概要

説明

The ISL6625A is a high frequency MOSFET driver designed to drive upper and lower power N-Channel MOSFETs in a synchronous rectified buck converter topology. In ISL6625A, the upper and lower gates are both driven to an externally applied voltage. This provides the capability to optimize applications involving trade-offs between gate charge and conduction losses. An advanced adaptive shoot-through protection is integrated to prevent both the upper and lower MOSFETs from conducting simultaneously and to minimize dead time. The ISL6625A has a 10kΩ integrated high-side gate-to-source resistor to prevent self turn-on due to high input bus dV/dt. This driver also has an overvoltage protection feature, which is operational while VCC is below the POR threshold. The PHASE node is connected to the gate of the low-side MOSFET (LGATE) via a 30kΩ resistor, limiting the output voltage of the converter close to the gate threshold of the low-side MOSFET. This is dependent on the current being shunted, which provides some protection to the load should the upper MOSFET(s) become shorted.

特長

  • Dual MOSFET drives for synchronous rectified bridge
  • Advanced adaptive zero shoot-through protection
  • PHASE detection
  • LGATE detection
  • Auto-Zero of rDS(ON) conduction offset effect
  • Low standby bias current
  • 36V internal bootstrap switcher
  • Bootstrap capacitor overcharging prevention
  • Integrated high-side gate-to-source resistor to prevent from self turn-on due to high input bus dV/dt
  • Pre-POR overvoltage protection for start-up and shutdown
  • Power rails undervoltage protection
  • Expandable bottom copper pad for enhanced heat sinking
  • Dual flat no-lead (DFN) package
  • Near chip-scale package footprint; improves PCB efficiency and thinner in profile
  • Pb-Free (RoHS compliant)

製品比較

アプリケーション

アプリケーション

  • High light load efficiency voltage regulators
  • Core regulators for advanced microprocessors
  • High current DC/DC converters

ドキュメント

分類 タイトル 日付
データシート PDF 624 KB
その他資料 PDF 293 KB
製品変更通知 PDF 243 KB
製品変更通知 PDF 183 KB
製品変更通知 PDF 173 KB
アプリケーションノート PDF 509 KB
アプリケーションノート PDF 397 KB
アプリケーションノート PDF 576 KB
その他資料 PDF 562 KB
9 items

設計・開発

モデル