EnerChip™ EH Energy Harvesting Module

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Features

The CBC5300 board has two control lines that can be connected to a microcontroller (MCU) for the purpose of conserving available energy, using incoming power efficiently, and extending EnerChip battery life. The information below describes the functionality of the connector pins.

VIN - The CBC5300 module accepts a wide range of inputs from various energy harvesting transducers. This input accepts operating voltages from 0.25 volts to 4 volts DC.

VOUT - is the DC output voltage from the CBC5300 and is approximately 3.5V depending on load current.

BATOFF - is typically controlled by a microcontroller I/O line. When driven high, the on-board EnerChips will be disconnected from the charging source of the CBC5300. This feature allows all available power to be delivered to the load rather than to charging the EnerChips, a useful mode when limited transducer power is available or when higher operating current is required from the system. When BATOFF is driven low, the interaction between the charging source and the CBC5300 behaves normally. In other words, when BATOFF is low the EnerChips will always be charging when sufficient input power is available.

CHARGE - is an output signal from the CBC5300 that will be forced low under one of two conditions. First is when transducer output is very low and a low level indicates that the EnerChips have been charged.  Second, it will be driven low when transducer output power is more than sufficient to operate the boost converter and charge the EnerChips at peak rate, regardless of the state of charge of the EnerChips. Programming an MCU timer to allow enough charging time to elapse after the assertion of CHARGE will ensure that the EnerChips are fully charged before using them to deliver power to the system. The advantage is that the system is then aware of the minimum reservoir of energy available in the event transducer power goes to zero.

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Applications

• Wireless Sensors - Create perpetual sensors with ambient energy and no batteries to change.



• Patient Monitoring - Use piezoelectric, thermoelectric, or photovoltaic transducers to power patient status sensors.



• Process Control - Sensors and reporting electronics can be powered with motion or fluid flow transducers.



• Real Time Location Monitoring - Active RFID and RTLS sensing devices can be powered using energy harvesting.



• Environmental Monitoring and Controls - Optimize energy using energy harvesting.

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Specifications

Parameter		Condition	Min	Typical	Max	Units
Parasitic Load Current		Boost Converter Off	-	800	-	nA
		Boost Converter On	-	20	-	μA
VOUT , 2μA Load		Battery Charged	3.5	3.55	3.6	V
VIN		Operating	0.25	-	4	V
VBAT Charging Voltage		25°C	-	4.06	-	V
Battery Cutoff Voltage		4.7kΩ load	3.0	3.3	3.6	V
UVLO Trip Select Voltage		25°C	-	0.7	-	V
Pulse Discharge Current		20 ms	600	-	-	μA
Self-Discharge (non-recoverable average)		25°C	-	2.5	-	% per year
Operating Temperature		-	0	25	70	°C
Recharge Cycles (to 80% of rated capacity; 4.1V charge voltage)	25°C	10% depth-of-discharge	5000	-	-	-
		50% depth-of discharge	1000	-	-	-
	40°C	10% depth-of-discharge	2500	-	-	-
		50% depth-of discharge	500	-	-	-
Recharge Time (to 80% of rated capacity)		From 50% state-of-charge	-	10	-	minutes
		From deep discharge	-	50	-	minutes
Capacity		16 μA discharge; 25°C	-	100	-	μAh

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Digi-Key P/N	Manufacturer P/N	Description	Dimensions	Datasheet
859-1000-5-ND	CBC5300-24C	ENERCHIP EH CBC5300 MODULE	0.7W x 1.2L x 0.9H