{"id":2527,"date":"2026-05-22T03:29:25","date_gmt":"2026-05-22T03:29:25","guid":{"rendered":"https:\/\/materialparts.com\/tps54320rhlr\/"},"modified":"2026-05-22T03:29:25","modified_gmt":"2026-05-22T03:29:25","slug":"tps54320rhlr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps54320rhlr\/","title":{"rendered":"TPS54320RHLR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The TPS54320RHLR from Texas Instruments is a 4.5V to 17V input, 3A synchronous step-down SWIFT converter with integrated 57mOhm\/50mOhm MOSFETs. It features adjustable switching frequency from 200kHz to 1.2MHz, power good output, and a compact VQFN-14 package. The device is designed for point-of-load power conversion in broadband, networking, and DSP\/FPGA applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u62d3\u6251\u7ed3\u6784<\/td>\nSynchronous Buck (SWIFT)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4.5V to 17V (VIN), 1.6V to 17V (PVIN)<\/td>\n<\/tr>\n
Output Voltage<\/td>\n0.8V to 15V (adjustable)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n3A maximum<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n200kHz to 1.2MHz (adjustable)<\/td>\n<\/tr>\n
MOSFET Rds(on)<\/td>\n57mOhm (HS) \/ 50mOhm (LS)<\/td>\n<\/tr>\n
Shutdown Iq<\/td>\n2uA<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +150C (TJ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVQFN-14 (3.5×3.5mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated 57mOhm\/50mOhm MOSFETs<\/li>\n
  • Adjustable switching frequency via resistor<\/li>\n
  • Power Good output for sequencing<\/li>\n
  • Adjustable soft-start with tracking<\/li>\n
  • Split VIN\/PVIN rails for efficiency optimization<\/li>\n
  • Hiccup mode overcurrent protection<\/li>\n
  • Pre-bias start-up capability<\/li>\n
  • UVLO with programmable threshold<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Broadband and networking equipment<\/li>\n
    • DSP and FPGA point-of-load power<\/li>\n
    • Industrial control power supplies<\/li>\n
    • Telecom distributed power systems<\/li>\n
    • Server and storage power rails<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS54320RHLR from Texas Instruments is a 4.5V to 17V input, 3A synchronous step-down SWIFT converter with integrated 57mOhm\/50mOhm MOSFETs. It features adjustable switching frequency from 200kHz to 1.2MHz, power good output, and a compact VQFN-14 package. The device is designed for point-of-load power conversion in broadband, networking, and DSP\/FPGA applications. Key Specifications […]<\/p>\n","protected":false},"author":2,"featured_media":2532,"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-2527","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"3A Synchronous Buck Converter, 4.5-17V input, integrated MOSFETs, VQFN-14","date_code":"","package_case":"VQFN-14 (3.5 x 3.5 x 0.95 mm)","in_stock":3145,"datasheet":"https:\/\/www.ti.com\/product\/TPS54320","price":"$0.88 @ 1ku","product_introduction":"The TPS54320RHLR from Texas Instruments is a 3A synchronous step-down converter in the SWIFT family with integrated power MOSFETs (57mOhm\/50mOhm). It accepts input voltages from 4.5V to 17V and provides an adjustable output from 0.8V to 15V. The switching frequency is adjustable from 200kHz to 1.2MHz via an external resistor, allowing optimization of efficiency and solution size. Power Good output and adjustable soft-start with tracking support power sequencing in multi-rail systems. The split VIN\/PVIN feature enables independent bias supply for improved efficiency at low output voltages.","working_principle":"The TPS54320RHLR uses a current-mode control architecture with an internal oscillator set by an external resistor. The high-side MOSFET connects the input to the inductor during the on-time, charging the output capacitor and supplying the load. During the off-time, the low-side MOSFET provides a path for inductor current freewheeling. The feedback loop regulates the output voltage by adjusting the duty cycle. Current-mode control provides cycle-by-cycle current limiting. In hiccup mode overcurrent protection, the device cycles through periods of switching and rest to limit average fault current. The Power Good comparator monitors the output voltage and asserts when within regulation. The soft-start circuit controls output voltage ramp-up to limit inrush current.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BOOT<\/td>Connect<\/td>Bootstrap capacitor connection<\/td><\/tr>
      2<\/td>VIN<\/td>Power<\/td>Input voltage (4.5-17V)<\/td><\/tr>
      3<\/td>PVIN<\/td>Power<\/td>Power stage input (1.6-17V)<\/td><\/tr>
      4<\/td>VIN<\/td>Power<\/td>Input voltage<\/td><\/tr>
      5<\/td>SS\/TRK<\/td>Control<\/td>Soft-start \/ tracking input<\/td><\/tr>
      6<\/td>COMP<\/td>Control<\/td>Error amplifier compensation output<\/td><\/tr>
      7<\/td>FB<\/td>Input<\/td>Feedback voltage input<\/td><\/tr>
      8<\/td>PG<\/td>Output<\/td>Power Good output (open drain)<\/td><\/tr>
      9<\/td>EN<\/td>Control<\/td>Enable input (active high)<\/td><\/tr>
      10<\/td>RT\/CLK<\/td>Control<\/td>Frequency set resistor \/ external clock sync<\/td><\/tr>
      11-12<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      13-14<\/td>SW<\/td>Output<\/td>Switch node (inductor connection)<\/td><\/tr><\/table>","application_scenarios":"
      • Broadband and networking equipment point-of-load power<\/li>
      • DSP and FPGA core and I\/O voltage regulation<\/li>
      • Industrial control and automation power supplies<\/li>
      • Telecom distributed power architecture (DPA)<\/li>
      • Server and storage system intermediate bus conversion<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>TPS54325RHLR<\/td>VQFN-14<\/td>Pin-compatible 5A version<\/td><\/tr>
        Texas Instruments<\/td>TPS5430DDAR<\/td>SOIC-8<\/td>3A, 36V input, non-synchronous<\/td><\/tr>
        onsemi<\/td>NCP3235NMNTXG<\/td>QFN-16<\/td>5A synchronous buck<\/td><\/tr>
        Infineon<\/td>IR3827MTRPBF<\/td>PQFN-16<\/td>4A integrated buck regulator<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=2527"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2527\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2532"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2527"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}