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1. (WO2018202403) A SYSTEM AND METHOD FOR TEMPERATURE CONTROL IN AN ELECTRICALLY HEATED AEROSOL-GENERATING DEVICE

Pub. No.:    WO/2018/202403    International Application No.:    PCT/EP2018/059477
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri Apr 13 01:59:59 CEST 2018
IPC: A24F 47/00
Applicants: PHILIP MORRIS PRODUCTS S.A.
Inventors: ROBERT, Jacques
COURBAT, Jerome Christian
BESSANT, Michel
Title: A SYSTEM AND METHOD FOR TEMPERATURE CONTROL IN AN ELECTRICALLY HEATED AEROSOL-GENERATING DEVICE
Abstract:
A control unit (1) for an aerosol-generating device (2), the aerosol-generating device (2) comprising a resistive heater (3) and a battery (4), wherein the battery (4) is configured to generate a battery voltage (Vbat), wherein said control unit (1) comprises: a DC/DC converter (11) arranged to receive as input the battery voltage (Vbat) from the battery and to output an output voltage (Vheater) to the resistive heater (3); a microcontroller (12) configured to control said DC/DC converter (11) to adjust the output voltage based on a predetermined temperature profile for the resistive heater (3). Using a DC/DC converter to adjust the DC voltage applied to the resistive heater has significant advantages over using pulse width modulation (PWM) alone, particularly when the mass of the resistive heater is low.