CBC-EVAL-10 Cymbet Corporation, CBC-EVAL-10 Datasheet - Page 2

• Manufacturer Part Number: CBC-EVAL-10
• Description: ENERCHIP CC SEH EVAL KIT
• Manufacturer: Cymbet Corporation
• Series: EnerChip™ CCr
• Type: Energy Harvestingr

Specifications of CBC-EVAL-10

• Main Purpose: Power Management, Renewable Energy
• Embedded: No
• Utilized Ic / Part: CBC3150, CBC51100
• Primary Attributes: Thin Film Rechargeable Solid State Battery
• Secondary Attributes: Solar Energy Harvester
• Maximum Operating Temperature: + 70 C
• Product: Power Management Development Tools
• For Use With/related Products: EnerChip CBC51100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 859-1012

DS-72-20 Rev A
Operating Modes
CBC-EVAL-10 can be configured to operate in any of three modes, as required by the application. The operating
mode is set by configuring the various jumpers on the CBC-EVAL-10. [See Figure 3 and the associated tables for
jumper settings associated with each of the operating modes.] The three operating modes are as follows:
1.
2.
3.
In all operating modes, the input power source - whether PV cells, EnerChips, or external battery - passes
through a linear drop-out regulator (LDO) that supplies power to VOUT. The LDO output voltage is set at 2.5V
but can be modified to 3.0V - through selection of J12 and J13 solder traces - or to 2.2V or 3.3V by replacing
regulator U4 with regulator U6 (not populated) as indicated in the schematic of Figure 4 and Table 1: CBC-
EVAL-10 Bill of Materials. A power-on-reset (POR) circuit drives the LDO ENABLE pin in all operating modes
except when an external non-rechargeable battery is providing power to the LDO. To avoid starving the external
system elements of power particularly during start-up or when pulse currents are required by the system, the
POR circuit enables the LDO only after the output capacitors are fully charged to a voltage above the LDO
drop-out voltage. Consequently, the user must recognize the relationship between the POR trip voltage and the
LDO turn-on voltage when designing with a POR/LDO combination other than the components installed on the
CBC-EVAL-10 module.
Standard energy harvesting mode using PV cells, on-board EnerChips, regulated output voltage, and
switchover control circuit to ensure a seamless transition from PV power to EnerChips when little or no
ambient light is available. In this mode, power from the PV cells is used to power the system load and
charge the EnerChips when sufficient light is available. With very low or no ambient light, the system
operates from on-board EnerChips. Variations of this mode are configured using jumper select pins J11,
allowing the user to drive the internal charge pump of the CBC3150 through one of three control methods,
as indicated on the silk screen next to J11:
Energy harvesting mode that relies on not only the on-board EnerChips for energy storage, but also taps
into the capacity of a conventional non-rechargeble battery when the EnerChips are at low state-of-charge,
such as during extended periods of darkness. Typical batteries might be 2-series alkaline cells, primary
coin cells, or certain cylindrical cells having output voltage of 3V to 3.6V. This ‘battery assist’ energy
harvesting mode can be used to supplement conventional batteries, extending their operational life by
months or years.
Energy harvesting mode that uses not only the PV cells and on-board EnerChips, but also an external
rechargeable battery such as a rechargeable coin cell or other small, Li-ion or Li-polymer cells having a
charging voltage of ~4.1V. This ‘extra capacity’ operating mode allows the designer to incorporate a higher
capacity rechargeable battery in order to achieve longer system run-time in periods of darkness than what
the EnerChips can provide, while avoiding the relative bulk associated with non-rechargeable cells.
a) EH: External control using the BATOFF control line. Used when an external microcontroller derives
b) CCEH: CBC3150 RESET/ output is fed to CBC3150 ENABLE input in a standard transducer
c) CPEH: VIN controls the CBC3150 ENABLE line. When the input transducer voltage falls below 2.5V,
input from CHARGE/ in an ‘energy-aware’ operating mode.
impedance matching mode.
the CBC3150 charge pump is disabled.
©2011 Cymbet Corporation • Tel: [phone] • www.cymbet.com
CBC-EVAL-10 EnerChip CC EH Evaluation Kit
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