1. Constant current charging circuit for power pulsing
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

2. Typical approaches for power pulsing, (power delivery aspect)
Use local storage capacitors, near the point
of power dissipassion.
- Add linear voltage regulators or DC/DC converters when required
- Switch off the load, not the power supply voltage (power down/sleep logic of devices ) in order to keep the bypass/filter capacitor charged.
- Use a constant current storage capacitor charging circuit
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

3. Neglected aspect: the power feed
Suggestion:
Use a constant current charging circuit for the storage capacitors:
Charging current adjusted to the average current
Maximum feed current << load peak current
DC like power feed (no mechanical vibration)
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

4. Constant current charging system
V(t)
Charging at constant current
Power feed
Load on t
i(t)
Voltage regulator/
DC-DC converter
Controlled current source
V(t)
Pulsed load
Control
loop
Storage capacitor
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

5. SPICE model for the constant current charging
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

6. J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

7. J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011

8. J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011
J.P. Martin, UdeM, Power pulsing workshop, Orsay, May 11, 2011