SLOA198A September 2014 – December 2021 DRV2665 , DRV2667 , DRV2700 , DRV8662
- Trademarks
- 1 Boost Converter Basics
- 2 DRV8662, DRV2700, DRV2665, and DRV2667 Boost Converter
- 3 Configuring the Boost Converter
- 4 Boost Converter Output Voltage
- 5 Calculating the Load Current
- 6 Selecting an Inductor
- 7 Calculate the Maximum Boost Current
- 8 Output Capacitor Selection
- 9 Input Capacitor Selection
- 10PCB Layout
- 11Examples
- 12Revision History
11.1 Example: Based on the DRV8662EVM
The DRV8662EVM is the evaluation module for the DRV8662 analog high-voltage Piezo haptic driver. The board includes a MSP430 to control the DRV8662.
Figure 11-1 illustrates a simplified version of the DRV8662EVM.
Figure 11-1 Simplified Version of the DRV8662EVMThe following table contains the primary components of the design. The board was configured for a SEMCO Piezo actuator.
| Reference Designator | Value | Manufacturer Part # | Manufacturer |
|---|---|---|---|
| L1 | 4.7 µH / 1.8 ASAT | LPS4018-472MLB | Coilcraft |
| Piezo Actuator | 25 nF at 150 V, 200 Hz | PHAT423535XX | SEMCO |
The full design documents including the schematic, layout, and BOM are found in the DRV2667EVM-CT User’s Guide.