产品特点 FEATURES

1 High-efficiency DC-DC converter with typical efficiency of 88% (at rated input DC280V and load)

2 Wide input voltage range: DC200-400V, ideal for distributed power systems

3 Output specifications: Nominal 7.5V (adjustable 4.50-8.25V via external VR or voltage), 33A output current, maximum 247.5W output power

4 Compact low-profile design: Dimensions of 58.4×12.7×61mm (W×H×D), lightweight (max 100g)

5 Built-in protection circuits: Overcurrent (triggers at over105% of rating, auto-recovers), overvoltage, and thermal protection

6 Functionalities: Remote ON/OFF (negative logic: L=ON, H=OFF), remote sensing for precise voltage compensation

7 Safety and compliance: UL60950-1, C-UL, EN62368-1 approvals; CE, UKCA marking; RoHS directive compliant

8 Durable performance: 5-year warranty; operates in -40 to +100°C (on aluminum base plate), 20-95% RH (non-condensing); vibration (5G) and impact (20G) resistant (compliant with IEC61373 Category1 Class B)

9 Conduction cooling via aluminum base plate; optional heat sink available

10 Secure mounting: Equipped with M3 tapped holes (max screwing torque:0.49N·m)

使用场景 APPLICATIONS

1 Distributed power systems in industrial environments

2 Industrial automation controllers and programmable logic controllers (PLCs)

3 Telecom and data center equipment (servers, network switches, power distribution units)

4 Test and measurement instruments requiring stable DC power supply

5 Medical devices compliant with safety standards (e.g., diagnostic equipment)

6 Renewable energy systems (battery storage, solar power converters)

7 Transportation electronics (railway signaling systems, vehicle-mounted devices)

8 Embedded systems and IoT devices needing efficient power conversion

注意事项 PRECAUTIONS

1 Installation tips:

2 Mount using M3 screws with torque ≤0.49N·m (5.0kgf·cm); fix the module to PCB with screws before soldering pins to avoid damaging PCB patterns

3 Avoid placing DC input/output line patterns under the module to reduce noise; use a shield pattern on PCB connected to FG to minimize radiation noise

4 When installing multiple modules side by side, leave sufficient space for ventilation to keep the aluminum base plate temperature within derating limits

5 Operation guidelines:

6 Follow derating curves based on aluminum base plate temperature (Tc); avoid hatched areas in derating charts to prevent excessive ripple/noise

7 Measure Tc at the center of the aluminum base plate; if edge measurement is necessary, add a5°C margin

8 Do not apply excessive stress to input/output pins: max39.2N (4kgf) for +VOUT/-VOUT, ≤19.6N (2kgf) for other pins; do not bend or pull leads forcefully

9 Soldering requirements:

10 Flow soldering: ≤260°C for up to15 seconds; soldering iron (26W): ≤450°C for up to5 seconds

11 Maintenance notes:

12 Read the official instruction manual and "Before using our product" document before operation (refer to Cosel's website for links)

13 Ensure ambient conditions (temperature, humidity, altitude) are within specified ranges

DHS250B07-T-PDF数据手册-参考资料