ZHCSP55A October 2019 – October 2021 DRV10982-Q1
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 說明（續(xù)）
- 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
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- PWP|24
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- PWP|24
訂購信息
8.4.1.2 BEMF Constant
The BEMF constant, Kt[6:0] describes the phase-to-phase BEMF voltage of the motor as a function of the motor velocity.
Figure 8-9 shows the measurement technique for this constant as used in the DRV10982-Q1 device.
Figure 8-9 KtPH DefinitionWith the motor coasting, use an oscilloscope to capture the differential voltage waveform between any two phases. Derive the BEMF constant used by the DRV10982-Q1 device as shown in Equation 1.
Equation 1. KtPH = Ep × te
where
- Ep is ? the peak-to-peak amplitude of the measured voltage
- te is the electrical period
The measured BEMF constant (KtPH) must be converted to a 7-bit digital register value Kt[6:0] (combination of KtShift[2:0] and KtValue[3:0]) to program the BEMF constant value. The digital register value can be determined as follows:
- Convert the measured KtPH to a weighted digital value: Ktph_dig = 1090 × KtPH
- Encode the digital value such that Ktph_dig = KtValue[3:0] << KtShift[2:0].
The maximum KtPH that can be programmed is 1760 mV/Hz. This represents a digital value of 1920 and an encoded Kt[6:0] value of 0x7Fh. The minimum KtPH that can be programmed is 0.92 mV/Hz, which represents a digital value of 1 and an encoded Kt[6:0] value of 0x01h.
For convenience, the encoded value of Kt[6:0] may also be obtained from Table 8-4.
Table 8-4 BEMF Constant Look-Up Table
| Kt[6:0] {KtShift[2:0], KtValue[3:0]} | KtPH (mV/Hz) | Kt [6:0] {KtShift[2:0], KtValue[3:0]} | KtPH (mV/Hz) | Kt [6:0] {KtShift[2:0], KtValue[3:0]} | KtPH (mV/Hz) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| BINARY | HEX | BINARY | HEX | BINARY | HEX | |||||
| 000 0000 | 0x00 | 0 | 010 1000 | 0x28 | 29.44 | 101 1000 | 0x58 | 235.52 | ||
| 000 0001 | 0x01 | 0.92 | 010 1001 | 0x29 | 33.12 | 101 1001 | 0x59 | 264.96 | ||
| 000 0010 | 0x02 | 1.84 | 010 1010 | 0x2A | 36.8 | 101 1010 | 0x5A | 294.4 | ||
| 000 0011 | 0x03 | 2.76 | 010 1011 | 0x2B | 40.48 | 101 1011 | 0x5B | 323.84 | ||
| 000 0100 | 0x04 | 3.68 | 010 1100 | 0x2C | 44.16 | 101 1100 | 0x5C | 353.28 | ||
| 000 0101 | 0x05 | 4.6 | 010 1101 | 0x2D | 47.84 | 101 1101 | 0x5D | 382.72 | ||
| 000 0110 | 0x06 | 5.52 | 010 1110 | 0x2E | 51.52 | 101 1110 | 0x5E | 412.16 | ||
| 000 0111 | 0x07 | 6.44 | 010 1111 | 0x2F | 55.2 | 101 1111 | 0x5F | 441.6 | ||
| 000 1000 | 0x08 | 7.36 | 011 1000 | 0x38 | 58.88 | 110 1000 | 0x68 | 471.04 | ||
| 000 1001 | 0x09 | 8.28 | 011 1001 | 0x39 | 66.24 | 110 1001 | 0x69 | 529.92 | ||
| 000 1010 | 0x0A | 9.2 | 011 1010 | 0x3A | 73.6 | 110 1010 | 0x6A | 588.8 | ||
| 000 1011 | 0x0B | 10.12 | 011 1011 | 0x3B | 80.96 | 110 1011 | 0x6B | 647.68 | ||
| 000 1100 | 0x0C | 11.04 | 011 1100 | 0x3C | 88.32 | 110 1100 | 0x6C | 706.56 | ||
| 000 1101 | 0x0D | 11.96 | 011 1101 | 0x3D | 95.68 | 110 1101 | 0x6D | 765.44 | ||
| 000 1110 | 0x0E | 12.88 | 011 1110 | 0x3E | 103.04 | 110 1110 | 0x6E | 824.32 | ||
| 000 1111 | 0x0F | 13.8 | 011 1111 | 0x3F | 110.4 | 110 1111 | 0x6F | 883.2 | ||
| 001 1000 | 0x18 | 14.72 | 100 1000 | 0x48 | 117.76 | 111 1000 | 0x78 | 942.08 | ||
| 001 1001 | 0x19 | 16.56 | 100 1001 | 0x49 | 132.48 | 111 1001 | 0x79 | 1059.84 | ||
| 001 1010 | 0x1A | 18.4 | 100 1010 | 0x4A | 147.2 | 111 1010 | 0x7A | 1177.6 | ||
| 001 1011 | 0x1B | 20.24 | 100 1011 | 0x4B | 161.92 | 111 1011 | 0x7B | 1295.36 | ||
| 001 1100 | 0x1C | 22.08 | 100 1100 | 0x4C | 176.64 | 111 1100 | 0x7C | 1413.12 | ||
| 001 1101 | 0x1D | 23.92 | 100 1101 | 0x4D | 191.36 | 111 1101 | 0x7D | 1530.88 | ||
| 001 1110 | 0x1E | 25.76 | 100 1110 | 0x4E | 206.08 | 111 1110 | 0x7E | 1648.64 | ||
| 001 1111 | 0x1F | 27.6 | 100 1111 | 0x4F | 220.8 | 111 1111 | 0x7F | 1766.4 | ||