{"id":6729,"date":"2026-06-21T10:04:51","date_gmt":"2026-06-21T10:04:51","guid":{"rendered":"https:\/\/materialparts.com\/ucc3895pw\/"},"modified":"2026-06-21T10:04:51","modified_gmt":"2026-06-21T10:04:51","slug":"ucc3895pw","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ucc3895pw\/","title":{"rendered":"UCC3895PW"},"content":{"rendered":"

Productos<\/h2>\n

The UCC3895PW from Texas Instruments is a BiCMOS advanced phase-shift PWM controller for phase-shifted full-bridge power converters. It is the commercial temperature range (0\u00b0C to 70\u00b0C) version of the UCC2895, supporting voltage-mode, peak current-mode, or average current-mode control with switching frequencies up to 1 MHz. The device is housed in a 20-pin TSSOP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Topology<\/td>\nPhase-Shifted Full Bridge<\/td>\n<\/tr>\n
Control Mode<\/td>\nCurrent, Feedforward, Voltage<\/td>\n<\/tr>\n
Switching Frequency<\/td>\nUp to 1 MHz<\/td>\n<\/tr>\n
Max Duty Cycle<\/td>\n100%<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n10 V to 16.5 V<\/td>\n<\/tr>\n
UVLO Threshold (On\/Off)<\/td>\n11 V \/ 9 V<\/td>\n<\/tr>\n
Error Amp Bandwidth<\/td>\n7 MHz<\/td>\n<\/tr>\n
Operating Current<\/td>\n5 mA typical at 500 kHz<\/td>\n<\/tr>\n
Start-up Current<\/td>\n150 \u00b5A<\/td>\n<\/tr>\n
Paquete<\/td>\nTSSOP-20 (6.5 x 6.4 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n0\u00b0C to 70\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Programmable output turn-on delay for ZVS operation<\/li>\n
  • Adaptive delay set (ADS) for optimized switching<\/li>\n
  • Bidirectional oscillator synchronization<\/li>\n
  • Voltage-mode, peak current-mode, or average current-mode control<\/li>\n
  • Programmable soft start, soft stop, and chip disable<\/li>\n
  • 0% to 100% duty-cycle control<\/li>\n
  • 7-MHz error amplifier<\/li>\n
  • BCDMOS process for low supply current<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Phase-shifted full-bridge DC-DC converters<\/li>\n
    • Server and telecom power supplies<\/li>\n
    • Industrial power systems<\/li>\n
    • High-density power architectures<\/li>\n
    • Battery charger systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The UCC3895PW from Texas Instruments is a BiCMOS advanced phase-shift PWM controller for phase-shifted full-bridge power converters. It is the commercial temperature range (0\u00b0C to 70\u00b0C) version of the UCC2895, supporting voltage-mode, peak current-mode, or average current-mode control with switching frequencies up to 1 MHz. The device is housed in a 20-pin TSSOP […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-6729","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"BiCMOS Phase-Shift PWM Controller, 1MHz, 0-70\u00b0C, TSSOP-20","date_code":"","package_case":"TSSOP-20 (6.5 x 6.4 x 1.0 mm)","in_stock":9104,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ucc3895.pdf","price":"$2.35 @ 1ku","product_introduction":"The UCC3895PW is a BiCMOS advanced phase-shift PWM controller from Texas Instruments designed for full-bridge power converter applications. It is functionally identical to the UCC2895 but specified for the 0\u00b0C to 70\u00b0C commercial temperature range. The device controls a full-bridge power stage by phase-shifting the switching of one half-bridge relative to the other, enabling constant-frequency PWM with resonant zero-voltage switching for high efficiency. The UCC3895 maintains compatibility with the UC3875\/6\/7\/8 family while adding enhanced control logic, adaptive delay set, and shutdown capability. The BCDMOS process significantly reduces supply current compared to bipolar alternatives.","working_principle":"The UCC3895PW generates four complementary output drive signals (OUTA\/B and OUTC\/D) for the two half-bridge legs of a full-bridge converter. Phase shift between the two legs controls power transfer. An external RT resistor programs the oscillator frequency (up to 1 MHz), while an external CT capacitor sets the timing ramp. The error amplifier (7 MHz GBW) processes the output voltage feedback. Programmable delays (DELAB\/DELCD) between complementary output pairs enable ZVS transitions. The ADS pin allows adaptive delay modulation based on load conditions. Current-mode control is implemented via the CS and RAMP pins. The SS\/DISB pin combines soft-start and shutdown functionality.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>DELAB<\/td>Output<\/td>Delay set for A-B leg<\/td><\/tr>
      2<\/td>DELCD<\/td>Output<\/td>Delay set for C-D leg<\/td><\/tr>
      3<\/td>ADS<\/td>Input<\/td>Adaptive delay set<\/td><\/tr>
      4<\/td>EA+<\/td>Input<\/td>Error amplifier non-inverting input<\/td><\/tr>
      5<\/td>EA-<\/td>Input<\/td>Error amplifier inverting input<\/td><\/tr>
      6<\/td>COMP<\/td>Output<\/td>Error amplifier output<\/td><\/tr>
      7<\/td>SS\/DISB<\/td>I\/O<\/td>Soft start \/ disable<\/td><\/tr>
      8<\/td>RT<\/td>Output<\/td>Oscillator timing resistor<\/td><\/tr>
      9<\/td>CT<\/td>I\/O<\/td>Oscillator timing capacitor<\/td><\/tr>
      10<\/td>SYNC<\/td>I\/O<\/td>Oscillator synchronization<\/td><\/tr>
      11<\/td>RAMP<\/td>Input<\/td>PWM comparator inverting input<\/td><\/tr>
      12<\/td>CS<\/td>Input<\/td>Current sense input<\/td><\/tr>
      13<\/td>REF<\/td>Output<\/td>5V reference (1.2%)<\/td><\/tr>
      14<\/td>OUTA<\/td>Output<\/td>Output driver A<\/td><\/tr>
      15<\/td>OUTB<\/td>Output<\/td>Output driver B<\/td><\/tr>
      16<\/td>PGND<\/td>Ground<\/td>Output stage ground<\/td><\/tr>
      17<\/td>OUTC<\/td>Output<\/td>Output driver C<\/td><\/tr>
      18<\/td>OUTD<\/td>Output<\/td>Output driver D<\/td><\/tr>
      19<\/td>VDD<\/td>Power<\/td>Supply voltage<\/td><\/tr>
      20<\/td>GND<\/td>Ground<\/td>Chip ground<\/td><\/tr><\/table>","application_scenarios":"
      • Commercial DC-DC converters with phase-shifted full-bridge topology<\/li>
      • Server power supplies requiring high efficiency<\/li>
      • Telecom rectifiers and bus converters<\/li>
      • Industrial power systems with ZVS requirements<\/li>
      • Battery charging and power management systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>UCC2895PW<\/td>TSSOP-20<\/td>-40\u00b0C to 85\u00b0C version<\/td><\/tr>
        Texas Instruments<\/td>UCC28950PW<\/td>TSSOP-24<\/td>Enhanced with synchronous rectification<\/td><\/tr>
        Texas Instruments<\/td>UCC3895DW<\/td>SOIC-20<\/td>SOIC package option<\/td><\/tr>
        Infineon<\/td>ICE2HS01G<\/td>DSO-14<\/td>LLC half-bridge controller<\/td><\/tr>
        STMicroelectronics<\/td>L6612<\/td>SO-16<\/td>Full-bridge controller alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6729","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=6729"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6729\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6729"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}