Date: 26th May 2011
LIN controlled automotive alternator regulator
from Freescale
Freescale Semiconductor has expanded its alternator regulator
portfolio with the new TC80310, a single-chip alternator
regulator integrated circuit (IC) that integrates local
interconnect network (LIN) to provide increased control
for automotive alternators.
Freescale says with a single-wire LIN connection to the
vehicle's engine control unit (ECU), the ECU can control
energy management modes and contribute to energy savings,
which is particularly important as regional CO2 targets
are established. Designed to provide the alternator voltage
regulator function with limited use of additional components,
the TC80310 system-on-a-chip also optimizes the alternator
charging system phase, according to Freescale.
Developed in conjunction with automotive alternator manufacturers,
the TC80310 uses Freescale's versatile SMARTMOS mixed-signal
processing technology that combines analog, digital and
power circuitry. Twenty one-time programmable memory functions
supports reduced energy consumption.
"The LIN-controlled alternator regulator's design
satisfies automotive requirements for standard components
while providing our customers custom design functionality,"
said Gavin Woods, vice president and general manager of
Freescale's Analog, Mixed-Signal & Power Division. "With
this single programmable chip, a charging system designer
can select the parameters that provide the greatest efficiency
improvements in the application."
The key features include:
1. Default regulation voltage from 10.6V up to 16V
uses to control the battery regulation voltage and battery
life.
2. The charging system achieves faster response time once
the load response control (LRC) disable frequency
is achieved.
3. LRC eliminates engine speed hunting and vibration
resulting from sudden increases in electrical loads
that cause abrupt torque loading of the engine at low RPM.
4. LIN commands vary the LRC rate and disable frequency
for optimum performance.
Additional TC80310 features:
Integrated high side excitation driver (field);
Internal free wheeling diode;
Rotor excitation coil up to 8.0A;
Thermal protection;
Thermal compensation to avoid thermal runaway;
LIN 1.3 interface;
Rotor control and die temperature monitoring via LIN communication;
Self-start operation available in case of LIN disconnection;
Multiple adjustments capability for loop regulation.
Pricing and Availability:
TC80310 device and wafer samples are available now. The
TC80310 devices are supported by comprehensive design tools,
including evaluation boards, graphic user interfaces and
software upon request. Devices are one-time programmable
and available in die only.
For more information about Freescale's automotive portfolio,
visit www.freescale.com
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