Microchip Technology PAC1710 User Manual
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Microchip Technology PAC1710 User Manual

Microchip Technology PAC1710 User Manual

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PAC1710 and PAC1720
High-Side Current Sensors

Evaluation Board

User's Guide
 2015 Microchip Technology Inc.
DS50002367A

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Summary of Contents for Microchip Technology PAC1710

  • Page 1: Evaluation Board

    PAC1710 and PAC1720 High-Side Current Sensors Evaluation Board User’s Guide  2015 Microchip Technology Inc. DS50002367A...
  • Page 2 ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
  • Page 3 Object of Declaration: PAC17X0 High-Side Current Sensors Evaluation Board  2015 Microchip Technology Inc. DS50002367A-page 3...
  • Page 4 NOTES:  2015 Microchip Technology Inc. DS50002367A-page 4...

  • Page 5: Table Of Contents

    2.1.1 System Requirements ................15 2.1.2 Installing the Evaluation Board ..............15 Chapter 3. Hardware Description 3.1 Introduction ....................23 3.1.1 PAC1710 and PAC1720 ................23 3.1.2 Power Source .................... 23 3.2 USB-to-SMBus Bridge .................. 23 3.2.1 Direct SMBus Connect Option ..............23 3.3 LED Indicators ....................
  • Page 6 A.8 Board – Bottom Copper ................48 A.9 Board – Bottom Copper and Silk ..............49 A.10 Board – Bottom Silk ................... 50 Appendix B. Bill of Materials (BOM) ................51 Worldwide Sales and Service ..................54  2015 Microchip Technology Inc. DS50002367A-page 6...

  • Page 7: Preface

    – Shows the schematic and layout diagrams for the PAC17X0 High-Side Current Sensors Evaluation Board. • Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the PAC17X0 High-Side Current Sensors Evaluation Board.  2015 Microchip Technology Inc. DS50002367A-page 7...

  • Page 8: Conventions Used In This Guide

    Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site.  2015 Microchip Technology Inc. DS50002367A-page 8...

  • Page 9: Recommended Reading

    PAC1710/20 Data Sheet (DS20005386) This data sheet describes the operation and features of the PAC1710/20 devices which have a single and dual high-side current-sense monitor with power calculation. THE MICROCHIP WEB SITE Microchip provides online support via our web site at www.microchip.com.
  • Page 10 PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide NOTES:  2015 Microchip Technology Inc. DS50002367A-page 10...

  • Page 11: Chapter 1. Product Overview

    The evaluation board supports communication with both the PAC1710 and PAC1720 devices that are populated on the board. The SMBus address of the PAC1710 is set by R4 and the PAC1720 SMBus address is selectable with the J12 jumper.

  • Page 12: What Is The Pac17X0 High-Side Current Sensors Evaluation Board

    The user can perform the following operations using the Chip Manager application: • Viewing and changing register values • Saving settings of all registers, allowing for quick configuration at a later time • Graphing of any register  2015 Microchip Technology Inc. DS50002367A-page 12...

  • Page 13: What The Pac17X0 High-Side Current Sensors Evaluation Board Kit Contains

    WHAT THE PAC17X0 HIGH-SIDE CURRENT SENSORS EVALUATION BOARD KIT CONTAINS This PAC17X0 High-Side Current Sensors Evaluation Board kit includes: • PAC17X0 High-Side Current Sensors Evaluation Board (ADM00494) • Supplied USB-A Male to Mini USB-B Male Cable • Information Sheet  2015 Microchip Technology Inc. DS50002367A-page 13...
  • Page 14 PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide NOTES:  2015 Microchip Technology Inc. DS50002367A-page 14...

  • Page 15: Chapter 2. Installation And Operation

    Section 3.3 “LED Indicators”. 5. If the USB bridge driver has not previously been installed on the selected USB port, the Driver Software Installation window pops up, prompting for the driver install (see Figure 2-1).  2015 Microchip Technology Inc. DS50002367A-page 15...
  • Page 16 Driver Software Installation Window. 6. After the driver installation is complete, the initial setup screen for the Chip Manager application appears (see Figure 2-2). Click Next to start the installation. FIGURE 2-2: Application Install Window.  2015 Microchip Technology Inc. DS50002367A-page 16...
  • Page 17 FIGURE 2-3: License Agreement Dialog. 8. On the Installation Directory dialog, browse for the desired location or click Next to install in the default location (see Figure 2-4). FIGURE 2-4: Installation Directory Dialog.  2015 Microchip Technology Inc. DS50002367A-page 17...
  • Page 18 9. After the setup is complete, the MSXML Parser used by the Chip Manager software is installed, as shown in Figure 2-7. Once the setup completes successfully, press Finish to exit the install.  2015 Microchip Technology Inc. DS50002367A-page 18...
  • Page 19 Installation and Operation FIGURE 2-7: MSXML Parser Install Window. FIGURE 2-8: Installation Complete Dialog.  2015 Microchip Technology Inc. DS50002367A-page 19...
  • Page 20 ) on the desktop. The evaluation board software will initialize and the Microchip Chip Manager with the Quick Help screen appears (see Figure 2-9). FIGURE 2-9: Microchip Chip Manager – Quick Help Window.  2015 Microchip Technology Inc. DS50002367A-page 20...
  • Page 21 Figure 2-10. In the “Device” list, choose PAC17X0. The “Master Controller” drop-down list should highlight “USB SMBus Bridge”. Click OK to complete the device selection. PAC17x0 FIGURE 2-10: Select Device Window.  2015 Microchip Technology Inc. DS50002367A-page 21...
  • Page 22 Auto Refresh option is on. FIGURE 2-11: Chip Manager Register Groups. Devices supported with PAC17X0 are listed in Table 2-1. TABLE 2-1: PAC17X0 SUPPORTED DEVICES Address J12 State Device PAC1710 Installed PAC1720 Open PAC1720  2015 Microchip Technology Inc. DS50002367A-page 22...

  • Page 23: Chapter 3. Hardware Description

    The PAC1710 and PAC1720 devices are SMBus-compliant, high-side, bidirectional current-sense monitors in a 10-pin, 3 mm x 3 mm DFN package. Communications with the sensor are via the SMBus. For details regarding the PAC1710 and PAC1720, refer to the device data sheet.

  • Page 24: Led Indicators

    USB power is present Alert ALERT is not asserted ALERT is asserted Pulse SW4 pulse trigger SW4 pulse trigger is pressed is not pressed 10 Hz (Blinking) 10 Hz test square wave source is operating  2015 Microchip Technology Inc. DS50002367A-page 24...

  • Page 25: Jumper Settings

    FIGURE 3-2: Jumper Locations. This evaluation board has pin headers and jumper configurations to evaluate the features of the PAC1710 and PAC1720 devices. Jumper settings are described in Table 3-2.  2015 Microchip Technology Inc.
  • Page 26 40 mV range. Positions 3-4 are jumpered. Range Sel Section 3.6.1 “Steady-State Current 20 mV range. Positions 5-6 are jumpered. Source”. 10 mV range. Positions 7-8 are jumpered. Power jacks. See Section 3.7.2 “Load Connection”. SOURCE SOURCE SOURCE SOURCE  2015 Microchip Technology Inc. DS50002367A-page 26...

  • Page 27: Pac17X0 Test Points

    2- (yellow) SENSE- SENSE ALERT (white) ALERT ADDR_SEL (white) SMBus Address Select (at power-up) 10 Hz (white) Square Wave Current Output PULSE (white) Momentary Pulse (SW4 pushed) (white) Current Monitor with 2.5V/mA Sensitivity  2015 Microchip Technology Inc. DS50002367A-page 27...

  • Page 28: Demo Mode Setup And Operation

    DEMO MODE SETUP AND OPERATION Demo mode uses three on-board current sources to exercise and demonstrate the features of the PAC1710 and PAC1720 devices. Jumpers J3, J4, J8 and J9 are initially set for Demo mode (see Section 3.4 “Jumper Settings”).

  • Page 29: Hertz Current Source

    Rotary switch SW5 10 Hz Amp Adj injects a 10 Hz square wave signal into the current-sense measurement circuit. This function is provided to demonstrate the PAC1710 and PAC1720 devices’ ability to attenuate circuit noise. The steady-state current consumption for the rotary switch SW1 Steady-State settings, in conjunction...

  • Page 30: Pulse Current Source

    3.6.3 Pulse Current Source The pulse current source is provided to demonstrate the PAC1710 and PAC1720 devices’ ability to detect current spikes of varying amplitude and duration. The current source is activated using momentary switch SW4 Pulse Trigger. Rotary switch SW2...

  • Page 31: Sys Mode Setup And Operation

    SYS MODE SETUP AND OPERATION Sys mode uses external current sources, such as 12 V , to exercise and demonstrate the features of the PAC1710 and PAC1720. 3.7.1 Jumper Positions To use Sys mode, adjust jumpers J3, J4, J8 and J9 (see...

  • Page 32: Measurement Polarity

    1 and SOURCE J10 for V 2. For normal polarity measurements, jumpers are placed in SOURCE locations 1-3 and 2-4 (default). For measurement polarity reversal, jumpers are positioned in locations 1-2 and 3-4.  2015 Microchip Technology Inc. DS50002367A-page 32...

  • Page 33: Pac17X0 High-Side Current Sensors Evaluation Board User's Guide

    Figure 4-1. FIGURE 4-1: Chip Manager Help Screen. 4.1.1 Real-Time Register Graphs The Chip Manager software has the ability to plot register values in real time, up to a 4 Hz continuous rate.  2015 Microchip Technology Inc. DS50002367A-page 33...

  • Page 34: Selecting Registers To Plot

    Figure 4-3. The two windows can be rearranged independently. FIGURE 4-3: Register Plot Window. 3. To plot additional registers, go back to the Chip Manager Main window and repeat Step 1.  2015 Microchip Technology Inc. DS50002367A-page 34...

  • Page 35: Starting The Plots

    Chip Manager application. In this case, a warning message will display. It is recommended to choose a file name that reflects the data type when exporting the plot data.  2015 Microchip Technology Inc. DS50002367A-page 35...

  • Page 36: Microchip Technology Inc. Ds50002367A

    PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide NOTES:  2015 Microchip Technology Inc. DS50002367A-page 36...

  • Page 37: Chapter 5. Evaluation Board Demonstration

    2. Turn all rotary switches to the “0” position. 3. Go to the Control menu and start the plot. Figure 5-2 shows a plot of current with all switches off. FIGURE 5-2: All Current Sources Off Plot.  2015 Microchip Technology Inc. DS50002367A-page 37...
  • Page 38 FIGURE 5-3: Steady-State Current Plot. 5. After experimenting, you can stop the plot and export the data (see Section 4.1.4 “Exporting and Importing the Plot Data”) or leave it running for the next demonstration.  2015 Microchip Technology Inc. DS50002367A-page 38...

  • Page 39: Momentary Pulse Current Source (Amplitude) - Rotary Switch 2

    Momentary Pulse Amplitude Plot. 8. After experimenting, you can stop the plot and export the data (see Section 4.1.4 “Exporting and Importing the Plot Data”) or leave it running for the next demonstration.  2015 Microchip Technology Inc. DS50002367A-page 39...

  • Page 40: Momentary Pulse Current Source (Duration) - Rotary Switch 2

    Source”). The evaluation board with the Chip Manager tool does not demonstrate the PAC1710 and PAC1720 devices’ ability to attenuate circuit noise because the maxi- mum update rate of the Chip Manager is limited to 4 Hz. To see this feature, connect an external SMBus master to read the device quickly enough to properly see the results of the injected 4 Hz noise.

  • Page 41: Appendix A. Schematic And Layouts

    Board – Top Silk • Board – Top Copper and Silk • Board – Top Copper • Board – Bottom Copper • Board – Bottom Copper and Silk • Board – Bottom Silk  2015 Microchip Technology Inc. DS50002367A-page 41...

  • Page 42: Board - Schematic: Current Sensors

    JACK Power 2.1 mm Male heavy traces or solid cooper +3.3V SENSE J3_2 24.9R SOURCE 0603 + 5V_USB PAC1720 0.1 μF 1 μF 1 μF 0.1 μF PAC1710 Default: SENSE SENSE1+ SENSE+ 0.003R 2.21R 2.21R 10.5R Mode Select: SENSE SENSE1- SMCLK SMCLK SENSE-...

  • Page 43: Board - Schematic: Current Sources

    BOARD – SCHEMATIC: CURRENT SOURCES +3.3V steady-state consumption Idemo steady-state PULSE DUR PULSE +3.3V J16 possition 1-2/3-4/5-6/7-8 consumption SS AMP RANGE TRIGGER ADJUSTMENT 221k 0 mA/0 mA/0 mA/0 mA 52.3k MCP6074 1.9A 0603 ~6.6 mA/~3.3 mA/~1.6 mA/~0.8 mA 330k 52.3k 3.92k ~13.2 mA/~6.6 mA/~3.2 mA/~1.7 mA 10 μF...

  • Page 44: Board - Schematic: Mcp2221 Usb Bridge

    BOARD – SCHEMATIC: MCP2221 USB BRIDGE +5V_USB MCP1703/3.3V 3.3V 0603 3.3V 0.1 μF 3.92k USB_Power GREEN 0.1 μF 10 μF 10 μF ALERT USB_P USB_N 0603 0805 0603 0603 RESET 3.3V 0.47 μF 6.3V UART RX UART TX USB_OK SM_ACT 220R MCP2221 3.3V...

  • Page 45: Board - Top Silk

    Schematic and Layouts BOARD – TOP SILK  2015 Microchip Technology Inc. DS50002367A-page 45...

  • Page 46: Board - Top Copper And Silk

    PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide BOARD – TOP COPPER AND SILK  2015 Microchip Technology Inc. DS50002367A-page 46...

  • Page 47: Board - Top Copper

    Schematic and Layouts BOARD – TOP COPPER  2015 Microchip Technology Inc. DS50002367A-page 47...

  • Page 48: Board - Bottom Copper

    PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide BOARD – BOTTOM COPPER  2015 Microchip Technology Inc. DS50002367A-page 48...

  • Page 49: Board - Bottom Copper And Silk

    Schematic and Layouts BOARD – BOTTOM COPPER AND SILK  2015 Microchip Technology Inc. DS50002367A-page 49...

  • Page 50: A.10 Board - Bottom Silk

    PAC17X0 High-Side Current Sensors Evaluation Board User’s Guide A.10 BOARD – BOTTOM SILK  2015 Microchip Technology Inc. DS50002367A-page 50...

  • Page 51: Appendix B. Bill Of Materials (Bom)

    Mech. HW rubber pad, cylindrical, SJ61A11 PAD3, PAD4 D7.9, H5.3, black Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components.  2015 Microchip Technology Inc. DS50002367A-page 51...
  • Page 52 Resistor TKF, 221k, 1%, 1/10W, Panasonic - ECG ERJ-3EKF2213V SMD, 0603 Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components.  2015 Microchip Technology Inc. DS50002367A-page 52...
  • Page 53 Microchip Analog LDO, 3.3V, Microchip Technology Inc. MCP1703-3302E/DB MCP1703T-3302E/DB, SOT-223-3 Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components.  2015 Microchip Technology Inc. DS50002367A-page 53...

  • Page 54: Worldwide Sales And Service

    Tel: 886-2-2508-8600 China - Xian Tel: 631-435-6000 Tel: 86-29-8833-7252 Fax: 886-2-2508-0102 San Jose, CA Fax: 86-29-8833-7256 Thailand - Bangkok Tel: 408-735-9110 Tel: 66-2-694-1351 Canada - Toronto Fax: 66-2-694-1350 Tel: 905-673-0699 Fax: 905-673-6509 07/14/15  2015 Microchip Technology Inc. DS50002367A-page 54...

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