Freescale Semiconductor KIT33926PNBEVBE, Руководство пользователя

Страница: 4 / 25

KT33926UG, Rev. 2.0
4 Freescale Semiconductor
Introduction
3 Introduction
The KIT33926PNBEVBE Evaluation Board (EVB) is an easy-to-use circuit board that allows the user to
exercise all the functions of the MC33926 H-Bridge circuit. The EVB communicates to a PC through a
USB/SPI Dongle connected to the PC’s USB port. The Freescale SPIGen program provides the User
Interface to the MC33926 EVB’s SPI port and allows the user to send commands to and receive error
messages from the IC. There is also a MC33810 circuit on the EVB which contains four, low side, drivers
and four General Purpose MOSFET Gate drivers which are used to provide PWM signals to the various
MC33926 inputs.
4 Evaluation Board Features
• A MC33926 H-Bridge IC
• A MC33810 PWM Driver (IID) IC
• A USB to SPI Dongle interface, through which 5V power is supplied
• Power conditioning circuitry
• A set of seven Input Select Jumpers.
5 MC33926 Device Features
This MC33926 is designed primarily for automotive electronic throttle control, but is applicable to any
low-voltage DC servo motor control application within the current and voltage limits stated in this
specification. This device has the following features:
• 8.0 V to 28 V Continuous Operation (Transient Operation from 5.0 V to 40 V)
• 225 m Ω maximum RDS(ON) @ 150°C (each H-Bridge MOSFET)
• 3.0 V and 5.0 V TTL / CMOS Logic Compatible Inputs
• Overcurrent Limiting (Regulation) via Internal Constant-Off-Time PWM
• Output Short Circuit Protection (Short to VPWR or Ground)
• Temperature-Dependant Current-Limit Threshold Reduction
• All Inputs have an Internal Source/Sink to Define the Default (Floating Input) States
• Sleep Mode with Current Draw < 50 µA (with Inputs Floating or Set to Match Default Logic States)
6 MC33810 Device Features
The MC33810 is an eight channel output driver IC intended for automotive engine control applications.
This device has the following features:
• Designed to Operate over the range of 4.5 V ≤ VPWR ≤ 36 V
• Quad Ignition IGBT or MOSFET gate pre-driver with Parallel/SPI and/or PWM Control
• Quad Injector Driver with Parallel/SPI Control
• Interfaces Directly to MCU Using 3.3 V / 5.0 V SPI Protocol
• Injector Driver Current Limit - 4.5A Typical
• Independent Fault Protection and Diagnostics
• VPWR Standby Current 10 µA Typical