Power Regulator Circuit for Controller Boards

Product Specifications

Technical details and manufacturing context for Power Regulator Circuit

Definition

The Power Regulator Circuit is a specialized electronic component integrated into a controller board. Its primary function is to monitor, adjust, and maintain stable voltage levels, ensuring reliable operation of connected components and preventing damage from power fluctuations. The circuit is designed for use in computer, electronic, and optical product manufacturing, particularly in applications requiring robust power management. It accepts a wide input voltage range of 9–36 V DC, making it suitable for automotive and industrial environments. The output is fixed at 5.0 V DC with a tolerance of ±2%, providing a stable supply for logic circuits. The circuit can deliver a continuous output current of 0–3 A, with derating required above 70°C. It maintains line regulation within ±0.2% over the full input range and load regulation within ±0.5% from 10% to 100% load. Ripple and noise are limited to ≤50 mV peak-to-peak at 20 MHz bandwidth. Efficiency typically ranges from 85% to 92% at full load. The operating temperature range is -40°C to 85°C ambient, with storage from -55°C to 125°C. It operates in non-condensing relative humidity of 5% to 95%. The ingress protection rating depends on the enclosure, typically IP54 to IP65 per IEC 60529. The PCB material is FR-4, rated UL 94V-0, per IPC-4101. Board dimensions are 50×40×12 mm, and weight is ≤50 g including components. The circuit uses semiconductor components, copper traces, and a PCB substrate. It employs voltage regulators, capacitors, resistors, and feedback mechanisms to compare output voltage against a reference, adjusting current flow to maintain consistent voltage despite input variations or load changes. This product is listed as a reference; verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The circuit operates by comparing the output voltage to a stable reference. A feedback loop continuously monitors the output and adjusts the current flow through a pass element (such as a transistor) to correct any deviation. Capacitors filter noise and stabilize transient responses, while resistors set the reference and feedback network. This closed-loop control ensures that the output voltage remains within specified tolerances even when the input voltage fluctuates or the load changes. The wide input range and high efficiency are achieved through a switching regulator topology, which uses an inductor and a switch to transfer energy efficiently. The circuit also includes protection features such as overcurrent and thermal shutdown, which are inherent in the design.

Common Materials

Semiconductor components, Copper traces, PCB substrate

Technical Parameters

Parameter	Typical range	Notes & selection driver
Input Voltage Range	9–36 V DC	Wide input for automotive and industrial
Output Voltage	5.0 ±2% V DC	Fixed output for logic circuits
Output Current	0–3 A	Continuous, derate above 70°C
Line Regulation	±0.2 %	Over full input range
Load Regulation	±0.5 %	From 10% to 100% load
Ripple and Noise	≤50 mV p-p	20 MHz bandwidth
Efficiency	85–92 %	At full load, typical
Operating Temperature	-40–85 °C	Ambient, no derating
Storage Temperature	-55–125 °C	Non-operating
Relative Humidity	5–95 % RH	Non-condensing
Ingress Protection	IP54–IP65	Depends on enclosureIEC 60529
PCB Material	FR-4	UL 94V-0 ratedIPC-4101
Dimensions	50×40×12 mm	L×W×H, board only
Weight	≤50 g	Including components

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Voltage Regulator IC
Primary voltage regulation and control

Material: Semiconductor
Filter Capacitors Part
Smooth voltage ripple and noise

Material: Electrolytic/Ceramic
Current Sense Resistor Part
Monitor and limit current flow

Material: Metal film/Alloy
Inductor
Stores and releases energy each switching cycle; it is what makes the switching topology efficient.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Controller Board

View system integration details

Manufacturers of Power Regulator Circuit

Manufacturer profiles associated with Power Regulator Circuit.

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Frequently Asked Questions

What is the input voltage range of this power regulator circuit?

The input voltage range is 9–36 V DC, suitable for automotive and industrial applications. Always verify the actual range with the manufacturer for your specific model.

What is the output voltage and current capability?

The output voltage is fixed at 5.0 V DC with a tolerance of ±2%. The output current is 0–3 A continuous, with derating required above 70°C. Confirm these values with the supplier.

What are the operating temperature limits?

The operating temperature range is -40°C to 85°C ambient, with storage from -55°C to 125°C. Ensure adequate cooling if operating near the upper limit.

What standards apply to this circuit?

The ingress protection rating is per IEC 60529 (typically IP54–IP65 depending on enclosure), and the PCB material is FR-4 per IPC-4101 with UL 94V-0 rating. These are reference standards; verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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efficiency:	Up to 95%
temperature:	-40°C to +85°C
current rating:	Up to 3A continuous
operating frequency:	100kHz to 2.5MHz
voltage input range:	4.5V to 36V
voltage output range:	0.8V to 24V

Power Regulator Circuit

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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