ZHCSPQ3A december 2022 – april 2023 MCF8315A
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Output Stage
- 7.3.2 Device Interface
- 7.3.3 Step-Down Mixed-Mode Buck Regulator
- 7.3.4 AVDD Linear Voltage Regulator
- 7.3.5 Charge Pump
- 7.3.6 Slew Rate Control
- 7.3.7 Cross Conduction (Dead Time)
- 7.3.8 Speed Control
- 7.3.9 Starting the Motor Under Different Initial Conditions
- 7.3.10 Motor Start Sequence (MSS)
- 7.3.11 Closed Loop Operation
- 7.3.12 Motor Parameters
- 7.3.13 Motor Parameter Extraction Tool (MPET)
- 7.3.14 Anti-Voltage Surge (AVS)
- 7.3.15 Output PWM Switching Frequency
- 7.3.16 Active Braking
- 7.3.17 PWM Modulation Schemes
- 7.3.18 Dead Time Compensation
- 7.3.19 Motor Stop Options
- 7.3.20 FG Configuration
- 7.3.21 DC Bus Current Limit
- 7.3.22
Protections
- 7.3.22.1 VM Supply Undervoltage Lockout
- 7.3.22.2 AVDD Undervoltage Lockout (AVDD_UV)
- 7.3.22.3 BUCK Undervoltage Lockout (BUCK_UV)
- 7.3.22.4 VCP Charge Pump Undervoltage Lockout (CPUV)
- 7.3.22.5 Overvoltage Protection (OVP)
- 7.3.22.6 Overcurrent Protection (OCP)
- 7.3.22.7 Buck Overcurrent Protection
- 7.3.22.8 Hardware Lock Detection Current Limit (HW_LOCK_ILIMIT)
- 7.3.22.9 Thermal Warning (OTW)
- 7.3.22.10 Thermal Shutdown (TSD)
- 7.3.22.11 Motor Lock (MTR_LCK)
- 7.3.22.12 Motor Lock Detection
- 7.3.22.13 MPET Faults
- 7.3.22.14 IPD Faults
- 7.4 Device Functional Modes
- 7.5 External Interface
- 7.6 EEPROM access and I2C interface
- 7.7 EEPROM (Non-Volatile) Register Map
- 7.8 RAM (Volatile) Register Map
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- RGF|40
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- RGF|40
訂購信息
7.3.8.5.2 Staircase Speed Profile
Figure 7-20 Staircase Speed ProfileStaircase speed profiles can be configured by setting SPEED_PROFILE_CONFIG to 10b. Staircase speed profiles feature speed changes in steps between SPEED_CLAMP1 and SPEED_CLAMP2. DUTY_x and SPEED_x configures the speed and duty command at which the step is increased
- DUTY_ON1 configures the duty command above which MCF8315A starts driving the motor (to speed reference set by SPEED_CLAMP1) when the current speed reference is zero. When current speed reference is zero and duty command is below DUTY_ON1, MCF8315A continues to be in off state and motor is stationary.
- DUTY_OFF1 configures the duty command below which the speed reference changes from SPEED_CLAMP1 to SPEED_OFF1.
- DUTY_CLAMP1 configures the duty command till which speed reference will be constant. SPEED_CLAMP1 configures this constant speed reference between DUTY_OFF1 and DUTY_CLAMP1.
- DUTY_A configures the duty command for speed reference SPEED_A. There is a step change in speed reference from SPEED_CLAMP1 to SPEED_A at DUTY_CLAMP1.
- DUTY_B configures the duty command for speed reference SPEED_B. There is a step change in speed reference from SPEED_A to SPEED_B at DUTY_A.
- DUTY_C configures the duty command for speed reference SPEED_C. There is a step change in speed reference from SPEED_B to SPEED_C at DUTY_B.
- DUTY_D configures the duty command for speed reference SPEED_D. There is a step change in speed reference from SPEED_C to SPEED_D at DUTY_C.
- DUTY_E configures the duty command for speed reference SPEED_E. There is a step change in speed reference from SPEED_D to SPEED_E at DUTY_D.
- DUTY_CLAMP2 configures the duty command above which the speed reference will be constant at SPEED_CLAMP2. SPEED_CLAMP2 configures this constant speed reference between DUTY_CLAMP2 and DUTY_OFF2. There is a step change in speed reference from SPEED_E to SPEED_CLAMP2 at DUTY_E.
- DUTY_ON2 configures the duty command below which MCF8315A starts driving the motor (to speed reference set by SPEED_CLAMP2) when the current speed reference is zero. When current speed reference is zero and duty command is above DUTY_ON2, MCF8315A continues to be in off state and motor is stationary.
- DUTY_OFF2 configures the duty command above which the speed reference will change from SPEED_CLAMP2 to SPEED_OFF2.