参数资料
| 型号： | DM300022 |
| 厂商： | Microchip Technology |
| 文件页数： | 31/56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
1.5.8.3
LOW VOLTAGE POWER SUPPLIES (APPENDIX A SHEET 5 AND 8)
The requirement for operation over a wide range of input voltages resulted in using
the +5V supply coming from the control board as the power source for all the low
voltage power supplies. This was true for both the isolated and live sides of the
system. The power supply circuitry on the live side is described below:
? U18 – An isolating 1W unregulated DC-DC converter with 5V input and 15V
(nominal) output. The +15V supply is used for the gate drive of the power devices
and the comparators on the live side of the isolation barrier.
? L4 and C83 – A filter to reduce the reflected ripple on the +5V supply from the
control board caused by the DC-DC converter.
? L3 and C77 – A filter to reduce the magnitude of the ripple on the live +15V
supply.
? U5 – A 5V linear regulator for the live control circuit supplies.
? D4 – A 1A diode to protect U5 against reverse bias during power-down.
? R61 – A 0R resistor linking the low voltage power supply star point to the -DC bus.
1.5.9
1.5.9.1
FAULT Protection (Appendix A Sheets 4, 5 and 6)
INTRODUCTION
Given the development nature of the system, robust independent FAULT protection is
provided on the power board rather than relying on software intervention. Five
different fault categories are used to indicate a FAULT to the user. Four of the fault
categories are detected on the live side. All FAULTs are latched and automatically
disable all firing commands. In a commercial application using the dsPIC device,
much of the hardware described below may be eliminated. In particular, the latches
are not required as the Output Compare and Motor Control PWM modules both have
dedicated fault inputs that can be configured to shutdown PWM outputs to their
inactive state.
The operation of the fault action is described below:
? D35-D38 and R114 – These form an active high wire OR of all four (live) FAULT
signals. R114 provides a passive pull-down during normal operation. The resulting
FAULT signal is used to directly shutdown the inverter gate drive ICs via their
shutdown logic input.
? R113, Q13, R110, D34, and Q14 – These components act to shutdown the brake
chopper during a FAULT. Q14 must be on for the detector stage of their
optocouplers to be powered. Under normal conditions, D34 and R110 provide the
base current for Q14. If the FAULT line is asserted, causing Q13 to turn on, or if
the +15V supply drops below approximately 10V, then Q14 turns off.
? U15 and R151 – If FAULT is asserted, current flows via R151 to cause the
(open-collector) output of U15 to turn on. This indicates back to the isolated side
that a FAULT has occurred on the live side.
? R176 and Q15 – If a Hall over-current is detected on the isolated side, the base
current for Q15 that normally flows via R176 is removed. As all the firing
command optocoupler emitters return via Q15, when Q15 is off, no firing can take
place.
? D43, D44 and R172 – These form an active low wire OR of the isolated and live
fault indications for feedback to the dsPIC device.
? 2003 Microchip Technology Inc.
DS70097A-page 25
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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