MATRIX Mercury NanopowerEnergy Harvesting Synchronous Boost Converter with Microwatt Cold-Start, Input Impedance Matching and Regulated Output DESCRIPTION FEATURES & BENEFITS MATRIX Mercury is a family of highly integrated DC/DC boost converters that are ideal for A new low to lead a new era of energy harvesting harvesting and managing surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators) and thermopiles. VIN as low as 10mV (VOC=20mV, RIN =5) to The patented transformer reuse topology works as a flyback converter, and can operate from V of up to 5V OUT input power as little as a few microwatts. The unique impedance matching feature presents V as low as 6mV (V =12mV, R =5) to IN OC IN a constant impedance load and enables the highest efficiency energy harvesting across the VOUT of 3V entire operating range of input voltages. Ultra-Low quiescent current of 700nA There are multiple input protection voltage options available based on the ratio of the ensures the fastest possible charge times of transformer. The 8-bit on-chip ADC detects when VOC exceeds the programmed limit and turns the output reservoir capacitor. off the input to ensure reliable operation. The result of the measurement is transmitted via a two-wire interface to a micro-controller. Cold-start with V =16mV (R =5, 1:100 OC IN transformer) There are many maximum output voltages between 2V to 5V available. Integrated VOUT regulation prevents voltage overshoot, securing reliable operation with A new high of efficiency to maximize power various battery types. transfer Mercury is available in a 10-lead, 3mm 3mm DFN Up to 80% peak conversion efficiency package and a 9-bump 1.2mm 1.0mm WLP package. Operation temperature is -40C to +85C. Near-ideal impedance matching with input source EXAMPLE APPLICATION: HEALTH MONITORING WEARABLE Minimized power leakage with active input monitoring Figure 1: Example Application Built-in VOC monitoring through an 8-bit circuit ADC True shutdown by disconnecting output when V is below startup requirement OC securing zero power leakage. Miniaturized solution size Three external components are required: input capacitor, output capacitor and a transformer Optional Schottky diode for efficiency improvement Figure 2: Compact WLP package available Example application efficiency chart APPLICATIONS Thermal Energy Harvesting (TEG, Thermopiles) Industrial Remote Sensors Portable Medical Consumer Wearables Smart Meters - C1: 100F/0805, 2.5V, C2: 4.7F/0402 6.3V. D1: Nexperia BAS70L/DFN1006-2 Building Automation - Cold-start voltage is V =24mV which gives a P =12W. OC MAX Predictive Maintenance 2 - Overall Efficiency is defined as P /P where P =V OC/(4 x R ). OUT MAX MAX TEG 1 MATRIX Industries 1455 Adams Drive 1190 Menlo Park, CA 94025 +1 650-462-1003 www.matrixindustries.com info matrixindustries.comRSVD, VINP, VOUT: -0.5V to 7V ABSOLUTE ADC REF, ADC DATA: -0.5V to 7V MAXIMUM RATINGS LX2: -0.5V to 52V (62V for T0C) LX1, VINM: VINP-2.3V to VINP+0.5V Operating Temperature Range: -40C to 85C Storage Temperature Range: -55C to 150C Electrostatic discharge to ANSI/ESDA/JEDEC JS-001-2014 for HBM: +/- 2kV for all pins PACKAGE AND PINOUT Figure 3: Figure 4: Package diagram for 9-bump 1.2mm 1.0mm Package diagram for 10-lead, 3mm 3mm DFN WLP. Horizontal pitch is 0.4mm and the vertical pitch is 0.35mm. PIN Pin Name Pin Number Description DESCRIPTION WLP DFN RSVD C3 1 Reserved. Connect to VINP during normal operation VINP B3 2 Positive potential of the input voltage VOUT C2 3 Output connection ADC REF B1 4 Reference clock of the ADC measurement. Connect to GND if not used ADC DATA C1 5 Data output of the ADC measurement. Connect to GND if not used LX2 A1 6 Connection of LX2 of the transformer LX1 A2 7, 8 Connection of LX1 of the transformer VINM A3 9, 10 Negative potential of the input voltage GND B2 EP Ground connection 2 MATRIX Industries 1455 Adams Drive 1190 Menlo Park, CA 94025 +1 650-462-1003 www.matrixindustries.com info matrixindustries.com