Design Files
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Multifunctional Ignition and Injector Driver
The NXP® MC33812 is an engine control analog power IC intended for motorcycle and other single/dual cylinder small engine control applications.
- Consists of three integrated low side drivers, one pre-driver, a +5.0 V, voltage pre-regulator, an MCU watchdog circuit, an ISO 9141 K-Line interface, and a parallel interface for MCU communication
- The three low side drivers are provided for driving a fuel injector, a lamp or LED, and a relay or other load
- The pre-driver is intended to drive either an Insulated Gate Bipolar Transistor (IGBT) or a bipolar Darlington transistor to control an ignition coil
Product Details
Block Diagram
Features
Key Features
- Designed to operate over the range of ~4.7 V ≤ VPWR ≤ 36 V
- Fuel Injector driver - Current Limit - 4.0 A Typical
- Ignition pre-driver can drive IGBT or Darlington bipolar junction transistors
- Ignition pre-driver has independent high and low side outputs
- Relay driver - Current Limit - 4.0 A Typical
- Lamp driver- Current Limit - 1.5 A Typical
- All external outputs protected against short to battery, over-current
- Ignition and other drivers protected against over-temperature
- Interfaces directly to MCU using 5.0 V parallel interface
- VCC voltage pre-regulator provides +5.0 V power for the MCU
- MCU Power On RESET generator
- MCU watchdog timer circuit with parallel refresh/time setting line
- Independent fault annunciation outputs for ignition and injection
- ISO-9141 K-Line transceiver for communicating diagnostic messages
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Documentation
Quick reference to our documentation types.
1-5 of 7 documents
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Data Sheet
Multifunctional Ignition and Injector DriverFeatured
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Application Note
AN3670, Implementing a DSI Network Using the MC33781 and the MC33784
Design Resources
Hardware
Quick reference to our
board types.
3 hardware offerings
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Evaluation and Development BoardsEvaluation Kit - USB-SPI Interface, MC68HC908JW32, DongleFeatured
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Evaluation and Development BoardsEvaluation Kit - 33812, Ignition and Injector DriverFeatured
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Reference DesignS12P and MC33812 Small Engine Control Reference Design
Software
Quick reference to our software types.
1 software file
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Configuration Tools
SPI Generator (SPIGen) Software
Note: For better experience, software downloads are recommended on desktop.
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
Hardware Design Services
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Independent Design House (IDH)
Embedded Software Design
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