CBC-EVAL-10B EnerChip CC EH Evaluation Kit

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DS-72-40 Rev C

Page 8 of 17

EVAL-10B CCEH Operation During EnerChip Battery Charging

The following scope traces show the operation of the EnerChip CBC3150 operation under two different light

conditions. The scope trace in Figure 4 was taken under a light source of 500 Lux on the EVAL-10B solar cell.

The Input voltage trace on the top line in Yellow shows the activity at Test Point TP3. The input voltage is at 3.6

Volts until the EnerChip Charging Circuit activates as shown on the second trace which is the activity on the

RESET/ pin on the CBC3150. The EVAL-10B 3.3V output voltatge during these activites is shown in the green

trace.

Input = 3.60V until charger starts then drops to

3.06V as charger dranis input capacitor

RESET/ ON = Charger

Output = 3.3V

Input = 3.60V until charger starts then drops to

3.06V as charger dranis input capacitor

Input = 3.25V until charger starts then drops to

3.06V as charger dranis input capacitor

RESET/ ON = Charger

Output = 3.3V

The scope trace in Figure 5 was taken under a light source of 100 Lux on the EVAL-10B solar cell. The Input

voltage trace on the top line in Yellow shows the activity at Test Point TP3. Given the decrease in light level,

the input voltage is at 3.25 Volts until the EnerChip Charging Circuit activates as shown on the second trace

which is the activity on the RESET/ pin on the CBC3150 which has a shorter pulse width in low light conditions.

The EVAL-10B 3.3V output voltatge is still preserved in this case as shown in the green trace.

Figure 4 : EVAL-10B operation at 500 Lux light intensity

Figure 5 : EVAL-10B operation at 100 Lux light intensity