WHB 10kVAC Isolated Regulated DC-DC Power Supply Module

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 WHB Series delivers a rated isolation withstand voltage of 10,000VAC (approximately 15,000VDC equivalent), tested for up to 60 seconds with leakage current limited to just 1mA. The isolation resistance exceeds 10⁹Ω and the coupling capacitance is held to a remarkably low 60pF — specifications that place this module in a class of its own for applications where personnel safety and equipment protection depend on an absolute galvanic barrier. This level of isolation is achieved through wide creepage-distance PCB layout and proprietary new-generation isolation materials, enabling rail transit high-voltage monitoring equipment, power grid load management terminals, and medical patient-connected devices to meet the most stringent national safety regulations without additional external isolation components or complex multi-stage barrier designs.

2. Beyond the DC isolation rating, the WHB Series incorporates integrated anti-static protection rated at ≥10,000VAC against pulse-group transients — a critical defense mechanism for equipment deployed in electrically harsh environments where electrostatic discharge events and fast transient bursts are frequent. This built-in ESD hardening, combined with the 10KVAC galvanic barrier, forms a comprehensive protection architecture that allows standard instrumentation to be upgraded in a single component swap: devices equipped with WHB modules can directly pass State Grid and medical industry EMC safety compliance certification without additional external TVS diodes, gas discharge tubes, or complex multi-stage protection networks.

3. The WHB Series achieves output voltage accuracy within ±2% of nominal across the entire 0–100% load range — a regulation bandwidth substantially tighter than conventional isolated DC-DC converters. Line regulation is specified at ±0.5% maximum (±1% for 3.3V output), and load regulation from no-load to full-load is ±0.5% typical, ±1% maximum. These are laboratory-grade regulation figures that ensure sensitive downstream circuits — including high-resolution ADCs, precision instrumentation amplifiers, and microcontrollers operating near their voltage margins — receive a stable supply regardless of upstream voltage fluctuations or dynamic load changes. The temperature coefficient is held to ±0.02%/°C, guaranteeing consistent performance across the operating temperature envelope.

4. Each WHB module features built-in self-recovery protection that activates during overload or output short-circuit conditions, automatically restoring the regulated output once the fault is cleared — no external fuses, reset signals, or manual intervention required. The datasheet specifies a critical design consideration: external filter capacitors on the input and output must not exceed 4.7µF, as larger capacitive loads can damage the module. This specified limit, derived from the converter's control-loop design and inrush current management, is essential guidance for design engineers integrating the WHB Series into their systems — exceeding it compromises both protection behavior and long-term reliability.

5. The WHB Series operates reliably across an ambient temperature span of –40°C to +70°C, with storage survivability from –55°C to +105°C, using natural convection cooling exclusively. The SIP12 single-inline package measures 33.0×10.5×15.5mm and weighs 6g to 10g, with a non-conductive flame-retardant black plastic housing meeting UL94 V-0 requirements. The pin configuration places input (Vin+, Vin–) on pins 1–2 and output (Vout–, Vout+) on pins 11–12, with an uncommitted pin 10 available for additional mechanical anchoring to the PCB. Operating humidity is specified at ≤75% non-condensing, and the converter achieves 60%–80% efficiency at a 60KHz typical switching frequency across 1W and 2W power levels.

6. The WHB Series is purpose-designed to meet the safety requirements of DL/T 614-2007, the Chinese national standard for multi-function energy meters governing external RS232/RS485 bus control communication interfaces. With standard input voltages of 3.3V, 5V, 9V, 12V, 15V, and 24VDC and regulated single outputs of 3.3V, 5V, 9V, 12V, or 15VDC at 1W or 2W, the WHB Series offers over two dozen stocked model numbers spanning common rail transit, power utility, and medical instrument bus-interface voltage requirements. Its 10KVAC isolation capability enables immediate safety barrier voltage upgrades on field-deployed equipment, allowing manufacturers to achieve compliance with State Grid and medical device saf

Technical Parameters

Product Uses

Here are seven specific application scenarios of the WHB Series 10KV High Isolation Anti-Static Regulated Module Power Supply:

1.Rail transit high-voltage power supply monitoring: The module is used to provide 10KVAC (approximately 15000VDC) isolated power for RS485/RS232 communication interfaces in rail transit high-voltage power supply monitoring equipment, with ultra-high galvanic isolation protecting monitoring circuits from traction power system transients, enabling the external terminal safety barrier to upgrade to 10KVAC isolation level as required by rail transit safety standards for wayside and onboard monitoring systems.

2.Multi-function smart electricity meters: The module is used to supply isolated power for RS485 communication ports in three-phase multi-function smart electricity meters, fully compliant with national power industry standard DL/T 614-2007, with 10KVAC isolation and ≥10KV anti-static protection ensuring that metering circuits pass national grid safety inspections, while the regulated output (±2% precision) and self-recovery short-circuit protection guarantee reliable long-term data transmission in smart metering deployments.

3.Blood analyzers and medical diagnostic equipment: The module is used to provide 10KVAC isolated power for communication interfaces and signal conditioning circuits in blood analysis instruments and hematology analyzers, with ultra-high galvanic isolation serving as a safety barrier between patient-connected measurement circuits and external network interfaces, enabling medical equipment to directly pass medical industry safety inspections while maintaining stable operation of precision cell counting and sample detection systems.

4.Life monitoring instruments and patient monitoring systems: The module is used to deliver 10KVAC isolated power for communication and data transmission interfaces in life monitoring instruments and patient monitoring equipment, with the extremely high isolation voltage preventing any hazardous leakage current path between patient-connected sensors and hospital network systems, while the regulated output ensures stable operation of vital sign measurement circuits and the self-recovery protection function guarantees continuous monitoring without interruption.

5.Power grid load management terminals: The module is used to provide isolated power for RS485/RS232 bus and Ethernet (RJ45) communication interfaces in power grid electricity load management terminals and consumption management terminals, with 10KVAC isolation and ≥10KV anti-static pulse protection safeguarding communication circuits from high-voltage transients and electrostatic discharge on external power lines, ensuring reliable always-on operation of utility monitoring systems deployed across the distribution network.

Industrial bus and Ethernet communication interfaces: The module is used to supply 10KVAC isolated power for RS232, RS485, and RJ45 Ethernet communication interfaces in industrial automation equipment, with the ultra-high isolation enabling ordinary instruments to upgrade their external terminal isolation and EMC anti-static characteristics to directly pass national grid and medical industry safety inspections, while the SIP12Pin compact package (33.0×10.5×15.5mm) enables integration into space-constrained communication modules.

6.Medical equipment safety certification upgrade: The module is used to enable existing medical and power industry instruments to upgrade their external terminal safety barrier isolation voltage to 10KVAC (15000VDC) by simply replacing the existing lower-isolation DC-DC module with the WHB series, allowing equipment to pass national power grid and medical industry safety compliance testing without redesigning the entire instrument, significantly reducing certification costs and accelerating time-to-market for safety-compliant instrument deployments.