Clock-controlled DC converter

US4271461A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Kurt Hoffmann · Taufkirchen, DE
• Karl Zapf · Munich, DE

Key dates

• Filing date: May 4, 1979
• Grant date: Jun 2, 1981
• Expiry date: May 4, 1999

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02M3/07
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A clock-controlled dc converter is provided in integrated semiconductor MOS technology and serves the supply voltage of integrated MOS circuits, particularly dynamic memories. The converter comprises a clock pulse generator having two outputs, supplying sequences of clock pulses which are inverted with respect to one another, which pulses are connected to the two clock pulse inputs of a first pulse level shifter. The first pulse level shifter comprises a bistable flip-flop lying at a supply potential, and which is switched as a level shifter. The two outputs of the first level shifter are connected, on the one hand, to the output of a voltage converter by way of the source-drain circuit of a respective field effect transistor. On the other hand, the two outputs are connected to the supply input of a respective pulse voltage doubler, which are in turn directly charged by a respective output of the clock pulse generator. The two pulse voltage doublers supply the clock pulse supply for a second pulse level shifter, likewise constructed as a bistable flip-flop, by way of the two outputs of which the connection between the outputs of the first level shifter and the output of the voltage…