参数资料
| 型号： | DM300022 |
| 厂商： | Microchip Technology |
| 文件页数： | 24/56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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dsPICDEM? MC1L 3-Phase Low Voltage Power Module
FIGURE 1-5:
BOOTSTRAP SUPPLY
R51
D28
15V
C17
Bootstrap
Supply
R38
Q4
R4
? R33, D21, R39 and R38 – These components aid in the correct control of the gate
of the high side power device. The same circuit is repeated for the low side switch
using R54, D27, R57 and R58. Generally speaking, the larger value of gate
resistance used, the slower the device switches. Slower switching reduces
over/undershoots and consequently EMI, but increases switching loss and hence
device junction temperature. Turning the device on uses R39 and R38. Turning
the device off uses D21+R33 in parallel with R39 and R38. In this way, different
turn on and turn off resistance can be used to optimize switching performance.
? D31 – This is a high voltage clamping diode located directly adjacent to the IC. It
is necessary to ensure correct operation of the IC during extreme transients that
can occur during a FAULT. In combination with R38 and R53, it ensures Pin 6 of
U22 never goes more than 5V negative with respect to Pin 2.
? R27 and R26 – These resistors form a passive Gate Source pull-down to ensure
the MOSFETs stay off if the low voltage power supplies are not present.
1.5.4
Brake Chopper (Appendix A Sheet 1)
Clearly, if the motor is used as a brake or generator, any average power that flows
back from the inverter must have somewhere to go. As most DC supplies, with the
exception of batteries, will not sink current, a circuit for dissipating excess returned
power is provided. The most common form of brake chopper has been implemented
and is described below:
? Q10 – A 75V N-Channel MOSFET transistor of the same type as used for the
inverter. Apart from acoustic noise reasons, there is no reason to modulate the
device at high frequency. As the tab of the device is not isolated, a thermally
conductive insulator is used.
? D3 – A 8A 200V diode required to freewheel the current around the resistor due to
it's inductance. As the tab of the device is not isolated, a thermally conductive
insulator is used.
? R9 – A 3W 5 mW shunt resistor through which the low side switch and diode
returns to the -DC bus. The shunt is used for FAULT protection and (optionally) for
an alternative feedback signal - see Section 1.2.7 “FAULT Protection” and
? U23 – Microchip TC1412N gate drive IC. This contains a low resistance comple-
mentary push-pull MOSFET pair and input circuitry suitable for interfacing to a
wide range of input voltages. It has a small footprint allowing it to be located
physically close to the transistor, allowing a low inductance gate circuit layout.
Note that the full current drive capability of the TC1412N is not necessarily
required, as high frequency modulation is not essential for a brake chopper. A less
expensive TC1410N or TC1411N could be used.
DS70097A-page 18
? 2003 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
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| 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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