12V24V digitális feszültség- és áramszabályozó modul, XL4016 nagy teljesítményű 8A DC szabályozókártya
12V24V Digital Voltage and Current Regulator Module XL4016 High Power 8A DC Regulator Board
Introduction:
The module adopts XL4016 switch-type voltage regulator chip, cooperates with MBR10200 double rectification, and adds load protection circuit in the circuit to protect the load. The maximum instantaneous output current can reach 8A, and a fan is required to dissipate heat. It is recommended to be within 5A for long-term operation.
Main control chip used:
XL4016 is a switching step-down line DC-DC converter chip with a fixed switching frequency of 180KHz. The chip has excellent linear regulation and load regulation. The output voltage can be adjusted between 1.25V and 36V. The chip integrates reliability modules such as over-voltage protection, over-current protection, over-temperature protection, and short-circuit protection.
MBR Schottky diode is characterized by low forward voltage drop and high forward current. It can not only replace ordinary rectifier diodes for rectification circuits, but also replace fast recovery diodes for switching power supplies. In some cases, rectification is required. It is also suitable for occasions where the link loss voltage is low and the rectification is large.
LM358 operational amplifier
LM358 is a dual operational amplifier. There are two independent, high-gain, internal frequency-compensated operational amplifiers, which are suitable for single power supply with a wide range of power supply voltage, and also suitable for dual power supply mode. Under the recommended working conditions, the power supply current has nothing to do with the power supply voltage.
l Internal frequency compensation
l High DC voltage gain
l High potential gain (about 100dB)
l Low power consumption current, suitable for battery power supply
l Low input bias current, low input offset voltage and offset current
CD4051 electronic switch
CD4051 is a single-channel digital control analog electronic switch, with three binary input terminals A, B, C and INH input, with low on-resistance and very low cut-off leakage current. The digital signal with amplitude of 4.5~20V can control the peak value to 20V analog signal. For example, if VDD= 5V, VSS=0, VEE=-13.5V, the digital signal of 0~5V can control the analog signal of -13.5~4.5V. These switching circuits have extremely low static power consumption in the entire VDD-VSS and VDD-VEE power supply range, regardless of the logic state of the control signal. When INH input terminal = "1", all channels are cut off. Three-bit binary signal selection channel One of the 8 channels can be connected to the input terminal to the output.
XL1509 overview:
XL1509 is a 150KHz fixed frequency pulse width modulation (buck type) DC/DC converter. It has 2A load drive capability and high efficiency, low ripple and excellent linearity, good load regulation ability, and only requires a minimum of external components. Adjustable output is easy to use, built-in frequency compensation and fixed frequency oscillator.
The pulse width modulation control circuit can linearly adjust the duty cycle from 0 to 100% . With enabling function, built-in over-current and short-circuit protection functions, when over-current and short-circuit protection occurs, the operating frequency of the XL1509 is reduced from 150KHz to 50KHz. The built-in frequency compensation module minimizes damage to the external components of the XL1509.
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