DC-to-DC converter having fast over-current detection and associ

Details DC-to-DC converter having fast over-current detection and associ DC-to-DC converter having fast over-current detection and associ

1997-02-14

1998-10-13

Hecker, Stuart N.

Electricity: power supply or regulation systems

Output level responsive

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

363 21, 361 57, G05F 1573

Patent

active

058217401

ABSTRACT:
A DC-to-DC converter includes a pulse width modulation circuit for modulating a switch to produce current pulses having at least a minimum pulse width to thereby control an output voltage to the load. The converter also includes a current limit determining circuit for determining when a desired peak current is no longer sufficient to maintain a desired output voltage thereby defining a current limit condition. In addition, the pulse width modulating circuit, when operating at the minimum pulse width, thereby defines a minimum pulse width condition. Accordingly, the converter preferably further includes an over-current determining circuit for determining an over-current condition responsive to the minimum pulse width condition being reached during a current limit condition. The converter may turn off the switch responsive to an over-current condition. A blanking signal may be used to clamp a comparator and established a minimum pulse width. Accordingly, a timer may also be used with the blanking signal to determine that the minimum pulse width condition has been reached. Method aspects of the invention are also disclosed.

REFERENCES:
patent: 4363064 (1982-12-01), Billings et al.
patent: 4994955 (1991-02-01), Schoofs et al.
patent: 5043674 (1991-08-01), Bonaccio et al.
patent: 5167024 (1992-11-01), Smith et al.
patent: 5233287 (1993-08-01), Lenk
patent: 5325258 (1994-06-01), Choi et al.
patent: 5338987 (1994-08-01), Tomasetti et al.
patent: 5423045 (1995-06-01), Kannan et al.
patent: 5452434 (1995-09-01), MacDonald
patent: 5457790 (1995-10-01), Iwamura et al.
patent: 5631549 (1997-05-01), Hong
patent: 5666044 (1997-09-01), Tuozzolo
patent: 5694305 (1997-12-01), King et al.

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