Dual-output voltage regulator
AssigneeArques Technology
InventorsKwang H. Liu, Sorin L. Negru, Terry Groom, Fu-Yuan Shih, Te-Jen Hsieh
Life of this patent
Estimating the term…
Abstract
A dual-output voltage regulator is disclosed, which provides a first terminal voltage and a second terminal voltage to DDR DRAM. The dual-output voltage regulator comprises a first regulator unit for receiving an input voltage and providing the first terminal voltage via a first transistor unit; and a second regulator unit for receiving the input voltage and the first terminal voltage in order to output the second terminal voltage, wherein the second terminal voltage is half of the first terminal voltage.
Claims35
A dual-output voltage regulator packaged in a 5-pin chip providing a first terminal voltage and a second terminal voltage to double data rate (DDR) DRAM, comprising:
- a first regulator unit including a first transistor unit and a comparator unit, the first regulator unit receiving an input voltage and providing the first terminal voltage via the first transistor unit, the comparator unit connected to one of the pins for inputting a shutdown signal via this pin, rendering the comparator unit with shutdown function;
- and
- a second regulator unit including a second transistor unit, a third transistor unit and a divided voltage unit, the second regulator receiving the input voltage and the first terminal voltage such that the divided voltage unit provides a plurality of reference voltages for directing the second transistor to output the second terminal voltage, wherein the second terminal voltage is half the first terminal voltage and the second regulator. unit is capable of sourcing current and sinking current.
A dual-output voltage regulator packaged in a 5-pin chip providing a first terminal voltage and a second terminal voltage to double data rate DDR DRAM, comprising:
- a first regulator unit including a first transistor unit and a comparator unit, the first regulator unit receiving an input voltage from a PC system and providing the first terminal voltage via the first transistor unit, the comparator unit connected to one of the five pins to provide a shutdown function by inputting a shutdown signal via the said pin;
- and
- a second regulator unit including a first Darlington pair circuit and a second Darlington pair circuit, and receiving the input voltage and the first terminal voltage to output the second terminal voltage, wherein the second terminal voltage is one half of the first terminal voltage, and the second regulator unit is capable of sourcing current and sinking current.
Dependencies are inferred from the claim text.