PQ55540HTx05

DC-DC Converter

38-55V

54V

275W

2250Vdc

Half-brick

Input

Output

Power

Isolation

DC-DC Converter

Product Details

The PQ55540HTL05 PowerQor® Tera half-brick converter is a next-generation, board mountable, isolated, fixed switching frequemcy DC/DC converter that uses synchronous rectification to achieve extremely high conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height and application effort. The Tera series converters offer the maximum useable output power for a standard "half-brick" modules. The 54V Tera units are designed to be used primarily in Power over Ethernet (PoE) applications. RoHS compliant (see page 12).

Operational Features

• Ultra-high efficiency, 93% at full rated load current
• Delivers up to 275 Watts of output power with minimal derating - no heatsink required
• Input voltage range: 38V – 55V suitable for 48V bus applications
• Fixed frequency switching provides predictable EMI performance

Mechanical Features

• Industry standard half-brick pin-out configuration

Control Features

• On/Off control referenced to input side (positive and negative logic options are available)

Safety Features

• 2250V, 30 MW input-to-output isolation
• UL/cUL 60950-1 recognized (US & Canada), basic insulation rating
• TUV certified to EN60950-1
• Meets 72/23/EEC and 93/68/EEC directives
• Meets UL94V-0 flammability requirements

Protection Features

• Input under-voltage lockout disables converter at low input voltage conditions
• Output current limit and short circuit shutdown protects converter and load from permanent damage
• Active back bias limit prevents damage to converter from external load induced pre-bias
• Output over-voltage protection
• Thermal shutdown