{"id":9169,"date":"2026-07-02T12:01:49","date_gmt":"2026-07-02T12:01:49","guid":{"rendered":"https:\/\/materialparts.com\/mpq4312gre-aec1-z\/"},"modified":"2026-07-02T12:01:49","modified_gmt":"2026-07-02T12:01:49","slug":"mpq4312gre-aec1-z","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mpq4312gre-aec1-z\/","title":{"rendered":"MPQ4312GRE-AEC1-Z"},"content":{"rendered":"

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

The MPQ4312GRE-AEC1-Z is a Monolithic Power Systems (MPS) AEC-Q100 qualified 45V, 2A synchronous step-down converter with ultra-low quiescent current and frequency spread spectrum. It operates from 4.2V to 45V input, making it ideal for automotive 12V\/24V bus systems with load-dump protection requirements.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4.2V to 45V<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n2A<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n200kHz to 2.2MHz (adjustable)<\/td>\n<\/tr>\n
Spread Spectrum<\/td>\nFrequency dithering at 450kHz<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\nLow IQ in PFM mode<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u8d44\u683c<\/td>\nAEC-Q100<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q100 qualified for automotive applications<\/li>\n
  • Wide 4.2V to 45V input range (load-dump tolerant)<\/li>\n
  • Frequency spread spectrum for EMI reduction<\/li>\n
  • Ultra-low quiescent current in PFM mode<\/li>\n
  • Synchronous rectification for high efficiency<\/li>\n
  • External frequency synchronization<\/li>\n
  • Adjustable output voltage from 0.8V<\/li>\n
  • OCP, OVP, UVLO, and thermal shutdown protection<\/li>\n
  • LDO mode for low dropout operation<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive ECU power supplies<\/li>\n
    • 12V\/24V bus to low-voltage conversion<\/li>\n
    • ADAS sensor module power<\/li>\n
    • Industrial 24V distributed power<\/li>\n
    • Automotive infotainment systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MPQ4312GRE-AEC1-Z is a Monolithic Power Systems (MPS) AEC-Q100 qualified 45V, 2A synchronous step-down converter with ultra-low quiescent current and frequency spread spectrum. It operates from 4.2V to 45V input, making it ideal for automotive 12V\/24V bus systems with load-dump protection requirements. Key Specifications Input Voltage Range 4.2V to 45V Output Current 2A […]<\/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":[172],"class_list":["post-9169","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-mps"],"acf":{"brief_explanation":"AEC-Q100 45V 2A synchronous buck, spread spectrum, low IQ, SOIC-8 EP","date_code":"","package_case":"SOIC-8 EP (5.0 x 4.0 x 1.0 mm)","in_stock":7830,"datasheet":"https:\/\/www.monolithicpower.com\/en\/mpq4312-aec1.html","price":"$1.35 @ 1ku","product_introduction":"The MPQ4312GRE-AEC1-Z is an MPS AEC-Q100 qualified 45V, 2A synchronous step-down converter with frequency spread spectrum for EMI reduction. Operating from 4.2V to 45V, it provides load-dump protection for automotive 12V\/24V bus systems. The spread spectrum function dithers the switching frequency to reduce peak EMI emissions. Ultra-low quiescent current in PFM mode, external frequency sync, LDO mode for low dropout, and comprehensive protection make it ideal for automotive ECU, ADAS, and industrial 24V power applications.","working_principle":"The MPQ4312GRE-AEC1-Z operates as a peak current mode synchronous buck converter. The integrated high-side and low-side MOSFETs switch at 200kHz-2.2MHz to step down the input voltage. In PFM mode at light loads, the switching frequency reduces automatically to maintain efficiency. The spread spectrum function modulates the switching frequency around the center frequency (typically \u00b15-10% dithering at a low frequency rate), spreading the switching harmonic energy across a wider bandwidth and reducing peak EMI readings. The SYNC pin allows external clock synchronization for multi-converter systems. LDO mode increases the maximum duty cycle to maintain output regulation even when VIN approaches VOUT. Cycle-by-cycle current limiting, output OVP, input UVLO, and thermal shutdown provide comprehensive fault protection.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>BST<\/td>Bootstrap capacitor<\/td><\/tr>
      2<\/td>VIN<\/td>Input supply (4.2-45V)<\/td><\/tr>
      3<\/td>EN\/SYNC<\/td>Enable \/ frequency sync input<\/td><\/tr>
      4<\/td>FB<\/td>Feedback voltage input<\/td><\/tr>
      5<\/td>COMP<\/td>Loop compensation<\/td><\/tr>
      6<\/td>PGOOD<\/td>Power good output<\/td><\/tr>
      7<\/td>GND<\/td>Ground<\/td><\/tr>
      8<\/td>SW<\/td>Switch node output<\/td><\/tr>
      EP<\/td>PGND<\/td>Exposed pad (power ground)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive ECU 12V\/24V to 3.3V\/5V power with 45V load-dump protection<\/li>\n
      • ADAS radar module power supply with spread spectrum EMI compliance<\/li>\n
      • Industrial 24V bus to low-voltage conversion with PFM light-load efficiency<\/li>\n
      • Automotive infotainment 12V to 5V regulator with external sync capability<\/li>\n
      • Multiple converter system with frequency synchronization to avoid beat noise<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MPQ4572GRE-AEC1<\/td>MPS<\/td>60V, 2A, higher voltage rating<\/td><\/tr>
        LM61460<\/td>TI<\/td>36V, 6A, AEC-Q100 buck<\/td><\/tr>
        MAX20004<\/td>ADI<\/td>36V, 4A AEC-Q100 buck<\/td><\/tr>
        TPS5450<\/td>TI<\/td>36V, 3A, non-automotive<\/td><\/tr>
        LMR36015<\/td>TI<\/td>60V, 1.5A, AEC-Q100<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9169","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=9169"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9169\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9169"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}