Low Current mode 15 75nA The low current mode is intended to support watchdog timers real time clocks and low power sleep modes available in modern microcontrollers The regulator becomes active when a rising edge 15 detected on the Active Enable pin of the MAX17710 The regulator output is activated after the external capacitor on the PCKP pin component C9 100uF on the underside of the IPS EVAL EH 01 board is charged from the MEC When the voltage level on PCKP exceeds 3 7V the regulator output is enabled in High Current mode The capacitor on PCKP allows the MAX17710 to support large surge or startup inrush currents from the load that the MEC would be unable to handle directly This capacitor also assists the current capability 1f the board 1s used in low temperature environments To set the regulated output voltage position the REG SEL switch to the desired voltage setting as shown in Figure 5 Figure 5 Regulated Output Voltage Selection 2 2 1 High Current Mode The High Current mode can be enabled or disabled manually by the user It can also be enabled and disabled with control signals from the target application connected at J1 or by test signals at J2 refer to the Output Header pin descriptions in Section 3 3 The High Current regulator output becomes enabled when the Active Enable AE pin on the MAX17710 par
11. a low voltage DC source or rectified AC source Charging occurs whenever the input source exceeds the MEC101 battery voltage by 50mV Note that the maximum allowable input power to the charge pin is limited to 150mW UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 5 Ferr IPS EVAL EH 01 Energy Harvesting Evaluation Kit DC DC AC AC lt Onboard Solar d lt External DC AC External Boost Figure 3 EH CTL Select Switch and External Connection Terminals 2 2 Regulated Output Selection The MAX17710 internal LDO regulates voltage from the MEC101 to a load circuit connected to the IPS EVAL EH 01 on pin 2 at connector J1 or pin 2 J2 header Figures 1 amp 17 The LDO regulator output is disabled when the PWR switch is in the Off position Figure 4 below This pulls the Active Enable AE and Low Current Enable LCE pins on the MAX17710 low disabling the regulated output Refer to Reference 2 for details on the operation of the MAX17710 Figure 4 PWR Regulator Output Disabled The regulator supports two different output modes 1 High Current mode 150mA typical load current 2 Low Current mode 100uA typical load current The regulator can be configured for 3 3V 2 3V or 1 8V operation UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual a IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power
12. e THINERGY 0 and the MAX17710 Power Management IC PMIC The user can select one of several options as an energy harvesting charging source and configure the regulated output voltage for various applications These features are depicted in Figure 2 Micro Power Storage THINERGY 4 Buffer Storage Capacitor Figure 2 System level block diagram of the IPS EVAL EH 01 Charger oost Converte UV Protection Buffer Cap Mgmt Light Solar Heat TEG Vibration Piezo Vibration Magnetic RF Detector MAX1 7710 Adjustable Regulator f ii 2 1 Energy Harvesting Source Selection The MAX17710 PMIC manages poorly regulated highly variable inputs typical of energy harvesting sources such as solar RF thermal electric or vibration The user can select the charging or energy harvesting source by positioning the switch located on the upper right corner of the board Figure 3 The first upper position selects the onboard solar panel as the charge source The middle position selects the external DC AC inputs as the charging source The DC or AC terminals are located the upper right corner of the board The third bottom position 1s used to boost low voltage sources as low as 700mV to suitable charging voltage levels above the MEC voltage The BST terminals on the right side of the board are the connection points for this external low voltage charging source which can be either
13. st circuit is enabled by driving the FB pin BST BST on the MAX17710 above the FBon threshold typical 0 75V The boost circuit 1s disabled by driving the FB pin below the FBorr threshold typical 0 25V 3 5 Test Point Terminals The IPS EVAL EH 01 has three test point terminals BATT BATT and Solar The MEC voltage can be measured directly at the terminals CAUTION Shorting the pins at BATT and BATT will permanently damage or destroy the MEC s The onboard solar panel voltage can be measured directly at the Solar terminal 3 6 WAKE GND Terminals The WAKE terminal provides the user with the option to use an external source to enable the High Current mode regulated voltage output as described in Section 2 4 The GND terminal is board ground and also BATT 003 v0 3 August 2011 www InfinitePowerSolutions com User Manual 17 md IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions 4 0 Physical Connector Information 4 1 Output Header Mating Socket The mating female connector for J1 Output Header is Connector Description Mfg Part Number Mouser Part Number IC amp Component Sockets 851 93 050 20 001000 575 501201 05 50 POS R ANGLE Max Manufacturing Corp UMO03 v0 3 August 2011 www InfinitePowerSolutions com 18 User Manual ic md IPS EVAL EH 01 Energy Harvesting Evaluation Kit Appendix A Schematic and Gerber Files
14. t detects a rising edge signal To do this on the IPS EVAL EH 01 the following sequence must be followed Figure 6 1 Slide the PWR CTL switch to the position 2 Press the AE HI button switch This strobes the AE pin high on the MAX17710 enabling the regulator output UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 7 a 0m e IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions Figure 6 Enable High Current Mode To disable the High Current mode and shut down the regulator press the AE LO button as indicated in Figure 7 Pressing LO strobes the AE pin Low on the MAX17710 which shuts down the regulator Figure 7 Disable High Current Mode Shut Down the Regulator The target application or test equipment can also enable the High Current mode output by toggling pin 1 AE CTL High on J1 or J2 Figure 8 When CTL is toggled High the circuitry on the IPS EVAL EH 01 board strobes the AE pin on MAX17710 with a rising pulse enabling the regulator output Note that the PWR CTL switch must be On in order to enable any of the output regulators LCE CTL 8 GND 5 Mon Ctl 4 Enable Disable Batt Mon 4 E Regulator Regulator AE CTL I b Figure 8 AE CTL Used to Externally Enable and Disable High Current Mode 003 v0 3 August 2011 www InfinitePowerSolutions com User Manual
15. t from the OFF state by pulsing the WAKE terminal on the left side of the board with a high signal 1V or higher UMO03 v0 3 August 2011 www InfinitePowerSolutions com 12 User Manual ce a EN IPS EVAL EH 01 Energy Harvesting Evaluation Kit 2 5 Battery Check LED The presence of an MEC101 that has a voltage of at least 2 15V can be confirmed by pressing the LED switch in the lower middle of the board just to the left of the MECIOI 2 6 Boost Select The BST SEL switch located on the bottom right side of the board allows the user to select the internal impedance value of the boost input thereby controlling the current drive through the inductor of the external boost circuit When the BST SEL switch is in the upper position the internal impedance is set to 4 00 and the boost converter consumes 30uA to efficiently support energy harvesting sources with power greater than 354 W When the BST SEL switch is in the lower position the internal impedance is set to 0 4Q and the boost converter consumes 130 to efficiently support energy harvesting sources with power greater than 200uW 3 0 Configuration and Connection Figure 17 shows the locations of all the switches terminals and test points that are used to configure and connect to the IPS EVAL EH 01 Figure 17 The IPS EVAL EH 01 003 v0 3 August 2011 www InfinitePowerSolutions com User Manual 13 ef IPS EVAL EH 01 Energy Harvesting Evaluation Kit
16. t mode regulator UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 10 Fer E IPS EVAL EH 01 Energy Harvesting Evaluation Kit Figure 12 Enable High Current Mode from Low Current Mode The target application or test equipment can shut down the regulator output when in Low Current mode by toggling pin 6 LCE CTL Low on J1 or J2 Figure 13 LCE CTL 6 1 GND Batt Mon 41 Man 3l Reg Qut 2 AE CTL 1 Figure 13 LCE Used to Shut Down Low Current Mode Regulator While in Low Current mode the target application or test equipment can re enable High Current mode as follows Figure 14 1 Toggle pin 1 AE CTL High on J1 or J2 this strobes the AE pin on the MAX17710 with a rising pulse enabling the High Current mode regulator 2 Toggle pin 6 LCE CTL Low on 11 or J2 this strobes the LCE pin on the MAX17710 with a falling pulse which shuts down the Low Current mode regulator 2 LCE CTL 6 GND 51 T2 Batt Ctl 4 Mon 3 1 Reg 21 0 1 d Figure 14 Enable High Current Mode from Low Current Mode UMO03 v0 3 August 2011 www InfinitePowerSolutions com User Manual 11 IPS EVAL EH 01 Energy Harvesting Evaluation Kit Infinite Power Solutions 2 3 Battery Monitor The MECIOI voltage can be monitored or sampled ex
17. ternally by the target application or by test equipment on pin 3 Batt Mon of and J2 respectively To enable this monitoring capability perform the following steps 1 Position the BATT ADC switch to the On position as shown in Figure 15 Figure 15 Turn BATT ADC Switch to to Enable Mon Ctl Control 2 Pull pin 4 Batt Mon Ctl High on or J2 as shown in Figure 16 Enable Disable Batt Mon Batt Mon GND 5 EI Batt Man Ctl 4 Batt Mon 31 Qut 2 m 4 02s m Figure 16 Pull Batt Mon Ctl High to Enable Monitoring of Battery Voltage To disable external monitoring pull pin 4 Batt Mon Ctl Low on J1 or J2 Figure 16 or position BATT ADC to the Off position Caution It is possible to completely deplete the MEC101 of energy inadvertently if the ADC switch is left in the position and pin 4 Batt Mon Ctl is left high It is important to not leave Batt Mon Ctl signal high any longer than necessary to sample the voltage If external monitoring of the battery 1s not necessary at all switch BATT ADC to the Off position 2 4 Off Active Wake This feature allows the target application to be in an OFF Active state drawing zero current when the application circuit does not need any power and has turned itself off An external source event can enable the High Current mode regulated outpu
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