参数资料
| 型号： | DM300022 |
| 厂商： | Microchip Technology |
| 文件页数： | 32/56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
1.5.9.2
INVERTER SHUNT OVER-CURRENT
The feedback signals from the inverter leg shunts and the bus current signal derived
from them (see Section 1.5.6.2 “Inverter Leg Shunt Resistor Feedback” and
current trips. Note that the shunts will see "shoot-through" events which bypass the
Hall current sensors. The circuitry used to implement this is described below:
? U25 – A quad package comparator used for the over current threshold compari-
sons. Each comparator has a small amount of hysteresis (formed by R119 and
R120 for example) to ensure no output chattering occurs. Note that the inverter
leg shunts are compared for positive current, which is when the current is flowing
in a switch. The bus shunt is compared for a negative value to protect against
faults during braking/generating. R109 forms the pull-up for the open collector
outputs of U25. A small amount of filtering is used (e.g., R118, C45) to prevent
spikes on the shunt signals causing false trips.
? U27-B – A remaining op amp package used to generate the HIGH_REF (+4.5V)
from the Microchip MCP1525 2v5 reference.
? U26 (A and B) – Two, two-input NAND gates configured as a SET dominant SR
flip-flop. The SET dominance is important to ensure correct fault action even if the
RESET input is active.
? D5, R202 – An LED and its associated current limiting resistor for the visual
indication of the FAULT.
1.5.9.3
DC BUS OVER-VOLTAGE
tion. The threshold is set at approximately 59V in order to protect the power devices
Shunt Over-current” is used.
1.5.9.4
BRAKE OVER-CURRENT
The feedback signal derived from the brake chopper shunt is used to detect an
over-current. The threshold is set at 24.5 A. The circuitry used to implement the trip is
1.5.9.5
HEAT SINK OVER-TEMPERATURE
To protect the power devices from thermal overload, a heat sink temperature trip is
included. The trip temperature is set at nominal value of 65°C (150F). The circuitry
used to implement this is described below:
? U1 – A Microchip TC622EAT temperature trip IC. This IC only requires an external
resistor (R34) to set the nominal trip temperature. As the version chosen is pack-
aged in a TO220, this is easily mounted along with the other power devices to the
heat sink. This ensures excellent thermal coupling. As the tab of the device is not
isolated, a thermally conductive insulator is used.
? R116 and C42 – These filter the output of U1 to prevent false tripping due to
noise.
DS70097A-page 26
? 2003 Microchip Technology Inc.
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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