KUAIQU SPS1203C 120V 3A 360W

Laboratory DC Power Supply with OCP for

DC-DC Converter Testing

The KUAIQU SPS1203C is a 120V 3A 360W laboratory DC power supply designed for DC-DC converter testing, power conversion development, circuit evaluation, and electronics laboratory applications. It provides a 0–120V adjustable DC output, 0–3A adjustable current, and up to 360W of output power, giving engineers a flexible power source for testing compatible DC-DC converter modules and power conversion circuits.

For DC-DC converter testing, the input power supply plays an important role in providing controlled voltage and current conditions. The SPS1203C allows users to adjust the DC input according to the requirements of the converter under test and monitor the actual output parameters during operation.

The wide voltage range is especially useful for testing DC-DC converter circuits that operate at higher input voltages. Compared with lower-voltage bench supplies, the 120V output capability provides additional flexibility for converter development and evaluation.

The SPS1203C is suitable for:

• DC-DC converter testing

• DC converter input testing

• Voltage conversion circuit testing

• Power conversion module evaluation

• Switching circuit testing

• Power electronics development

• Converter prototype testing

• Electronic circuit debugging

• Laboratory power testing

• Battery-powered converter testing

With adjustable DC output, OCP protection, low-ripple performance, real-time electrical parameter display, fine voltage/current adjustment, and 360W output capability, the SPS1203C provides a practical laboratory power solution for DC-DC converter testing and power conversion development.

Key Features

120V 3A Adjustable Output for DC-DC Converter Testing:

The SPS1203C provides a maximum output of 120V, 3A, and 360W, allowing users to establish different DC input conditions for compatible DC-DC converter circuits.

The adjustable output range makes it possible to change the input voltage and current according to the converter's test requirements. This is useful when engineers need to evaluate converter behavior at different DC input levels.

The SPS1203C provides:

• 0–120V adjustable output voltage

• 0–3A adjustable output current

• 360W maximum output power

• 10mV voltage setting resolution below 100V

• 0.1V voltage setting resolution at or above 100V

• 1mA current setting resolution

• 10mV voltage readback resolution below 100V

• 0.1V voltage readback resolution at or above 100V

• 1mA current readback resolution

This makes the SPS1203C suitable as the DC input source for compatible DC-DC converters, voltage conversion modules, switching circuits, and power electronics prototypes.

OCP Protection for Converter Testing:

When testing DC-DC converter circuits, unexpected current increases can occur because of incorrect wiring, abnormal loads, short circuits, or faults in the device under test.

The SPS1203C includes OCP (Over Current Protection) to help provide protection when excessive current conditions occur.

OCP is particularly useful during:

• DC-DC converter testing

• Converter input testing

• Switching circuit testing

• Power conversion testing

• Prototype circuit evaluation

• Electronic circuit debugging

• Power electronics experiments

The protection function provides an additional safeguard when testing circuits under different input conditions.

Stable Low-Ripple DC Output:

The SPS1203C provides regulated DC output with specified ripple performance, making it suitable for supplying controlled input power to DC-DC converter circuits.

The specified voltage ripple is:

• ≤300mVp-p

• ≤30mVrms

The specified current ripple is:

• ≤30mArms

This regulated output can help provide consistent DC input conditions when evaluating converter operation, power consumption, and circuit response.

Monitor Voltage, Current and Power During Testing:

The SPS1203C uses a digital display to show important electrical parameters during operation.

Users can monitor:

• Voltage

• Current

• Power

• Ah

• Charging status

• Output status

For DC-DC converter testing, monitoring voltage and current at the power supply output allows engineers to observe how the converter responds when its DC input conditions change.

The power and Ah readings also provide additional information when the power supply is used in its battery charging function.

Fine Voltage and Current Control:

The SPS1203C uses an encoder control system for adjusting voltage and current.

The fine setting resolution allows users to establish specific input conditions for different converter tests:

• 10mV voltage resolution below 100V

• 0.1V voltage resolution at or above 100V

• 1mA current resolution

This is useful when engineers need to gradually adjust the DC input during converter development or compare circuit behavior at different input settings.

DC-DC Converter Testing Protection

OCP — Over Current Protection

The SPS1203C provides Over Current Protection (OCP) to help protect the power supply and connected circuit when excessive current is detected.

During DC-DC converter testing, an input-side overcurrent condition may occur because of wiring errors, short circuits, abnormal loads, or a faulty converter module.

OCP provides additional protection during these situations and is useful for:

• DC-DC converter testing

• Converter module testing

• Switching circuit testing

• Power conversion testing

• Prototype testing

• Circuit debugging

• Electronic load testing

Reverse Polarity Protection

The SPS1203C includes reverse polarity protection for its battery charging function.

When used for battery charging, incorrect battery polarity can create an abnormal connection condition. The charging function provides protection against damage caused by reverse polarity.

This can be useful when testing DC-DC converter systems that include rechargeable batteries or battery charging circuits.

Typical applications include:

• Battery charging

• Battery-powered converter testing

• Battery charging circuit evaluation

• Rechargeable battery system testing

• Electronic module testing

Overcharge Protection

The SPS1203C provides overcharge protection as part of its battery charging function.

When the connected battery reaches full charge, the power supply can automatically turn off the output to help prevent continued charging.

This function is useful when a DC-DC converter or power conversion system is connected to a rechargeable battery.

Over-Temperature Protection

The SPS1203C provides over-temperature protection during operation.

When the power supply is used for longer testing sessions or under higher output conditions, this protection function provides an additional safeguard for the equipment.

It can be useful during:

• Long-duration DC-DC converter testing

• Power conversion testing

• Laboratory experiments

• Electronics development

• Prototype evaluation

Short-Circuit Alarm

The SPS1203C provides a short-circuit alarm to notify the user when a short-circuit condition is detected.

During converter testing, unexpected short circuits can result from incorrect wiring, damaged components, or abnormal circuit conditions. The alarm helps users identify an abnormal output condition.

It can assist during:

• Converter input checks

• DC-DC circuit testing

• Prototype debugging

• Circuit connection verification

• Power electronics troubleshooting

Output Switch

The independent OUTPUT control allows users to prepare the required voltage and current settings before supplying power to the DC-DC converter under test.

This provides a convenient way to configure the desired test conditions first and then activate the output when the circuit is ready.

The output control is useful for:

• DC-DC converter testing

• Converter input testing

• Power conversion testing

• Switching circuit evaluation

• Prototype testing

• Circuit debugging

✦ Real-Time Electrical Parameter Display

The SPS1203C provides a digital display for monitoring the power supply output during converter testing.

The display can show:

• Output voltage

• Output current

• Power

• Ah

• Charging status

• Output status

When the DC-DC converter changes its input demand, engineers can observe corresponding changes in the power supply's voltage, current, and power readings.

This makes the display useful for monitoring the operating condition of the power source throughout a test.

✦ 4-Digit Digital Display

The SPS1203C uses a 4-digit digital display for clear parameter readout.

It provides information such as:

• Output voltage

• Output current

• Power

• Ah charging amount

The display makes it easier to check the power supply settings and actual electrical readings during DC-DC converter testing and power electronics development.

✦ Encoder-Based Parameter Adjustment

The SPS1203C uses encoder controls to adjust voltage and current.

The available setting resolution includes:

• 10mV below 100V

• 0.1V at or above 100V

• 1mA current resolution

This allows users to make controlled changes to the input conditions while evaluating DC-DC converter performance.

For example, engineers can adjust the input voltage step by step and observe changes in the converter's operating current or power demand.

✦ USB-A & USB-C Charging Ports

The SPS1203C also provides USB-A and USB-C charging outputs for compatible USB devices.

USB-A supports:

• PE1.1/2.0

• Apple

• BC1.2

• AFC

• FCP

• QC2.0/QC3.0

USB-C supports:

• PE1.1/2.0

• Apple

• BC1.2

• AFC

• FCP

• QC2.0/QC3.0

• PD3.0

• PPS

These ports provide additional charging capability at electronics development benches and laboratory workstations.

✦ 360W Output Capacity for Laboratory Testing

The SPS1203C combines a 0–120V adjustable voltage range, 0–3A current range, and 360W maximum output power in one laboratory DC power supply.

The output capacity is suitable for compatible:

• DC-DC converter modules

• Power conversion circuits

• Switching circuits

• Electronic modules

• Prototype boards

• Electrical loads

The SPS1203C is designed for engineering laboratories, R&D workstations, electronics development benches, educational laboratories, and power electronics testing environments.

The SPS1203C combines:

• Adjustable 0–120V output

• Adjustable 0–3A output

• 360W maximum power

• OCP protection

• Regulated DC output

• Low-ripple output

• Real-time voltage display

• Real-time current display

• Power display

• Ah display

• High-precision 4-digit display

• Reverse polarity protection

• Overcharge protection

• Over-temperature protection

• Short-circuit alarm

• Battery charging function

• USB-A fast charging

• USB-C fast charging

• Encoder adjustment

• Output ON/OFF control

It is particularly suitable for:

• DC-DC converter circuits

• DC-DC converter modules

• Voltage conversion circuits

• Power conversion boards

• Switching circuits

• Power electronics prototypes

• Battery-powered converter systems

• Compatible electronic loads

✦ Wide Range of Applications

The SPS1203C is designed for laboratory and engineering applications that require adjustable DC input power for DC-DC converter testing and power conversion evaluation.

DC-DC Converter Testing

• DC-DC converter functional testing

• Converter input voltage testing

• Converter input current observation

• Converter operating condition evaluation

• Converter power consumption monitoring

• DC input adjustment

• Converter prototype testing

• Converter circuit debugging

Power Conversion Circuit Testing

• Voltage conversion circuit testing

• Power conversion module evaluation

• Switching circuit testing

• DC input power testing

• Power electronics development

• Conversion circuit troubleshooting

• Prototype power testing

• Electronic module evaluation

Laboratory Power Electronics Testing

• Power electronics experiments

• Engineering laboratory testing

• Electronic circuit development

• Prototype evaluation

• Circuit debugging

• DC power testing

• Electronic module testing

• R&D bench testing

Battery-Related Converter Applications

• Battery-powered converter testing

• Rechargeable battery charging

• Battery charging circuit testing

• Charging condition monitoring

• Ah charging amount monitoring

• Battery-powered electronic system testing

• Power conversion system testing

• Battery charging applications

The SPS1203C provides 0–120V adjustable DC output, up to 3A current, 360W power capacity, OCP protection, regulated low-ripple output, real-time electrical parameter monitoring, and precise voltage/current adjustment for DC-DC converter testing, power conversion evaluation, switching circuit testing, prototype development, and laboratory applications.

✦ Quality Assurance & Customer Support

Each package includes:

1 × DC power supply

1 × output power cable

1 × input power cable

1 × user manual

1 × warranty card

All DC power supplies and accessories are inspected before shipment to help ensure reliable quality. The SPS1203C has passed CE & FCC certification.

For questions about the KUAIQU SPS1203C 120V 3A 360W laboratory DC power supply for DC-DC converter testing, customers can contact us for technical support and product assistance.

Technical Specifications

Why Choose KUAIQU SPS1203C?

For DC-DC converter testing, engineers need a laboratory DC power supply that can provide adjustable input conditions while allowing them to monitor the electrical parameters of the power source during testing.

The KUAIQU SPS1203C offers a combination of wide-range DC output, 360W power capacity, protection functions, and precise parameter adjustment in one bench power supply.

Key advantages include:

✓ 0–120V / 0–3A adjustable DC output

✓ 360W maximum output power

✓ Laboratory DC power supply design

✓ OCP — Over Current Protection

✓ Regulated low-ripple DC output

✓ ≤300mVp-p / ≤30mVrms voltage ripple

✓ ≤30mArms current ripple

✓ 10mV voltage setting/readback resolution below 100V

✓ 0.1V voltage setting/readback resolution at or above 100V

✓ 1mA current setting/readback resolution

✓ Real-time voltage, current and power display

✓ Real-time Ah accumulated charge display

✓ 4-digit digital display

✓ Reverse polarity protection for battery charging

✓ Overcharge protection

✓ Over-temperature protection

✓ Short-circuit alarm

✓ Automatic output shutdown after full battery charge

✓ Dedicated battery charging function

✓ USB-A fast charging

✓ USB-C fast charging

✓ Precision encoder adjustment

✓ Independent OUTPUT control

Providing a practical laboratory DC power supply solution for DC-DC converter testing, converter input testing, voltage conversion circuit evaluation, power conversion module testing, switching circuit testing, power electronics development, prototype testing, and electronics laboratory applications.