ZHCS389C June 2011 – December 2022 DRV8662
PRODUCTION DATA
Inductor selection plays a critical role in the performance of the DRV8662. The range of recommended inductances is from 3.3 μH to 22 μH. In general, higher inductances within a given manufacturer’s inductor series have lower saturation current limits, and vice-versa. When a larger inductance is chosen, the DRV8662 boost converter will automatically run at a lower switching frequency and incur less switching losses; however, larger values of inductance may have higher equivalent series resistance (ESR), which will increase the parasitic inductor losses. Since lower values of inductance generally have higher saturation currents, they are a better choice when attempting to maximize the output current of the boost converter. The following table has sample inductors that provide adequate performance.
For inductor recommendations, see DRV8662EVM User's Guide (SLOU319)