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US 7,459,903 B1Granted
Multi-level voltage detection circuit
AssigneeInventec Corporation
InventorsSheng-Yuan Tsai, Ding-Houng Wang
Life of this patent
Estimating the term…
Abstract
A multi-level voltage detection circuit includes the comparators, the first resistors, the power signal input port and the or-gate. The first resistors and the power signal input port are electrically connected to the comparators. The or-gate is electrically connected to the outputs of the comparators. The or-gate outputs the power good signal according to the comparing result of the comparators.
Claims8
A multi-level voltage detection circuit, comprising:
- a plurality of comparators;
- a plurality of first resistors electrically connected to the comparators;
- a power signal input port electrically connected to the comparators;
- and
- an or-gate electrically connected to the comparators and having an output terminal outputting a first power good signal according to comparative results of the comparators.
2 more elements
A multi-level voltage detection circuit, comprising:
- a resistor circuit including a first resistor, a second resistor, a third resistor, and a fourth resistor electrically connected serially for dividing a reference voltage to generate a first voltage level, a second voltage level and a third voltage level;
- a first comparator electrically connected to the first resistor and the second resistor for comparing an input voltage and the first voltage level;
- a second comparator electrically connected to the second resistor and the third resistor for comparing the input voltage and the second voltage level;
- a third comparator electrically connected to the third resistor and the fourth resistor for comparing the input voltage and the third voltage level;
- and
- an or-gate electrically connected to the first comparator, the second comparator, and the third comparator, wherein the or-gate generates a first power good signal according to comparing results of the first, the second, and the third comparators.
3 more elements
Dependencies are inferred from the claim text.