Download Enabling Aggressive Voltage Scaling for Real-Time

70
Figure 42 shows the closed loop control of Flexible Battery Charging Module. The output
voltage is set to 7.4V. When input voltage is less than the output voltage, FBCM runs in
Boost Mode as seen in the first part of the waveform. When input voltage is more than the
output voltage, FBCM runs in Buck Mode as seen in the third part of the waveform. During
transition phase from boost converter to buck converter is when the output is disconnected
and converters are switched off as shown in the transition region of the waveform. This phase
can be configured by specifying the input voltage band around the set output voltage for
transition. The transition region can be narrowed by implementing better algorithms.