EMI-optimised transformer miniaturises isolated power
Texas Instruments (TI) has introduced the first integrated circuit (IC) developed with a new proprietary integrated transformer technology that miniaturises isolated power. A 500mW high-efficiency isolated DC/DC converter with low electromagnetic interference (EMI), the UCC12050.
Its 2.65mm height enables designers to reduce their solution volume by as much as 80% compared to discrete solutions and 60% compared to power modules, with twice the efficiency of competing devices. Built for industrial performance, the UCC12050’s 5kVrms reinforced isolation and 1.2kVrms working voltage protect against high-voltage spikes in systems such as industrial transport, grid infrastructure and medical equipment.
TI’s breakthrough integrated transformer technology enables high-density isolated DC/DC power conversion, while maintaining low EMI. The single-package, surface-mount architecture gives designers an easy-to-use, low-profile IC that reduces the bill of materials (BOM), and efficiently operates across a wide temperature range.
An EMI-optimised, low capacitance transformer and quiet control scheme streamline EMI compliance while providing a reliable solution with options for reinforced or basic isolation. Download the white paper, ‘Power Through the Isolation Barrier: The Landscape of Isolated DC/DC Power Supplies’ to learn more about this new family of reinforced isolated DC/DC bias supplies.
TI will demonstrate the UCC12050 in booth No. 1001 at the Applied Power Electronics Conference (APEC) in New Orleans, Louisiana, March 15th to 19th, 2020.
Key features and benefits of the UCC12050
- Small size, increased power density: Available in a 16-pin small-outline integrated circuit (SOIC) package measuring 10.3x10.3x2.65mm, the UCC12050 offers 60% efficiency – twice that of competing devices of similar size – and twice the power density of comparative isolated power modules. Delivering 0.5 W in the new architecture improves reliability, enables a small BOM and simplifies board layout.
- Ultra-low EMI: The UCC12050’s integrated transformer with very low primary-to-secondary capacitance is optimised for EMI performance, and its quiet control scheme makes it easier for engineers to have their designs pass Comité International Spécial des Perturbations Radioélectriques (CISPR) 32 Class B EMI tests, with margin, on a two-layer printed circuit board. The solution also eliminates external filter components such as low-dropout regulators and ferrite beads normally required to meet EMI certification, which significantly reduces component selection and design time.
- Reinforced isolation, wide temperature range: The UCC12050’s reinforced isolation with 8-mm creepage and clearance is used for protection and robustness against ground potential differences. Its high efficiency and extended -40 to +125°C operating temperature range deliver more power in extreme conditions. Read the technical article, ‘Isolation 101: How to find the right isolation solution for your application’, to learn how reinforced isolation and the UCC12050, in particular, can help save time, effort, space and possibly cost over other isolated bias supply solutions.
This new high-density isolated power converter, the latest industry-leading device in TI’s power-management portfolio, offers small size and ease of use for any industrial application requiring isolation. Additionally, the new UCC12040 provides all of the same benefits with 3kVrms basic isolation.
The UCC12050 and UCC12040 are available in volume production from TI and authorised distributors in a 16-pin, 10.3x10.3x2.65mm SOIC package. Pricing starts at $3.90 and $3.15, respectively, in 1,000-unit quantities. Engineers can evaluate this product with the UCC12050EVM-022 evaluation module for $99.