Turn-on controller for switch-mode regulator

Details Turn-on controller for switch-mode regulator Turn-on controller for switch-mode regulator

1994-03-17

2000-09-19

Nguyen, Matthew

Electricity: power supply or regulation systems

Output level responsive

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

G05F 156

Patent

active

061217603

ABSTRACT:
A switch-mode power regulator includes a turn-on controller 52 to limit, during a fixed period of time, the initial current passing through the regulator following turn-on. During this time period the storage elements of the regulator must achieve an acceptable level of stability without excessive current flow. Turn-on controller 52 comprises a divider 72 which clocks zeroes along the length of a shift register 74 which is initially preset to all ones. The outputs of the shift register are coupled to a decoder 76, whose input signals are sequentially steered to its output under the control of a counter 70. The output signal from decoder 76 functions as the power regulator switching signal from turn-on controller 52. Counter 70 cycles many times for each data shift of shift register 74. Thus, turn-on controller 52 generates a train of negative pulses which increase in length monotonically for the duration of the sequence. In one embodiment, the first two data inputs of decoder 76 are grounded, thereby providing a fixed minimum pulse width at the onset of the sequence. In another embodiment, the last two data inputs of decoder 76 are tied to logic supply voltage, thereby preventing cycle skipping.

REFERENCES:
patent: 4325021 (1982-04-01), McMackin
patent: 4553082 (1985-11-01), Nesler
patent: 5079498 (1992-01-01), Cleasby et al.
patent: 5233508 (1993-08-01), Yamamura et al.
"Unique Monolithic Power Switching Regulator Allows Simple and Efficient DC/DC Converter Design," J. H. Alberkrack and E. W. Tisinger, PCIM (Power Conversion & Intelligent Motion, Sep. 1990, pp. 53-58.

Affiliated with

Also associated with

Rating

Turn-on controller for switch-mode regulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Turn-on controller for switch-mode regulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turn-on controller for switch-mode regulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1076744