A Charge Pump with Low Power Consumption and High Output Voltage

A charge pump and high-output technology, which is applied in the direction of output power conversion devices, electrical components, and conversion equipment without intermediate conversion to AC, can solve problems such as difficult bias voltage, and achieve adjustable output voltage, reliable performance, The effect of high topological capability

Active Publication Date: 2018-05-25
苏州昆泰芯微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As integrated circuit technology continues to advance, supply voltages continue to shrink with typical dimensions, making it increasingly difficult to generate higher bias voltages

Method used

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  • A Charge Pump with Low Power Consumption and High Output Voltage
  • A Charge Pump with Low Power Consumption and High Output Voltage
  • A Charge Pump with Low Power Consumption and High Output Voltage

Examples

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Embodiment Construction

[0027] Such as figure 1 As shown, a charge pump with low power consumption and high output voltage disclosed by the present invention includes a bias circuit, a digital-to-analog conversion circuit, a charge pump main circuit connected in sequence, and a digital I connected to the digital-to-analog conversion circuit. 2 C circuit, the digital-to-analog conversion circuit is based on the bandgap reference voltage vbg output by the bias circuit, and is simultaneously affected by the digital I 2 The input control of the C circuit outputs the analog voltage dac_out; the main circuit of the charge pump takes the analog voltage dac_out as the reference, and under the control of the sequential clock, generates the final high voltage through the multi-stage charge pump unit.

[0028] Such as figure 2 As shown, the main circuit of the charge pump includes a clock oscillator and several stages of charge pump units cascaded in sequence. 2 The input control of the C circuit, the analog...

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PUM

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Abstract

The invention discloses a charge pump with low power consumption and high output voltage, and can digitally control the output voltage range. The circuit includes a bias circuit, a digital-to-analog conversion circuit, a charge pump main circuit connected in sequence, and a digital I2C circuit connected to the digital-to-analog conversion circuit. The main circuit of the charge pump includes a clock oscillator and sequentially cascaded charge pump units. The analog voltage generated by the digital-to-analog conversion circuit is simultaneously used as the operating voltage of the clock oscillator and the input voltage of the first-stage charge pump unit, and the clock The oscillator generates two sets of non-overlapping clocks, the first set is connected to the switch of each charge pump unit, and the second set is respectively connected to the terminals between the charge pump units of each stage through the inter-pump capacitor C. The invention provides a higher output voltage, and the output voltage is adjustable, and simplifies the circuit structure, reduces power consumption, and creatively adopts the forward conduction mode of the MOS transistor drain-lined diode to transfer the charge, which greatly reduces the The stabilization time of the system.

Description

technical field [0001] The invention relates to a charge pump, in particular to a charge pump with low power consumption and high output voltage. Background technique [0002] A charge pump is a circuit that generates a high DC voltage from a low voltage. Charge pumps are widely used in many circuit systems, for example: non-volatile memory requires higher voltage than conventional circuits, volatile memory requires high voltage to achieve faster operating speed, LCD screen requires high voltage to control contrast etc. [0003] In recent years, the rapid development of portable battery-driven consumer electronics has put forward higher requirements on the power consumption of the charge pump. As integrated circuit technology continues to advance, supply voltages continue to shrink with typical dimensions, making it increasingly difficult to generate higher bias voltages. Therefore, it is particularly important to design a charge pump circuit with low power consumption an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/07
CPCH02M3/07H02M1/0012H02M1/007
Inventor 武建峰
Owner 苏州昆泰芯微电子科技有限公司
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