{"id":3551,"date":"2026-06-06T10:25:45","date_gmt":"2026-06-06T10:25:45","guid":{"rendered":"https:\/\/materialparts.com\/ucc28950pwr\/"},"modified":"2026-06-06T10:25:45","modified_gmt":"2026-06-06T10:25:45","slug":"ucc28950pwr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ucc28950pwr\/","title":{"rendered":"UCC28950PWR"},"content":{"rendered":"

Productos<\/h2>\n

The UCC28950PWR from Texas Instruments is a phase-shift full-bridge controller with synchronous rectification output. Operating at up to 1 MHz switching frequency, it achieves high efficiency through zero-voltage switching (ZVS) and adaptive synchronous rectifier control. With programmable slope compensation, peak current mode control, and burst mode for light-load efficiency, it targets 200W-1kW isolated power converters in a 20-pin TSSOP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/td>\nPhase-Shift Full-Bridge Controller<\/td>\n<\/tr>\n
Topology<\/td>\nPhase-Shift Full-Bridge with SR<\/td>\n<\/tr>\n
Control Mode<\/td>\nPeak Current Mode<\/td>\n<\/tr>\n
Switching Frequency<\/td>\nUp to 1 MHz<\/td>\n<\/tr>\n
Output Voltage Ref<\/td>\n0.75V (+\/-1%)<\/td>\n<\/tr>\n
Sync Rect Control<\/td>\nAdaptive (Out-of-Phase + Predictive)<\/td>\n<\/tr>\n
Light Load Mode<\/td>\nBurst mode for efficiency<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n8.2V – 15V (UVLO 7.3V start)<\/td>\n<\/tr>\n
Paquete<\/td>\nTSSOP-20 (PWR)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to 125 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Phase-shift full-bridge control for ZVS operation<\/li>\n
  • Adaptive synchronous rectifier timing for high efficiency<\/li>\n
  • Programmable burst mode for light-load efficiency<\/li>\n
  • Peak current mode control with slope compensation<\/li>\n
  • Sync-to-primary clock output for cascaded designs<\/li>\n
  • Programmable output over-voltage protection<\/li>\n
  • Enable and UVLO with programmable hysteresis<\/li>\n
  • 400 kHz to 1 MHz switching frequency range<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Server and telecom DC-DC bus converters<\/li>\n
    • Industrial power supplies (200W-1kW)<\/li>\n
    • Battery charger and renewable energy<\/li>\n
    • LED lighting power supplies<\/li>\n
    • Electric vehicle on-board chargers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The UCC28950PWR from Texas Instruments is a phase-shift full-bridge controller with synchronous rectification output. Operating at up to 1 MHz switching frequency, it achieves high efficiency through zero-voltage switching (ZVS) and adaptive synchronous rectifier control. With programmable slope compensation, peak current mode control, and burst mode for light-load efficiency, it targets 200W-1kW isolated […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-3551","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Phase-shift full-bridge controller, ZVS, sync rect, 1MHz, burst mode, TSSOP-20","date_code":"","package_case":"TSSOP-20 (6.50 x 4.40 x 1.05 mm)","in_stock":11847,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ucc28950.pdf","price":"$2.95 @ 1ku","product_introduction":"The UCC28950PWR from Texas Instruments is an advanced phase-shift full-bridge controller with integrated synchronous rectifier control. It enables zero-voltage switching (ZVS) across a wide load range by controlling the phase relationship between the two half-bridge legs. The adaptive synchronous rectifier timing algorithm combines out-of-phase and predictive methods to minimize body-diode conduction, achieving high efficiency in both heavy and light-load conditions. With programmable burst mode, peak current mode control, and a switching frequency range of 400 kHz to 1 MHz, it targets high-power isolated DC-DC converters from 200W to 1kW.","working_principle":"The UCC28950PWR controls a full-bridge converter by phase-shifting the switching of one half-bridge relative to the other. During the overlap period when both switches in a leg are off, the transformer leakage inductance resonates with the MOSFET capacitances, achieving ZVS turn-on. The controller uses peak current mode with a leading-edge blanking circuit and programmable slope compensation for stability. The synchronous rectifier driver timing adapts dynamically: at heavy loads it uses the OUTE\/OUTF signals in out-of-phase mode, while at light loads predictive timing compensates for the reduced energy available for commutation. Burst mode disables switching cycles when the load drops below a programmable threshold, reducing switching losses at light load.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SS\/EN<\/td>I\/O<\/td>Soft-start \/ enable<\/td><\/tr>
      2<\/td>COMP<\/td>I\/O<\/td>Error amplifier output \/ compensation<\/td><\/tr>
      3<\/td>FB<\/td>Input<\/td>Voltage feedback (0.75V ref)<\/td><\/tr>
      4<\/td>RSLOPE<\/td>Input<\/td>Slope compensation resistor<\/td><\/tr>
      5<\/td>RT<\/td>Input<\/td>Switching frequency programming<\/td><\/tr>
      6<\/td>BURST<\/td>Input<\/td>Burst mode threshold<\/td><\/tr>
      7<\/td>SYNC<\/td>I\/O<\/td>Clock sync input\/output<\/td><\/tr>
      8<\/td>CS<\/td>Input<\/td>Current sense input<\/td><\/tr>
      9<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      10<\/td>VDD<\/td>Power<\/td>Supply (8.2-15V)<\/td><\/tr>
      11-14<\/td>OUTA-D<\/td>Output<\/td>Full-bridge gate drives<\/td><\/tr>
      15-16<\/td>OUTE-F<\/td>Output<\/td>Sync rectifier gate drives<\/td><\/tr>
      17-20<\/td>Misc<\/td>-<\/td>OA\/OB, REF, PWRGND<\/td><\/tr><\/table>","application_scenarios":"
      • Server DC-DC: 48V-to-12V bus converters with ZVS full-bridge<\/li>
      • Telecom rectifiers: Isolated 300W+ DC-DC with synchronous rectification<\/li>
      • Battery chargers: Constant-current\/constant-voltage phase-shift control<\/li>
      • EV on-board chargers: High-efficiency isolated PFC output stage<\/li>
      • Industrial power: High-power supplies requiring wide-load-range efficiency<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>UCC28951PWR<\/td>TSSOP-20<\/td>Enhanced version, improved SR timing<\/td><\/tr>
        TI<\/td>LM5046MH<\/td>HTSSOP-20<\/td>Phase-shift full-bridge, 100V input<\/td><\/tr>
        Infineon<\/td>ICE2HS01G<\/td>DSO-14<\/td>Phase-shift full-bridge controller<\/td><\/tr>
        TI<\/td>UCC28910DR<\/td>SOIC-8<\/td>Primary-side regulated flyback<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3551"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3551\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3551"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}