The Ebyte BDM11 series is a high-efficiency 100W DIP-packaged synchronous DC-DC buck-boost power converter module featuring a wide 5-60VDC input voltage range, up to 97.1% conversion efficiency, and an industrial-grade operating temperature rating from -40°C to +85°C for demanding IoT and communication applications.
| Parameter | BDM11-100W12B12U | BDM11-100W24B24U |
|---|---|---|
| Input Voltage | 24 (5~60) VDC | 24 (5~60) VDC |
| Output Voltage | 12 VDC | 24 VDC |
| Output Current | 8400 mA | 4200 mA |
| Maximum Power | 100 W | 100 W |
| Maximum Efficiency | 97.1% | 97.1% |
| Ripple and Noise | Typical 40 to 100 mVpp, suitable for most industrial equipment | Typical 40 to 100 mVpp, suitable for most industrial equipment |
| Adjustable Output | Output voltage can be fine-tuned (±10%) via an external resistor | Output voltage can be fine-tuned (±10%) via an external resistor |
| Operating Temperature | -40 ~ +85℃ | -40 ~ +85℃ |
| Protection Features | Multiple protections against surges, short circuits, overtemperature, overcurrent, and overvoltage | Multiple protections against surges, short circuits, overtemperature, overcurrent, and overvoltage |
| Cooling Method | Passive cooling | Passive cooling |
| Package Type | Molded-case plug-in | Molded-case plug-in |
| Dimensions | 50.8 × 25.4 × 11 mm | 50.8 × 25.4 × 11 mm |
| Device Source | 100% made in China | 100% made in China |
Key Features & Advantages
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Synchronous Buck-Boost Topology: Delivers stable, continuous power output regardless of whether the supply voltage dips below or surges above the regulated output rail.
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Ultra-Wide 5V to 60V Input Range: Effortlessly absorbs wide supply swings from industrial DC buses, battery banks, or solar panels without requiring external pre-regulation.
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Up to 97.1% Conversion Efficiency: Minimizes internal thermal dissipation, allowing higher power density in sealed industrial enclosures without active cooling fans.
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Industrial Temperature Tolerance (-40degC to +85degC): Built with rugged components ensuring reliable full-load operation in harsh outdoor and unconditioned factory environments.
Industrial Installation & Wiring
The BDM11 power module comes in a standard DIP (Dual In-line Package) form factor designed for direct PCB through-hole soldering or industrial socket mounting. Ensure adequate copper thermal pad areas around high-current input and output pins to maximize heat dissipation under sustained 100W load conditions. Keep input/output traces short and wide to minimize parasitic inductance and ripple.
Practical Application Scenarios
1. Power Supply for Industrial RF Communication Gateways
In long-range wireless data links, high-power RF transmitters (such as 30dBm Ebyte Sub-GHz LoRa DTU stations) experience substantial pulsed currents during transmission. The BDM11-100W12B12U provides continuous 12V output with high peak efficiency, stabilizing power rails against voltage sags caused by battery drainage or industrial grid fluctuations.
2. Railway Instrumentation & Transportation Electronic Systems
Onboard railway equipment and intelligent transportation roadside units experience wide DC bus voltage fluctuations during engine startup and load switching. The wide 5-60V input capability of the BDM11 series ensures uninterrupted power delivery to sensitive instrumentation, data logging units, and vehicle tracking devices under extreme electrical noise.
3. Solar-Powered Smart Streetlight Controllers
Outdoor solar-assisted lighting systems rely on lead-acid or lithium battery banks whose output voltages shift dynamically during charge and discharge cycles. The BDM11 module converts varying battery levels into a regulated 12V or 24V supply to drive smart streetlight controller boards, ambient sensors, and wireless mesh nodes seamlessly.
4. Smart Home & Building Automation Actuator Modules
Centralized Smart Home control cabinets often distribution 24V DC power over long cable runs, causing severe IR voltage drops at remote nodes. The BDM11-100W24B24U regulates fluctuating supply lines back to a clean 24V rail, driving motorized relays, intelligent switches, and RS485 HVAC actuators reliably across multi-story installations.
FAQ Section
1. What is the difference between BDM11-100W12B12U and BDM11-100W24B24U?
The primary difference lies in the nominal regulated output voltage and maximum efficiency. The BDM11-100W12B12U provides a steady 12VDC output with up to 96.9% efficiency, making it ideal for standard 12V sensor nodes and RF transceivers. The BDM11-100W24B24U delivers a 24VDC output with up to 97.1% peak efficiency, perfectly tailored for industrial PLC systems, actuators, and 24V bus networks.
2. Can the BDM11 series output a constant voltage when the input drops below the target voltage?
Yes, the BDM11 uses a synchronous buck-boost converter topology. It automatically transitions between buck (step-down) and boost (step-up) operating modes, maintaining a stable 12V or 24V output even when the input voltage drops as low as 5VDC or rises up to 60VDC.
3. How does the module handle thermal management under full 100W continuous load?
Featuring up to 97.1% efficiency, power loss inside the module is reduced to a minimum. However, for continuous operation at ambient temperatures exceeding +60degC under 100W load, proper PCB thermal design with generous copper pours around the DIP pins or forced air cooling is recommended to maintain optimal component longevity.
4. Is the BDM11 suitable for low-noise RF and wireless IoT module supplies?
Yes, its synchronous rectification architecture ensures tight output regulation and high switching frequency stability. When paired with standard input/output LC filtering capacitors, it provides clean DC power required for high-sensitivity sub-1GHz LoRa transceivers and 2.4GHz BLE/Wi-Fi wireless nodes without causing electromagnetic interference (EMI).
