{"id":9118,"date":"2026-07-02T11:35:35","date_gmt":"2026-07-02T11:35:35","guid":{"rendered":"https:\/\/materialparts.com\/mpq4420agj-aec1\/"},"modified":"2026-07-03T08:04:03","modified_gmt":"2026-07-03T08:04:03","slug":"mpq4420agj-aec1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mpq4420agj-aec1\/","title":{"rendered":"MPQ4420AGJ-AEC1"},"content":{"rendered":"

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

The MPS MPQ4420AGJ-AEC1 is a 55 V, 2 A, synchronous buck converter with integrated 140 m\u03a9 high-side and 90 m\u03a9 low-side MOSFETs. Operating from 4 V to 55 V input, it delivers adjustable output from 0.8 V to 90% of VIN at up to 2 A. AEC-Q100 qualified and housed in a QFN-10 (3 x 3 mm) package, it is designed for automotive and industrial power supply applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4 V to 55 V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n0.8 V to 0.9 \u00d7 VIN<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n2 A<\/td>\n<\/tr>\n
HS RDS(on)<\/td>\n140 m\u03a9<\/td>\n<\/tr>\n
LS RDS(on)<\/td>\n90 m\u03a9<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n200 kHz to 2 MHz (programmable)<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n12 \u00b5A (typ, PFM mode)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 \u00b0C to +150 \u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nQFN-10 (3 x 3 mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q100 qualified for automotive applications<\/li>\n
  • 4 V to 55 V wide input voltage range<\/li>\n
  • Integrated 140 m\u03a9 HS \/ 90 m\u03a9 LS MOSFETs<\/li>\n
  • Programmable switching frequency: 200 kHz to 2 MHz<\/li>\n
  • PFM mode for high efficiency at light load<\/li>\n
  • External compensation for design flexibility<\/li>\n
  • Power-good indicator and enable control<\/li>\n
  • Comprehensive protection: OCP, SCP, UVLO, OTP<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive 12V\/24V\/48V system power supply<\/li>\n
    • Industrial distributed power architectures<\/li>\n
    • FPGA and DSP point-of-load regulation<\/li>\n
    • Automotive infotainment and ADAS power<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MPS MPQ4420AGJ-AEC1 is a 55 V, 2 A, synchronous buck converter with integrated 140 m\u03a9 high-side and 90 m\u03a9 low-side MOSFETs. Operating from 4 V to 55 V input, it delivers adjustable output from 0.8 V to 90% of VIN at up to 2 A. AEC-Q100 qualified and housed in a QFN-10 […]<\/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":[684],"chip_brand":[172],"class_list":["post-9118","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-mpq4420agj-aec1","chip_brand-mps"],"acf":{"brief_explanation":"55V, 2A sync buck converter, integrated MOSFETs, 200kHz-2MHz, QFN-10, AEC-Q100","date_code":"","package_case":"QFN-10 (3 x 3 x 0.9 mm)","in_stock":4217,"datasheet":"https:\/\/www.monolithicpower.com\/en\/documentview\/productdocument\/index\/version\/3\/document_type\/Datasheet\/lang\/en\/sku\/MPQ4420A\/document_id\/5015\/","price":"$1.80 @ 1ku","product_introduction":"The MPS MPQ4420AGJ-AEC1 is a 55 V, 2 A synchronous step-down converter with integrated power MOSFETs, designed for automotive and industrial power supply applications. The wide 4 V to 55 V input range accommodates 12 V, 24 V, and 48 V automotive bus systems with margin for load dump transients. The integrated 140 m\u03a9 high-side and 90 m\u03a9 low-side MOSFETs eliminate external switches, reducing component count and solution footprint. The programmable switching frequency (200 kHz to 2 MHz) allows designers to trade off efficiency vs. inductor size. PFM (pulse-frequency modulation) mode reduces quiescent current to 12 \u00b5A at light load, improving battery life in always-on automotive ECUs. External compensation provides flexibility to optimize transient response for different output filter configurations. The QFN-10 (3 x 3 mm) package offers a compact footprint with exposed thermal pad for efficient heat dissipation.","working_principle":"The MPQ4420AGJ-AEC1 uses a current-mode control architecture for the synchronous buck converter. The high-side MOSFET (140 m\u03a9) connects the input voltage to the inductor during the on-time, while the low-side MOSFET (90 m\u03a9) provides a recirculation path during the off-time, replacing the conventional Schottky diode for higher efficiency. Current-mode control senses the inductor current through the high-side MOSFET RDS(on) (lossless sensing), providing cycle-by-cycle current limiting and improved loop stability compared to voltage-mode control. The error amplifier compares the output voltage (via an external resistor divider) with the 0.8 V internal reference and adjusts the duty cycle accordingly. External compensation (a Type-II RC network on the COMP pin) sets the crossover frequency and phase margin. At light loads, PFM mode skips pulses to maintain regulation with minimal switching losses, reducing the effective switching frequency and quiescent current to 12 \u00b5A. Protection features include cycle-by-cycle overcurrent protection (OCP), short-circuit protection (SCP), undervoltage lockout (UVLO), and over-temperature shutdown (OTP).","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BST<\/td>Power<\/td>Bootstrap capacitor for HS gate drive<\/td><\/tr>
      2<\/td>VIN<\/td>Input<\/td>Input supply voltage (4-55V)<\/td><\/tr>
      3<\/td>SW<\/td>Output<\/td>Switching node (inductor connection)<\/td><\/tr>
      4<\/td>PGND<\/td>Ground<\/td>Power ground<\/td><\/tr>
      5<\/td>AGND<\/td>Ground<\/td>Analog ground<\/td><\/tr>
      6<\/td>FB<\/td>Input<\/td>Output voltage feedback (0.8V reference)<\/td><\/tr>
      7<\/td>COMP<\/td>I\/O<\/td>Error amplifier output (compensation)<\/td><\/tr>
      8<\/td>EN<\/td>Input<\/td>Enable (high=on, internal pull-up)<\/td><\/tr>
      9<\/td>FREQ<\/td>Input<\/td>Frequency setting resistor or sync input<\/td><\/tr>
      10<\/td>PG<\/td>Output<\/td>Power-good indicator (open-drain)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive 12V\/24V to 5V\/3.3V ECU power supply<\/li>
      • 48V mild-hybrid to point-of-load conversion<\/li>
      • Industrial distributed power bus DC-DC conversion<\/li>
      • ADAS and infotainment system core voltage regulation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM5164PDDAR<\/td>SOT-563-8<\/td>65V, 0.5A buck, similar input range<\/td><\/tr>
        Analog Devices<\/td>LT8631IUD#PBF<\/td>QFN-20<\/td>100V, 2A, higher voltage<\/td><\/tr>
        MPS<\/td>MPQ4462GU-AEC1<\/td>QFN-12<\/td>55V, 3.5A, higher current version<\/td><\/tr>
        Richtek<\/td>RT6207GQW<\/td>WDFN-10<\/td>60V, 2A synchronous buck<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9118","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=9118"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9118\/revisions"}],"predecessor-version":[{"id":9139,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9118\/revisions\/9139"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9118"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}