{"id":6451,"date":"2026-06-16T03:48:45","date_gmt":"2026-06-16T03:48:45","guid":{"rendered":"https:\/\/materialparts.com\/lm5160xdntt\/"},"modified":"2026-06-16T03:48:45","modified_gmt":"2026-06-16T03:48:45","slug":"lm5160xdntt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm5160xdntt\/","title":{"rendered":"LM5160XDNTT"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LM5160XDNTT is a 65V, 2A synchronous step-down (buck) and Fly-Buck converter from Texas Instruments with integrated high-side and low-side MOSFETs. Using adaptive constant on-time (COT) control, it requires no external loop compensation and delivers fast transient response. The 4.5V to 65V input range, 2A output, and selectable DCM\/FPWM modes make it ideal for industrial, telecom, and isolated Fly-Buck power supply designs in a compact 12-pin WSON (4x4mm) package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nSynchronous Buck \/ Fly-Buck<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n4.5V to 65V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n2V to 60V (adjustable)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n2A maximum<\/td>\n<\/tr>\n
Switch Current Limit<\/td>\n2.5A (typical)<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n50kHz to 1MHz (resistor programmable)<\/td>\n<\/tr>\n
\u0648\u0636\u0639 \u0627\u0644\u062a\u062d\u0643\u0645<\/td>\nAdaptive Constant On-Time (COT)<\/td>\n<\/tr>\n
Duty Cycle<\/td>\nUp to 92%<\/td>\n<\/tr>\n
Feedback Voltage Accuracy<\/td>\n\u00b11% over temperature<\/td>\n<\/tr>\n
Integrated MOSFETs<\/td>\nHigh-side + Low-side (synchronous)<\/td>\n<\/tr>\n
External Schottky Required<\/td>\nNo<\/td>\n<\/tr>\n
FPWM\/DCM Selection<\/td>\nYes (pin selectable)<\/td>\n<\/tr>\n
Soft Start<\/td>\nProgrammable (external capacitor)<\/td>\n<\/tr>\n
UVLO<\/td>\nAdjustable with hysteresis<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n12-pin WSON (4 x 4mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 4.5V to 65V wide input voltage range<\/li>\n
  • Integrated high-side and low-side MOSFETs \u2014 no external Schottky<\/li>\n
  • 2A maximum load current with 2.5A current limit<\/li>\n
  • Adaptive COT control \u2014 no external loop compensation needed<\/li>\n
  • Fast transient response with high step-down ratios<\/li>\n
  • Selectable forced PWM (FPWM) or DCM operation<\/li>\n
  • FPWM mode supports multi-output Fly-Buck isolated topologies<\/li>\n
  • Resistor-adjustable switching frequency up to 1MHz<\/li>\n
  • Programmable soft start with pre-biased startup<\/li>\n
  • \u00b11% feedback voltage reference accuracy<\/li>\n
  • Adjustable input UVLO with hysteresis<\/li>\n
  • Thermal shutdown with hysteresis<\/li>\n
  • Peak and valley current limit protection<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial PLC and I\/O module power<\/li>\n
    • IGBT gate driver isolated bias supplies (Fly-Buck)<\/li>\n
    • Telecom primary and secondary side power<\/li>\n
    • Smart meter power line communication supplies<\/li>\n
    • Low-power isolated DC\/DC converters<\/li>\n
    • Automotive and battery-powered systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM5160XDNTT is a 65V, 2A synchronous step-down (buck) and Fly-Buck converter from Texas Instruments with integrated high-side and low-side MOSFETs. Using adaptive constant on-time (COT) control, it requires no external loop compensation and delivers fast transient response. The 4.5V to 65V input range, 2A output, and selectable DCM\/FPWM modes make it ideal […]<\/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-6451","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"65V 2A sync buck\/Fly-Buck, integrated FETs, COT control, no compensation, 50k-1MHz, 4x4mm WSON-12","date_code":"","package_case":"12-pin WSON (4.0 x 4.0 x 0.8mm)","in_stock":6700,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm5160.pdf","price":"$0.86 @ 1ku","product_introduction":"The LM5160XDNTT is a 65V, 2A synchronous buck\/Fly-Buck DC\/DC converter from Texas Instruments with both high-side and low-side MOSFETs integrated on-chip, eliminating the need for an external Schottky diode. The adaptive constant on-time (COT) control scheme requires no external loop compensation while delivering fast transient response and supporting high step-down ratios. The switching frequency is resistor-programmable from 50kHz to 1MHz. The FPWM pin selects between forced continuous conduction mode (for multi-output Fly-Buck isolated topologies) and DCM mode (for high light-load efficiency). The \u00b11% feedback reference ensures tight output regulation over the full -40\u00b0C to +125\u00b0C temperature range. Protection features include peak\/valley current limiting, adjustable UVLO, and thermal shutdown.","working_principle":"The LM5160 uses an adaptive constant on-time (COT) control scheme. When the FB pin voltage falls below the reference, the high-side MOSFET turns on for a pre-calculated on-time that is inversely proportional to VIN, resulting in a nearly constant switching frequency. After the on-time, the high-side FET turns off and the low-side synchronous FET turns on until the inductor current decays to the valley current limit threshold or the FB voltage rises above the reference. A transconductance error amplifier minimizes the steady-state DC error between the average FB voltage and the internal reference, providing \u00b11% regulation accuracy without the Type-II\/III compensation networks required by voltage-mode controllers. In FPWM mode, the low-side FET is kept on even at zero load (allowing negative inductor current), which is essential for Fly-Buck topologies where the coupled inductor secondary must always have a well-defined magnetizing current waveform. In DCM mode, the low-side FET turns off when the inductor current reaches zero, preventing negative current and improving light-load efficiency.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>VIN<\/td>Input supply (4.5V to 65V)<\/td><\/tr>
      2<\/td>EN\/UVLO<\/td>Enable \/ UVLO adjust (external resistor divider)<\/td><\/tr>
      3<\/td>RON<\/td>On-time programming resistor (to VIN)<\/td><\/tr>
      4<\/td>FB<\/td>Feedback voltage (connect to output divider)<\/td><\/tr>
      5<\/td>VCC<\/td>Internal 5V LDO output (bypass with cap)<\/td><\/tr>
      6<\/td>SS<\/td>Soft start programming (external cap)<\/td><\/tr>
      7<\/td>FPWM<\/td>Mode select: high=FPWM, float\/low=DCM<\/td><\/tr>
      8<\/td>GND<\/td>Signal ground<\/td><\/tr>
      9<\/td>SW<\/td>Switch node (connect to inductor)<\/td><\/tr>
      10<\/td>BOOT<\/td>Bootstrap cap (to SW)<\/td><\/tr>
      11<\/td>PGND<\/td>Power ground<\/td><\/tr>
      12<\/td>PGND<\/td>Power ground<\/td><\/tr>
      Pad<\/td>PGND<\/td>Exposed thermal pad (connect to GND plane)<\/td><\/tr><\/table>","application_scenarios":"
      • Isolated IGBT Gate Driver Bias (Fly-Buck):<\/b> Use the LM5160 in Fly-Buck topology to generate +15V\/-5V isolated bias supplies for IGBT gate drivers. The 65V input accepts the DC bus voltage directly. A coupled inductor provides isolation while the FPWM mode ensures continuous magnetizing current for regulated isolated outputs. No optocoupler is needed since the primary-side output regulates the isolated secondary.<\/li>
      • Industrial PLC I\/O Module Power:<\/b> Convert 24V bus to 5V\/2A for a PLC analog I\/O module. The COT control's fast transient response handles the I\/O module's pulsed current loads without large output capacitors. The 1MHz switching frequency allows a small 4.7\u00b5H inductor, minimizing module height. The \u00b11% output accuracy meets PLC voltage regulation requirements.<\/li>
      • Telecom 48V to 12V Intermediate Bus:<\/b> Convert a 48V telecom bus (36V-72V range) to 12V intermediate bus at up to 2A. The 65V maximum input accommodates the 72V peak. In DCM mode, efficiency at light load exceeds 85%, reducing power waste in standby. The integrated MOSFETs simplify the BOM compared to controller+external-FET solutions.<\/li><\/ul>","alternative_models":"
        Model<\/th>Vin Max<\/th>Iout<\/th>Control<\/th>Key Difference<\/th><\/tr>
        LM5160ADNTT<\/td>65V<\/td>2A<\/td>COT<\/td>External VCC bias option for high Vin efficiency<\/td><\/tr>
        LM5012<\/td>100V<\/td>2.5A<\/td>COT<\/td>Higher Vin, non-synchronous<\/td><\/tr>
        LM5161<\/td>65V<\/td>1A<\/td>COT<\/td>Lower current, smaller solution<\/td><\/tr>
        TPS54160<\/td>60V<\/td>1.5A<\/td>Current Mode<\/td>TI, lower Vin, requires compensation<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6451"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6451\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6451"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6451"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}