Infrared bias power supply module based on integrated plastic package

A bias power supply, infrared technology, applied in the field of infrared imaging, can solve the problems of large space occupied by multiple independent devices, and the bias voltage is not adjustable, and achieves the effect of facilitating miniaturization design, reducing size and volume, and being easy to carry.

Pending Publication Date: 2022-01-25
NO 24 RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a new infrared bias power supply module, which is used to solve the problems in the prior art that the bias voltage is not adjustable and multiple independent devices occupy a large space

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  • Infrared bias power supply module based on integrated plastic package
  • Infrared bias power supply module based on integrated plastic package
  • Infrared bias power supply module based on integrated plastic package

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Embodiment Construction

[0030] As mentioned above in the background technology: the bias voltage of the existing infrared thermal imaging system cannot be adjusted. If it needs to be changed, the feedback resistor needs to be re-soldered. The operational amplifier will take up a lot of space; the multiple power supply voltages of different sizes in the existing infrared thermal imaging system cannot be directly provided by the whole system. Generally, multiple DC / DC power supplies or LDO power supplies are used, which will take up a lot of space. space, and there is a lot of noise, which affects the imaging effect.

[0031] Based on this, the present invention proposes a new infrared bias power supply module suitable for infrared thermal imaging systems: on the basis of outputting multiple adjustable bias voltages and power supply voltages through the circuit structure of chips and peripheral components, Integrated packaging of the bare chip and peripheral components to reduce the size and volume of ...

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Abstract

The invention provides an infrared bias power supply module based on integrated plastic package. Based on a circuit structure design of a plurality of bare chips and peripheral components, multiple paths of bias voltages and power supply voltages of different specifications can be output at the same time, different current load capacities are provided, and the module is suitable for various application scenes; on the basis of real-time adjustment of a serial digital input signal and a modulation resistor, adjustable bias voltage and power supply voltage can be output, so that the practicability and the flexibility are further improved; in the multi-path power supply output unit, two four-path voltage regulator chips are low-noise chips, and the output ends are connected in series with noise reduction resistors, so that the noise level is effectively reduced; in the multi-path power supply output unit, digital voltage and analog voltage are isolated, and the noise coefficient of an analog part is further reduced; and an internal device is designed by selecting a bare chip, and is integrally packaged by plastic packaging, so that the size and the volume of the device are effectively reduced, the miniaturization design of the structure is facilitated, and the application and the carrying are convenient.

Description

technical field [0001] The invention relates to the technical field of infrared imaging, in particular to an infrared bias power supply module based on integrated plastic packaging. Background technique [0002] The infrared thermal imaging system mainly includes an infrared focal plane array and a signal processing system, and the infrared focal plane array is divided into a cooled type and an uncooled type. According to the working principles of the two infrared focal plane arrays, the required bias voltage needs to be provided externally, and in order to achieve higher imaging accuracy, the bias voltage is required to have a lower noise level (below 5μVrms at 1Hz to 10kHz ). In addition, signal processing systems typically include A / D converters, DSPs or FPGAs. Among them, the A / D converter needs 5V analog power supply and 3.3V digital power supply, and DSP or FPGA needs 3.3V and 1.8V digital power supply, and the analog part has higher requirements on power supply nois...

Claims

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Application Information

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IPC IPC(8): H02M1/00H02M3/00H01L25/065
CPCH02M1/00H02M3/00H01L25/065
Inventor 陈道远
Owner NO 24 RES INST OF CETC
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