Balanced delta current method for current control in a hysteretic power supply
US5734259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Sep 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching voltage controller with improved rejection of supply voltage transients, wherein the switching of the voltage controller is controlled by sensing the current through an inductor to provide a current sense signal proportional to the sensed current and comparing the current sense signal voltage to the voltage of a peak signal and the voltage of a valley signal. An error amplifier provides a control signal proportional to the voltage difference between the output voltage of the voltage controller and a reference voltage source. The switching voltage controller provides for improved rejection of transients in the supply voltage by forcing the valley signal to be a first voltage differential .DELTA.' volts below the control signal and the peak signal to be a second voltage differential .DELTA." volts above the control signal, where .DELTA." and .DELTA.' are functions of the supply voltage to the voltage controller such that the rate of change of .DELTA." and .DELTA.' with respect to the supply voltage are substantially equal to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.