LM5113-Q1 Automotive 1.2-A/5-A, 100-V half bridge gate driver for GaNFET | TI.com

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Automotive 1.2-A/5-A, 100-V half bridge gate driver for GaNFET



The LM5113-Q1 is designed to drive both the high-side and the low-side enhancement mode Gallium Nitride (GaN) FETs or silicon MOSFETs in a synchronous buck, boost, or half bridge configuration for automotive applications. The device has an integrated 100-V bootstrap diode and independent inputs for the high-side and low-side outputs for maximum control flexibility. The high-side bias voltage is internally clamped at 5.2 V, which prevents the gate voltage from exceeding the maximum gate-source voltage rating of enhancement mode GaN FETs. The inputs of the device are TTL-logic compatible, which can withstand input voltages up to 14 V regardless of the VDD voltage. The LM5113-Q1 has split-gate outputs, providing flexibility to adjust the turnon and turnoff strength independently.

In addition, the strong sink capability of the LM5113-Q1 maintains the gate in the low state, preventing unintended turnon during switching. The LM5113-Q1 can operate up to several MHz. The LM5113-Q1 is available in a standard 10-pin WSON package with an exposed pad to aid power dissipation.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 1C
    • Device CDM ESD Classification Level C6
  • Independent High-Side and Low-Side
    TTL Logic Inputs
  • 1.2-A Peak Source, 5-A Peak Sink Output Current
  • High-Side Floating Bias Voltage Rail
    Operates up to 100-VDC
  • Internal Bootstrap Supply Voltage Clamping
  • Split Outputs for Adjustable
    Turnon and Turnoff Strength
  • 0.6-Ω Pulldown, 2.1-Ω Pullup Resistance
  • Fast Propagation Times (28 ns Typical)
  • Excellent Propagation Delay Matching
    (1.5 ns Typical)
  • Supply Rail Undervoltage Lockout
  • Low Power Consumption

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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
LM5113-Q1 Order now 2     MOSFET
100     5     4.5     5.5     7     3.5     30     150     TTL     TTL     -5     Bootstrap supply voltage clamping
Split outputs on high and low side    
Automotive     -40 to 125     WSON | 10    
LMG1020 Order now 1     MOSFET
  7     4.75     5.25     0.4     0.4     2.5       TTL     Inverting
  low-side, ultra-fast     Catalog     -40 to 125     DSBGA | 6    
LMG1205 Order now 2     MOSFET
  5     4.5     5.5     7     3.5     35     90     TTL     TTL     -5     Bootstrap supply voltage clamping
Split outputs on high and low side    
Catalog     -40 to 125     DSBGA | 12    
LMG1210 Order now 2     MOSFET
300     3     6     18     0.5     0.5     10     300     TTL     TTL/PWM       Resistor-controllable deadtime
Internal LDO
Bootstrap supply voltage clamp    
Catalog     -40 to 125     WQFN | 19