ZHCSSV1 august 2023 MCF8316C-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 應用
- 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 Motor Control Input Sources
- 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 Active Braking
- 7.3.16 Output PWM Switching Frequency
- 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 Under Voltage 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 Lock Detection Current Limit (LOCK_ILIMIT)
- 7.3.22.10 FET Thermal Warning (OTW)
- 7.3.22.11 FET Thermal Shutdown (TSD_FET)
- 7.3.22.12 Motor Lock (MTR_LCK)
- 7.3.22.13 Motor Lock Detection
- 7.3.22.14 MPET Faults
- 7.3.22.15 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
7.3.8.5.1 Linear Reference Profiles
Note:
- For all types of reference profiles, a zero input reference (0-V in analog mode, 0% duty in PWM mode, DIGITAL_SPEED_CTRL = 0b I2C mode or 0-Hz in frequency mode) stops the motor irrespective of the reference profile configuration.
- The reference value in Figure 7-18,
Figure 7-19, Figure 7-20 is decided by control mode (SPEED_LOOP_DIS) as follows,
- Speed control mode (SPEED_LOOP_DIS = 0b): SPEED_REF (Hz) = (REF_x/255) x MAX_SPEED (Hz)
- Current control mode (SPEED_LOOP_DIS = 1b): CURRENT_REF (A) = (REF_x/255) x ILIMIT (A)
Figure 7-18 Linear Reference ProfileLinear reference profiles can be configured by setting REF_PROFILE_CONFIG to 01b. Linear profiles feature input references (SPEED_REF or CURRENT_REF) which change linearly between REF_CLAMP1 and REF_CLAMP2 with different slopes which can be set by configuring DUTY_x and REF_x.
- DUTY_OFF1 configures the duty command below which the reference will be REF_OFF1.
- DUTY_OFF1 and DUTY_ON1 configure a hysteresis between reference levels, REF_CLAMP1 and REF_OFF1 as shown in Figure 7-18.
- DUTY_CLAMP1 configures the duty command till which reference will be constant with a value REF_CLAMP1. DUTY_CLAMP1 can be placed anywhere between DUTY_ON1 and DUTY_A.
- DUTY_A configures the duty command for reference REF_A. The reference changes from REF_CLAMP1 to REF_A linearly between DUTY_CLAMP1 and DUTY_A. DUTY_A to DUTY_E has to be in the same order as shown in Figure 7-18.
- DUTY_B configures the duty command for reference REF_B. The reference changes linearly between DUTY_A and DUTY_B.
- DUTY_C configures the duty command for reference REF_C. The reference changes linearly between DUTY_B and DUTY_C.
- DUTY_D configures the duty command for reference REF_D. The reference changes linearly between DUTY_C and DUTY_D.
- DUTY_E configures the duty command for reference REF_E. The reference changes linearly between DUTY_D and DUTY_E.
- DUTY_CLAMP2 configures the duty command above which the reference will be constant at REF_CLAMP2. REF_CLAMP2 configures this constant reference between DUTY_CLAMP2 and DUTY_OFF2 . The reference changes linearly between DUTY_E and DUTY_CLAMP2. DUTY_CLAMP2 can be placed anywhere between DUTY_E and DUTY_ON2.
- DUTY_OFF2 and DUTY_ON2 configure a hysteresis between reference levels REF_CLAMP2 and REF_OFF2 as shown in Figure 7-18.
- DUTY_OFF2 configures the duty command above which the reference will change from REF_CLAMP2 to REF_OFF2.