Patent
Switched-Capacitor Charge Pumps
Reads0
Chats0
TLDR
In this article, a two-phase charging circuit, cross-coupled transistors connected to output nodes of the switched capacitors, and a pump output connected to source terminals of the transistors are described.Abstract:
A switched-capacitor charge pump comprises a two-phase charging circuit, cross-coupled transistors connected to output nodes of the switched capacitors, and a pump output connected to source terminals of the cross-coupled transistors. The charge pump has side transistors for boosting charge transfer, and gating logic of the side transistors includes level shifters which control connections to the pump output or a reference voltage. Negative and positive charge pump embodiments are provided. The charging circuit advantageously utilizes non-overlapping wide and narrow clock signals to generate multiple gating signals. The pump clock circuit preferably provides independent, programmable adjustment of the widths of the wide and narrow clock signals. An override mode can be provided using clamping circuits which shunt the pump output to the second nodes of the switched capacitors.read more
Citations
More filters
Patent
Peak power reduction methods in distributed charge pump systems
TL;DR: In this paper, a distributed charge pump system uses a delay element and frequency dividers to generate out of phase pump clock signals that drive different charge pumps, to offset peak current clock edges for each charge pump and thereby reduce overall peak power.
Patent
High Voltage Word Line Driver
TL;DR: In this paper, the pull-up and pull-down transistors are coupled to a DRAM cell, and the source is coupled to the drain of the pulldown transistor, the drain to the word line and the gate to a pulldown clamp gate signal.
Patent
Ground referenced single-ended signaling
TL;DR: In this paper, a transmitter combines a direct current (DC) to DC converter including a flying capacitor with a 2:1 clocked multiplexer to drive a single-ended signaling line.
Patent
High efficiency charge pump
TL;DR: A charge pump circuit includes a first and second charge pumps, each of which has a boosting unit to respectively initialize and boost a voltage, a transmission transistor to transmit the boosting voltage to an output node, and a control unit to control the transmission transistor.
Patent
Data-driven charge-pump transmitter for differential signaling
TL;DR: In this article, a transmitter combines a direct current (DC) to DC converter including a capacitor with a 2:1 multiplexer to drive a pair of differential signaling lines.
References
More filters
Journal ArticleDOI
On-chip high-voltage generation in MNOS integrated circuits using an improved voltage multiplier technique
TL;DR: An improved voltage multiplier technique has been developed for generating +40 V internally in p-channel MNOS integrated circuits to enable them to be operated from standard +5- and -12-V supply rails.
Journal ArticleDOI
An experimental 1.5-V 64-Mb DRAM
Y. Nakagome,Tanaka Haruhiko,Kan Takeuchi,E. Kume,Y. Watanabe,Toru Kaga,Yoshifumi Kawamoto,Fumio Murai,R. Izawa,Digh Hisamoto,T. Kisu,Takashi Nishida,Eiji Takeda,K. Itoh +13 more
TL;DR: In this paper, an accurate and speed-enhanced half-V/sub CC/ voltage generator with a current-mirror amplifier and tri-state buffer is proposed to reduce data transmission delay.
Journal ArticleDOI
Switching noise and shoot-through current reduction techniques for switched-capacitor voltage doubler
Hoi Lee,Philip K. T. Mok +1 more
TL;DR: In this article, a cross-coupled voltage doubler with a break-before-make mechanism is adopted to minimize the shoot-through current, thereby greatly reducing the no-load supply current dissipation and improving the light-load power efficiency.
Patent
High voltage generating charge pump circuit
Shiho Kim,Jorgo Tsouhlarakis +1 more
TL;DR: In this paper, a multi-stage charge pump circuit with a particular structure for at least one of the stages is presented, which is especially suited for use in an integrated memory device.
Patent
Charge pump circuit
TL;DR: In this paper, a plurality of driving elements are connected to each other in a cascaded form in order to provide a charge pump circuit preventing influence of body effect, where a substrate connected to the second node, a gate connected to first node, and a drain connected to input terminal, is provided.