GRF-5W 6kVDC Isolated Regulated High Voltage DC-DC Converter

Device features:

1. Protect the control loop of the upper stage of the host computer.

2. Reduce the impact of environmental noise on the test circuit, and can overcome inverter noise and various high and low frequency pulsation interference.

3. It suppresses the interference of circulating currents in public ground wires and pulses of frequency converters, solenoid valves, thyristors, etc. to equipment. It also has the function of limiting voltage and current for lower-level equipment. It is a faithful protection for transmitters, instruments, frequency converters, solenoid valves, PLC/DCS input and output, and communication interfaces.

The DIN35 series standard 35mm guide rail card holder structure is easy to install and can effectively isolate: the potential difference between signal input, signal output, power supply and earth.

Product Advantage

1. High Isolation Between Input and Output

The GRF series provides a specified input-to-output isolation withstand voltage of 6,000 VDC, tested for 60 seconds at the stated 1 mA leakage condition. Insulation resistance exceeds 1,000 MΩ when measured at 500 VDC.

The isolation barrier separates the supply and output ground domains, helping reduce ground-loop interference and common-mode coupling. It supports applications requiring electrical separation between low-voltage control circuits and high-voltage output circuitry. Suitability for medical or other safety-regulated equipment requires evaluation against the applicable system requirements.

2. Input Options for Different DC Supply Rails

Three input families accommodate nominal 5 V, 12 V and 24 V supplies, with respective operating ranges of 4.5–9 V, 9–18 V and 18–28 V. Designers can select the version that matches the available power rail.

Specified line regulation is ±1%, while load regulation is ±1% over 10–100% load. No-load power consumption is stated as 300 mW. These characteristics support high-voltage generation in instruments where supply variation and standby power demand are design considerations.

3. High-Voltage Outputs with Recoverable Short-Circuit Protection

Depending on the selected model, the GRF series offers output voltages from 50 to 500 VDC and power ratings from 1 to 5 W. Continuous, self-recovering short-circuit protection allows the output to recover after the fault is removed, subject to the specified operating conditions.

Published characteristics include ±2% output accuracy, a temperature coefficient of 0.02%/°C and switching frequencies between 200 and 400 kHz. Output ripple, filtering and load requirements should be considered when integrating the module into noise-sensitive detector or measurement circuits.

4. Compact SIP Package for PCB Integration

The module uses a SIP package measuring 33.0 × 10.5 × 15.5 mm and weighing approximately 10 g. The housing material carries a stated UL94 V-0 flammability rating.

Input and output connections occupy opposite ends of the pin arrangement, with unused positions between them. PCB layout must still provide the clearance and creepage required by the application. The specified soldering limit is 300°C for 10 seconds, with the solder joint at least 1 mm from the package body. Natural-convection cooling supports integration where the load and ambient conditions permit.

5. A Modular Source for High-Voltage Bias Circuits

The GRF series can serve as a high-voltage source for compatible detector bias circuits, analytical instruments, radiation measurement equipment and selected capacitor-charging applications. Model selection depends on the required voltage, available output current, ripple tolerance and load behavior.

Integrating the conversion circuitry into a module can reduce the work involved in developing a discrete high-voltage supply. Each application should be checked against the selected model’s ratings, particularly where startup current, charging energy or output stability affects performance.

6. Environmental Ratings for Equipment Design

The stated operating temperature range is −40°C to +85°C, with storage limits of −55°C to +105°C and humidity up to 95% under non-condensing conditions. These ratings provide a basis for enclosure and thermal design; outdoor installations also require suitable protection against moisture, contamination and condensation.

The published MTBF is 1,000,000 hours, calculated using MIL-HDBK-217F at 25°C. This figure is a statistical reliability estimate under defined assumptions, rather than a guaranteed service life for an individual module.

Technical Parameters

Product Uses

Here are seven specific application scenarios of the GRF-5W Series Medical Instrument 6KV Isolation DC High Voltage Output Power Module:

1.Medical analyzers: The module is used to provide 6KV-isolated regulated high DC voltage output for blood cell analyzers, urine analyzers, and biochemical analyzers, powering photomultiplier tubes and laser detection circuits with 5W output power ensuring stable and sufficient energy supply for precise sample detection and cell counting in clinical laboratory diagnostic equipment.

2.Medical imaging equipment: The module is used to supply isolated high voltage for medical imaging components such as X-ray detector tubes, image intensifiers, and CCD sensors, with 6KV galvanic isolation ensuring complete electrical separation between high-voltage output stages and low-voltage digital processing circuits, preventing noise interference and protecting patients and operators from electrical hazards during diagnostic imaging procedures.

3.Dental and cosmetic laser devices: The module is used to deliver stable high DC voltage for driving laser tubes in dental laser treatment devices and cosmetic laser systems, with the wide voltage input accommodating varying power supply conditions and the regulated output ensuring consistent laser beam intensity required for precise soft tissue cutting, teeth whitening, and dermatological treatment procedures.

4.Patient monitoring systems: The module is used to provide isolated power for high-voltage components in patient monitoring equipment including ECG machines, EEG systems, and electrosurgical units, with 6KV isolation serving as a critical safety barrier between patient-connected circuits and internal power systems, preventing dangerous leakage currents while maintaining stable operation of monitoring and treatment functions.

5.Laboratory diagnostic instruments: The module is used to supply regulated high voltage for laboratory analytical equipment such as spectrophotometers, flow cytometers, and electrophoresis systems, where the 5W output power and wide input voltage range ensure reliable operation under varying laboratory power conditions, and the boost conversion technology provides the precise high voltage levels needed for optical detection and sample analysis.

6.Medical ultrasound equipment: The module is used to generate isolated high voltage for driving piezoelectric transducers in medical ultrasound diagnostic systems, with the regulated DC-DC boost output ensuring stable transducer excitation voltage for producing high-quality ultrasound images, while 6KV isolation protects sensitive signal processing circuits from high-voltage transients generated during ultrasound wave transmission and reception.

7.Portable medical devices: The module is used to enable battery-powered portable medical instruments to generate stable high DC voltage from low-voltage battery sources, with the wide input voltage range accommodating battery discharge curves and the compact module design with 5W output power suitable for integration into handheld diagnostic devices, portable analyzers, and point-of-care testing equipment used in field and clinical settings.