MPS-305QC Adjustable DC Power Supply for Semiconductor & PCB Leakage Current Testing

Precision DC Power for Semiconductor Testing, PCB Leakage Current Detection & Electronics Troubleshooting

The KUAIQU MPS-305QC Adjustable DC Power Supply is a compact DC power solution designed for semiconductor testing, PCB leakage current detection, board-level troubleshooting, and electronic circuit debugging.

When testing semiconductor devices and populated PCBs, abnormal current consumption can be an important indicator of component failure, circuit leakage, short circuits, or power-path abnormalities. The MPS-305QC provides adjustable DC output with real-time voltage and current monitoring, helping engineers and technicians observe current changes and identify abnormal power consumption during testing.

The MPS-305QC integrates an adjustable DC power supply with USB-A/USB-C charging analysis, output control, protection functions, and wireless charging testing, making it suitable for electronics laboratories, PCB repair stations, semiconductor testing, and mobile device troubleshooting.

Key Applications

• PCB Leakage Current Detection
• Semiconductor Device Testing
• PCB Power Consumption Analysis
• Abnormal Current Detection
• Short-Circuit Troubleshooting
• Board-Level Fault Diagnosis
• IC & Component Testing
• Smartphone Motherboard Repair
• USB-A / USB-C Charging Analysis
• QC & PD Fast-Charging Testing

Key Features

1. Real-Time Voltage & Current Monitoring for PCB Testing

The clear 4-digit LED display provides real-time voltage and current readings during circuit testing.

By monitoring current consumption while applying a controlled DC voltage, engineers can identify abnormal changes that may indicate:

• PCB leakage current
• Component failure
• Partial short circuits
• Abnormal standby current
• Power rail problems
• Semiconductor device abnormalities

This makes the MPS-305QC useful for PCB debugging, semiconductor evaluation, and board-level fault diagnosis.

2. Adjustable DC Output for Semiconductor & PCB Testing

The adjustable DC output allows technicians to apply a controlled supply voltage to the target circuit or device.

This is useful when testing:

• Semiconductor components
• IC power rails
• PCB modules
• Electronic control boards
• Smartphone motherboards
• Embedded electronic circuits

Engineers can gradually adjust the supply conditions while observing current consumption to help locate abnormal power behavior.

3. PCB Leakage Current & Abnormal Current Detection

During PCB troubleshooting, an unexpected increase in current can help indicate a potential leakage path, damaged component, or short circuit.

The MPS-305QC enables technicians to:

Set the required DC voltage → power the PCB → monitor current consumption → observe abnormal changes → locate the suspected circuit or component.

This workflow is particularly useful for board-level troubleshooting and repair.

Note: The MPS-305QC is a DC power supply for monitoring current consumption and detecting abnormal current behavior. It is not a dedicated high-precision picoammeter or insulation resistance tester.

4. OVP & OCP Protection System

The built-in Over Voltage Protection (OVP) and Over Current Protection (OCP) help protect the power supply and connected electronic circuits during testing.

When abnormal voltage, excessive current, or a short-circuit condition occurs, the protection system helps reduce the risk of damage to sensitive components.

This is especially valuable when working with:

• Semiconductor devices
• ICs
• PCB assemblies
• Smartphone motherboards
• Sensitive electronic components

5. LOCK Safety Function

The panel lock function helps prevent accidental changes to voltage or current settings during testing.

This is useful for long-duration PCB debugging, repeated measurements, and laboratory testing, where maintaining consistent test parameters is important.

6. Independent OUTPUT Control

The dedicated OUTPUT button allows technicians to turn the DC output ON/OFF without shutting down the entire power supply.

This makes it convenient to:

• Connect or disconnect a PCB
• Change test conditions
• Perform repeated tests
• Compare current consumption
• Troubleshoot suspected faulty circuits

7. USB-A & USB-C Dynamic Monitoring

The built-in USB monitoring function independently displays voltage and current information for the USB-A and USB-C interfaces.

This allows technicians to analyze:

• USB charging current
• Charging voltage
• Abnormal charging behavior
• USB power consumption
• Fast-charging performance

8. QC & PD Fast-Charging Testing

The MPS-305QC provides dedicated USB interfaces for charging analysis:

• USB-A: Supports QC fast-charging testing
• USB-C: Supports PD fast-charging protocol testing

It is suitable for diagnosing charging circuits, USB interfaces, and fast-charging problems in modern electronic devices.

9. Wireless Charging Test Function

The integrated wireless charging test area allows technicians to quickly verify wireless charging performance after repair.

Simply place a compatible smartphone on the designated charging area to perform a basic wireless charging test without additional charging equipment.

Typical PCB Leakage Current Testing Workflow

The MPS-305QC can be integrated into a simple board-level troubleshooting workflow:

1. Connect the PCB
Connect the DC output to the PCB or circuit under test.

2. Set the Required Voltage
Apply the appropriate DC supply voltage according to the circuit or device requirements.

3. Monitor Current Consumption
Observe the real-time current reading on the display.

4. Identify Abnormal Current
Unexpectedly high current consumption may indicate a possible short circuit, leakage path, damaged component, or abnormal power rail.

5. Troubleshoot the Circuit
Use the current behavior as one diagnostic reference to locate the suspected component or circuit section.

This approach is particularly useful for PCB repair technicians, electronics engineers, semiconductor test development, and board-level troubleshooting.

Applications

Semiconductor Testing

Provides controlled DC power and real-time current monitoring for basic semiconductor and electronic device evaluation.

PCB Leakage Current Detection

Helps identify abnormal current consumption and potential leakage paths during PCB troubleshooting.

PCB Fault Diagnosis

Useful for investigating short circuits, abnormal power consumption, damaged components, and faulty power rails.

IC & Component Testing

Provides adjustable DC power for testing ICs, modules, and electronic components under controlled power conditions.

Smartphone Motherboard Repair

Suitable for diagnosing motherboard short circuits, abnormal current consumption, power failures, and charging faults.

Electronics R&D and Laboratory Testing

A practical DC power solution for engineers and technicians performing circuit debugging, prototype testing, and electronic fault analysis.

Package Includes

• DC Power Supply × 1
• Output Cable × 1
• Input Cable × 1
• User Manual × 1
• Warranty Card × 1

Quality Check & Service

The KUAIQU MPS-305QC has passed CE & FCC certification.

All DC power supplies and accessories are inspected before shipment to ensure proper quality and functionality.

For questions about the product or its applications, please contact us. Our customer support team will respond within 24 hours.