Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: AMI Semiconductor | Subject: AMIS-39100
Edited by the Electronicstalk Editorial
Team on 26 July 2006
Simplified control of automotive loads
Miniature ASSP integrates eight drivers, protection, microcontroller interface, charge pump and diagnostics into single SO28
AMI Semiconductor (AMIS) has expanded its family of ASSPs (application specific standard products) with a new high-side driver IC that will simplify the control of transistor gates, relays, valves, solenoids, LEDs and other loads in 12V automotive environments Supplied in a compact SO28 package, the AMIS-39100 is a highly integrated driver IC, with eight high side (HS) output drivers and a range of functions and features designed to significantly reduce component count and cost
This article was originally published on Electronicstalk on 26 Mar 2001 at 8.00am (UK)
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Built-in functionality includes a serial-to-parallel interface (SPI) for direct connection to a microcontroller, an integrated diagnostic circuit, a charge pump, and short circuit and thermal overload protection.
Each of the eight output drivers can drive a continuous current of 275mA when connected to an inductive load of 300mH.
Higher individual output currents are possible by limiting device current to the total maximum.
The drivers will withstand short circuits to the battery or to ground, respectively, even in situations where the device itself has lost its ground connection.
The drivers also provide over-current limiting and in the case of a fault condition are switched off.
Furthermore, the integrated charge pump and over-temperature protection circuitry avoid the possibility of thermal runaway, even at low battery voltages.
Compatible with 3.3V and 5V microcontrollers, the SPI interface is used to control each of the individual output drivers and to provide a route for the integrated diagnostic circuit to feedback error signals.
The interface can also be used to read back the status of the built-in thermal shutdown protection function.
The AMIS-39100 ASSP incorporates a power down mode to reduce power consumption during non-active periods and uses an integrated slope control function that ensures low electromagnetic emission (EME).
Operating temperature is rated at -40C and 105C.
"Automotive designers are demanding actuator and controller solutions that help them simplify and speed application development," says Tony Denayer, AMI Semiconductor's senior vice president, high voltage communications and ASSPs.
"The high levels of integration that the AMIS-39100 offers addresses this demand, and complements our existing range of standard components for driving and controlling motors and loads in automotive applications".
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