Rad Hard 32-channel driver has integrated decoder for satellite applications

March 01, 2017 // By Julien Happich
The ISL72813SEH from Intersil is a radiation hardened 32-channel driver with integrated decoder that reduces the size, weight and power of satellite command and telemetry systems.

The ISL72813SEH is the industry’s first high current driver to integrate the decoder, level shifter and driver array in a single monolithic IC, allowing satellite manufacturers to significantly increase system capacity and reduce solution size by up to 50%. The device offers a 4x higher density channel count compared to the nearest competitor, claims the company, and the integrated level shifter eliminates several peripheral components.
The driver’s integrated decoder interfaces directly to the general purpose I/Os of FPGAs and CPUs in the satellite’s flight computer, dramatically reducing pin count compared to competitive 1-input to 1-output driver arrays. Each of the device’s 32-channels of common-emitter open-collector driver outputs can generate pulses of up to 42V and 600mA. The ISL72813SEH addresses latching relay and solenoid commanding for most satellite control functions, including redundancy management, mechanism drive enables, propulsion component relays and enables, battery management, and payload switch control. The ISL72813SEH’s low VCE saturation levels eliminate a major customer concern by reducing the overhead voltage required to drive the load. The driver’s power efficiency and high integration reduces the amount of circuitry required on the bus, allowing customers to add more spacecraft functionality and processing power.

Acceptance tested to 50krad(Si) LDR, wafer-by-wafer, the chips operates in the extended operating temperature range of -55°C to +125°C, it comes in a 44-lead ceramic lead-less chip carrier (CLCC) package.

Visit Intersil at www.intersil.com