Engine Management

E525.07 | Glow Plug Control IC


E525.07 is a control IC for up to 4 high-side power-NMOS typically driving glow plugs in Diesel engines. The load current is varied by PWM duty cycle modulation at the power- NMOS gates according to the requirements determined by an engine management unit. Advanced control and diagnosis features such as load current monitoring, battery-, supply-, and charge pump- voltage and temperature supervision are included. The load current is measured via the drain-source voltage drop at the power- NMOS transistors. Ground voltage sensing at the glow plugs to compensate for ground shifts is included also. For communication with the engine control unit either a 2-wire PWM interface which can be operated in two modes (Standard or Advanced) is used, or a SPI communication interface for a micro processor is available.


  • 4 gate drivers for external hi-side power-NMOS
  • PWM controlled gate output with integrated charge pump
  • Adjustable gate charge / discharge currents
  • Gate sequencing for minimum current ripple
  • MOS protection by gate-source voltage limitation
  • Glow plug current sense with over-current shut-off
  • Battery measurement, over-voltage and undervoltage, shut-down, charge pump monitoring


  • Quick start Diesel engine controls for Euro6
  • Ceramic glow plugs
  • Steel glow plugs
  • For direct and indirect injection

Ordering Information

  • Samples
    Part No.Temp. RangePackageOrder No.
    E525.07-40°C to +125°CQFN32L6E52506A77B


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Application Diagram

Glow Plug Control IC