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Product details

Parameters

Bus voltage (Max) (V) 100 Power switch MOSFET Input VCC (Min) (V) 8 Input VCC (Max) (V) 14 Peak output current (A) 1.8 Rise time (ns) 10 Operating temperature range (C) -40 to 125 Undervoltage lockout (Typ) 8 Rating Catalog Number of channels (#) 2 Fall time (ns) 10 Prop delay (ns) 26 Iq (uA) 10 Input threshold TTL Channel input logic TTL Negative voltage handling at HS pin (V) -1 Features open-in-new Find other Half-bridge drivers

Package | Pins | Size

WSON (DPR) 10 16 mm² 4 x 4 open-in-new Find other Half-bridge drivers

Features

  • 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)
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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 the bootstrapped high-side supply voltage is below the operating threshold. The LM5105 is offered in the thermally enhanced WSON plastic package.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet LM5105 100-V Half-Bridge Gate Driver With Programmable Dead Time datasheet (Rev. E) Aug. 25, 2016
Application note External Gate Resistor Selection Guide (Rev. A) Feb. 28, 2020
Application note Understanding Peak IOH and IOL Currents (Rev. A) Feb. 28, 2020
White paper Power Electronics in Motor Drives: Where is it? (Rev. A) Oct. 01, 2019
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) Oct. 29, 2018
Technical articles How to achieve higher system robustness in DC drives, part 3: minimum input pulse Sep. 19, 2018
Technical articles How to achieve higher system robustness in DC drives, part 2: interlock and deadtime May 30, 2018
Technical articles Boosting efficiency for your solar inverter designs May 24, 2018
Technical articles How to achieve higher system robustness in DC drives, part 1: negative voltage Apr. 17, 2018

Design & development

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WSON (DPR) 10 View options

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