Wiseman BP Series High-Voltage DC-DC Converter Module (0.5 kV, 2.5 W)

Overview

The Wiseman BP Series is a compact, isolated high-voltage DC-DC converter module engineered for precision biasing applications in scientific instrumentation and industrial systems. Based on zero-current resonant topology and proprietary high-voltage insulation design, the BP module delivers tightly regulated output voltages from 100 V to 500 V DC—selectable per unit—with a maximum output power of 2.5 W. Its input-to-output galvanic isolation (500 V DC) enables safe floating operation relative to system ground or other power rails, making it suitable for dual-polarity configurations and cascaded HV subsystems. Unlike transformer-based or Cockcroft-Walton multipliers, the BP employs feedback-controlled switching regulation to maintain voltage stability across wide load variations (20–100% full load), with minimal dependence on input voltage fluctuations. This architecture ensures consistent performance in demanding environments such as mass spectrometer detector biasing, photomultiplier tube (PMT) anode supply, and electrostatic lens control—where low ripple, thermal drift, and electromagnetic compatibility are critical.

Key Features

• Fully isolated DC-DC conversion with 500 V DC input/output isolation rating—enabling safe floating operation and dual-polarity configuration
• Simultaneous positive/negative polarity output capability; polarity reversal achieved via external control signal without hardware modification
• Ultra-compact form factor: 60 mm × 40 mm × 17 mm (2.36″ × 1.57″ × 0.67″), ideal for space-constrained OEM instrument designs
• Low output ripple (≤0.5% p-p) and tight temperature coefficient (25 ppm/°C), supporting high-sensitivity detection systems
• Integrated short-circuit and arc-discharge protection—ensuring robustness during transient fault conditions common in vacuum or high-impedance loads
• Wide input range (+2 V to +24 V DC) compatible with standard laboratory DC supplies and embedded controller rails
• High reliability design validated for continuous operation at ambient temperatures up to +50 °C, with MTBF exceeding 100,000 hours under nominal loading

Sample Compatibility & Compliance

The BP module is routinely integrated into analytical platforms requiring stable, low-noise high-voltage bias—including time-of-flight and quadrupole mass spectrometers (MS), PMT-based scintillation detectors, APD arrays, and electrostatic beam optics. Its isolation rating and low leakage current (<1 µA typical) meet functional safety requirements for Class I equipment per IEC 61010-1. While not certified to UL/CSA standards as a standalone end-product, the BP complies with EMC emission limits per CISPR 32 Class B when installed with recommended filtering and grounding practices. For GLP/GMP-regulated environments (e.g., pharmaceutical QC labs), the module supports traceable calibration protocols when paired with external reference meters and documented test procedures aligned with ISO/IEC 17025.

Software & Data Management

As a hardware-level DC-DC converter, the BP operates autonomously without embedded firmware or digital communication interfaces. It is designed for analog control and monitoring: output voltage is scaled linearly with input voltage (1:100 ratio typical), enabling precise remote adjustment via programmable DC sources or DAC outputs from host controllers (e.g., LabVIEW FPGA, Python-controlled DAQ systems). For audit-trail compliance in regulated workflows, users implement external logging of input voltage, ambient temperature, and measured output using calibrated multimeters or dedicated HV probes—data which may be archived alongside instrument metadata per FDA 21 CFR Part 11 requirements when hosted on validated acquisition software.

Applications

• Photomultiplier tube (PMT) dynode chain biasing in radiation detection and fluorescence spectroscopy
• Anode and grid biasing in quadrupole and ion trap mass spectrometers
• Electrostatic focusing lenses for electron/ion beam systems
• High-voltage bias for avalanche photodiodes (APDs), silicon photomultipliers (SiPMs), and gas-filled detectors (e.g., proportional counters, G-M tubes)
• Electrophoresis power supplies and electrostatic printing subsystems
• OEM integration into portable X-ray sources, laser drivers, and plasma ignition modules

FAQ

Can the BP module be operated in a floating configuration relative to earth ground?
Yes—the 500 V DC input/output isolation allows the entire module to float at any potential within system insulation limits, provided creepage and clearance distances are maintained per IEC 61010-1.
Is polarity reversal achieved electronically or mechanically?
Polarity reversal is implemented via external wiring reconfiguration; no internal switching is required. The module supports both polarities natively depending on output terminal assignment.
What is the maximum continuous output current at 500 V?
At rated 2.5 W output, maximum continuous current is 5 mA (500 V × 5 mA = 2.5 W), decreasing linearly at lower output voltages.
Does the BP require heatsinking under full-load operation?
No—its thermally optimized PCB layout and >85% typical efficiency enable convection cooling only, even at +50 °C ambient.
Are custom voltage options available beyond the standard 100–500 V range?
Yes—Wiseman offers engineering support for modified output specifications, including tighter regulation, enhanced EMI filtering, or extended temperature grades, subject to minimum order quantities.