LM5105 100V Half Bridge Gate Driver with Programmable Dead-Time | TI.com

LM5105 (ACTIVE) 100V Half Bridge Gate Driver with Programmable Dead-Time

 

Recommended alternative parts

  • LM5100A  -  3A Half Bridge Driver CMOS-Type Threshold Inputs
  • LM5101A  -  3A Half Bridge Driver TTL-Type Threshold Inputs
  • LM5102  -  Independently Programmable Delay (Rising Edge)
  • LM5104  -  Single PWM Input, Has Adaptive Deadtime With Programmable Delay

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.

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)

Parametrics

Compare all products in Half-bridge drivers Email Download to Excel
Part number Order Number of channels (#) Power switch Bus voltage (Max) (V) Peak output current (A) Input VCC (Min) (V) Input VCC (Max) (V) Rise time (ns) Fall time (ns) Prop delay (ns) Iq (uA) Input threshold Channel input logic Negative voltage handling at HS pin (V) Features Rating Operating temperature range (C) Package Group
LM5105 Order now 2     MOSFET     100     1.8     8     14     10     10     26     10     TTL     TTL     -1         Catalog     -40 to 125     WSON | 10    
LM5100A Order now 2     MOSFET     100     3     9     14     10     10     25     10     CMOS     CMOS     -1         Catalog     -40 to 125     SO PowerPAD | 8
SOIC | 8
WSON | 10    
LM5101A Order now 2     MOSFET     100     3     9     14     10     10     25     10     TTL     TTL     -1         Catalog     -40 to 125     SO PowerPAD | 8
SOIC | 8
WSON | 10
WSON | 8    
LM5102 Order now 2     MOSFET     100     2     9     14     10     10     35     10     TTL     TTL     -1         Catalog     -40 to 125     VSSOP | 10
WSON | 10    
LM5104 Order now 2     MOSFET     100     2     9     14     10     10     35     10     TTL     TTL     -1         Catalog