参数资料
| 型号： | DM300022 |
| 厂商： | Microchip Technology |
| 文件页数： | 22/56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
1.5
DETAILED DESCRIPTION OF OPERATION
1.5.1
Input Stage (Appendix A Sheet 1)
The input stage of the board consists of the following components:
? F1 – 1.25" x 0.25" 125 VDC 15A High Rupture Current Fuse - Note: only replace
with part of the same rating.
? C9, C10 – Film capacitors to aid in the suppression of supply borne transients and
to also provide a low impedance return path for any currents that flows from the
power device tabs to the heat-sink and enclosure due to capacitive coupling.
? V1 – A metal oxide varistor located across the incoming supply lines to suppress
high energy transients.
1.5.2
1.5.2.1
Input Power Stage (Appendix A Sheet 1)
SOFT-START PROTECTION
As is normal for a low voltage system, soft-start protection is not provided within the
unit. The NTC (NTC1) on the PCB is replaced by a wire link. When using a
current-limiting DC power supply, this will cause no problem as the inrush of current
on application of DC power, due to the DC bus capacitors, will be controlled. If using a
substantial battery supply, the user may need to provide some form of soft-start to
prevent the fuse blowing on power-up. If fitting a device to NTC1 on the PCB, the user
should carefully monitor the temperature of the PCB around it.
1.5.2.2
REVERSE VOLTAGE PROTECTION
In order to protect the unit from accidental reversal of the input voltage, a circuit has
been included which blocks the reverse voltage. Although a series diode could have
been used, this would have incurred a very significant amount of loss during normal
running. The circuit used is described below:
? Q9 – A 75V 13 m ? (cold) MOSFET of the same type used for the inverter. During
normal operation (correct polarity of input voltage), the MOSFET is turned on with
current flowing from source to drain. The voltage drop will be due to the resistance
of the MOSFET, rather than that of a diode. When reverse polarity is applied, Q9
is turned off and blocks the reverse voltage.
? D32, R6 and R58 – The gate drive components for Q9. During normal operation,
Q9 is turned on via R6 with D32 limiting the gate source voltage to 15V. On
application of reverse voltage, Q9 turns off with R59 being a gate source
pull-down.
1.5.3
1.5.3.1
Phase Inverter (Appendix A Sheet 2)
INTRODUCTION
The 3-phase inverter has three identical circuits, shown as R (RED), Y (YELLOW) and
B (BLUE). These are often referred to as inverter "legs". They invert the DC bus to a
variable AC output waveform by appropriate modulation of the switches. When a star
or delta connected three-phase motor is used, the electrical symmetry can be
exploited to provide bi-directional current and voltage with just three such legs. In this
way, both motoring and generating/braking operation can be used in either direction of
rotation, commonly called "4 Quadrant" control.
DS70097A-page 16
? 2003 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
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| 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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