参数资料
| 型号： | DM330023 |
| 厂商： | Microchip Technology |
| 文件页数： | 44/64页 |
| 文件大小： | 0K |
| 描述： | BOARD DEV DSPICDEM MCHV |
| 产品培训模块： | Interleaved Power Factor Correction |
| 标准包装： | 1 |
| 系列： | dsPICDEM™ |
| 主要目的： | 电源管理，电机控制 |
| 嵌入式： | 是，其它 |
| 已用 IC / 零件： | dsPIC33F |
| 主要属性： | AC 电感（ACIM）电机，无刷 DC（BLDC）电机，永久磁体同步电机 PMSM） |
| 次要属性： | 功率因数修正（PFC） |
| 已供物品： | 板 |
| 产品目录页面： | 659 (CN2011-ZH PDF) |
| 相关产品： | AC300023-ND - DSPIC33F AC INDUCTION MOTOR MA330018-ND - PIM DSPIC33F MC 44P-100P QFN MA330017-ND - MODULE DSPIC33 44P-100P QFP MC MA330014-ND - MODULE DSPIC33 28P-100P QFP MC MA330013-ND - MODULE PLUG-IN DSPIC33 100TQFP |
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dsPICDEM? MCHV Development System User’s Guide
4.2.4
Feedback Circuitry
The Power Module Stage provides three different methods to sense the motor position.
These signals are also useful to determine the speed, the torque, current consumption
and the applied voltage.
Hall Sensors, the hall sensors circuitry is designed to attach open-collector configured
sensors. It has a pull-up resistor at the hall sensor inputs (R23, R24, and R25) and a
voltage divider (R26-R29, R27-R30, R28-R31) in order to scale the input waveforms to
the dsPIC DSC logic levels. C25-C27 and R26-R28 form a low-pass RC filter for each
hall sensor signal.
Phase Voltage Feedback circuitry for each phase is compounded by a voltage divider,
a current limiter and a low-pass RC filter. R79, R84 and R92 scale the phase M1 volt-
age in order to match the dsPIC DSC logic levels. R85 limits the current going to the
ADC pin (< 6mA). C51, R79 and R84 form the low-pass filter. The phase M2 and M3
has the exact same circuitry as shown in the schematic.
DC Bus Voltage Feedback is compounded by a voltage divider and a low-pass RC
filter. R75, R76 and R81 scale the DC bus voltage in order to match the dsPIC DSC
logic levels. C47, R75 and R76 form the low-pass filter.
Inverter Leg Shunt Resistor Feedback, a shunt resistor is located between the emit-
ter of the low side switches M1 and M2 and the “-DC bus”. A simple differential amplifier
circuit is used as shown in Appendix A. The operation of the circuit used for the M1
phase leg is described below:
The current is measured using the shunt resistor R86 and the operational amplifier
MCP6024 (U13A); R32, R33, R34, R36, R37 and R38 set the gain. R38 shifts the volt-
age present at the shunt resistor to a 1.65V DC level. Hence the voltage applied to the
dsPIC DSC ADC channel varies within 0-3.3V. The offset is controlled by R59, R60,
R38 and U13D. R35 and C34 filter out the high-frequency noise.
The same topology is used for the phase M2.
DC Bus Current Feedback, a shunt resistor is located between the shunt resistors of
side switches M1 and M2 and the “-DC bus”. A simple differential amplifier circuit is
used as shown in the schematic. The operation of the circuit used for sensing the DC
bus current is described as follows:
The current is sensed using the shunt resistor R95 and the operational amplifier
MCP6024 (U13C); R51, R52 and R49 set the gain. R58 shifts the voltage present
at the shunt resistor to a 1.65V DC level. Hence the voltage applied to the dsPIC
DSC ADC channel varies within 0-3.3V. The offset is controlled by R59, R60, R58
and U13D. R54 and C42 filter out the high-frequency noise.
DS70605A-page 38
Note:
It is possible to select any of these feedback signals using jumpers J12, J13
and J14, please refer to Section 4.2.8 “User Interfaces” for more
information.
? 2009 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DM330023 | 制造商:Microchip Technology Inc 功能描述:dsPICDEM MCHV Development Board |
| DM330023-2 | 功能描述:电源管理IC开发工具 dsPICDE MCHV-2 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DM-330-C | 制造商:Greenlee Textron Inc 功能描述:DMM 1000V 10A RMS |
| DM3312X101R (2500 REEL) | 制造商:Laird Technologies Inc 功能描述:IND CHIP BEAD 100OHM 100MHZ 10A - Tape and Reel |
| DM3312X101R-00 | 功能描述:FERRITE ULTRA HC 100 OHMS SMT RoHS:否 类别:滤波器 >> 铁氧体磁珠和芯片 系列:- 标准包装:1,000 系列:EMI1812 频率对应阻抗:120 欧姆 @ 100MHz 额定电流:200mA DC 电阻(DCR):最大 400 毫欧 滤波器类型:差模 - 单线 封装/外壳:1812（4532 公制） 安装类型:表面贴装 包装:带卷 (TR) 高度（最大）:0.069"（1.75mm） 尺寸/尺寸:0.177" L x 0.126" W（4.50mm x 3.20mm） 其它名称:Q1712807A |
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