ZHCSIN3A August 2018 – June 2019 DRV8350 , DRV8350R , DRV8353 , DRV8353R
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-Shunt Amplifiers (DRV8353 and DRV8353R Only)
- 8.3.5 Step-Down Buck Regulator
- 8.3.6
Gate Driver Protective Circuits
- 8.3.6.1 VM Supply and VDRAIN Undervoltage Lockout (UVLO)
- 8.3.6.2 VCP Charge-Pump and VGLS Regulator Undervoltage Lockout (GDUV)
- 8.3.6.3 MOSFET VDS Overcurrent Protection (VDS_OCP)
- 8.3.6.4 VSENSE Overcurrent Protection (SEN_OCP)
- 8.3.6.5 Gate Driver Fault (GDF)
- 8.3.6.6 Overcurrent Soft Shutdown (OCP Soft)
- 8.3.6.7 Thermal Warning (OTW)
- 8.3.6.8 Thermal Shutdown (OTSD)
- 8.3.6.9 Fault Response Table
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Maps
- 8.6.1 Status Registers
- 8.6.2
Control Registers
- 8.6.2.1 Driver Control Register (address = 0x02h)
- 8.6.2.2 Gate Drive HS Register (address = 0x03h)
- 8.6.2.3 Gate Drive LS Register (address = 0x04h)
- 8.6.2.4 OCP Control Register (address = 0x05h)
- 8.6.2.5 CSA Control Register (DRV8353 and DRV8353R Only) (address = 0x06h)
- 8.6.2.6 Driver Configuration Register (DRV8353 and DRV8353R Only) (address = 0x07h)
-
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
- 9.2.1.2.1 External MOSFET Support
- 9.2.1.2.2 IDRIVE Configuration
- 9.2.1.2.3 VDS Overcurrent Monitor Configuration
- 9.2.1.2.4 Sense-Amplifier Bidirectional Configuration (DRV8353 and DRV8353R)
- 9.2.1.2.5 Single Supply Power Dissipation
- 9.2.1.2.6 Single Supply Power Dissipation Example
- 9.2.1.2.7 Buck Regulator Configuration (DRV8350R and DRV8353R)
- 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
8.3.1.1.3 1x PWM Mode (PWM_MODE = 10b or MODE Pin = Hi-Z)
In this mode, the DRV835x family of devices uses 6-step block commutation tables that are stored internally. This feature allows for a three-phase BLDC motor to be controlled using a single PWM sourced from a simple controller. The PWM is applied on the INHA pin and determines the output frequency and duty cycle of the half-bridges.
The half-bridge output states are managed by the INLA, INHB, and INLB pins which are used as state logic inputs. The state inputs can be controlled by an external controller or connected directly to hall sensor digital outputs from the motor (INLA = HALL_A, INHB = HALL_B, INLB = HALL_C). The 1x PWM mode usually operates with synchronous rectification, however it can be configured to use asynchronous diode freewheeling rectification on SPI devices. This configuration is set using the 1PWM_COM bit through the SPI registers.
The INHC input controls the direction through the 6-step commutation table which is used to change the direction of the motor when hall sensors are directly controlling the INLA, INHB, and INLB state inputs. Tie the INHC pin low if this feature is not required.
The INLC input brakes the motor by turning off all high-side MOSFETs and turning on all low-side MOSFETs when it is pulled low. This brake is independent of the states of the other input pins. Tie the INLC pin high if this feature is not required.
Table 3. Synchronous 1x PWM Mode
| LOGIC AND HALL INPUTS | GATE-DRIVE OUTPUTS | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STATE | INHC = 0 | INHC = 1 | PHASE A | PHASE B | PHASE C | DESCRIPTION | |||||||
| INLA | INHB | INLB | INLA | INHB | INLB | GHA | GLA | GHB | GLB | GHC | GLC | ||
| Stop | 0 | 0 | 0 | 0 | 0 | 0 | L | L | L | L | L | L | Stop |
| Align | 1 | 1 | 1 | 1 | 1 | 1 | PWM | !PWM | L | H | L | H | Align |
| 1 | 1 | 1 | 0 | 0 | 0 | 1 | L | L | PWM | !PWM | L | H | B → C |
| 2 | 1 | 0 | 0 | 0 | 1 | 1 | PWM | !PWM | L | L | L | H | A → C |
| 3 | 1 | 0 | 1 | 0 | 1 | 0 | PWM | !PWM | L | H | L | L | A → B |
| 4 | 0 | 0 | 1 | 1 | 1 | 0 | L | L | L | H | PWM | !PWM | C → B |
| 5 | 0 | 1 | 1 | 1 | 0 | 0 | L | H | L | L | PWM | !PWM | C → A |
| 6 | 0 | 1 | 0 | 1 | 0 | 1 | L | H | PWM | !PWM | L | L | B → A |
Table 4. Asynchronous 1x PWM Mode 1PWM_COM = 1 (SPI Only)
| LOGIC AND HALL INPUTS | GATE-DRIVE OUTPUTS | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STATE | INHC = 0 | INHC = 1 | PHASE A | PHASE B | PHASE C | DESCRIPTION | |||||||
| INLA | INHB | INLB | INLA | INHB | INLB | GHA | GLA | GHB | GLB | GHC | GLC | ||
| Stop | 0 | 0 | 0 | 0 | 0 | 0 | L | L | L | L | L | L | Stop |
| Align | 1 | 1 | 1 | 1 | 1 | 1 | PWM | L | L | H | L | H | Align |
| 1 | 1 | 1 | 0 | 0 | 0 | 1 | L | L | PWM | L | L | H | B → C |
| 2 | 1 | 0 | 0 | 0 | 1 | 1 | PWM | L | L | L | L | H | A → C |
| 3 | 1 | 0 | 1 | 0 | 1 | 0 | PWM | L | L | H | L | L | A → B |
| 4 | 0 | 0 | 1 | 1 | 1 | 0 | L | L | L | H | PWM | L | C → B |
| 5 | 0 | 1 | 1 | 1 | 0 | 0 | L | H | L | L | PWM | L | C → A |
| 6 | 0 | 1 | 0 | 1 | 0 | 1 | L | H | PWM | L | L | L | B → A |
Figure 22 and Figure 23 show the different possible configurations in 1x PWM mode.
Figure 22. 1x PWM—Simple Controller 
Figure 23. 1x PWM—Hall Sensor