{"id":6955,"date":"2026-06-22T03:16:51","date_gmt":"2026-06-22T03:16:51","guid":{"rendered":"https:\/\/materialparts.com\/tps53315rgft\/"},"modified":"2026-06-22T03:16:51","modified_gmt":"2026-06-22T03:16:51","slug":"tps53315rgft","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tps53315rgft\/","title":{"rendered":"TPS53315RGFT"},"content":{"rendered":"

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

The TPS53315RGFT from Texas Instruments is a 12A synchronous step-down converter with integrated MOSFETs, D-CAP control, 3-15V input, and 40-pin VQFN package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n12A Synchronous Step-Down Converter with Integrated MOSFETs<\/td>\n<\/tr>\n
Input Voltage (Conversion)<\/td>\n3V 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>\n12A (continuous)<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n250 kHz to 1 MHz (resistor programmable)<\/td>\n<\/tr>\n
\u63a7\u5236\u6a21\u5f0f<\/td>\nD-CAP (Direct Control with Adaptive On-Time)<\/td>\n<\/tr>\n
High-Side FET RDS(ON)<\/td>\n19 mOhm (integrated)<\/td>\n<\/tr>\n
Low-Side FET RDS(ON)<\/td>\n7 mOhm (integrated)<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.6V, 1% accuracy<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n320 uA (typical)<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\nLess than 10 uA<\/td>\n<\/tr>\n
Max Duty Cycle<\/td>\n90%<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 96%<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVQFN-40 (RGF, 7 x 5 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated 19mOhm\/7mOhm power MOSFETs<\/li>\n
  • D-CAP mode for fast transient response<\/li>\n
  • Auto-skip Eco-mode for light-load efficiency<\/li>\n
  • Selectable switching frequency via external resistor<\/li>\n
  • Internal soft-start with selectable durations (0.7\/1.4\/2.8\/5.6ms)<\/li>\n
  • Pre-charged start-up (prebias) capability<\/li>\n
  • Adjustable overcurrent limit via external resistor<\/li>\n
  • 5V LDO output for gate drive<\/li>\n
  • Integrated boost switch<\/li>\n
  • OVP, UVP, UVLO, and over-temperature protection<\/li>\n
  • Open-drain power-good output<\/li>\n
  • Supports all-ceramic output capacitors<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Point-of-load power supplies<\/li>\n
    • Embedded computing systems<\/li>\n
    • Telecom and networking equipment<\/li>\n
    • High-current POL regulation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS53315RGFT from Texas Instruments is a 12A synchronous step-down converter with integrated MOSFETs, D-CAP control, 3-15V input, and 40-pin VQFN package. Key Specifications Type 12A Synchronous Step-Down Converter with Integrated MOSFETs Input Voltage (Conversion) 3V to 15V VDD Supply Voltage 4.5V to 25V Output Voltage 0.6V to 5.5V (adjustable) Output Current 12A […]<\/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":[19,13],"tags":[],"chip_brand":[138],"class_list":["post-6955","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"12A Buck Conv, Int MOSFET, D-CAP, 3-15Vin, VQFN-40","date_code":"","package_case":"VQFN-40 (7.0 x 5.0 x 1.0 mm, 0.5mm pitch)","in_stock":5678,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps53315.pdf","price":"$2.70 @ 1ku","product_introduction":"The TPS53315RGFT from Texas Instruments is a 12A synchronous step-down converter with integrated power MOSFETs in a compact 7x5mm VQFN-40 package. The device integrates a 19mOhm high-side and 7mOhm low-side MOSFET, providing high-efficiency power conversion up to 96% from a 3V to 15V input rail. The D-CAP control mode enables fast transient response with no external compensation network required, simplifying design. The switching frequency is programmable from 250kHz to 1MHz via a single external resistor, allowing optimization for efficiency or size. The Auto-Skip Eco-mode reduces switching frequency at light loads to maintain high efficiency, while forced continuous conduction mode is also selectable via the MODE pin. The 0.6V reference with 1% accuracy ensures precise output voltage regulation. The integrated boost switch eliminates the need for an external boot diode. The device features internal soft-start with four selectable durations, prebias startup capability, and comprehensive protection including adjustable overcurrent limit, over-voltage, under-voltage, UVLO, and over-temperature shutdown.","working_principle":"The TPS53315RGFT uses TI's D-CAP (Direct Control with Adaptive On-Time) control mode, which is a constant on-time architecture with adaptive on-time adjustment to maintain a pseudo-fixed switching frequency. When the output voltage drops below the reference, the controller triggers an on-time pulse whose duration is proportional to VOUT\/VIN, maintaining the target frequency. The low-side MOSFET is turned on during the off-time, creating a synchronous buck converter. The D-CAP mode provides inherently fast transient response because there is no error amplifier compensation network to limit the bandwidth; the output voltage ripple provides the feedback signal directly. In Auto-Skip Eco-mode, when the inductor current reaches zero at light loads, the low-side MOSFET is turned off to prevent negative inductor current (discontinuous conduction mode). The switching frequency then decreases proportionally with load current, reducing switching losses. The adaptive zero-crossing circuit optimizes the low-side FET turn-off timing to minimize body diode conduction. The overcurrent limit is set by an external resistor on the ILIMIT pin, which programs a reference voltage for the current sense comparator. When the voltage across the low-side MOSFET exceeds this threshold during the off-time, the controller skips on-time pulses to limit the output current.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      Power<\/td>VIN<\/td>Power<\/td>Conversion input voltage (3-15V)<\/td><\/tr>
      Power<\/td>VDD<\/td>Power<\/td>Supply voltage (4.5-25V)<\/td><\/tr>
      Power<\/td>SW<\/td>Output<\/td>Switch node (inductor connection)<\/td><\/tr>
      Power<\/td>GND, PGND<\/td>Power<\/td>Ground connections<\/td><\/tr>
      Control<\/td>VOUT\/FB<\/td>Input<\/td>Output voltage feedback (0.6V ref)<\/td><\/tr>
      Control<\/td>EN<\/td>Input<\/td>Enable (HIGH=on)<\/td><\/tr>
      Control<\/td>MODE<\/td>Input<\/td>Mode select (skip\/PWM\/forced CCM)<\/td><\/tr>
      Control<\/td>SS<\/td>Input<\/td>Soft-start time selection<\/td><\/tr>
      Control<\/td>FREQ<\/td>Input<\/td>Switching frequency programming resistor<\/td><\/tr>
      Control<\/td>ILIMIT<\/td>Input<\/td>Overcurrent limit programming resistor<\/td><\/tr>
      Control<\/td>PGOOD<\/td>Output<\/td>Power-good (open-drain)<\/td><\/tr>
      Bootstrap<\/td>BST<\/td>I\/O<\/td>Boost capacitor for high-side driver<\/td><\/tr>
      Bias<\/td>VREG5<\/td>Output<\/td>5V LDO output for gate drive<\/td><\/tr><\/table>","application_scenarios":"
      • 12V to 1.2V FPGA core power at 12A with D-CAP fast transient and 96% peak efficiency<\/li>
      • 5V to 3.3V POL with Auto-Skip Eco-mode for idle-power-sensitive embedded computing<\/li>
      • 12V to 1.8V DDR3 VDDQ at 10A with 500kHz switching and all-ceramic output capacitors<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS53319RGFT<\/td>VQFN-40<\/td>18A, higher current version<\/td><\/tr>
        TI<\/td>TPS53316RGFT<\/td>VQFN-40<\/td>6A, lower current version<\/td><\/tr>
        Monolithic Power<\/td>MP8765GLT-P<\/td>QFN-32<\/td>12A, integrated FET, similar<\/td><\/tr>
        Infineon<\/td>IR3899MTRPBF<\/td>PQFN-35<\/td>12A, integrated FET buck<\/td><\/tr>
        TI<\/td>TPS54560BDDA<\/td>HSOIC-8<\/td>5A, controller only, external FET<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6955","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=6955"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6955\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6955"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}