UCC12040/50 3 kVRMS and 5 kVRMS Isolated DC/DC Converters

22 April, 2020

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Texas Instruments’ 500 mW, high-efficiency low-EMI converters are suitable for ultra-high voltage applications.

Texas Instruments’ UCC12040 and UCC12050 DC/DC converters with 3 kV_RMS and 5 kV_RMS reinforced isolation ratings, respectively, are designed to provide efficient, isolated power to isolated circuits that require a bias supply with well-regulated output voltages. These devices integrate a transformer and DC/DC controller with proprietary architecture to provide 500 mW (typical) of isolated power with high efficiency and low EMI.

The UCC12040/50 converters integrate protection features for increase system robustness. The devices feature an enable pin, synchronization capability and regulated 5 V or 3.3 V output options with the headroom. These low-profile, miniaturized converter solutions are available in a wide-body SOIC package with 2.65 mm height (typical).

Features:

High-efficiency with integrated transformer technology
Meets CISPR32 Class B EMI limits without ferrite beads across the load range on a 2-layer PCB
Output power: 500 mW (typ.)
Input voltage: 4.5 V to 5.5 V
Package: 16-pin wide-body SOIC with >8 mm creepage and clearance
Regulated 5.0 V to 3.3 V output with selectable 400 mV headroom voltage to power an LDO
Short circuit recovery
Thermal shutdown
Extended temperature range: -40°C to +125°C
Planned safety-related certification:
- CSA certification per IEC 60950-1, IEC 62368-1, and IEC 60601-1 end-equipment standards
- CQC approval per GB4943.1-2011
- 3,000 V_RMS (UCC12040) and 5,000 V_RMS (UCC12050) isolation for 1 minute per UL 1577
Robust isolation barrier:
- CMTI: ±100 V/ns (typ.)
- Isolation rating: 3 kV_RMS (UCC12040) and 5 kV_RMS (UCC12050)
- Surge capability: 8 kV_PK (UCC12040) and 10 kV_PK (UCC12050)
- Working voltage: 800 V_RMS (UCC12040) and 1.2 kV_RMS (UCC12050)

more information: www.ti.com

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