US 10,707,773 B2Granted

Energy acquisition and power supply system

AssigneeNational Cheng Kung Univsersity

InventorsShuenn-Yuh Lee, Chih-Hung Lee, Zhan-Xian Liao

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Abstract

An energy acquisition and power supply system is provided. The power supply system includes a plurality of power elements, each of the power elements including a transistor capable of conduction path switching, a current regulator having a dynamic substrate selection circuit and a reverse leakage current suppression circuit as well as a voltage regulator, wherein the dynamic substrate selection circuit selects a substrate potential of the transistor capable of conduction path switching dynamically to reduce a substrate leakage current of the transistor capable of conduction path switching, and the reverse leakage current suppression circuit is utilized for switching the power element at a local end to reduce transient reverse leakage current and current consumption of the power element at the local end for an input voltage, such that an output current for the power element at the local end is maximized.

Claims19

Dependent claims

An energy acquisition and power supply system, including:

a rectification unit for rectifying an input energy to a DC voltage lower than the input in order to perform a power supply process for a back end circuit, the rectification unit including:
a plurality of power elements for rectifying a voltage to a DC voltage by switching a conduction path for the input energy, each of the power elements including a transistor capable of conduction path switching, a current regulator having a dynamic substrate selection circuit and a reverse leakage current suppression circuit as well as a voltage regulator having an adaptive voltage control circuit, wherein the dynamic substrate selection circuit selects a substrate potential of the transistor capable of conduction path switching dynamically to reduce a substrate leakage current of the transistor capable of conduction path switching, and the reverse leakage current suppression circuit is utilized for switching the power element at a local end to reduce transient reverse leakage current and current consumption of the power element at the local end for an input voltage, such that an output current for the power element at the local end is maximized;
the adaptive voltage control circuit is used to increase a conduction voltage for lowering a conduction resistance, increasing switching speed when the power element at the local end are conducted in order to improve conversion performance;
a voltage regulation capacitor for outputting the DC voltage rectified by the power element as a DC voltage with low ripple, and
a first voltage regulation unit for stabilizing and transferring the DC voltage output by the rectification unit to the back end circuit as power supply.

2 more elements

A voltage regulation unit for an energy acquisition and power supply system used to perform voltage regulation process for a DC voltage supplied to a back end circuit, the voltage regulation unit including:

a temperature curvature compensation reference voltage circuit including:
a (N-1) order temperature curvature compensation positive reference voltage circuit, a (N-1) order temperature curvature compensation negative reference voltage circuit and an adder, the temperature curvature compensation reference circuit performing temperature compensation according to the DC voltage, wherein the (N-1) order temperature curvature compensation positive reference voltage circuit is used for generating a (N-1) order temperature curvature compensation positive reference voltage positively correlated with a temperature, the (N-1) order temperature curvature compensation negative reference voltage circuit is used for generating a (N-1) order temperature curvature compensation negative reference voltage negatively correlated with a temperature, and the adder is used for adding up the (N-1) order temperature curvature compensation positive reference voltage and the (N-1) order temperature curvature compensation negative reference voltage to output a temperature compensation reference voltage, in order for being applicable to a large temperature range of N order temperature curvature compensation reference voltage;
and
a high stability linear voltage regulation circuit, which includes:
an error amplifier, a stability enhancer, a conduction element and a high impedance feedback network, the error amplifier receives a DC voltage, a temperature compensation reference voltage output from the temperature curvature compensation reference voltage circuit, and a feedback voltage output from the high impedance feedback network, as well as adjusts a conduction voltage which is output for conducting the conduction element, while the stability enhancer is arranged between the error amplifier and the conduction element to enhance the stability of the entire circuit, and a steady DC voltage is converted from the received input voltage by the conduction element for the back end circuit, wherein as the output DC voltage changes with the back end circuit, the output DC voltage is fed back to the error amplifier and the stability enhancer through the high impedance feedback network for adjusting the output DC voltage, and transferred to the back end circuit via the conduction element.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/826,659Filed 29 Nov 2017
Priority: TW 106140179 A20 Nov 2017
Published: US 2019/0157983 A123 May 2019
Granted: 7 Jul 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

H02M 7/219
Using semiconductor devices only: in a bridge configuration
H02J 7/865
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: battery or charger load switching, e.g.…
H02J 50/001
Circuit arrangements or systems for wireless supply or distribution of electric power: energy harvesting or scavenging
H02M 1/143
Arrangements for reducing ripples from DC input or output: using compensating arrangements