A digital power module constant temperature control system

Abstract

The invention discloses a constant temperature control system for a digital power module, comprising a host computer, a single-chip microcomputer, a temperature acquisition circuit, a logic control circuit, an H bridge circuit and a semiconductor refrigerator. The temperature acquisition circuit completes the temperature acquisition of the digital power module through a thermistor. The temperature setting of the digital power module is completed through the host computer, and the deviation between the collected temperature of the digital power module and the set value is calculated by the PID to obtain the value of the duty cycle of the PWM signal, and the PWM signal, enable signal, The H-bridge turn-on switching signal passes through the logic control circuit and the signal generated is sent to the HIP2101 to drive the H-bridge to heat up and cool down the semiconductor cooler TEC. During the temperature control process of the temperature control system of the present invention, the temperature can reach the set temperature stably and with high precision, and the constant temperature control box assists the digital power module for heat dissipation and heat preservation, thereby improving the temperature control effect of the constant temperature control system.

Description

technical field [0001] The invention relates to the field of digital power supply, in particular to a constant temperature control system for a digital power supply module. Background technique [0002] Digital power is a power supply product that can realize control, management and monitoring functions with digital signal processor (DSP) or microcontroller (MCU) as the core, digital power driver, PWM controller, etc. as control objects. It changes its external characteristics by setting the internal parameters of the switching power supply, and adds "power management" on the basis of "power control". The so-called power management refers to the efficient distribution of power to the different components of the system, minimizing losses. Management of digital power, such as power sequencing, must be entirely digital. Compared with the traditional analog power supply, the main difference of digital power supply is the control and communication part. In applications that ar...

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Problems solved by technology

[0004] Existing digital power supplies usually use shell heat dissipation fins for heat dissipation, or use built-in heat dissipation fans to assist heat dissipation. The heat dissipation effect is average, and the temperature will still rise slowly when the power supply works for a long time. In extreme environments (such as polar mountains, etc.), functional failures are prone to occur. Therefore, the digital power module should have a certain heat preservation function while having good heat dissipation performance, so that the digital power module can have a wider application scenario.

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