STEVAL-ISA207V1

STEVAL-ISA207V1 is a 3A step down DC/DC switching regulator evaluation board based on the A7987 designed for automotive system battery-powered applications. The output voltage can be set starting from 0.8V. The A7987 is a 61V, 3A step-down asynchronous switching regulator with embedded high-side power MOSFET capable of delivering up to 3A of current depending on application conditions. The embedded switchover feature on VBIAS and the light load management (pulse skipping) are included to maximize power conversion efficiency across the entire load range, and the soft-start current limit threshold and switching frequency can be adjusted according to specific application requirements. The device includes an internal 250kHz oscillator that can be set up to 1.5MHz by changing an on-board resistor. Two A7987 regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current.

• Operating input voltage range from 4.5V to 60V
• Step-down (buck) conversion
• 3.3V output voltage
• Up to 3A DC output current
• 500kHz switching frequency
• 3.5ms programmed soft-start
• Compliant with ceramic output capacitors
• Auto recovery overcurrent and thermal protection