Allegro MicroSystems AHV85003/AHV85043 Isolated SiC GateDriver Chip Set

Allegro MicroSystems AHV85003 and AHV85043 Isolated Silicon Carbide (SiC) GateDriver Chip Set is optimized for driving discrete SiC FETs in applications such as automotive Onboard-Chargers (OBC), solar inverters, industrial robotics, data center power shelves, and general power supply applications. When combined with one of the recommended external transformers, the Allegro MicroSystems AHV85003 and AHV85043 Isolated SiC GateDriver Chip Set provides a self-powered, isolated gate drive solution ideal for multiple applications and topologies. A selection of recommended third-party transformers is available, each optimized for different drive voltages, gate charges, and isolation characteristics.

Features

Power-thru chipset
- Interfaces to external pulse transformers
- Transmits both the PWM signal and bias power
- No high-side bootstrap or external bias-supply
AEC-Q100 Grade 1 qualification
Bipolar drive, selectable regulated positive rail, and configurable negative rails (secondary)
Separate output gate pull-up and pull-down pins (6A each)
Miller clamp (internal)
Supply voltage of 10.5V < V_DRV < 13.2V

UVLO on primary V_DRV and secondary V_SECP supply rails
EN (enable) input and FAULT output pins
Over-temperature protection (primary and secondary)
Wide -40°C to 125°C operating temperature range (TA)
When matched with recommended external transformers
- Delivers up to 130nC gate charge at 25V (secondary)
- 85ns prop delay (typical)
- <50ns skew and pulse-width-distortion
- CMTI >100V/ns dv/dt immunity