ZHCSG01C February 2017 – August 2018 DRV8320 , DRV8320R , DRV8323 , DRV8323R
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Three Phase Smart Gate Drivers
- 8.3.2 DVDD Linear Voltage Regulator
- 8.3.3 Pin Diagrams
- 8.3.4 Low-Side Current Sense Amplifiers (DRV8323 and DRV8323R Only)
- 8.3.5 Step-Down Buck Regulator
- 8.3.6 Gate Driver Protective Circuits
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Maps
- Table 1. DRV832xS and DRV832xRS Register Map
- 8.6.1 Status Registers
- 8.6.2 Control Registers
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1
Primary Application
- 9.2.1.1 Design Requirements
- 9.2.1.2 Detailed Design Procedure
- 9.2.1.3 Application Curves
- 9.2.2 Alternative Application
- 9.2.1
Primary Application
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機械、封裝和可訂購信息
8.4.2.1 Continuous Conduction Mode (CCM)
The LMR16006 integrated buck regulator steps the input voltage down to a lower output voltage. In continuous conduction mode (when the inductor current never reaches zero at CCM), the buck regulator operates in two cycles. The power switch is connected between the VIN and SW pins. During the first cycle of operation, the transistor is closed and the diode is reverse biased. Energy is collected in the inductor and the load current is supplied by the COUT capacitor and the rising current through the inductor. During the second cycle of operation, the transistor is open and the diode is forward biased because the inductor current cannot instantaneously change direction. The energy stored in the inductor is transferred to the load and output capacitor. The ratio of these two cycles determines the output voltage. Equation 7 and Equation 8 define the approximate output voltage.
where
- D is the duty cycle of the switch
The value of D and D' is required for design calculations.