GRB Wide Input High Voltage DC-DC Boost 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. The GRB series operates from two standard input ranges — 9–18VDC (12V nominal) and 18–36VDC (24V nominal) — each offering a true 2:1 ratio that accommodates battery discharge curves, vehicle electrical variations, and unregulated industrial power rails without external pre-regulation. Line regulation holds at just 0.5% across the full input span, and the 150KHz switching frequency enables compact filtering with minimal external capacitance. Load regulation stays within ±1.0% from no-load to full-load, and dynamic response to a 25%-to-100% load step settles within 150μs. This triple combination of wide input tolerance, tight line regulation, and fast transient response eliminates the need for cascaded regulation stages in space-constrained instrument designs.

2. Standard output voltages span 80V, 100V, 110V, 150V, 200V, 250V, and 500VDC, with power ratings from 1W through 10W — all from a single module. Conversion efficiency reaches 86–88% on 24V-input models driving 250V loads, minimizing thermal rise inside sealed instrument enclosures. Output ripple and noise stays below 150mV peak-to-peak measured across a 20MHz bandwidth, clean enough to directly bias photomultiplier tubes, avalanche photodiodes, Geiger-Muller tubes, and electrostatic deflection plates without additional linear post-regulation. For hematology analyzers, laser particle counters, and mass spectrometers requiring stable high-voltage bias rails, the GRB delivers laboratory-grade regulation in a module measuring just 25.4 × 25.4mm.

3. Every GRB module features metal shell shielding combined with Sunyuan's proprietary vacuum insulation potting process — a dual-barrier approach that blocks electromagnetic interference in both conducted and radiated paths while providing physical protection against moisture, vibration, and mechanical shock. The fully sealed metal package eliminates exposed magnetics and prevents contaminants from degrading high-voltage insulation over time, a critical requirement for medical diagnostic equipment operating in clinical environments with cleaning agents and humidity. Combined with anti-EMC characteristics, the module complies with the electromagnetic compatibility demands of sensitive measurement instrumentation without requiring additional shielding cans or ferrite chokes.

4. Integrated protection includes overtemperature protection (OTP), overcurrent protection (OCP), undervoltage lockout (UVL), and short-circuit protection (SCP) — all built into the module with no external circuitry required. The 500ms startup delay prevents inrush current surges from disturbing upstream supplies, and output voltage soft-start ramps cleanly to the regulation setpoint. If a short circuit or overload condition occurs on the high-voltage output, the module enters hiccup-mode protection, automatically attempting recovery without blowing fuses or requiring manual intervention. For medical and industrial systems where uncontrolled high-voltage faults could damage sensitive downstream electronics or pose safety hazards, this comprehensive protection architecture provides a critical safety layer.

5. The A-type package (25.4 × 25.4 × 10.14mm, 5-pin) delivers up to 5W in a footprint comparable to a postage stamp, with dedicated Vin+, GND input, and Vout+, GND output pins for straightforward two-port connection. The B-type package (50.8 × 25.4 × 10.14mm, 8-pin) extends to 10W and adds a remote on/off control pin (enable with +5V logic), plus an ADJ adjustment pin that accepts a 200kΩ external potentiometer between ADJ and output ground for ±10% fine-tuning of the output voltage. Both packages share the same 10.14mm height profile, making them compatible with 1U chassis and compact instrument card cages where vertical clearance is at a premium.

6.With an operating range of -40°C to +85°C, storage tolerance from -55°C to +125°C, and 10–90% non-condensing humidity rating, the GRB series is deployed in blood analysis hematology instruments, metallurgical exploration equipment, optical control systems, physical and chemical laboratory analytical apparatus, photomultiplier bias supplies, electrostatic applications, and industrial process analyzers. The 50,000-hour MTBF rating, 0.02%/°C temperature coefficient, and free-air convection cooling — no forced airflow required — make the module suitable for sealed, fanless instrument designs where service access is limited. Custom output voltages and power levels are available on request through Sunyuan's engineering support team, ensuring exact matching to application-specific bias requirements.

Technical Parameters

Product Uses

Here are seven specific application scenarios of the GRB Series DC-DC Boost High Voltage Output Module Power Supply for Blood Cell Analysis Medical Instruments:

1.Blood cell analyzers: The module is used to provide stable high DC voltage output (up to 110VDC) from a wide input voltage range to power the photomultiplier tubes (PMTs) and laser detection circuits in hematology analyzers, ensuring precise cell counting and classification with consistent high-voltage supply performance required for accurate blood sample analysis.

2.Medical diagnostic equipment: The module is used to supply isolated high voltage for diagnostic instruments such as flow cytometers and spectrophotometers, where stable DC high voltage is required to drive detectors and sensors, with wide voltage input capability accommodating different power source conditions in clinical laboratory environments.

3.Laboratory analytical instruments: The module is used to deliver regulated high voltage output for laboratory analytical equipment including mass spectrometers, electron microscopes, and chromatography detectors, where the boost conversion technology converts low voltage DC input into the high voltage levels needed for ionization, electron beam acceleration, and signal detection processes.

4.Medical imaging systems: The module is used to provide high voltage power for imaging components in medical devices such as X-ray detectors, image intensifiers, and electro-optical sensors, with the DC-DC boost topology ensuring stable and noise-free high voltage output that is critical for producing clear, accurate diagnostic images without artifacts or signal distortion.

5.Biomedical sensor excitation: The module is used to supply high voltage excitation signals for biomedical sensors including electrophysiology probes, biosensors, and electrochemical detectors, where the wide input voltage range and regulated high voltage output ensure consistent sensor performance across varying battery conditions and power supply fluctuations in portable and stationary medical devices.

6.Medical instrument isolation protection: The module is used to provide galvanic isolation between low-voltage control circuits and high-voltage output stages in medical equipment, protecting sensitive digital processors and patient-connected circuits from high voltage transients, with the compact module design enabling integration into space-constrained medical instrument enclosures while meeting medical safety standards.

7.Portable medical device power solutions: The module is used to enable battery-powered portable medical devices to generate high DC voltage outputs from low-voltage battery sources, with the wide input voltage range accommodating battery discharge curves and the boost conversion technology providing the stable high voltage needed for field-deployable diagnostic and analytical instruments used in point-of-care testing environments.