Load driving device
AssigneeDenso Corporation
InventorsKoki Nagura, Hideki Kabune
Life of this patent
Estimating the term…
Abstract
A power converter of a load drive device is provided between a power supply line and a ground line connected to the battery, and converts a direct-current power of the battery and supplies it to a load. A booster circuit boosts a voltage of the battery supplied via the power supply line. A post-boost capacitor is charged with a boosted voltage by the booster circuit. A specific regulator operates a target circuit when a voltage equal to or higher than a lower limit value is applied via a power supply path. At least the voltage charged in the post-boost capacitor is applied to the specific regulator.
Claims10
A load driving device, comprising:
- a power converter provided between a power supply line and a ground line connected to a battery, and configured to convert a direct-current power of the battery and supply it to a load;
- a booster circuit configured to boost a voltage of the battery supplied via the power supply line;
- a post-boost capacitor configured to be charged with a boosted voltage by the booster circuit;
- and
- a specific regulator configured to operate a target circuit when a voltage equal to or higher than a lower limit value is applied via a power supply path;
- wherein
- the power supply path includes
- a first power supply path that is directly connected from the power supply line to the specific regulator and is configured to apply the battery voltage to the specific regulator;
- and
- a second power supply path that branches from the first power supply path and is connected to the specific regulator via the booster circuit and the post-boost capacitor, and
- each of the first power supply path and the second power supply path includes a reverse-current blocking element, and
- at least the voltage charged in the post-boost capacitor is applied to the specific regulator.
A load driving device, comprising:
- a power converter provided between a power supply line and a ground line connected to a battery, and configured to convert a direct-current power of the battery and supply it to a load;
- a power converter capacitor connected in parallel with the power converter between the power supply line and the ground line, and configured to be charged with a voltage applied to the power converter;
- and
- a specific regulator configured to operate a target circuit when a voltage equal to or higher than a lower limit value is applied via a power supply path;
- wherein
- the power supply path connects a high-potential terminal of the power converter capacitor to the specific regulator and includes a reverse-current blocking element, and
- at least a voltage charged in the power converter capacitor is applied to the specific regulator.
Dependencies are inferred from the claim text.