AN603 Overview
Key Features
- integral high-side drive circuitry and an internal voltage regulator, which allows operation over a 20to 40-V dc input voltage range
- Protection features include cross-conduction protection, current limiting, and undervoltage lockout
- The FAULT outputs indicate when undervoltage or overcurrent shutdown has occurred
- The Si9978DW is packaged in a 24-pin wide body SOIC
- CONTROL LOGIC The Si9978 has two modes of operation, full H-bridge, and independent half-bridge
- The mode of operation determines the function of the input pins and the FAULT outputs
- With the MODE pin at logic 1, which is the default condition, the Si9978 functions as a full H-bridge
- With the MODE pin at logic 0, the
