SLOA328 December 2022 DRV8262 , DRV8462
PRODUCTION DATA
Motor drivers require external components like capacitors, resistors, and diodes connected from various pins of the motor driver to FETs, voltage supply, or ground. Regardless of whether it is an integrated FET driver or a gate driver, passive components surrounding the driver are necessary for certain bypassing, protection and control features.
As gate drivers have their FETs located externally, more passive components are expected to be present - leading to an increase in the external bill of materials. The following points must be considered by a system designer:
Table 2-3 shows the comparison between the external BOM of DRV8262 and DRV8701.
Device | DRV8262 | DRV8701 |
---|---|---|
Number of Resistors | 2 | 9 |
Number of Capacitors | 8 | 13 |
Number of MOSFETs | 0 | 4 |
Total number of Components | 10 | 26 |
Table 2-4 shows the comparison between the external BOM of DRV8462 and DRV8711.
Device | DRV8462 | DRV8711 |
---|---|---|
Number of Resistors | 2 | 14 |
Number of Capacitors | 8 | 7 |
Number of MOSFETs | 0 | 8 |
Total number of Components | 10 | 29 |
As is evident, integrated FET drivers require far lesser number of external components, leading to lower external BOM cost and higher reliability.