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UM0242 User manual USB Power Switch demonstrator kit Introduction The objective of this demonstrator is to display to the user the features and capabilities of the USB Power switches (ST204x and ST205x) developed by STMicroelectronics using a Windows® -based host software application and one of several USB low-speed microcontrollers from ST acting as a peripheral device. The host software and the ST7 source code provides a clear picture of the power switch capabilities. The USB communication between host and the device is done through a HID class based protocol developed specially for demonstration board applications . The demonstration board incorporates microcontroller, programmable voltage regulator, Mosfets, switches and various resistive networks. The onboard regulator can be configured to supply various voltages by selecting appropriate resistance from the resistive network present at the adjust pin of the regulator. Different voltages and loads can be selected from the PC software as well as through switches present on the board. LEDs are provided on the board to indicate the various combinations of input voltage and load applied to the power switch. The board has an ICC connector to program the microcontroller Flash memory. An external 12V charge pump is also provided on the board to allow the user to perform InApplication Programming (IAP) of the microcontroller embedded Flash program memory. Any type of real load (e.g. USB speakers) can be powered from this board by plugging in the connector present on the board. May 2006 Rev 1 1/17 www.st.com www.BDTIC.com/ST Contents UM0242 Contents 1 2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Running the USB power switch kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 USBPS GUI description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 Communication with the demonstration board . . . . . . . . . . . . . . . . . . . . . 11 2.4 Programming the MCU Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.5 Plugging of real load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.6 Demonstration board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 www.BDTIC.com/ST UM0242 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Power switch board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Enumeration result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 USBPS_GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Device database window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Sampling information window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Calibration Values window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3/17 www.BDTIC.com/ST List of tables UM0242 List of tables Table 1. Table 2. Table 3. Table 4. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Switches configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 LEDs configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4/17 www.BDTIC.com/ST UM0242 Getting started 1 Getting started 1.1 System requirements In order to use the USB Power Switch Demonstrator with the Windows® operating system, a recent version of Windows, such as Windows 98, Windows 2000 or Windows XP must be installed on the PC. The version of the Windows OS installed on your PC may be determined by clicking on the “System” icon in the Control Panel. 1.2 Package contents The USB Evaluation Kit includes the following items: ● Hardware content – ● ● 1.3 One USB Power Switch demonstration board Software content – PC executable software (USBPS_GUI) for using the demonstration board – PC executable software (DFUGUI) for upgrading firmware through USB using DFU feature. – ST7 firmware (C source code) for the ST72F62. Documentation – User Manual for using the Power Switch demonstrator kit. – ST7262 Datasheet. – USB power switches datasheets. – Usage document for using DFUGUI. Software installation Run the setup file to install USBPS_GUI and follow the on-screen prompts to complete the installation. 1.4 Hardware installation Figure 1 shows a photograph of the demonstration board with all the components usable on this board. The schematic of the demonstration board is given in Figure 7. 5/17 www.BDTIC.com/ST Getting started UM0242 Figure 1. Power switch board layout Charge Pump ICC Connector Regulator Microcontroller Power Switch MOSFETs Loads CON2 CON3 1.4.1 Power supply The microcontroller is directly powered by the USB Connector (bus-powered). While the rest of the circuit needs a 10V/3A supply which has to be plugged in the connectors of the board after inserting the USB cable. 6/17 www.BDTIC.com/ST UM0242 Running the USB power switch kit 2 Running the USB power switch kit 2.1 Introduction This USB Power Switch kit consists of two main parts: an USBPS_GUI running on PC and a Demonstration board. Communications between the PC and the ST7 board are done through different USB pipes: – Control IN and OUT during the enumeration with the bi-directional endpoint 0 – Interrupt IN from endpoint 1 for data transferred from ST7 to PC. – Interrupt OUT to the endpoint 2 for the data transferred from PC to ST7. Figure 2. Enumeration result By starting the USBPS_GUI on the PC, you get a graphical interface (Figure 3) for controlling the demonstration board. This PC software is used to issue various commands and to control data transfers between the PC and the ST7 peripheral. 2.2 USBPS GUI description 2.2.1 Main window The USBPS GUI enables the user to configure the parameters shown in Figure 3. 7/17 www.BDTIC.com/ST Running the USB power switch kit Figure 3. UM0242 USBPS_GUI Input parameters ● Device Select: Click the drop-down menu to select the correct board from the list of available devices. ● Load current: Select the correct load to apply at the switch output: 100mA, 500mA, 1A or 2A. Larger loads can be applied by changing the load resistance R37 with the required load on the demonstration board. ● Input voltage: Select the correct input voltage for the switch: 4.4V, 4.75, 5.0V or 5.25V. ● Under Voltage: Select the under voltage protection. When ON, a 1.2V supply is applied at the switch input. At this input supply level, the Power Switch output will be zero, displaying the cut off capability of the Power Switch at low input voltages. ● Short Circuit: Select ON to enable a short-circuit at the Power Switch output. A graph of short circuit current versus time will be plotted in a separate window. ● Power Switch: Select Enable or Disable option on the GUI to control the voltage on the Enable pin of the Power Switch. ● Plot Reaction: Select Turn ON/OFF to display in a separate window the plotting of a graph of the output rise time and fall time, respectively, of the Power Switch. 8/17 www.BDTIC.com/ST UM0242 Running the USB power switch kit Output parameters ● Input Voltage, Output Voltage and Load Current windows display the current parameter settings. ● Over Current: This LED is ON when a current larger than device rating is flowing through the device. Device status ● 2.2.2 Connected: This LED is ON when an HID device is connected to the Power Supply board via a USB cable. Device Database window The Device Database window (Figure 4) enables the user to register a new pin-compatible power switch device by entering the device name, maximum current range, short-circuit current and Enable signal polarity parameters. Figure 4. Device database window 9/17 www.BDTIC.com/ST Running the USB power switch kit 2.2.3 UM0242 Sampling Information window The Sampling Information window (Figure 5) enables the user to update the sampling time and number of samples parameters for short-circuits and to enable the display of graphs separately. Figure 5. 2.2.4 Sampling information window Calibration Values window The Calibration Values window (Figure 6) is used for changing the multiplication factors used for calibrating the ADC values. Figure 6. Calibration Values window 10/17 www.BDTIC.com/ST UM0242 Running the USB power switch kit 2.3 Communication with the demonstration board 2.3.1 PC software control of the demonstration board To use the USBPS GUI, select a particular device (i.e. Power Switch as on the demonstration board) from Device Select drop box. Selection of an incorrect Power Switch will lead to incorrect results. Note: If the correct device is not listed in the drop box, enter the required information in the Device Database window as described in Section 2.2.2: Device Database window. Use the various parameters described in Section 2.2: USBPS GUI description to look into the features of the USB Power Switch. 2.3.2 Manual control of the demonstration board This Power Switch Demonstration board can also work without the PC software. Different voltages and loads can be selected using switch S2 & S3 respectively. Pressing S3 again and again will increment the voltage in the above mentioned steps and after 5.25V under voltage (i.e. 1.2V) is selected. After under voltage the next state is 4.4V. Similarly load at the output can be varied using S2. In default state of the board, 5V is present at Power Switch input and 100 mA load at the output. 2.3.3 Display of demonstration board state Real time values of input voltage, output voltage of the Power Switch and its load current are incremented every second in the GUI display window. In case of over current through the switch, indication will be given on the GUI through over current LED. 2.4 Programming the MCU Flash memory 2.4.1 Programming through ICC To program the MCU through ICC, plug in the ICC cable and put jumper JP4 in 2-3 position as described in Table 1. In the firmware two S19 files are available one for sector0 (0xF0000xFFFF) and other for Sectors 1 and 2 (0xC000-0xEFFF). Program these files in the respective sectors. The board has been tested with the INDART kit. 2.4.2 Upgrading firmware through DFU Device firmware upgrade (DFU) is used to reprogram Sectors 1 and 2 through USB cable without reprogramming Sector 0. Use the DFUGUI to upgrade Sectors 1 and 2. Refer to help manual of ST7 DFUGUI for a complete description. 2.4.3 Entering DFU mode Press and hold the switch S3 and reset the board (by pressing S1). The board will now go into DFU mode. Now, Sectors 1 an 2 can be upgraded. To exit DFU mode, reset the board. 11/17 www.BDTIC.com/ST Running the USB power switch kit Table 1. UM0242 Jumper settings Jumper No. Jumper Location Jumper Setting This jumper should always be present on the board during normal operation. If reading of load current with multimeter is desired then only, jumper should be removed and ammeter should be inserted. JP1 Connector between o/p of power switch and load. JP2 Connector between adjust This jumper should not be present on the board else it pin of regulator and ground. will cause undervoltage situation. It is kept for future. JP3 Connector between ICCLK This jumper is useful only in ICC mode. Don't put this pin and OSC1 pin of jumper ON if the crystal is present. microcontroller JP4 Connetor Between 12V input and Vpp pin of the microcontroller. Table 2. It’s a 3 pin jumper and useful in ICC and DFU mode. Short its 2-3 pins in ICC mode and 1-2 pins in DFU mode. Through this jumper 12V is supplied to the Vpp pin of the MCU. Switches configuration Switch No. Table 3. SW1 Reset SW2 Load Switching SW3 Input voltage switching & entry in DFU mode LEDs configuration LED No 2.5 Switch Use LED Color Glowing Condition LED1 Red Over Current through Power Switch LED2 Green Presence of 4.4V at Power Switch input. LED3 Green Presence of 4.75V at Power Switch input. LED4 Green Presence of 5.0V at Power Switch input. LED5 Green Presence of 5.25V at Power Switch input. LED6 Red Under Voltage Condition LED7 Yellow 400mA Load LED LED8 Yellow 600mA Load LED LED9 Yellow 100mA Load LED LED10 Yellow 2A Load LED Plugging of real load Any type of USB real load can be powered from this board. First plug the USB cable into connector CON2 then plug the load into connector CON3. 12/17 www.BDTIC.com/ST www.BDTIC.com/ST A B C D USBVDD USBDM USBDP VSSA USBVDD2 USBDM-2 USBDP-2 VSSA 1 VCC VOUT USBDM-2 USBDP-2 VSSA USB-A-TYPE TO LOAD 1 2 3 4 CON3 USB-B-TYPE TO PC 1 2 3 4 CON2 USB-B-TYPE TO PC 1 2 3 4 1 2 3 4 C9 220nF C10 220nF LD6 LD5 LD4 LD3 LD2 330E R26 330E R25 330E R24 330E R23 330E R22 VPP PD1 PD0 4 V1 V2 V3 V4 V5 OSC1 OSC2 100nF C14 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 ST7262 U3 47k OSC1 SHDN GND Vout VCC ST662A C1C1+ C2C2+ U9 8 7 6 5 1.5k R1 PD5 C11 4.7uF C13 100nF 2 VCC GND JP3 USBVDD VDDA VSS VSSA GND ICCDATA PB6 ICCCLK PB5 VCC R2 Charge-pump Circuit V5 V4 V3 V2 V1 12MHz C8 33pF Y1 33pF C7 4.7uF/25V C1 2 JP4 2k2 R41 C12 4.7uF VCC 33 32 31 30 29 28 27 26 25 24 23 RESET 32 31 AIN2 AIN3 AIN4 AIN5 AIN6 25 PB0 RDI 2 4 6 8 10 HEADER 5X2 1 3 5 7 9 CON4 ICC 33 32 31 30 29 28 27 26 25 24 23 Q1 BC557 VPP VPP_ICC R42 10k 10k R20 40 25 16 14 4 VCC 10nF ICCDATA ICCCLK RESET VPP_ICC S1 C6 47k 47k 47k 47k 47k R7 R8 R9 R10 47k R6 47k R3 R4 VCC 3 S3 S2 U2-1 U2-2 U2-3 U2-4 U2-5 U2-6 U2-7 U2-8 VSS VCC 14 U2-3 16 17 ICCDATA ICCCLK PB4 PB3 TDO VPP PD1 PD0 4 V1 V2 V3 V4 V5 OSC1 OSC2 12V JP2 10uF/25V C5 C3 10uF/25V CON8 1 2 3 4 5 6 7 8 J5 CON11 1 2 3 4 5 6 7 8 9 10 11 HEATSINK U2-16 U2-15 U2-14 U2-13 U2-12 U2-11 U2-10 U2-9 CON8 8 7 6 5 4 3 2 1 J6 CON11 11 10 9 8 7 6 5 4 3 2 1 GND GND GND VCC GND GND GND GND VCC GND 4 5.1k R35 1k R35A D2 IN4148 3 J3 11 10 9 8 7 6 5 4 3 2 1 0 R34 10k R34A Vout CON11 RESET 32 31 AIN2 AIN3 AIN4 AIN5 AIN6 25 PB0 RDI PD2 PD3 PD4 PD5 40 39 VDDA USBVCC USBDP USBDM VSSA 4.7k J4 1k5 18k R32 R33 R32A 10uF/25V C2 Vin LM317T IN4148 J2 GND 2 U1 D1 4 CON11 1 2 3 4 5 6 7 8 9 10 11 J1 GND X2 VCC12V X1 HS1 POWER SWITCH DEMO 3 VR4 CON1 1 VR1 Adjust 1 VR3 PD2 PD3 PD4 PD5 40 39 VDDA USBVCC USBDP USBDM VSSA 2 1 VR5 44 43 42 41 40 39 38 37 36 35 34 44 43 42 41 40 39 38 37 36 35 34 12 13 14 15 16 17 18 19 20 21 22 12 13 14 15 16 17 18 19 20 21 22 VSS USBVDD 14 U2-3 16 17 ICCDATA ICCCLK PB4 PB3 TDO 2 1 10k 470E R50 R49 R48 R12 R47 R46 R45 R44 R43 R11 PD2 47k PB3 47k PB0 47k PB4 47k PB6 47k PB5 47k PD4 47k PD0 47k PD1 47k PD3 47k 10k R15 AIN5 R14 R13 Scale Size B U2-1 U2-2 U2-3 U2-4 U2-5 U2-6 U2-7 U2-8 16 15 14 13 12 11 10 9 U2-16 U2-15 U2-14 U2-13 U2-12 U2-11 U2-10 U2-9 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 D1 D1 D2 D2 D1 D1 D2 D2 D1 D1 D2 D2 JP1 LD7 LD9 10E/5W R39 50E/2W R38 330E R28 0.1E/5W R36 10k D1 D1 D2 D2 STS8DNH3LL S1 G1 S2 G2 5 FCSM No. USB_DEMO_SWITCH LD10 LD8 Sheet 330E R30 330E R27 0 of 0 1E/5W R37 5E/5W R40 6 1E/5W R19 R31 10k 330E DWG No. 47k GND 10k 10k R51 R52 10k R17 AIN3 R18 AIN4 10k 6 R16 U8 8 7 6 5 8 7 6 5 VR5 VR4 VR3 VR1 VOUT 47k VCC R53 10uF C4 R5 330E R21 R29 D1 D1 D2 D2 8 7 6 5 8 7 6 5 8 7 6 5 AIN2 LD1 STS8DNH3LL S1 G1 S2 G2 U7 STS8DNH3LL S1 G1 S2 G2 U6 STS8DNH3LL S1 G1 S2 G2 U5 STS8DNH3LL S1 G1 S2 G2 U4 Switching Circuit ST20XX GNDA OC1 IN1 OUT1 EN1 OUT2 EN2 OC2 GNDB OC3 IN2 OUT3 EN3 OUT4 EN4 OC4 Deepu Arora STMicroelectronics 1 2 3 4 5 6 7 8 U2 USB Power Switch 5 1 2 Rev 1 A B C D Figure 7. AIN6 2.6 1 2 3 UM0242 Running the USB power switch kit Demonstration board schematic Board schematic 13/17 Bill of materials UM0242 3 Bill of materials Table 4. Bill of materials Index 1 Qty Reference Value/Generic part number Package Manifacturer‘s ordering Manufacturer code/orderable part number 1 R1 1.5K SMD 0805 Any 2 20 R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R43, R44, R45, R46, R47, R48, R49, R50, R51 47K SMD 0805 Any 3 1 R13 470E SMD 0805 Any 4 11 R14, R15, R16, R17, R18, R19, R20, R42, R52, R53, R34A 10K SMD 0805 Any 5 10 R21, R22, R23, R24, R25, R26, R27, R28, R29, R30 330E SMD 0805 Any 6 1 R35A 1K SMD 0805 Any 7 1 R33 1K5 SMD 0805 Any 8 1 R32 4K7 SMD 0805 Any 9 1 R35 5K1 SMD 0805 Any 10 1 R32A 18K SMD 0805 Any 11 1 R34 0E SMD 0805 Any 12 1 R41 2K2 SMD 0805 Any 13 1 R36 0.1E, 5W Leaded RS Components 14 2 R31, R37 1E, 5W Leaded Any 15 1 R40 5E ,5W Leaded Any 16 1 R39 10E, 5W Leaded Any 17 1 R38 50E, 2 W Leaded Any 18 3 C1, C11, C12 4.7uF, 25V RB-.2/.4 Any 19 4 C2, C3, C4, C5 10uF, 25V RB-.2/.4 Any 20 1 C6 10nF SMD 0805 Any 21 2 C7, C8 33pF SMD 0805 Any 22 2 C9, C10 220nF Leaded Any 23 2 C13, C14 100nF SMD 0805 Any 24 4 LD2, LD3, LD4, LD5 Thru Hole LED 3mm -Green Any RS199-6378 14/17 www.BDTIC.com/ST UM0242 Table 4. Index Bill of materials Bill of materials (continued) Qty Reference Value/Generic part number Package Manifacturer‘s ordering Manufacturer code/orderable part number 25 4 LD7, LD8 ,LD9, LD10 Thru Hole LED 3mm -Yellow Any 26 2 LD1, LD6 Thru Hole LED 3mm -Red Any 27 1 U1 LM238 TO-3 ST SO-8 or SO-16 ST ST2042BDR, or ST2044BDR, or ST2052BDR, or ST2054BDR LM238K 28 1 U2 ST2042BDR, or ST2044BDR, or ST2052BDR, or ST2054BDR 29 1 U3 ST72F621J4 TQFP-44 ST ST72F621J4T1 30 5 U4, U5, U6, U7, U8 STS8DNH3LL SO-8 ST STS8DNH3LL 31 1 U9 ST662A SO-8 ST ST662ABD-TR 32 1 Q1 BC557 or BC558 TO-92A Any 33 2 D1, D2 IN4148 DO-35 Any 34 3 S1, S2, S3 Push Button Any 35 2 CON1, CON2 USB-B-TYPE USB-B Kycon KUSB-BS-1-N-BLK 36 1 CON3 USB-A-TYPE USB-A Kycon KUSB-AS-1-N-BLK 37 1 CON4 HEADER 5X2 IDC-10B Any 38 1 Y1 12MHz Crystal XTAL-3 Any 39 1 HS1 Heat Sink HS-TO3 Any 40 1 X1 VCC12V RS738-547 FARNELL 150-039 41 1 X2 GND RS738-547 FARNELL 150-040 42 4 J1, J2, J3, J4 CON11 SIP-11 Any 43 2 J5, J6 CON8 SIP-8 Any 44 3 JP1, JP2, JP3 CON2 SIP-2 Any 15/17 www.BDTIC.com/ST Revision history 4 UM0242 Revision history Revision history Date Revision 19-May-2006 1 Changes Initial release. 16/17 www.BDTIC.com/ST UM0242 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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