| 摘要 |
The present invention is concerned with an electronic circuit (C) that comprises a first electronic sub-circuit (uC) having an operating voltage that is higher than a supply voltage ( Vbat) provided by a voltage source (V), and a second electronic sub-circuit (B) that is coupled to the voltage source (V) and to a first voltage input (VI1 ) of the first electronic sub-circuit (uc), wherein said second electronic sub-circuit (B) comprises a short-time voltage boosting circuit (L1, D1, C1, TA1 ) that is adapted to provide a voltage at the first voltage input (VI1 ) for a period long enough to enable a start-up of the first electronic sub-circuit (uC) when the short- time voltage boosting circuit (L1, D1, C1, TA1 ) is triggered and a controllable voltage boosting circuit (L1, D1, T1, C1 ) that is adapted to provide a boosted voltage at the first voltage input (VI1 ), which controllable voltage boosting circuit (L1, D1, T1, C1 ) is coupled to a control output (CO) of the first electronic sub-circuit (uC) to receive a control signal, and wherein said period is long enough to also allow starting the control of the controllable voltage boosting circuit (L1, D1, T1, C1 ) by the first electronic sub-circuit (uC).
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