Internal step-down converter

Details Internal step-down converter Internal step-down converter

1999-09-17

2000-05-16

Berhane, Adolf Deneke

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323313, G05F 316, G05F 320

Patent

active

060641886

ABSTRACT:
An internal step-down converter includes a potential difference detector and a cross-coupled amplifier. The potential difference detector detects and amplifies a potential difference between a reference voltage VREF and an internally-stepped-down supply voltage VINT. The cross-coupled amplifier receives the amplified output VDRV2 of the potential difference detector and the output VDRV of a current-mirror differential amplifier, which is applied as a control voltage to a driver implemented as a p-channel MOSFET. The cross-coupled amplifier regulates the amplitude of the control voltage VDRV substantially at the potential difference .vertline.VDD-VSS.vertline. between the external supply voltages. As a result, the load-current-handling capability of the driver can be considerably increased. While the load current ILOAD is relatively small, a control signal generator deactivates the potential difference detector and the cross-coupled amplifier to prevent the current from being consumed in vain. Accordingly, an internal step-down converter with enhanced load-current-handling capability is provided without increasing the layout area or the current consumed.

REFERENCES:
patent: 5352935 (1994-10-01), Yamamura et al.
patent: 5373226 (1994-12-01), Kimura
patent: 5408172 (1995-04-01), Tanimoto et al.
patent: 5757226 (1998-05-01), Yamada et al.
patent: 5990671 (1999-11-01), Nagata

Affiliated with

Also associated with

Rating

Internal step-down converter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internal step-down converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal step-down converter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-261317