February 28, 2017 – Intersil Corporation, a provider of power management and precision analog solutions, introduced a radiation hardened 32-channel driver with integrated decoder that reduces the size, weight and power (SWaP) of satellite command and telemetry systems. The ISL72813SEH is the a high current driver designed to integrate the decoder, level shifter and driver array in a single monolithic IC.
The ISL72813SEH driver leverages Intersil’s silicon on insulator process, which provides single-event latch-up (SEL) robustness in heavy ion environments. The driver’s integrated decoder interfaces directly to the general purpose I/Os of FPGAs and CPUs in the satellite’s flight computer, reducing pin count. 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 VCE saturation levels reduce the overhead voltage required to drive the load.
The driver’s power efficiency and integration reduces the amount of circuitry required on the bus, allowing customers to add more spacecraft functionality and processing power.
Features and Specifications of ISL72813SEH
- Acceptance tested to 50krad(Si) LDR, wafer-by-wafer
- Integrated 5-bit to 32-channel decoder and level shifting circuit
- Collector current outputs to 600mA
- VCE saturation of 1.5V with IC of 530mA
- Voltage outputs up to -40V
- VCC supply range of 3V to 5.5V
- Operating temperature range of -55°C to +125°C
- HDR radiation tolerance of 100krad(Si) and LDR of 50krad(Si)
- SEB LETTH (VCE = 33V) immune up to 86.4MeV•cm2/mg
The ISL72813SEH high current driver is available now in a 44-lead ceramic lead-less chip carrier (CLCC) package. An evaluation board is available to evaluate device features and performance. SEE and total dose testing reports also are available.
