CBC-EVAL-08 Cymbet Corporation, CBC-EVAL-08 Datasheet - Page 3

• Manufacturer Part Number: CBC-EVAL-08
• Description: ENERCHIP EH SEH EVAL KIT
• Manufacturer: Cymbet Corporation
• Series: EnerChip™ EHr
• Type: Energy Harvestingr

Specifications of CBC-EVAL-08

• Main Purpose: Power Management, Renewable Energy
• Embedded: No
• Utilized Ic / Part: CBC5300
• Primary Attributes: Thin Film Rechargeable Solid State Battery
• Secondary Attributes: Solar Energy Harvester
• Input Voltage: 4.06 V
• Output Voltage: 3.55 V
• Board Size: 90.2 mm x 50.8 mm
• Maximum Operating Temperature: +70 C
• Minimum Operating Temperature: 0 C
• Product: Power Management Modules
• Dimensions: 90.2 mm x 50.8 mm
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Request inventory verification / Request inventory verification
• Other names: 859-1002

Connecting CBC-EVAL-08 to the System
The CBC-EVAL-08 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 life. The table below
describes the functionality of the J1 and J5 connector pins.
DS-72-08 Rev18
(not accessible from the J1 connector)
•
current. It provides power to the system according to the Operating Characteristics table shown below.
•
•
through an isolation pass transistor. The voltage on V
voltage at V
disconnected from external circuits. In no event should V
power to a load.
•
be disconnected from the charging source of the CBC-EVAL-08. 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 CBC-EVAL-08 behaves normally. In other words, when
BATOFF is low the EnerChips will always be charging when sufficient input power is available.
•
»
EnerChips have been charged.
»
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.
V
GND is the ground connection of the CBC-EVAL-08. It is to be connected to the system ground line.
V
BATOFF is typically controlled by a microcontroller I/O line. When driven high, the on-board EnerChips will
CHARGE is an output signal from the CBC-EVAL-08 that will be forced low under one of two conditions:
When transducer output power is very low, a low level on CHARGE indicates that the
CHARGE will also be driven low when transducer output power is more than sufficient to operate
OUT2
BAT
is normally used for factory test purposes. It is indirectly connected to the on-board EnerChips
is the DC output voltage from the CBC-EVAL-08 and is approximately 3.5V depending on load
CHARGE
BATOFF
OUT2
V
GND
Pin
V
OUT2
BAT
is one diode drop lower than the voltage on V
©2009 Cymbet Corporation • Tel: [phone] • www.cymbet.com
Circuit Recommendations to Save Power for additional information.
the section Circuit Recommendations to Save Power for additional
EnerChips from the CBC-EVAL-08 charging circuit. See the section
Connected indirectly to the EnerChips’ positive terminals through
Active low output from the CBC-EVAL-08 indicating that the Ener-
an isolation FET. Voltage is one diode drop above the potential at
EnerChip Solar Energy Harvesting Demo Kit
J1 and J5 Pin Descriptions
drain output with an internal 10MΩ pull-up resistor to V
Chips have been charged or are being charged. This is an open
Input control line to the CBC-EVAL-08 for disconnecting the
BAT
is connected to V
BAT
be used for any purpose other than to provide
System ground
Designation
System power
BAT
information.
. It is recommended that V
V
OUT2.
OUT2
by a diode and thus the
BAT
OUT2
remain
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