Precision rectifier

About: Precision rectifier is a research topic. Over the lifetime, 4952 publications have been published within this topic receiving 63668 citations. The topic is also known as: super diode.

Method of making a high voltage rectifier for an integrated circuit chip

Abstract: A high voltage alternating current rectifier circuit for an NMOS or CMOS transistor environment in which four N-channel transistors are simultaneously fabricated distant from a utilization circuit, such as one or more EEPROM transistors. The four N-channel transistors have lightly doped sources and drains formed prior to the time gates are formed, the doping concentrations and the thickness of oxide overlying the gates selected to establish breakdown voltages exceeding 20 volt peaks. This allows an input spiral antenna or other inductor to be used for coupling radio frequency energy and signals from a remote source to a chip having a utilization circuit employing the rectifier circuit as a source of power.

A novel phase control of semi bridgeless active rectifier for wireless power transfer applications

Abstract: A novel phase control of a semi-bridgeless active rectifier (S-BAR) is investigated in order to utilize the S-BAR in wireless energy transfer applications. The standard receiver side rectifier topology is developed by replacing rectifier lower diodes with synchronous switches controlled by a phase-shifted PWM signal. Theoretical and simulation results show that the performance of the proposed S-BAR is appropriate for resonant converters that require power control at the secondary side such as contactless energy transfer systems. To confirm the performance of the proposed converter and control, experimental results are provided for a 1 kW prototype using 3, 6, and 9 inches air gap coreless transformer, which has dimension 2.5 by 2.5 feet, with 120 V input and the output voltage range of 0 to 95 V with a maximum efficiency of 94.4%.

A new DVCC-based fully cascadable voltage-mode full-wave rectifier

Abstract: In this paper, a new voltage-mode (VM) full-wave rectifier circuit employing two plus-type differential voltage---current conveyors, two grounded resistors, and two diodes is proposed. The proposed full-wave rectifier enjoys high input impedance and low output impedance; accordingly, it is suitable for direct cascading with other VM circuits without requiring additional buffers. It employs only two grounded resistors which are advantageous for integrated circuit implementations. However, it needs a single resistor-matching condition. It is simulated using SPICE program to verify the theoretical analysis.

A new, soft-switched, high-power-factor boost converter with IGBTs

Abstract: A new soft-switching technique that improves performance of the high-power-factor boost rectifier by reducing switching losses is introduced. The losses are reduced by an active snubber which consists of an inductor, capacitor, rectifier, and an auxiliary switch. Since the boost switch turns off with zero current, this technique is well suited for implementations with insulated-gate bipolar transistors. The reverse-recovery-related losses of the rectifier are also reduced by the snubber inductor which is connected in series with the boost switch and the boost rectifier. In addition, the auxiliary switch operates with zero-voltage switching. A complete design procedure and extensive performance evaluation of the proposed active snubber using a 1.2 kW prototype operating from a 90 V/sub rms/-265 V/sub rms/ input are also presented.

Double-ended isolated DC-DC converter

Abstract: In a double-ended isolated DC-DC converter, by using a main transformer and first and second pulse transformers, a first power switch of a primary side circuit and a first synchronous rectifier of a secondary side circuit are driven with complementary timing, and a second power switch of the primary side circuit and a second synchronous rectifier of the secondary side circuit are driven with complementary timing. A first turn-off edge signal and a first turn-on edge signal generated in a primary side control circuit are transmitted to the secondary side via the first pulse transformer so as to generate a driving signal of the first synchronous rectifier. In addition, a second turn-off edge signal and a second turn-on edge signal generated in a primary side circuit are transmitted to the secondary side via the second pulse transformer so as to generate a driving signal of the second synchronous rectifier.