High Voltage Half-Bridge Gate Driver with Adaptive Delay - SM74104

SM74104 (ACTIVE)

High Voltage Half-Bridge Gate Driver with Adaptive Delay

Description

The SM74104 High Voltage Gate Driver is designed to drive both the high side and the low side N-Channel MOSFETs in a synchronous buck configuration. The floating high-side driver is capable of working with supply voltages up to 100V. The high side and low side gate drivers are controlled from a single input. Each change in state is controlled in an adaptive manner to prevent shoot-through issues. In addition to the adaptive transition timing, an additional delay time can be added, proportional to an external setting resistor. An integrated high voltage diode is provided to charge the high side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high side gate driver. Under-voltage lockout is provided on both the low side and the high side power rails.

For all available packages, see the orderable addendum at the end of the data sheet.

Features

  • Renewable Energy Grade
  • Drives both a High Side and Low Side N-Channel
    MOSFET
  • Adaptive Rising and Falling Edges with
    Programmable Additional Delay
  • Single Input Control
  • Bootstrap Supply Voltage Range up to 118V DC
  • Fast Turn-Off Propagation Delay (25 ns Typical)
  • Drives 1000 pF Loads with 15 ns Rise and Fall
    Times
  • Supply Rail Under-Voltage Lockout

Typical Applications

  • Current Fed Push-Pull Power Converters
  • High Voltage Buck Regulators
  • Active Clamp Forward Power Converters
  • Half and Full Bridge Converters

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Parametrics Compare all products in Gate Driver

 
Driver Configuration
Peak Output Current (A)
VCC (Min) (V)
VCC (Max) (V)
Rise Time (ns)
Fall Time (ns)
Prop Delay (ns)
Input Threshold
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
SM74104 LM5104
Dual
Single    
Dual
Single    
1.8     2    
9     7.5    
14     14    
15     10    
15     10    
25     35    
TTL     TTL    
Catalog     Catalog    
-40 to 125     -40 to 125    
10WSON
8SOIC    
10WSON
8SOIC    
1.10 | 1ku     1.10 | 1ku    

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