New from Holt Integrated Circuits Inc - Programmable 16-Channel Low-Side Driver with Built-In Protection and Load-Current Sensing

Compact high-reliability 16-channel low-side driver designed to meet the rigorous demands of avionic and defence applications.

Holt Integrated Circuits recently announced the introduction of the HI-84216, a smart 16-channel low-side driver designed for high-reliability avionics applications. The device uses a Serial Peripheral Interface (SPI) for intelligent switch control, monitoring and advanced diagnostics. The HI-84216 is capable of sinking 250mA per channel with up to 4A total sink current for parallel channel operation. 

The HI-84216 includes numerous protection features such as a thermal fail-safe mechanism and overcurrent shutdown on a per-channel basis with flexible retry options. The device measures the global die temperature and output current of each channel using an integrated 8-bit A/D converter.

Both high and low current threshold limits may be programmed for over-current and open load detection respectively and both hardware and software interrupts can be enabled on a per-channel basis to allow monitoring of individual load-current status.

HI-84216 product highlights:

The integrated 8-bit A/D converter provides accurate measurement of channel current and temperature which are stored in registers as 8-bit binary words and may be read via host-initiated SPI opcodes. A fully programmable internal PWM clock generator can operate on a per channel basis across a frequency range of 24 Hz to 48 kHz, with 16-bit resolution pulse width and period.

HI-84216 16-channel low-side driver applications:

Anthony Murray |Director of Marketing Communications at Holt Integrated Circuits.

The HI-84216 is available in a compact 6mm x 6mm, 48-pin plastic QFN package and comes in industrial (−40oC to +85oC) and extended (−55oC to +125oC) temperature ranges with optional burn-in at the higher temperature.

Further technical can be requested by speaking to our high-reliability components team member. Holt draws from a long history and technical expertise in military and aerospace quality and high reliability.

New Holt ADK-84216 Development Kit for HI-84216 Programmable 16-Channel Low-Side Driver

The new ADK-84216 is a development kit designed to demonstrate the features of Holt’s recently announced programmable 16-channel low-side driver, HI-84216. 

The kit consists of a 2-board assembly, comprising a lower MCU board with ARM Cortex M3 16-/32-bit microprocessor and debug interface, and an upper HI-84216 daughtercard to demonstrate the key features of the device.

The project source code is included and easily customised to provide a starting point for customer application software development, shortening design cycles, reducing risk and decreasing time to market. 

Key Features:

• Serial Peripheral Interface (SPI) for intelligent switch control, monitoring and advanced diagnostics
• 250mA per channel sinking capability
• 4A total sink current for parallel channel operation
• 8-bit ADC provides accurate measurement of channel current and temperature
• Internal PWM clock generator with 16-bit resolution
• External PWM clock option. PWM waveform generation

Available With Expert Insight and Support From
Official Holt Integrated Circuits Distributor

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