Description
The NCV8851B Evaluation Board provides a convenient way to evaluate and integrate a complete high-efficiency synchronous buck converter design. No additional components are required, other than dc supplies for the input voltage and enable pin. The board also can be connected to an external clock source to synchronize the switching frequency or for spread spectrum operation. The board is configured for a 5.0 V output with a 170 kHz switching frequency and a 4 A current limit, intended for applications requiring over 3 A of current.
Additionally, modifying the NCV8851B Evaluation Board for different output voltage, switching frequency or current limit is straightforward, requiring minimal component changes.

KEY FEATUREs
• 5.0 V Output Voltage
• 91% Efficiency at 3 A
• 4 A Average Current Limit (ACL)
• 170 kHz Switching Frequency
• Average Current Mode Control
• Automotive Grade for up to TA = 105°C
• Wide Input Voltage Range of 4.5 V to 40 V
• Regulates through Load Dump Conditions
• 1.0 A Maximum Quiescent Current in Sleep Mode
• Programmable Fixed Frequency – 170 kHz to 500 kHz
• External Clock Synchronization up to 600 kHz
• Easy to Modify for Other Applications