Press release

Renesas Electronics Launches Rad-Hard 16-Channel Current Driver With Integrated Decoder for Satellite Applications

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Renesas Electronics Corporation (TSE:6723), a premier supplier of
advanced semiconductor solutions, today announced a new
radiation-hardened 16-channel current driver with integrated 4-bit
decoder for reducing the size, weight and power (SWaP) of satellite
command and telemetry systems. The ISL72814SEH integrates the decoder,
input level shifter, and 16 current driver arrays in a single monolithic
IC. The device allows satellite manufacturers to significantly increase
system capacity and cut solution footprint by 50 percent for their
medium Earth orbit (MEO), geosynchronous Earth orbit (GEO), highly
elliptical orbit (HEO), and deep space mission profiles.

Multiple ISL72814SEH current drivers are able to send 28V/500mA pulses
for 750ms to the more than 1,500 RF switches in a communication
satellite’s payload, routing RF signals to the designated Internet radio
stations and television channels. They also send 12V-30V with 50mA-600mA
latching pulses to control the relays and solenoids that turn on/off the
propulsion system thrusters, change orbital altitude, and turn on the
motor to tilt the solar panels. The ISL72814SEH offers twice the channel
count and 54 percent less VCE(SAT) power dissipation on each
channel compared to competitive drivers. Its integrated level shifter
removes several peripheral components, and its internal clamp diodes
eliminate the need for additional protection circuitry when driving
inductive loads.

The ISL72814SEH leverages Renesas’ proprietary silicon on insulator
process to provide single-event effects (SEE) robustness in heavy ion
environments. The driver’s integrated decoder interfaces directly to the
general purpose I/Os of FPGAs and microprocessors in the satellite’s
flight computer, dramatically reducing pin count compared to 1-input to
1-output driver arrays. Each of the ISL72814SEH’s 16-channels of
common-collector open-emitter PNP driver outputs can generate pulses of
up to 42V and 700mA. The device is wafer acceptance tested to
100krad(Si) over high dose rate (HDR), and 75krad(Si) over low dose rate
(LDR) total dose testing. Characterization testing is completed with no
single event latch-up (SEL), single event burnout (SEB), and single
event transients (SETs) at a linear energy transfer (LET) of up to
86MeV*cm2/mg.

“The ISL72814SEH offers satellite customers the ultimate in radiation
immunity, mass and power savings,” said Philip Chesley, Vice President,
Industrial Analog and Power Business Division, Renesas Electronics
Corporation. “Our current driver significantly reduces the circuitry
required on the bus, enabling manufacturers to add more functionality
and processing power to their next generation satellites.”

Key Features of ISL72814SEH 16-Channel Driver Circuit

  • Integrated 4-bit to 16-channel decoder and input level shifter
  • High current outputs up to 700mA
  • High voltage outputs up to 42V
  • VCC supply range of 3V to 13.2V
  • Ultra-low VCE saturation of 1.35V at 500mA
  • Extended operating temperature range of -55°C to +125°C

The ISL72814SEH can be combined with the following ICs to create a
satellite command and telemetry signal processing solution with superior
rad-hard performance: ISL71590SEH
temperature sensor, ISL70591SEH
precision current source, ISL71840SEH
30V 16-channel multiplexer, ISL70517SEH
36V differential input in-amp, ISL70419SEH
precision op amp, ISL71090SEH12
precision voltage reference, and ISL72026BSEH
CAN transceiver.

Availability

The ISL72814SEH radiation-hardened 16-channel current driver is
available now in a 28-lead ceramic flatpack package. An evaluation board
is available to evaluate device features and performance. For more
information, please visit: www.renesas.com/products/ISL72814SEH.

(Note) Renesas branding policy will continue to apply the Intersil brand
for military and aerospace products.

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE:
6723) delivers trusted embedded design innovation with complete
semiconductor solutions that enable billions of connected, intelligent
devices to enhance the way people work and live. A global
leader in microcontrollers, analog, power, and SoC products, Renesas
provides comprehensive solutions for a broad range of automotive,
industrial, home electronics, office automation, and information
communication technology applications that help shape a limitless
future. Learn more at renesas.com.

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