MC34717EP

Series:	--
Packaging:	Tray
Part Status:	Active
Applications:	Converter, DDR
Voltage - Input:	3 V ~ 6 V
Number of Outputs:	2
Voltage - Output:	0.7 V ~ 3.6 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	26-VFQFN Exposed Pad
Supplier Device Package:	26-QFN-EP (5x5)
Base Part Number:	MC34717

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MC34717EP Application Field and Working Principle

Introduction

The MC34717EP (Proportional-Integral-Derivative or PID) Voltage Regulator is a special purpose power management integrated circuit (PMIC) designed for voltage regulation. It is a step up/step down voltage regulator, designed to regulate voltage outputs to a specific level. Its field of application encompasses smart home devices, automotive industry and LED applications, among others. In this article, we take a look at the applications and working principle of the MC34717EP.

Applications

The MC34717EP is used as part of a voltage regulation circuit to produce and maintain precise voltage outputs. It is highly suitable for applications where precise voltage regulation is required and where small amounts of current are required, including:

• Smart home/lighting devices and appliances.
• LED lighting applications.
• Automotive electrical systems.
• Medical instruments.
• Data acquisition systems.

Working Principle

The MC34717EP is a Proportional-Integral-Derivative (PID) voltage regulator, which uses feedback loops to regulate the output voltage. The feedback loop is a circuit of elements that measures the output voltage and adjusts the input voltage as needed to maintain the output voltage at a desired level. The PID voltage regulator uses three main components: the Proportional Counter (P), the Integral Counter (I) and the Derivative Counter (D). The P, I and D components interact to form the PID feedback loop. These components adjust the output voltage by changing the duty cycle of the output voltage. The Proportional Counter (P) monitors the output voltage and compares it to the desired voltage. If the output voltage is greater than the desired value, it makes the output decrease, and if the output is less, it makes the output increase. The Integral Counter (I) monitors the output voltage and takes into account the difference between the current output and the desired output. It uses this difference to calculate the necessary change in the current output voltage to match the desired value. The Derivative Counter (D) is responsible for monitoring the rate of change of the output voltage. It is used to determine the necessary speed of voltage change in relation to the desired output level. It is the element that makes the output voltage changes happen faster and with greater accuracy. The MC34717EP is able to provide precise voltage regulation through its PID feedback loop. It is also highly efficient, with a power efficiency rating of 96%.

Conclusion

The MC34717EP is a Proportional-Integral-Derivative (PID) Voltage Regulator, designed for applications that require precise voltage regulation and low current requirements. It is highly efficient and suitable for a wide range of applications, including smart home/lighting devices, LED lighting, automotive electrical systems, medical instruments and data acquisition systems. Its working principle involves a PID feedback loop that adjusts the output voltage based on the difference between the current and desired values, the rate of change of the output voltage and the duty cycle of the output voltage.

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