ZHCS389C June 2011 – December 2022 DRV8662
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RGP|20
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RGP|20
訂購信息
7.5.1 Programming the Boost Voltage
The boost output voltage (VBST) is programmed via two external resistors as shown in Figure 7-1.
Figure 7-1 Boost Voltage ProgrammingThe boost output voltage is given by Equation 1:
where VFB = 1.32 V.
VBST should be programmed to a value 5.0 V greater than the largest peak voltage expected in the system to allow adequate amplifier headroom. Since the programming range for the boost voltage extends to 105 V, the leakage current through the resistor divider can become significant. It is recommended that the sum of the resistance of R1 and R2 be greater than 500 kΩ. Note that when resistor values greater than 1 MΩ are used, PCB contamination may cause boost voltage inaccuracy. Exercise caution when soldering large resistances, and clean the area when finished for best results.