Control system for a voltage converter
View Patent ↗The invention relates to a control system for a voltage converter, said control system comprising:—a set of switches (T 1 -T 2 -T 3 -T 4 ) intended to be connected via output terminals (N 1 -N 2 -N 3 ) to a first type of voltage converter or to a second type of voltage converter,—detection means (DET) to generate a detection signal (DS) indicating the type of converter connected,—a circuit (CIR) intended to generate, from said detection signal (DS), control signals (CS 1 -CS 2 -CS 3 -CS 4 ) to control said switches (T 1 -T 2 -T 3 -T 4 ).
1. A control system for a voltage converter, said control system comprising:
a first switch, a second switch, a third switch and a fourth switch connected in series,
said first switch having a first output terminal,
the common terminal of said first switch and said second switch defining a second output terminals,
the common terminal of said second switch and said third switch being intended to be connected to an input voltage,
the common terminal of said third switch and said fourth switch defining a third output terminals,
said fourth switch having another output terminal intended to be connected to a ground potential,
said first, second and third output terminals being intended to be connected to a voltage converter of a first type or to a voltage converter of a second type,
detection means connected to said third output terminal, to generate a detection signal indicating said first type or said second type of voltage converter,
a circuit intended to generate, from a clock signal and said detection signal, control signals intended to control said first, second, third and fourth switches.
2. A control system as claimed in the claim 1 , wherein the detection means comprise:
means for injecting a current at said third output terminal,
comparing means to compare the potential of said third output terminal, with a reference potential.
3. A control system as claimed in claim 1 , wherein said voltage converter of a first type comprises:
an inductance connected between said input voltage and said third output terminal,
a diode connected between said first output terminal and said second output terminal.
4. A control system as claimed in claim 1 , wherein said voltage converter of a second type comprises a capacity connected between said second output terminal and said third output terminal (N 3 ).
5. An integrated circuit comprising a control system for a voltage converter as claimed in claim 1 .