Product category:
Power Supply ICs and Controllers
News Release from: STMicroelectronics | Subject: L5961 power management IC
Edited by the Electronicstalk Editorial
Team on 10 March 2008
Power management IC manages car
accessories
MOST technology allows a range of multimedia devices, such as CD or DVD players, car radios and personal navigation devices, to be added to a car with minimal effort.
STMicroelectronics has released an integrated power-management solution for MOST (media oriented systems transport) networks Optimised for in car multimedia and infotainment applications, the MOST network was originally developed for the automotive industry, but also has a wide range of applications in many other industries
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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MOST technology allows a range of multimedia devices, such as CD or DVD players, car radios and personal navigation devices, to be added to a car with minimal effort.
The new L5961 power management IC, which has been designed in co-operation with SMSC to work with that company's MOST network processors.
It includes both the power supply and MOST-compliant power management control logic, together with enhanced diagnostic and full system monitoring.
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A chipset combining the L5961 power management IC and SMSC network processor can serve as a building block in any MOST network node and provides significantly more independence from the individual applications that are connected to the network, in terms of turn-on/off timing and device failure, for example.
The combined chipset, once validated, can be placed in any MOST application without having to be redesigned and revalidated each time.
The current solution in the industry uses discrete components to implement the power management for MOST network nodes.
ST's integration of both the power management control logic and power supply within the L5961 therefore provides several key advantages for automotive OEMs, including significant PCB space savings, lower cost, lower cost of ownership and lower stand-by-mode power consumption, helping to meet specifications recently issued by many car manufacturers.
In particular, the device features multiple power modes, including an Ultra-Zero power mode that offers a typical quiescent current of only 5uA.
The overall offering is a cost and space-optimised solution that provides considerable advantages in terms of reproducibility and fail-safe behaviour of the application.
The L5961also offers an integrated 5 or 3.3V, 650mA DC/DC convertor, which supplies the network processor and can also supply power to an external low-voltage application.
Two voltage regulators supply power to the fibre-optic transmitter and fibre-optic receiver.
A diagnostic transceiver is included for the network physical layer and three battery detectors are integrated for voltage monitoring.
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