An aerosol-generating system and method for controlling power provided to a heater

An aerosol-generating system, comprising:

• a DC power supply configured to generate a DC supply voltage;
• and
• control circuitry configured to control a supply of electrical power from the DC power supply to a heater to aerosolize a liquid aerosol-forming substrate, the control circuitry comprising:
• a DC/DC voltage converter configured to receive the DC supply voltage as an input and to output an output voltage to power the heater, and
• a control unit configured to control the DC/DC voltage converter to adjust the output voltage based on a predetermined power profile for the heater,
• wherein the predetermined power profile comprises:
• a first time period of a user puff during which a substantially constant first power value is supplied to the heater, and
• a second time period of the user puff after the first time period during which a substantially constant second power value is supplied to the heater, and
• wherein the substantially constant second power value is less than the substantially constant first power value.

A method of controlling an aerosol-generating device, the aerosol-generating device comprising a DC power supply and control circuitry configured to control a supply of electrical power from the DC power supply to a heater to aerosolize a liquid aerosol-forming substrate, the control circuitry comprising a DC/DC voltage converter, the DC/DC voltage converter being configured to receive a DC supply voltage from the DC power supply as an input and to output an output voltage to power the heater, the method comprising:

• controlling the DC/DC voltage converter to adjust the output voltage based on a predetermined power profile for the heater,
• wherein the predetermined power profile comprises:
• a first time period of a user puff during which a substantially constant first power value is supplied to the heater, and
• a second time period of the user puff after the first time period during which a substantially constant second power value is supplied to the heater, and
• wherein the substantially constant second power value is less than the substantially constant first power value.