UCC12040 - Texas Instruments

UCC12040 DC-DC Converter

UCC12040 is a DC/DC converter with 3-kVRMS basic isolation rating designed to provide efficient, isolated power to isolated circuits that require a bias supply with a well-regulated output voltage. The device integrates a transformer and DC/DC controller with a proprietary architecture to provide 500 mW (typical) of isolated power with high efficiency and lo.

Features

2 Applications
•1 High-efficiency DC-DC converter with integrated transformer technology
• Meets CISPR32 Class B EMI limits without ferrite beads across entire load range on a 2-layer PCB
• Robust isolation barrier:
  – Isolation rating: 3 kVRMS
  – Surge capability: 8 kVPK
  – Working voltage: 850 VRMS
  – CMTI (typical): ±100 V/ns
• Output power (typical): 500-mW
• Regulated 5.0-V or 3.3-V output with selectable 400-mV headroom voltage to power an LDO
• Input voltage: 4.5 V to 5.5 V
• Short circuit recovery
• Thermal shutdown
• 16-pin wide-body SOIC package with > 8-mm creepage and clearance
• Ext.