Aerosol-generating device and method for controlling a heater of an aerosol-generating device

A method of controlling a heater in an aerosol-generating device,

• the device comprising:
• a heater comprising at least one heating element configured to heat an aerosol-forming substrate, and
• a power source configured to provide power to the at least one heating element;
• and
• the method comprising the steps of:
• controlling power provided to the at least one heating element such that
• in a first phase, power is provided to increase a temperature of the at least one heating element from an initial temperature to a first temperature, and
• in a second phase, power is provided to decrease the temperature of the at least one heating element below the first temperature to a second temperature,
• wherein the power provided to the at least one heating element during the first phase is increased at least once during a duration of the first phase, and
• wherein aerosol is produced during the second phase.

An electrically operated aerosol-generating device, comprising:

• at least one heating element configured to heat an aerosol-forming substrate to generate an aerosol;
• a power supply configured to supply power to the at least one heating element;
• and
• electric circuitry configured to
• control a supply of power from the power supply to the at least one heating element, wherein the electric circuitry is arranged to:
• control power supplied to the at least one heating element such that
• in a first phase, the power is provided such that a temperature of the at least one heating element increases from an initial temperature to a first temperature, and
• in a second phase, the power is provided such that the temperature of the at least one heating element drops below the first temperature to a second temperature,
• wherein the power provided to the at least one heating element during the first phase is increased at least once during a duration of the first phase, and
• wherein aerosol is produced during the second phase.

A method of controlling an electrical heating element in an aerosol-generating device,

• the device comprising:
• a heater comprising at least one heating element configured to heat an aerosol-forming substrate, and
• a power source configured to provide power to the at least one heating element;
• and
• the method comprising:
• controlling the power provided to the at least one heating element in a preheating mode, the preheating mode comprising providing power to the at least one heating element to increase a temperature of the at least one heating element from an initial temperature to a preheating target temperature,
• wherein the power provided in the preheating mode to the heater is increased according to a predetermined power profile.