SLVSD14A June 2017 – June 2020 DRV10983-Q1
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (Continued)
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 Motor Parameters
- 8.4.2 Starting the Motor Under Different Initial Conditions
- 8.4.3 Motor Start Sequence
- 8.4.4 Align Current
- 8.4.5 Start-Up Current Setting
- 8.4.6 Closed Loop
- 8.4.7 Current Limit
- 8.4.8 Lock Detect and Fault Handling
- 8.4.9 Anti Voltage Suppression Function
- 8.4.10 PWM Output
- 8.4.11 FG Customized Configuration
- 8.4.12
Diagnostics and Visibility
- 8.4.12.1 Motor-Status Readback
- 8.4.12.2 Motor-Speed Readback
- 8.4.12.3 Motor Electrical-Period Readback
- 8.4.12.4 BEMF Constant Read Back
- 8.4.12.5 Motor Estimated Position by IPD
- 8.4.12.6 Supply-Voltage Readback
- 8.4.12.7 Speed-Command Readback
- 8.4.12.8 Speed-Command Buffer Readback
- 8.4.12.9 Fault Diagnostics
- 8.5
Register Maps
- 8.5.1 I2C Serial Interface
- 8.5.2 Register Map
- 8.5.3
Register Descriptions
- 8.5.3.1 FaultReg Register (address = 0x00) [reset = 0x00]
- 8.5.3.2 MotorSpeed Register (address = 0x01) [reset = 0x00]
- 8.5.3.3 MotorPeriod Register (address = 0x02) [reset = 0x00]
- 8.5.3.4 MotorKt Register (address = 0x03) [reset = 0x00]
- 8.5.3.5 MotorCurrent Register (address = 0x04) [reset = 0x00]
- 8.5.3.6 IPDPosition–SupplyVoltage Register (address = 0x05) [reset = 0x00]
- 8.5.3.7 SpeedCmd–spdCmdBuffer Register (address = 0x06) [reset = 0x00]
- 8.5.3.8 AnalogInLvl Register (address = 0x07) [reset = 0x00]
- 8.5.3.9 DeviceID–RevisionID Register (address = 0x08) [reset = 0x00]
- 8.5.3.10 DeviceID–RevisionID Register (address = 0x08) [reset = 0x00]
- 8.5.3.11 Unused Registers (addresses = 0x011 Through 0x2F)
- 8.5.3.12 SpeedCtrl Register (address = 0x30) [reset = 0x00]
- 8.5.3.13 EEPROM Programming1 Register (address = 0x31) [reset = 0x00]
- 8.5.3.14 EEPROM Programming2 Register (address = 0x32) [reset = 0x00]
- 8.5.3.15 EEPROM Programming3 Register (address = 0x33) [reset = 0x00]
- 8.5.3.16 EEPROM Programming4 Register (address = 0x34) [reset = 0x00]
- 8.5.3.17 EEPROM Programming5 Register (address = 0x35) [reset = 0x00]
- 8.5.3.18 EEPROM Programming6 Register (address = 0x36) [reset = 0x00]
- 8.5.3.19 Unused Registers (addresses = 0x37 Through 0x5F)
- 8.5.3.20 EECTRL Register (address = 0x60) [reset = 0x00]
- 8.5.3.21 Unused Registers (addresses = 0x61 Through 0x8F)
- 8.5.3.22 CONFIG1 Register (address = 0x90) [reset = 0x00]
- 8.5.3.23 CONFIG2 Register (address = 0x91) [reset = 0x00]
- 8.5.3.24 CONFIG3 Register (address = 0x92) [reset = 0x00]
- 8.5.3.25 CONFIG4 Register (address = 0x93) [reset = 0x00]
- 8.5.3.26 CONFIG5 Register (address = 0x94) [reset = 0x00]
- 8.5.3.27 CONFIG6 Register (address = 0x95) [reset = 0x00]
- 8.5.3.28 CONFIG7 Register (address = 0x96) [reset = 0x00]
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
8.4.6.7 Commutation Control Advance Angle
To achieve the best efficiency, it is often desirable to control the drive state of the motor so that the motor phase current is aligned with the motor BEMF voltage.
To align the motor phase current with the motor BEMF voltage, consider the inductive effect of the motor. The voltage applied to the motor should be applied in advance of the motor BEMF voltage (see Figure 31). The DRV10983-Q1 device provides configuration bits for controlling the time (tadv) between the driving voltage and BEMF.
For motors with salient pole structures, aligning the motor BEMF voltage with the motor current may not achieve the best efficiency. In these applications, the timing advance should be adjusted accordingly. Accomplish this by operating the system at constant speed and load conditions and by adjusting tadv until the minimum current is achieved.
Figure 31. Advance Time (tadv) Definition The DRV10983-Q1 device has two options for adjusting the motor commutate advance time. When CommAdvMode = 0, mode 0 is selected. When CommAdvMode = 1, mode 1 is selected.
Mode 0: tadv is maintained to be a fixed time relative to the estimated BEMF zero cross as determined by Equation 5.
Mode 1: tadv is maintained to be a variable time relative to the estimated BEMF zero cross as determined by Equation 6.
where
- U is the phase voltage amplitude
- BEMF is phase BEMF amplitude
tSETTING (in µs) is determined by the configuration of the TCtrlAdvShift [2:0] and TCtrlAdvValue [3:0] bits as defined in Equation 7. For convenience, the available tSETTING values are provided in Table 6.
Table 6. Configuring Commutation Advance Timing by Adjusting tSETTING
| TCtrlAdv [6:0]
{TCtrlAdvShift[2:0], TCtrlAdvValue[3:0]} |
tSETTING (µs) | TCtrlAdv [6:0]
{TCtrlAdvShift[2:0], TCtrlAdvValue[3:0]} |
tSETTING (µs) | TCtrlAdv [6:0]
{TCtrlAdvShift[2:0], TCtrlAdvValue[3:0]} |
tSETTING (µs) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Binary | Hex | Binary | Hex | Binary | Hex | |||||
| 000 0000 | 0x00 | 0.0 | 010 1000 | 0x28 | 80 | 101 1000 | 0x58 | 640 | ||
| 000 0001 | 0x01 | 2.5 | 010 1001 | 0x29 | 90 | 101 1001 | 0x59 | 720 | ||
| 000 0010 | 0x02 | 5 | 010 1010 | 0x2A | 100 | 101 1010 | 0x5A | 800 | ||
| 000 0011 | 0x03 | 7.5 | 010 1011 | 0x2B | 110 | 101 1011 | 0x5B | 880 | ||
| 000 0100 | 0x04 | 10 | 010 1100 | 0x2C | 120 | 101 1100 | 0x5C | 960 | ||
| 000 0101 | 0x05 | 12.5 | 010 1101 | 0x2D | 130 | 101 1101 | 0x5D | 1040 | ||
| 000 0110 | 0x06 | 15 | 010 1110 | 0x2E | 140 | 101 1110 | 0x5E | 1120 | ||
| 000 0111 | 0x07 | 17.5 | 010 1111 | 0x2F | 150 | 101 1111 | 0x5F | 1200 | ||
| 000 1000 | 0x08 | 20 | 011 1000 | 0x38 | 160 | 110 1000 | 0x68 | 1280 | ||
| 000 1001 | 0x09 | 22.5 | 011 1001 | 0x39 | 170 | 110 1001 | 0x69 | 1440 | ||
| 000 1010 | 0x0A | 25 | 011 1010 | 0x3A | 200 | 110 1010 | 0x6A | 1600 | ||
| 000 1011 | 0x0B | 27.5 | 011 1011 | 0x3B | 220 | 110 1011 | 0x6B | 1760 | ||
| 000 1100 | 0x0C | 30 | 011 1100 | 0x3C | 240 | 110 1100 | 0x6C | 1920 | ||
| 000 1101 | 0x0D | 32.5 | 011 1101 | 0x3D | 260 | 110 1101 | 0x6D | 2080 | ||
| 000 1110 | 0x0E | 35 | 011 1110 | 0x3E | 280 | 110 1110 | 0x6E | 2240 | ||
| 000 1111 | 0x0F | 37.5 | 011 1111 | 0x3F | 300 | 110 1111 | 0x6F | 2400 | ||
| 001 1000 | 0x18 | 40 | 100 1000 | 0x48 | 320 | 111 1000 | 0x78 | 2560 | ||
| 001 1001 | 0x19 | 45 | 100 1001 | 0x49 | 360 | 111 1001 | 0x79 | 2880 | ||
| 001 1010 | 0x1A | 50 | 100 1010 | 0x4A | 400 | 111 1010 | 0x7A | 3200 | ||
| 001 1011 | 0x1B | 55 | 100 1011 | 0x4B | 440 | 111 1011 | 0x7B | 3520 | ||
| 001 1100 | 0x1C | 60 | 100 1100 | 0x4C | 480 | 111 1100 | 0x7C | 3840 | ||
| 001 1101 | 0x1D | 65 | 100 1101 | 0x4D | 520 | 111 1101 | 0x7D | 4160 | ||
| 001 1110 | 0x1E | 70 | 100 1110 | 0x4E | 560 | 111 1110 | 0x7E | 4480 | ||
| 001 1111 | 0x1F | 75 | 100 1111 | 0x4F | 600 | 111 1111 | 0x7F | 4800 | ||