US4594541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching regulator using dual slope sawtooth generator
Assignee: Siemens AG
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Filing: 1984-09-11
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Granted: 1986-06-10
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Expires: 2004-09-11
Abstract
Abstract A switching regulator comprises an electronic switch which can be periodically switched on at prescribed turn-on times with the assistance of a clock generator and can be switched off at a time defined with the assistance of a comparator, whereby the comparator compares an actuating signal to a saw-tooth comparison voltage. Such a switching regulator should operate continuously and accurately given low output powers and at the same time have a stable behavior in the entire control range. To this end, a non-linear chronological progression of the comparison voltage that the chronological change of the comparison voltage decreases in a time segment following the turn-off time. The switching regulator can be employed with particular advantage for the feed of temperature-controlled Peltier elements which serve for cooling laser diodes.
Inventors
- 👤 Heinrich Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:01
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A switching regulator comprising: an input for receiving a voltage to be regulated, and an output; first voltage means connected to said input for producing a reference voltage; second voltage means connected to said input for producing a voltage dependent on the value of the voltage to be regulated; a differential amplifier including a pair of inputs respectively connected to said first and second voltage means; an electronic switch connected between said input and said output; a comparison voltage clock generator, including a pulse shaper, operable to emit a clocked comparison voltage having a prescribed non-linear chronological progression for switching on said electronic switch at predetermined turn-on times and decreasing in time intervals following the turn-on times; and a comparator including an output connected to said electronic switch and a pair of inputs respectively connected to said pulse shaper and said differential amplifier and operable to turn off said electronic switch when the clocked comparison voltage reaches a predetermined value following a turn-on time.
Claim 2
Dependent Claim
164 words
A switching regulator comprising: an input for receiving a voltage to be regulated, and an output; first voltage means connected to said input for producing a reference voltage; second voltage means connected to said input for producing a voltage dependent on the value of the voltage to be regulated; a differential amplifier including a pair of inputs respectively connected to said first and second voltage means; an electronic switch connected between said input and said output; a comparison voltage clock generator, including a pulse shaper, operable to emit a clocked comparison voltage having a prescribed non-linear chronological progression for switching on said electronic switch at predetermined turn-on times and decreasing in time intervals following the turn-on times; and a comparator including an output connected to said electronic switch and a pair of inputs respectively connected to said pulse shaper and said differential amplifier and operable to turn off said electronic switch when the clocked comparison voltage reaches a predetermined value following a turn-on time.
Claim 3
Dependent Claim
21 words
The switching regulator of claim 1, wherein: said comparison voltage clock generator comprises a square-wave generator connected to said pulse shaper.
Claim 4
Dependent Claim
36 words
The switching regulator of claim 2, wherein: said pulse shaper comprises a series circuit including a first resistor, a first capacitor and a third capacitor, and a second resistor connected in parallel with said first capacitor.
Claim 5
Dependent Claim
34 words
The switching regulator of claim 2, and further comprising: a resistor connecting said square-wave generator to said electronic switch; and wherein said comparator comprises an open collector output directly connected to said electronic switch.
Claim 6
Dependent Claim
41 words
The switching regulator of claim 2, wherein: said comparison voltage clock generator further comprises a further comparator including an output connected to said electronic switch and a pair of inputs respectively connected to said square-wave generator and an auxiliary voltage source.
Claim 7
Dependent Claim
51 words
The switching regulator of claim 5, wherein said pulse shaper comprises a series circuit including a first resistor, a first capacitor and a second capacitor, and a second resistor connected in parallel with said first capacitor, said second capacitor connected to said further comparator and serving as the auxiliary voltage source.
Claim 8
Dependent Claim
24 words
The switching regulator of claim 1, and further comprising: a Peltier element connected to said output for controlling the temperature of an operating device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |