{"id":10690,"date":"2026-07-20T10:11:37","date_gmt":"2026-07-20T10:11:37","guid":{"rendered":"https:\/\/ic-vendor.com\/tps53353dqpt\/"},"modified":"2026-07-20T10:11:37","modified_gmt":"2026-07-20T10:11:37","slug":"tps53353dqpt","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/tps53353dqpt\/","title":{"rendered":"TPS53353DQPT"},"content":{"rendered":"

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

The TPS53353DQPT is a high-efficiency 20A synchronous step-down (buck) SWIFT converter from Texas Instruments, packaged in a 22-pin LSON-CLIP (DQP) 6 \u00d7 5 mm package. It features integrated 5.5 m\u03a9\/2.2 m\u03a9 NexFET power MOSFETs, D-CAP mode control for fast transient response, and an eco-mode for high light-load efficiency. The device supports a conversion input voltage range of 1.5V to 15V and output from 0.6V to 5.5V.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u529f\u80fd<\/td>\n20A Synchronous Buck SWIFT Converter<\/td>\n<\/tr>\n
Conversion Input Voltage<\/td>\n1.5V to 15V<\/td>\n<\/tr>\n
VDD Supply Voltage<\/td>\n4.5V to 25V<\/td>\n<\/tr>\n
Output Voltage<\/td>\n0.6V to 5.5V (adjustable)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n20A continuous<\/td>\n<\/tr>\n
Integrated MOSFETs<\/td>\n5.5 m\u03a9 (HS) \/ 2.2 m\u03a9 (LS)<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n250 kHz to 1 MHz (selectable)<\/td>\n<\/tr>\n
\u63a7\u5236\u6a21\u5f0f<\/td>\nD-CAP<\/td>\n<\/tr>\n
Reference Accuracy<\/td>\n1% (0.6V)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n22-LSON-CLIP (6 \u00d7 5 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C (ambient)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated 5.5 m\u03a9\/2.2 m\u03a9 NexFET power MOSFETs for high efficiency (> 91%)<\/li>\n
  • D-CAP mode control for ultra-fast transient response<\/li>\n
  • Auto-skip eco-mode for high light-load efficiency<\/li>\n
  • Adjustable overcurrent limit with thermal compensation<\/li>\n
  • Programmable soft-start: 0.7 ms, 1.4 ms, 2.8 ms, or 5.6 ms<\/li>\n<\/tr>\n

Prebiased output startup capability<\/li>\n<\/ul>\n

\u5e94\u7528<\/h2>\n
    \n
  • Server and storage point-of-load regulators<\/li>\n
  • Desktop and workstation core voltage rails<\/li>\n
  • Telecom infrastructure POL conversion<\/li>\n
  • FPGA and ASIC core power delivery<\/li>\n
  • High-current DDR memory VDDQ power<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    Product Overview The TPS53353DQPT is a high-efficiency 20A synchronous step-down (buck) SWIFT converter from Texas Instruments, packaged in a 22-pin LSON-CLIP (DQP) 6 \u00d7 5 mm package. It features integrated 5.5 m\u03a9\/2.2 m\u03a9 NexFET power MOSFETs, D-CAP mode control for fast transient response, and an eco-mode for high light-load efficiency. The device supports a conversion […]<\/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":[2031],"chip_brand":[138],"class_list":["post-10690","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-tps53353dqpt","chip_brand-ti"],"acf":{"brief_explanation":"20A synchronous buck SWIFT converter, D-CAP, 1.5-15V input, 5.5\/2.2m\u03a9 FETs, 22-LSON-CLIP","date_code":"","package_case":"22-LSON-CLIP (6.0 \u00d7 5.0 \u00d7 0.9 mm)","in_stock":5657,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps53353.pdf","price":"$3.25 @ 1ku","product_introduction":"The TPS53353 is a D-CAP mode, 20A synchronous buck converter with integrated NexFET power MOSFETs, designed for high-efficiency, high-current point-of-load applications. The device integrates 5.5 m\u03a9 high-side and 2.2 m\u03a9 low-side MOSFETs using TI's NexFET technology, achieving over 91% efficiency from 12V to 1.5V at 20A. The D-CAP mode control provides fast transient response without requiring external compensation components. Features include auto-skip eco-mode, selectable switching frequency from 250 kHz to 1 MHz, programmable soft-start, adjustable overcurrent limit, and comprehensive protection including OVP, UVLO, and thermal shutdown.","working_principle":"The TPS53353 employs D-CAP (Direct Capacitor Area Proportional) mode control, a constant-on-time architecture with internal ripple injection. The on-time is set proportional to VOUT\/VIN to maintain a pseudo-constant switching frequency. When the output voltage drops below the 0.6V reference, the high-side MOSFET is turned on for the programmed on-time. The low-side MOSFET is turned on during the off-time to freewheel the inductor current. The internal ripple injection network allows the use of all-ceramic output capacitors without requiring additional ESR for stability. In eco-mode, the device transitions to discontinuous conduction mode (DCM) at light loads by skipping switching pulses, which reduces gate drive and switching losses to maintain high efficiency. The overcurrent limit is adjustable via an external resistor and includes thermal compensation to maintain consistent protection across temperature.","pin_description":"
    Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
    1<\/td>VDD<\/td>Power<\/td>IC supply voltage (4.5-25V)<\/td><\/tr>
    2<\/td>EN<\/td>Input<\/td>Enable \u2014 float or tie to VDD for auto-startup<\/td><\/tr>
    3<\/td>COMP<\/td>Output<\/td>Error amplifier output \u2014 leave floating for D-CAP<\/td><\/tr>
    4<\/td>FB<\/td>Input<\/td>Feedback \u2014 connect resistor divider from output<\/td><\/tr>
    5<\/td>SS<\/td>Output<\/td>Soft start \u2014 capacitor sets startup time<\/td><\/tr>
    6<\/td>MODE<\/td>Input<\/td>Mode: auto-skip or forced CCM<\/td><\/tr>
    7<\/td>RF<\/td>Input<\/td>Frequency set resistor<\/td><\/tr>
    8<\/td>ILIM<\/td>Input<\/td>Current limit set resistor<\/td><\/tr>
    9<\/td>PGOOD<\/td>Output<\/td>Power good open-drain output<\/td><\/tr>
    10<\/td>GND<\/td>Power<\/td>Signal ground<\/td><\/tr>
    11-12<\/td>PGND<\/td>Power<\/td>Power ground (low-side FET source)<\/td><\/tr>
    13-15<\/td>SW<\/td>Output<\/td>Switch node \u2014 connect to inductor<\/td><\/tr>
    16-18<\/td>PVIN<\/td>Power<\/td>Conversion input voltage (1.5-15V)<\/td><\/tr>
    19<\/td>BST<\/td>Power<\/td>Bootstrap \u2014 cap from BST to SW<\/td><\/tr>
    20-22<\/td>VIN<\/td>Power<\/td>Main power input<\/td><\/tr>
    EP<\/td>Thermal Pad<\/td>Power<\/td>Exposed pad (connect to PGND plane)<\/td><\/tr><\/table>","application_scenarios":"
    • 12V to 1.0V core rail for server CPU at 20A in 1U rackmount<\/li>
    • 12V to 1.5V FPGA VCCINT power delivery with fast transient response<\/li>
    • 5V to 1.2V DDR4 VDDQ rail in high-density memory modules<\/li>
    • Telecom 48V-to-12V intermediate bus POL conversion<\/li>
    • Storage SSD controller core voltage regulation at high current<\/li><\/ul>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      TI<\/td>TPS548B28<\/td>QFN-28<\/td>Newer 20A, smaller Pb-free package<\/td><\/tr>
      TI<\/td>TPS53354DQPT<\/td>LSON-22<\/td>Pin-compatible, 30A variant<\/td><\/tr>
      Infineon<\/td>IR3897<\/td>PQFN-28<\/td>12A integrated buck, 4.5-14V<\/td><\/tr>
      Monolithic Power<\/td>MP87568<\/td>QFN-28<\/td>30A, 4.5-16V buck converter<\/td><\/tr>
      Richtek<\/td>RT8859<\/td>QFN-32<\/td>30A, 4.5-14V, PMBus<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10690"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10690\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10690"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}