Semiconductor device
AssigneeRohm Co., Ltd.
InventorHideo Hara
Life of this patent
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Abstract
A semiconductor device includes high-side and low-side switching elements connected in series to form a switching arm, a high-side driver IC for driving the high-side switching element, and, on a chip separate from the high-side switching element, a low-side driver IC for driving the low-side switching element. The driver IC includes a first controller for monitoring a switching voltage appearing at the node where the high-side and low-side switching elements are connected together. When a first driving control signal fed in from outside the semiconductor device instructs to turn on the high-side switching element, the first controller determines whether or not to permit the high-side switching element to be turned on based on a result of checking the switching voltage.
Claims3
A semiconductor device comprising:
- a high-side switching element and a low-side switching element connected in series between an input voltage and a ground potential to form a switching arm;
- a high-side driver IC configured to drive the high-side switching element;
- and
- a low-side driver IC configured to drive the low-side switching element, the low-side driver IC being a chip separate from the high-side driver IC,
- wherein
- the high-side driver IC includes a first controller configured to monitor a switching voltage appearing at a node where the high-side and low-side switching elements are connected together, and
- when a first driving control signal fed in from outside the semiconductor device instructs to turn on the high-side switching element, the first controller determines whether or not to permit the high-side switching element to be turned on based on a result of checking whether the switching voltage is higher than the input voltage.
Dependencies are inferred from the claim text.