LM5105

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5105 SNVS349E – FEBRUARY 2005 – REVISED AUGUST 2016 LM5105 100-V Half-Bridge Gate Driver With Programmable Dead Time 1 Features 1 Drives Both a High-Side and Low-Side N-Channel MOSFET 1.8-A Peak Gate Drive Current Bootstrap Supply Voltage Range up to 118-V DC Integrated Bootstrap Diode Single TTL Compatible Input Programmable Turnon Delays (Dead Time) Enable Input Pin Fast Turnoff Propagation Delays (26 ns Typical) Drives 1000 pF With 15-ns Rise and Fall Time Supply Rail Undervoltage Lockout Low Power Consumption Package: Thermally Enhanced 10-Pin WSON (4 mm × 4 mm) 2 Applications Solid-State Motor Drives Half- and Full-Bridge Power Converters 3 Description The LM5105 is a high-voltage gate driver designed to drive both the high-side and low-side N–Channel MOSFETs in a synchronous buck or half-bridge configuration. The floating high-side driver is capable of working with rail voltages up to 100 V. The single control input is compatible with TTL signal levels and a single external resistor programs the switching transition dead time through tightly matched turnon delay circuits. A high-voltage diode is provided to charge the high-side gate-drive bootstrap capacitor. The robust level shift technology operates at high speed while consuming low power and provides clean output transitions. Undervoltage lockout disables the gate driver when either the low-side or...