The L6384ED from STMicroelectronics is a high-voltage gate driver IC designed for half-bridge configurations. It features an integrated bootstrap diode, 600V maximum voltage rating, and 400 mA\/650 mA source\/sink output current in an SO-8 package. The device drives N-channel MOSFETs or IGBTs in motor drive, SMPS, and lighting applications.<\/p>\n
Product Overview The L6384ED from STMicroelectronics is a high-voltage gate driver IC designed for half-bridge configurations. It features an integrated bootstrap diode, 600V maximum voltage rating, and 400 mA\/650 mA source\/sink output current in an SO-8 package. The device drives N-channel MOSFETs or IGBTs in motor drive, SMPS, and lighting applications. Key Specifications High-Side Voltage: […]<\/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":[36,13],"tags":[],"chip_brand":[142],"class_list":["post-6501","post","type-post","status-publish","format-standard","hentry","category-gate-driver-ics","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"600V half-bridge gate driver, integrated bootstrap diode, 400\/650mA, interlocking, SO-8","date_code":"","package_case":"SO-8 (narrow)","in_stock":7300,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/l6384e.pdf","price":"$0.95","product_introduction":"The L6384ED from STMicroelectronics is a high-voltage half-bridge gate driver designed to drive N-channel MOSFETs or IGBTs in half-bridge power conversion topologies. A key feature is the integrated bootstrap diode that eliminates the need for an external fast-recovery diode, reducing component count and board space. The device supports high-side floating supply voltages up to 600V, making it suitable for offline power conversion and motor drive applications. The interlocking function prevents the high-side and low-side outputs from being simultaneously active, protecting the power stage from shoot-through current. The UVLO protection on both outputs ensures that the driver outputs are disabled until the supply voltage reaches the minimum threshold.","working_principle":"The L6384ED provides level-shifted gate drive for the high-side MOSFET\/IGBT using a bootstrap technique. The integrated bootstrap diode charges the bootstrap capacitor (CBOOT) from VCC through the diode when the low-side switch is on (HVG output is low). When the high-side driver needs to turn on, the charge stored in CBOOT provides the floating supply for the high-side driver circuit, referenced to the OUT pin (switch node). The level-shifting circuit translates the logic-level input (HIN) to the high-side driver referenced to the floating supply. The interlocking logic ensures that when HIN and LIN are both high, only one output activates, preventing cross-conduction. The UVLO circuits on both the VCC and CBOOT supplies prevent driving the MOSFETs with insufficient gate voltage, which would cause excessive conduction losses.","pin_description":"
| Pin<\/th> | Name<\/th> | Function<\/th><\/tr> | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | LVG<\/td> | Low-side gate drive output<\/td><\/tr> | ||||||||||||
| 2<\/td> | OUT<\/td> | High-side reference (switch node connection)<\/td><\/tr> | ||||||||||||
| 3<\/td> | HVG<\/td> | High-side gate drive output<\/td><\/tr> | ||||||||||||
| 4<\/td> | VBOOT<\/td> | Bootstrap supply (connect bootstrap cap)<\/td><\/tr> | ||||||||||||
| 5<\/td> | VCC<\/td> | Logic and low-side supply (10-17V)<\/td><\/tr> | ||||||||||||
| 6<\/td> | SD<\/td> | Shutdown (active low, pull high for normal)<\/td><\/tr> | ||||||||||||
| 7<\/td> | HIN<\/td> | High-side input (CMOS\/TTL compatible)<\/td><\/tr> | ||||||||||||
| 8<\/td> | LIN<\/td> | Low-side input (CMOS\/TTL compatible)<\/td><\/tr><\/table>","application_scenarios":"The L6384ED is widely used in half-bridge motor drive applications where its integrated bootstrap diode simplifies the PCB layout and reduces component count. In offline switch-mode power supplies, the 600V rating provides sufficient margin for rectified mains operation. For LED lighting ballasts, the interlocking function and UVLO protection ensure reliable operation in the demanding environment of AC-DC power conversion. Solar micro-inverters benefit from the compact SO-8 package and minimal external component count, enabling high power density designs. The shutdown pin provides a convenient hardware disable for fault protection systems.","alternative_models":"
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