ADVANCED LINEAR DEVICES, INC. TM e ® EPAD D LE AB EN EH300/EH300A/EH301/EH301A EH300/301 EPAD® ENERGY HARVESTINGTM MODULES GENERAL DESCRIPTION BENEFITS ® TM EH300/EH301 Series EPAD Energy Harvesting Modules can accept energy from many types of electrical energy sources and store this energy to power conventional 3.3V and 5.0V electrical circuits and systems. EH300/EH301 Series modules are completely self-powered and always in the active mode. They are intended for low power intermittent duty cycle sampled data or condition-based monitoring/ extreme lifespan applications. These modules can accept instantaneous input voltages ranging from 0.0V to +/-500V AC or DC, and input currents from 200nA to 400mA from energy harvesting sources that produce electrical energy in either a steady or an intermittent and irregular manner with varying source impedances. EH300/EH301 Series modules condition the stored energy to provide power at output voltage and current levels that are within the limits of a particular electronic system power supply specifications. For example, 1.8V and 3.6V is a useful voltage range for many types of IC circuits, such as microprocessors. EH300/EH301 Series modules are designed to continuously and actively operate to capture, accumulate, and conserve energy from an external energy source. Each individual EH300/EH301 Series module is set to operate between two supply voltage thresholds, +V_low DC and +V_high DC, corresponding to the minimum (VL) and maximum (VH) supply voltage values for the intended application. When an energy source starts to inject energy into the inputs of an EH300/EH301 Series module in the form of electrical charge impulses, these charge packets are collected, accumulated and stored onto an internal storage capacitor bank. For most common energy harvesting applications, the electrical energy charge packets arrives in the form of input voltage spikes that are uncontrolled and unpredictable. Often these cover a wide range of voltages, currents and timing waveforms. EH300/EH301 Series modules are designed to accommodate such conditions with exceptional efficiency and effectiveness. As an example, a EH300 module can cycle within 4 minutes at an average input current of 10µA and within 40 minutes at an average input current of just 1.0µA. • Eliminates manual and elaborate system trimming procedures • Remote controlled automated trimming • In-System Programming capability • No external components • No internal clocking noise source APPLICATIONS • • • • • • Sensor interface circuits Transducer biasing circuits Capacitive and charge integration circuits Biochemical probe interface Signal conditioning Portable instruments MECHANICAL SPECIFICATIONS • Outline Dimensions: W x L x H : 0.55 in. x 2.00 in. x 0.70 in. • 4 Mounting Holes: 0.085 in. diameter • Weight: 0.5 ounce (14 grams) nominal ORDERING INFORMATION Part Number Description J2 J1 EH300 EH300A 4.6 mJ Module / 1.8V to 3.6V operation 30 mJ Module / 1.8V to 3.6V operation EH301 EH301A 8.3 mJ Module / 3.1V to 5.2V operation 55 mJ Module / 3.1V to 5.2V operation EHJ1C EHJ2C 6 inch cable / J1connector (Input) 6 inch cable / J2 connector (Output) +Input -Input Ground VR (Ready) VP (Output) +V Socket Adapter Cable: J1: Hirose Socket, 2 Position P/N : DF13-2S J2: Hirose Socket, 4 Position P/N : DF13-4S Note: EH300A and EH301A are high energy output versions Rev 2.1 ©2012 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286 www.aldinc.com FUNCTIONAL DESCRIPTION ENVIRONMENTAL SPECIFICATIONS The EH300/EH301 Series module's voltage on the onboard storage capacitor bank is +V, which is also the positive supply voltage switched to power the output power load. Initially, +V voltage on an EH300/EH301 Series module starts at 0.0V. During the initial charge period, +V starts charging from 0.0V. The module's internal circuit monitors and detects this +V voltage. When +V reaches VH, the module output (VP) is enabled and turned to the ON state and is then able to supply power to a power load, such as a microprocessor and/or a sensor circuit. The amount of useful energy available is a function of the capacity of the storage capacitor bank. Meanwhile, an EH300/EH301 Series module continues to accumulate any energy generated by external energy sources. If external energy input availability is high, output VP remains in an ON state continuously, until such time that external energy availability is lower than the power demand required by the power load. As external energy input exceeds power loading, +V increases until internal voltage clamp circuits limit it to a maximum clamp voltage. • • • • • • Input energy charging times t1 and t2 are limited by input energy available minus energy loss by an EH300/EH301 Series module. The energy output time period t3 is determined by the rate of energy used by the power load as a function of energy stored. Low input energy hold time t4 is typically many orders of magnitude greater than the sum of t1, t2 and t3. EH300/EH300A/EH301/EH301A INITIAL SETUP & CALIBRATION EH300/EH301 Series modules are setup and calibrated at the factory to standard specifications and settings. No user setup is required. Optional user control signal and connection to external capacitor or battery storage banks are available at the output port. All EH300/EH301 Series modules are shipped ready to use. EH300/EH301 Waveforms +V VH VL t1 t2 t3 t4 t1 t2 t3 t4 t1 t2 t3 t4 READY VR VH VL VP OUTPUT During normal operation, as power is drawn from an EH300/ EH301 Series module, +V decreases in voltage. When +V reaches VL, output VP switches to an OFF state and stops supplying any further power to the power load. With built-in hysteresis circuits within the module, VP now remains in the OFF state, even when the external energy source starts charging the capacitor bank again by importing fresh new impulses of electrical energy. Once VH level is reached again, output VP is then turned to the ON state again. Hence +V voltage cycles between VH to VL voltage levels and then to the OFF state. When in the ON state, VP can supply up to 1A of current for a limited time period as determined by the stored useful energy and the energy demand by the power load. An optional input/ouput pin VR functions as VP on/off control (external input through 1KΩ) or as READY logical control (output) signal preceeding output VP switching. Leadfree (ROHS) compliant Operating Temperature Range: 0 to 70° C Max. Average Operating Temperature : 50° C Storage Temperature: -40 to +85° C Humidity: To 90% (no condensation) Protection: Conformal and Epoxy coated VH VL Rev 2.1 ©2012 Advanced Linear Devices, Inc. 2 of 4 ABSOLUTE MAXIMUM and MINIMUM RATINGS Max. instantaneous input voltage Max. instantaneous input current Max. input/output power Operating temperature range Min. input Internal voltage clamp Max. output current +/- 500V 400mA 500 mW 0°C to +70°C 0.0V@1nA 7.0V@10mA 1A CAUTION: ESD Sensitive Device. Use static control procedures in ESD controlled environment. OPERATING ELECTRICAL CHARACTERISTICS TA = 25oC, VIN = 4.0V unless otherwise specified EH300 Parameter Symbol Min Typ EH300A Max Min Typ Max Unit Test Conditions Output Low Level VL 1.9 1.9 V Output High Level VH 3.5 3.5 V Charging Input Vin Power Dissipation PD 0.4 Useful Energy Output E 4.6 30 Output On-time Rating t*I 68/25 75/150 VP Output Resistance RVP 0.15 0.15 Ω VP = 3.5V VR Output Sink Current IRsink 2.5 2.5 mA VP = 3.5V, VR = 3.5V VR Output Source Current IRsource -1.0 -1.0 mA VP = 3.5V, VR = 0.0V Output Load Rload Ω Iout = 1A Output Current Iout A Rload = 3.5Ω Unit Test Conditions 4.0/200 4.0/200 0.8 3.5 V@nA 1 2 3.5 1 1 µW mJ 1 cycle msec@mA 1 cycle TA = 25oC, VIN = 6.0V unless otherwise specified EH301 Parameter Symbol Min Typ EH301A Max Min Typ Max Output Low Level VL 3.1 3.1 V Output High Level VH 5.2 5.2 V Charging Input Vin Power Dissipation PD 0.9 Useful Energy Output E 3.9 55 Output On-time Rating t*I 80/25 885/150 VP Output Resistance RVP 0.1 0.1 VR Output Sink Current IRsink 5 VR Output Source Current IRsource -2 Output Load Rload Output Current Iout EH300/EH300A/EH301/EH301A 6.0/300 6.0/300 1.8 5 V@nA 1.5 3 µW mJ 1 cycle msec@mA 1 cycle Ω VP = 5.0V 5 mA VP = 5.0V, VR = 5.0V -2 mA VP = 5.0V, VR = 0.0V Ω Iout = 1A A Rload = 5.0Ω 5 1 Rev 2.1 ©2012 Advanced Linear Devices, Inc. 1 3 of 4 EH300 TEST CIRCUIT TYPICAL CABLE CONNECTION EH300/EH301 MODULE ±6.0V AC OR +6.0V DC VOLTAGE SOURCE J2 J1 1KΩ EH300/EH301 MODULE 1 + IN 2 - IN INPUT CABLE: EHJ1C DC VOLTMETER RIN ≥1 G Ω 1 2 3 4 +V VP VR GND J2 J1 BROWN 1 2 3 4 1 2 BROWN 100Ω OUTPUT CABLE EHJ2C RED GREEN YELLOW BLACK DC VOLTMETER EH4200* CONNECTION TO EH300 EH4200 MODULE DC LOW VOLTAGE ENERGY SOURCE _ J4 CABLE: EHJ3C CABLE: EHJ4C 4 3 2 1 1 2 + EH300/EH301 MODULE J1 J2 J1 1 2 3 4 1 2 DC VOLTMETER CABLE: EHJ2C RLOAD * EH4200 Series of Micropower Step Up Low Voltage Booster Modules, e.g. EH4205, EH4295 TYPICAL SYSTEM APPLICATIONS ADD EXTERNAL CAPACITOR POWERING APPLICATION LOAD MODULE EH300/EH301 MODULE J2 J1 1 2 3 4 1 ENERGY SOURCE 2 EXTERNAL CAPACITOR ENERGY SOURCE 2 ENERGY SOURCE +V GND +V VP 2 GND IMPULSE POWER TO MICRO CONTROLLER WITH I/O HANDSHAKE EH300/EH301 MODULE J2 1 VP 2 3 GND 4 1 2 3 GND 4 1 BATTERY CHARGER EH300/EH301 MODULE 1 J2 J1 + TRICKLE CHARGE A BATTERY OR DRIVE A BATTERY CHARGER J1 APPLICATION LOAD MODULE EH300/EH301 MODULE ENERGY SOURCE MICRO CONTROLLER J1 J2 1 1 2 3 4 2 V+ I/O GND 1K Ω EH300/EH300A/EH301/EH301A Rev 2.1 ©2012 Advanced Linear Devices, Inc. 4 of 4