Intersil ISL78226 - industry’s first 6-phase bidirectional PWM controller enables rapid adoption of 48V hybrid powertrains
Intersil’s ISL78226 bidirectional controller is designed to perform buck and boost power conversions between 12V and 48V automotive buses. A single automotive-grade ISL78226 delivers up to 3.75kW at greater than 95% conversion efficiency, and is able to interleave in a modular master/slave architecture to deliver higher power. ISL78226 also features:
- Average phase-to-phase current balancing, and average current output
- Cycle-by-cycle peak current limiting, negative current limiting, and digitally programmable average current limit
- Dual-output flyback controller and 200mA adjustable output linear regulator
The ISL78226EVAL1Z Evaluation Board Evaluation Board is available from Avnet Silica.
Features & benefits
6-phase bidirectional synchronous 12V to 48V controller - Master/slave architecture supports up to 4 ICs in parallel
- Voltage and current regulation
- Phase dropping facilitated with companion FET driver
- Supply and clock redundancy for functional safety
- Digitally programmable average current limit
- Analog/digital control of output voltage
- PMBus for status monitoring and fault response control
- Selectable phase dropping and diode emulation for light-load efficiency improvement
- Comprehensive protection with selectable hiccup or latch-off fault responses
- Digitally programmable warning and fault thresholds
- 200mA adjustable output linear regulator
- 10mmx10mm 64-pin TQFP with exposed pad thermal interface
- AEC-Q100 Grade-1 qualified for operation from -40°C to +125°C
Applications
- Automotive bidirectional DC/DC converter
Block diagram
