参数资料
| 型号： | DM300022 |
| 厂商： | Microchip Technology |
| 文件页数： | 25/56页 |
| 文件大小： | 0K |
| 描述： | MODULE PWR DSPICDEM MC1L LV 3PHS |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电机控制 |
| 嵌入式： | 是，MCU，16 位 |
| 已用 IC / 零件： | dsPIC33FJxxxMC |
| 主要属性： | 3 相低压电源模块 |
| 次要属性： | 运动传感器输入：霍尔传感器或光学编码器 |
| 已供物品： | 子板 |
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Set Up and Operation
? R60, R62, R67, Q12, C24, C28 – These components act to provide a dynamic
level shifting circuit to U23 while Q10 switches. Inductance of the power tracking
between the source of Q10 due to the physical board layout means there is a
substantial transient voltage (up to 2V in this case) between the +15V supply star
point reference and the source of Q10. This simple low cost circuit allows the
power supply of U23 to move transiently. Q12 provides a level shift to ensure
correct assertion of the firing command. In applications with fewer constraints on
physical layout and/or lower switching speed requirements, these components
may not be needed.
? Brake Resistor – A 50W metal clad 75W resistor mounted to the heat sink is
connected to pads J7 and J8. The value of the resistor has been chosen to allow
a maximum dissipation of 45W. If the user wishes to be able to dissipate more
power, then an external resistor can be connected to pins 6 and 7 of the 7-pin
output connector. This will operate in parallel with the internal resistor. If the user
wishes to change the value of the internal resistor or disconnect it, they should
1.5.5
Isolated Current Feedback (Appendix A Sheets 1 and 2)
In order to provide isolated current feedback, Hall effect closed loop DC current
transducers (LEM LTS 15-NP) devices have been installed. These devices have the
following characteristics:
? Single 5V supply with 2.5V (nominal) representing 0A
? Bipolar current sensing with ±48A given by 4.5V and 0.5V respectively with a
single turn through the transducer.
? >200 kHz bandwidth
? 3 kV AC isolation
A detailed device data sheet can be obtained from www.lem.com.
Two such devices (U3 and U4) are installed in series with the output connections of
phases R and Y. These are configured to have 2 turns through the device with LK 14
and 17 installed. This gives a maximum sensed current of ±24A and a gain of 12A/V.
Note that a third device is not required, as the sum of the output line currents must
always be zero due to symmetry. The one exception to this is during a FAULT
condition that is detected elsewhere.
The third device (U2) is on the positive DC input of wire of the input power stage (see
Figure 1-1). This device is configured to have 2 turns through it as delivered with LK2
installed. This gives a maximum sensed current of 24A and a gain of 12A/V. U2 is
used to provide input over current protection, as well as feedback of the DC input
current.
? 2003 Microchip Technology Inc.
DS70097A-page 19
相关PDF资料 |
PDF描述 |
|---|---|
| DM320002 | BOARD EXPANSION PIC32 I/O |
| DM320003-2 | KIT EVAL PIC32 USB II STARTER |
| DM320003 | BOARD DEMO USB PIC32 OTG |
| DM320005 | BOARD EXPANSION FOR PIC32 KIT |
| DM320011 | BOARD AUDIO DEV FOR PIC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DM300023 | 功能描述:开发板和工具包 - PIC / DSPIC dsPICDEM SMPS Buck Demo Brd RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| DM300024 | 功能描述:开发板和工具包 - PIC / DSPIC dsPICDEM 1.1 GP RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| DM300027 | 功能描述:开发板和工具包 - PIC / DSPIC 16-bit Starter Demo Board RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| DM-3-000-K | 制造商:PacTec 功能描述:Case, Plastic; ABS; Black; 11.46 in.; 3.38 in.; 10.4 in.; UL 94-HB Rated 制造商:PacTec 功能描述:ENCLOSURE, DESKTOP, PLASTIC, BLACK; Enclosure Type:Desktop; Enclosure Material:Plastic; Body Color:Black; External Height - Imperial:3.38"; External Height - Metric:86mm; External Width - Imperial:10.4"; External Width - Metric:264mm;RoHS Compliant: Yes |
| DM-300-C | 制造商:Greenlee Textron Inc 功能描述:DMM 1000V RMS |
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