DEMO MANUAL DC2022A LTC2975 4-Channel Power Supply System Featuring the Power System Manager with Input Energy Accumulation Description The DC2022A is a demonstration system that showcases the LTC®2975, a 4-channel I2C/SMBus/PMBus power system manager with EEPROM. The LTC2975 monitors and controls four power supply rails. The LTC2975 also monitors input current and input voltage, which are used to calculate input power and accumulate energy. The DC2022A demonstrates the ability of the LTC2975 to sequence, trim, margin, supervise, monitor, and log faults for four power supplies. Each power supply channel’s output voltage is monitored and the LTC2975 monitors its own internal die temperature. The DC2022A is a single circuit board that contains four independent power supply rails. The board employs four LTC3405A 300mA switch-mode regulators, which are configured to be controlled by the LTC2975. The DC2022A demo board provides a sophisticated 4-channel digitally programmable power supply system. The rail voltages are programmable within the trim range shown in the Performance Summary table. This demonstration system is supported by the LTpowerPlay™ graphical user interface (GUI) which enables complete control of all the features of the device. Together, the LTpowerPlay software and DC2022A hardware system create a powerful development environment for designing and testing configuration settings of the LTC2975. These settings can be stored in the device’s internal EEPROM or in a file. This file can later be used to order pre-programmed devices or to program devices in a production environment. The software displays all of the configuration settings and real time measurements from the power system management IC. Telemetry allows easy access and decoding of the fault log created by the LTC2975. The board comes pre-programmed with the EEPROM values appropriate for the four power supply rails on the DC2022A. Just plug and play! Multiple DC2022A boards can be cascaded together to form a high channel count power supply (see the Multi-Board Arrays section). This cascaded configuration demonstrates features of the LTC Power System Management ICs which enable timing and fault information to be shared across multiple power system management ICs. The user can configure up to eight DC2022A boards, thereby controlling up to 32 separate power supply rails. Larger board arrays can be built using programmable I2C base addresses or bus segmentation. The DC2022A demo board can be powered by an external power supply, such as a +12VDC supply. Communication with the software is provided through the DC1613 USB-toI2C/SMBus/PMBus Controller. The following is a checklist of items which can be obtained from the LTC website or LTC Field Sales. USB-to-I2C/SMBus/PMBus Controller (DC1613) n LTpowerPlay Software n Design files for this circuit board are available at http://www.linear.com/demo/DC2022A L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. dc2022af 1 DEMO MANUAL DC2022A Features Sequence, Trim, Margin, and Supervise Four Power Supplies n Manage Faults, Monitor Telemetry, and Create Fault Logs n Supports Multi-Channel Fault Management n Automatic Fault Logging to Internal EEPROM n Operates Autonomously without Additional SW n Telemetry Reads Back VIN, VOUT, and Temperature PMBus Compliant Command Set n Supported by LTpowerPlay GUI n Margin or Trim Supplies to 0.25% Accuracy n Four IOUT and One IIN Monitor n n 4-Channel Time-Based Output Sequencer n I2C/SMBus Serial Interface n Powered from 6V to 14V n Input Power Measurement and Energy Accumulation n LTC2975 Available in 64-Lead QFN Package n Fast OV/UV Supervisors per Channel n Performance Summary over full operating temperature range. Specifications are at TA = 25°C. Common characteristics specifications valid POWER SUPPLY CHANNEL CH(0:3) Manager/Controller LTC2975 Nominal Untrimmed Output Voltages 1.5V, 1.8V, 2.5V, 3.3V Rated Output Current 0.3A Default Margin Range ±5% Output Trim Range (VFS_VDAC = 1.38V) +15%/–11% Temperature ±1°C Internal Common Characteristics PARAMETER CONDITIONS Supply Input Voltage Range 6 ADC Total Unadjusted Error VIN_ADC ≥ 1V ADC Voltage Sensing Input Range Differential Voltage: VIN_ADC = (VSENSEP[n] – VSENSEM[n]) 2 MIN 0 TYP MAX UNITS 14 V ±0.25 % 6 V dc2022af DEMO MANUAL DC2022A Glossary of Terms The following list contain terms used throughout the document. Channel – The collection of functions that monitor, supervise, and trim a given power supply rail. EEPROM – Non-volatile memory (NVM) storage used to retain data after power is removed. Margin – Term used typically in board level testing that increases/decreases the output voltage to look for sensitivity/marginality problems. Monitor – The act of measuring voltage, current, and temperature readings. NVM – Non-volatile memory, see EEPROM. PMBus – An industry standard power-management protocol with a fully defined command language that facilitates communication with power converters and other devices in a power system. Rail – The final output voltage that the power supply controller manages. Supervise – The act of quickly responding (warning or faulting) to a voltage, current, temperature condition that is compared to pre-programmed values. Trim – The act of adjusting the final output voltage. A servo loop is typically used to trim the voltage. dc2022af 3 DEMO MANUAL DC2022A LTpowerPlay GUI Software LTpowerPlay is a powerful Windows-based development environment that supports Linear Technology power system management ICs with EEPROM, including the LTC2975 4-channel PMBus power system manager. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multi-chip configuration file that can be saved and re-loaded at a later time. LTpowerPlay provides unprecedented system level diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power manage- ment scheme in a system or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613 I2C/SMBus/PMBus Controller to communicate with one of many potential targets, including the DC2022A demo system or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from: http://www.linear.com/ltpowerplay To access technical support documents for LTC Power System Management Products visit "Help, View Online help" on the LTpowerPlay menu. Figure 1. Screenshot of the LTpowerPlay GUI 4 dc2022af DEMO MANUAL DC2022A Quick Start Procedure The following procedure describes how to set up a DC2022A demo system. 6.Launch the LTpowerPlay GUI. 1.Download and install the LTpowerPlay GUI: www.linear.com/ltpowerplay a. The GUI automatically identifies the DC2022A and builds a system tree for each power manager. The system tree on the left hand side will look as shown below. 2.Remove the board from the ESD protective bag and place it on a level surface. Connect the DC1613 I2C/ SMBus/PMBus Controller to the DC2022A board using the 12-pin ribbon cable. Note: For multiple board arrays, the GUI automatically ensures each device has a unique address. In this scenario, it is recommended at this point to store these addresses to NVM (EEPROM) by clicking the RAM to 3.Confirm that the CONTROL switch is set to the RUN position. NVM icon in the toolbar. 4.Plug the USB-to-I2C/SMBus/PMBus Controller into a USB port on your PC. The board should power up with all power good LEDs and 5V LED illuminated green. The USB-to-I2C/SMBus/PMBus Controller supplies ~100mA of current which should be sufficient for a single demo board. 5.If multiple boards are being powered, connect a +12VDC power supply with > 0.5A capacity to the VIN input jack of the DC2022A. Figure 2. Connecting DC2022A Board and the DC1613 I2C/SMBus/PMBus Controller dc2022af 5 DEMO MANUAL DC2022A Quick Start Procedure b.A green message box will be displayed momentarily in the lower left hand corner confirming that the DC2022A is communicating. 7.The CONTROL switch is configured to control all 4 channels. Slide the switch to RUN to enable, OFF to disable all channels. For multiple board arrays, the CONTROL switch is wired to a signal that is common across all boards. All CONTROL switches must be set to the RUN position to enable all boards. Loading a DC2022A Configuration (*.proj) File with the GUI 1.In the upper left hand corner of the GUI, File > Open > browse to your *.proj file. This will load the file into the GUI. 2.Click on the Go Online icon c. Save the demo board configuration to a (*.proj) file by clicking the "Save" icon. This creates a backup file. Name it whatever you want. . This loads the configuration into PC->RAM icon the working RAM of the LTC2975. 3.To store the configuration to NVM (EEPROM), click on the RAM->NVM icon 6 , then click on the . dc2022af DEMO MANUAL DC2022A Details - Top Side Figure 3. DC2022A Top Side Details dc2022af 7 DEMO MANUAL DC2022A Common Demo Board Operations Margin All Rails The LTC2975 power manager on the DC2022A not only monitors each of the four outputs but can margin the outputs either high or low. Margining is the operation that moves a rail either up or down for testing purposes. It allows a system to be fully characterized over supply limits without the use of external hardware or resources. The GUI provides an easy way to margin all rails high or all low by clicking one of four buttons. To invoke the margining in the toolbar. The dialog, click the GroupOp icon buttons labeled “ignore faults” will margin without creating a fault even if the fault limits are exceeded. A look at the telemetry window shows the effect of the margin high or margin low operation. The following screen shot shows all rails going from nominal setpoints to margin high, margin low, and back to nominal voltages. The LTC2975 has a multiplexed ADC that is used to provide voltage, current, and temperature readback values. The telemetry plot in the GUI is similar to a multi-channel oscilloscope which is capable of displaying any parameter that is displayed in the telemetry window. Due to the nature of a multiplexed ADC converter, it has an associated ADC loop time. The total ADC loop time (~100ms to 160ms) for a given channel is dependent on the device’s configuration. Creating a Fault There is a pushbutton on the DC2022A board that is used to force a fault and demonstrate the demo board’s ability to detect it and respond according to the configuration. When depressed, the pushbutton creates a fault (short to ground) on channel 3, the 3.3V output (GUI channel U0:3). The user should see all outputs power off, the fault LED momentarily illuminate, the alert LED illuminate continuously, and all rails sequence back on after a retry period. The user may also short any power supply output indefinitely. This is a good way to induce UV faults and shows that a shorted channel will not be damaged. Use a jumper wire or a coin to short any output. Clearing a Fault in the To clear a fault, the user may click the CF icon GUI or simply push the RESET pushbutton on the demo board. In both cases, the red (+) on the CF icon and alert LED on the board will be cleared. You will notice that all rails are automatically re-enabled after a programmable retry period. The alert LED may be cleared by clicking the 8 dc2022af DEMO MANUAL DC2022A Common Demo Board Operations clear faults (CF) icon in the GUI. After clearing faults, the system tree may remain yellow if any non-volatile fault logs are present. For further information, see the Working with the Fault Log section. Resetting the DC2022A A reset pushbutton is provided on the board. To reset all devices on the DC2022A board and reload the EEPROM contents into operating memory (RAM), press RESET (SW1) on the DC2022A. DC2022A LEDs Each individual channel on DC2022A also has its own green power good LED (CH0 through CH3). When USB power (DC1613 Controller) or external power (6V to 14V jack) is applied, the +5V green LED will illuminate, indicating that the LTC2975 power system manager is powered. The red LEDs will illuminate when an alert or a fault has occurred. Sequencing Output Channels The LTC2975 has been pre-configured with different TON_DELAY values for each channel. The TON_DELAY parameter is applied to each device relative to the respective CONTROL pin. When multiple demo boards are connected together, all CONTROL pins are wire OR’d. Therefore the TON delays are enforced relative to one edge. The same applies to TOFF_DELAY values. When the CONTROL switch is set to the OFF position, all rails will power down sequentially based on each of the device’s TOFF_DELAY values. Figure 4 shows an oscilloscope screen capture of three output rails sequencing up and down in response to the CONTROL pin. Each channel has an LED which visually indicates if the channel has power. When the CONTROL pin is switched on and off, you will observe the relative on/off timing of the 4 channels. For the LTC2975, the TON_DELAY and TOFF_DELAY values are limited to 655ms. CONTROL CH2, 2.5V CH1, 1.8V CH0, 1.5V Figure 4. Sequencing Output Channels with DC2022A Using TON_DELAY and TOFF_DELAY Figure 5. TON_DELAY Configuration Figure 6. TOFF_DELAY Configuration dc2022af 9 DEMO MANUAL DC2022A Common Demo Board Operations “Why Am I Off?” Tool Use the “Why am I Off?” tool in the LTpowerPlay GUI to diagnose the reason a power supply channel is turned off. The tool can be located in the top right corner of the GUI, above the “Register Information” tab. Hover your cursor over this tab to show the tool. Figure 7. "Why Am I Off” Tool in the LTpowerPlay GUI Advanced Demo Board Operations What Is a Fault Log? A fault log is a non-volatile record of the power system leading up to the time of fault. It holds the most recent monitored values (uptime, voltage, current, temperature) that can be analyzed to help determine the cause of the fault. It is a powerful diagnostic feature of the LTC2975 on the DC2022A demo board. Create a Fault Log To create a fault log, you must create a fault, as described in the Creating a Fault section. If multiple boards are configured, select the appropriate device in the system tree by clicking on the appropriate LTC2975 chip. We will proceed to work with the fault log. Working with the Fault Log Once a fault has occurred, the fault log (FL) icon will show a red (+) sign on it, indicating that the GUI has detected a fault log in the device. Clicking the icon will bring up a dialog box. Note that it is context sensitive. If 10 multiple DC2022A boards are connected, be sure that the desired device is selected in the system tree. Notice that the checkbox “Log to EEPROM on Fault” is checked. Once a fault occurs, the device will automatically write the fault log data to EEPROM (NVM). At this point, the log is locked and will not change until it is cleared by the user. To read the EEPROM log data, first click the “EEPROM to RAM” button. At this point the RAM Log is locked and not updated even though the telemetry readings continue. Click the “Read NVM Log” button. The log data will appear in the text box below. dc2022af DEMO MANUAL DC2022A Advanced Demo Board Operations The log contains timestamp, up-time, channel voltage readings, an input voltage reading, an on-chip temperature reading, etc. There will be a number of loops; each loop contains data obtained in one ADC loop time with the most recent ADC loop data on top and the oldest data at the bottom of the log. The up-time indicates, at the time of fault, the amount of time the device had been powered up or time since the previous reset. In this case, the fault log will show that channel U0:7 faulted due to a VOUT_UV_FAULT condition. On the previous telemetry loop, the channel voltage reading was a nominal value (3.3V). To clear the fault log, click the “Clear/Rearm EEPROM Log” button. This allows the selected device to be ready for a new fault event. To clear all faults, click the clear faults (CF) icon. dc2022af 11 DEMO MANUAL DC2022A Advanced Demo Board Operations Fault Sharing Setup in the GUI Fault sharing provides a means of propagating a fault detected by a power manager to other power managers via FAULT pins. Use the Fault Sharing Setup Tool to configure the fault sharing in the GUI. Select the LTC2975 in the system tree. Go to Utilities > Fault Sharing Diagram. For more details on this topic, please refer to the Fault Management section in the data sheet. The fault sharing dialog will appear as shown in Figure 8. All Response and all Propagate switches are closed by default. In this configuration, a fault on a channel will shut down all LTC2975 channels, and a fault on any given channel will propagate to all channels on the DC2022A demo board since the fault pins are tied together. NOTE: All FAULT pins of the LTC2975 are tied together on the DC2022A demo board. These pins are open drain and have a common pull-up resistor to provide a logic high level (inactive). All FAULT pins are active low. There are two types of actions to fault conditions: How a channel responds to another channel’s fault and whether a particular channel propagates its fault to other channels. FAULT pins are bi-directional, meaning the device may drive its fault pin low (output) or may respond to the fault pin when another device drives it low (input). Because all fault pins are wire OR’d on the DC2022A, this hardware configuration allows one to program each device’s fault settings on a channel-by-channel basis. By default, the LTC2975 is configured to shut down its channels if other devices fault and to propagate its own fault via the FAULT pins. A fault on these channels will cause only that channel to fault off. You can think of the response switches as “shut this channel down when another channel faults,” and the propagate switches as “drive a fault pin to broadcast to other channels that this channel faulted." Figure 8. Fault Sharing Utility in LTpowerPlay GUI 12 dc2022af DEMO MANUAL DC2022A Advanced Demo Board Operations Fault Configuration Example Let’s explore two different examples. Suppose we do not want channel U0:0 (CH0 1.5V rail) to propagate its fault to the other channels when it faults. And suppose we do not want channel U0:1 (CH1 1.8V rail) to shut down in response to another channel’s fault. We can configure the switches as shown in Figure 9. Simply click the switches to open/close. Click OK to close the dialog box. Click the PC->RAM icon to write the changes to the DC2022A. We can now create a fault on U0:0 (CH0) by shorting the output to ground. You may use a coin or a jumper to temporarily connect CH0 to the GND turret. You will notice that the channel shuts off but the other channels remain powered up because its fault is not propagated to the other channels. After the retry period, channel U0:0 (CH0) will power back up. We can now observe the effect of changing the response setting on U0:1 (CH1). If you short U0:3 (CH3 3.3V rail) to ground, notice that all rails shut down except U0:1 (CH1). This is an example of a keep-alive channel that remains powered up independent of faults to other channels. Energy Metering In the LTC Power System Manager family, the LTC2975 employs a new feature: high-side current sensing of the input power supply. This feature allows the manager to measure input supply current. The manager also measures Figure 9. Updated Fault Sharing Configuration dc2022af 13 DEMO MANUAL DC2022A Advanced Demo Board Operations input supply voltage and is therefore able to report input power as well. Since energy is the product of power and time, accumulated energy is provided based on the manager’s internal time base. The meter displayed in the upper right hand corner of the GUI provides a number of bits of information. The needle is a real-time indicator of input power and the smaller 5 dials show the total accumulated energy similar to a home electricity meter. The DC2022A demo board does not have power supplies that are capable of high current. However, conceptually the LTC2975 is able to monitor and measure an entire large power system with ease. LTpowerPlay offers a simple and easy to understand interface that brings together input and output current, voltage, power, and energy readings. channels by switching the RUN switch to off. You will notice that the slope has changed. The accumulated energy rate is the slope. Energy is still being consumed to power the LTC4415 power switch and the LTC2975 power manager. Note that the input current has changed from about 40mA down to 17mA as seen in the READ_IIN register. The MFR_EIN_WATTS register displays the input power that is being drawn. This register is the product of the READ_VIN and READ_IIN values. When all the channels are powered up, the input current is about 40mA. Since the input voltage is 5V, the input power is 5V•40mA or 200mW. You can confirm this by clicking these three registers one by one and view the telemetry window. The MFR_EIN and MFR_EIN_TIME registers may be reset by writing the MFR_EIN_CONFIG register. You may also view the input current, input voltage, input power, and input energy in numeric format. These appear in the telemetry portion of the GUI. The MFR_EIN register holds the accumulated energy value in milliJoules. There is also a total time that the energy accumulator has been active and is shown as the MFR_EIN_TIME register. The GUI will automatically update the displayed multiplier as the units go from mJ to J to kJ. The DC2022A board provides power to the LTC2975 manager via a 5V supply, whether power comes from the USB ribbon cable or from the 6V to 14V power jack. See Figure 10 for a simplified block diagram. To demonstrate the meter readings and register values, first select the MFR_EIN register to display the energy in the telemetry window (GUI’s lower right). Turn off all 14 dc2022af DEMO MANUAL DC2022A Advanced Demo Board Operations POWER JACK 6 – 14V 5V SWITCH REG (LTC3604) +5V 50mΩ POWER SWITCH (LTC4415) VDD5 +5V from USB +3.3V RUN SWITCH IIN_SNSM SM BUS IIN_SNSP VPWR LTC2975 4-‐CH POWER SYSTEM MANAGER CONTROL DC/DC (LTC3405) LOAD DC/DC (LTC3405) LOAD DC/DC (LTC3405) LOAD DC/DC (LTC3405) LOAD Figure 10. DC2022A Simplified Block Diagram dc2022af 15 DEMO MANUAL DC2022A Setup Procedure for Multiboard Arrays Up to eight DC2022A boards can be cascaded to control up to 32 independent power supplies. The number of boards is limited by an I/O expander chip that has three address pins, allowing eight different combinations. This setup demonstrates the coordinated fault responses and accurate time base shared across multiple power system managers. Procedure 1.Stack the boards side-by-side by plugging JP1 of one board into JP2 of another DC2022A board. 2.Ensure different slave address settings for each of the boards. The address of each DC2022A board is set by the DIP switch JP1 on the backside of the board. The setting must be unique for each board in the array. 3.Plug in the 12V VIN power into one of the boards as shown in Figure 11. Only one 12V power source is allowed. 4.The USB-to-I 2 C/SMBus/PMBus Controller may be plugged into any board. If no DC2022A boards show up in the GUI, click the magnifying glass icon to enumerate the I2C bus and find the addresses of the parts. Go to step #2 to ensure that each board has a unique DIP switch setting. 5.Since the individual CONTROL lines are connected across the boards (CTRL is a common signal across all boards in the array), make sure that all CONTROL switches are set to the RUN position. 6.Re-launch LTpowerPlay. After launching, LTpowerPlay will enumerate the entire board array and build a representative system tree and read all hardware settings into the GUI. ATTENTION: Once the GUI has launched, click the RAM->NVM button in the toolbar to ensure that the slave addresses are retained after a power off or reset. Otherwise you may lose communication with the slaves after a power cycle or reset event. Figure 11. Array of Multiple DC2022A Demo Boards 16 dc2022af DEMO MANUAL DC2022A Setup Procedure for Multiboard Arrays Ensuring Slave Addresses Do Not Conflict There is a small DIP switch on the backside of the DC2022A. It is used to set the slave address of an I/O expander which allows the addition of multiple boards to a setup. The I/O expander has a base address of 0x20. The DIP switch settings set the offset. The three switches that may be changed are labeled A0, A1, A2. Examples below set the boards to address 0x20 and 0x27. Figure 12. DIP Switch Set to All 0's Figure 13. DIP Switch Set to All 1's dc2022af 17 DEMO MANUAL DC2022A DC2022A Details - Top Table 1. DC2022A - Default Switch Configuration (Default Position Shown in Gray) REFERENCE DESIGNATOR SIGNAL NAME USAGE JP3 (Bottom) A0, A1, A2 DIP Switch Used to Set the Address Offset OPEN S1 CONTROL Switch Used to Enable/Disable the CONTROL0 Input Pin of LTC2975 RUN 18 DEFAULT dc2022af DEMO MANUAL DC2022A DC2022A Details - Bottom dc2022af 19 DEMO MANUAL DC2022A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER IC 4-CH POWER SYSTEM MANAGER 64QFN Linear Technology: LTC2975CUP#PBF Required Circuit Components 1 1 U4 Additional Demo Board Circuit Components 2 4 C1, C3, C33, C35 CAP CER 220pF 50V 10% X7R 0603 AVX: 06035A221KAT2A 3 8 C2, C4, C5, C6, C30, C31, C32, C34 CAP CER 2200pF 50V 20% X7R 0603 Murata: GRM188R71H222MA01D 4 14 C7, C8, C12, C16, C18, C21, C22, C25, C26, C43, C44, C50, C54, C55 CAP CER 0.1µF 16V 10% X7R 0603 TDK Corp: C1608X7R1C104K 5 10 C9, C10, C15, C23, C24, C41, C42, C45, C56, C57 CAP CER 22µF 10V 10% X5R 1210 Murata: GRM32ER61A226KE20L 6 2 C11, C48 CAP CER 10µF 25V 10% X7R 1206 Kemet: C1206C106K3RACTU 7 2 C13, C53 CAP CER 68pF 50V 5% NPO 0603 Yageo: CC0603JRNPO9BN680 8 7 C14, C19, C20, C27, C28, C29, C46 CAP CER 1µF 16V 10% X7R 0603 Murata: GRM188R71C105KA12D 9 1 C17 CAP CER 47pF 50V 5% NPO 0603 Yageo: CC0603JRNPO9BN470 10 10 C36, C37, C38, C39, C49, C58, C59, C60, C61, C62 CAP CER 10000pF 25V 10% X7R 0603 Yageo: CC0603KRX7R8BB103 11 1 C40 CAP TANT 47µF 16V 20% 7343 Kemet: T520D476M016ATE035 12 2 C47, C51 CAP CER 4.7µF 16V 10% X5R 0603 TDK: C1608X5R1C475K 13 1 C52 CAP CER 4.7pF 50V NP0 0603 Murata: GRM1885C1H4R7CZ01D 14 1 D1 DUAL SCHOTTKY DIODE 30V CC SOT-323-3 STMicroelectronics: BAT30CWFILM 15 4 L1, L2, L4, L5 INDUCTOR SHLD POWER 4.7µH SMD Abracon Corporation: ASPI-0315FS-4R7M-T2 Würth: 744029004 (Alternate) 16 1 L3 INDUCTOR POWER 2.2µH 2.85A SMD Vishay: IHLP1616BZER2R2M11 17 2 LED1, LED2 LED RED HI BRT SS TYPE LO CUR SM Panasonic: LNJ208R8ARA 18 5 LED3, P1, P2, P3, P4 LED GREEN HIGH BRIGHT ESS SMD Panasonic: LNJ326W83RA 19 4 Q1, Q2, Q3, Q4 TRANS GP SS PNP 40V SOT323 ON Semiconductor: MMBT3906WT1G 20 5 Q5, Q6, Q7, Q8, Q9 MOSFET N-CH 30V 900MA SOT323-3 Diodes Inc.: DMG1012UW-7 Vishay/Siliconix: SI1304BDL-T1-E3 (alternate) 21 9 R1, R2, R25, R26, R29, R30, R43, R52, R53 RES 100K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603100KFKEA 22 1 R3 RES 47.5K OHM 1/10W 1% 0603 SMD Vishay: CRCW060375K5FKEA 23 1 R4 RES 32.4K OHM 1/10W 1% 0603 SMD Vishay: CRCW060332K4FKEA 24 5 R5, R6, R10, R18, R19 RES 3.01K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-073K01L 25 1 R7 RES CURRENT SENSE .050 OHM 1W 1% Ohmite: MCS1632R050FER 26 8 R8, R12, R20, R23, R24, R37, R39, R56 RES 10.0K OHM 1/10W 1% 0603 SMD Vishay: CRCW060310K0FKEA 27 2 R9, R45 RES 73.2K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-0773K2L 28 1 R11 RES 46.4K OHM 1/10W 1% 0603 SMD NIC: NRC06F4642TRF 29 2 R13, R17 RES 249 OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-07249RL 30 1 R14 RES 1.00K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-071KL 31 3 R15, R16, R38 RES ARRAY 10K OHM 4 RES 1206 Vishay/Dale: CRA06S08310K0JTA 32 1 R21 RES 115K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603115KFKEA 33 1 R22 RES 80.6K OHM 1/10W 1% 0603 SMD Vishay: CRCW060380K6FKEA 34 4 R27, R28, R54, R55 RES 330 OHM 1/2W 1% 1210 SMD Vishay Dale: CRCW1210330RFKEA 35 4 R31, R32, R50, R51 RES ARRAY 2.7K OHM 4 RES 1206 Vishay/Dale: CRA06S0832K70JTA 20 dc2022af DEMO MANUAL DC2022A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 36 4 R33, R35, R47, R49 RES 100 OHM 1/10W 1% 0603 SMD NIC: NRC06F1000TRF 37 1 R34 RES 340K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603340KFKEA 38 1 R36 RES 402K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603402KFKEA 39 1 R40 RES 2.15K OHM 1/10W 1% 0603 SMD Vishay: CRCW06032K49FKEA 40 1 R41 (OPT) RES 10.0K OHM 1/10W 1% 0603 SMD Vishay: CRCW060310K0FKEA 41 2 R42, R44 RES 698 OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-07698RL 42 1 R46 RES 158K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603158KFKEA 43 1 R48 RES 210K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603210KFKEA 44 4 U1, U2, U7, U8 IC BUCK SYNC ADJ 0.3A SOT23-6 Linear Technology: LTC3405AES6#TRMPBF 45 1 U3 IC BUCK SYNC 2.5A 16QFN Linear Technology: LTC3604IUD#PBF 46 1 U5 IC DUAL 4A DIODES 16-MSOP Linear Technology: LTC4415IMSE#PBF 47 1 U6 IC 2WIRE BUS BUFFER 8MSOP Linear Technology: LTC4313CMS8-2#PBF 48 1 U9 IC I/O EXPANDER I2C 8B 20QFN Microchip: MCP23008-E/ML 49 1 U10 IC EEPROM 2KBIT 400KHZ SOT23-5 Microchip Technology: 24AA02T-I/OT 50 1 U11 IC VREF SERIES PREC TSOT-23-6 Linear Technology: LT6654BHS6-1.25#TRMPBF 51 1 U12 IC BUFFER DUAL NON-INV SC706 TI: SN74LVC2G34DCKR Hardware: For Demo Board Only 52 1 J1 CONN PWR JACK 2.1X5.5MM HIGH CUR CUI Inc: PJ-002AH 53 1 J2 CONN HEADER 12POS 2MM STR DL PCB FCI: 98414-G06-12ULF 54 1 JP1 CONN RECEPT 2MM DUAL R/A 14POS Sullins Connector Solutions: NPPN072FJFN-RC 55 1 JP2 CONN HEADER 14POS 2MM R/A GOLD Molex Connector Corporation: 87760-1416 56 1 JP3 SWITCH DIP 4POS HALF PITCH SMD C&K Components: TDA04H0SB1 57 4 MH1, MH2, MH3, MH4 SPACER STACKING #4 SCREW NYLON Keystone: 8831 58 1 S1 SW SLIDE DPDT 6VDC 0.3A PCMNT C&K Components: JS202011CQN 59 1 SW1 BLK SWITCH TACTILE SPST-NO 0.05A 12V C&K Components: PTS635SL25SMTR LFS 60 1 SW2 RED SWITCH TACTILE SPST-NO 0.05A 12V C&K Components: PTS635SK25SMTR LFS 61 14 TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP12, TP13, TP14, TP19, TP20, TP21, TP22 TERM SOLDER TURRET .219" .078"L MILL-MAX: 2501-2-00-80-00-00-07-0 dc2022af 21 GND C25 100n GND C44 100n 1 GND Q3 MMBT3906 GND 3 2 R35 100 R36 402k GND SW 3 4 VIN RUN 1 GND 2 5 VFB 6 MODE U7 LTC3405AES6 C39 10n GND C38 10n C32 2.2n GND R32 2.7k, 4X C30 2.2n GND GND C42 22u/10V 1210 GND L4 4.7uH 1 Q6 DMG1012UW-7 P3 GREEN R18 3.01k CRA06S 4x ARRAY 1. ALL RESISTORS ARE 1% 0603. 2. ALL CAPACITORS ARE 16V 0603. 3. THE INTERMEDIATE BUS IS VDD=5.0V ISNSN_CH0 ISNSP_CH0 TEMP_CH0 VSNS_CH0 RUN_CH0 DACP_CH0 C23 22u/10V 1210 VDD R30 100k VDD 1 3 2 2 R21 115k GND R25 100k GND R28 330 1210 C33 220p VOUT_CH0 CH0 1.5V ISNSN_CH1 ISNSP_CH1 TEMP_CH1 VSNS_CH1 RUN_CH1 GND DACP_CH1 C24 22u/10V 1210 VDD C26 100n R34 340k 1 GND Q4 MMBT3906 GND SW 3 GND 3 2 R33 100 RUN 1 GND 2 C34 2.2n GND C37 10n GND C36 10n CRA06S 4x ARRAY C31 2.2n GND R26 100k B GND R22 80.6k GND R27 330 1210 SCALE = NONE APP ENG. PCB DES. R31 2.7k, 4X C41 22u/10V 1210 GND Q5 DMG1012UW-7 P4 GREEN R19 3.01k GND L5 4.7uH 1 CUSTOMER NOTICE GND C43 100n 4 VIN 5 VFB 6 MODE U8 LTC3405AES6 R29 100k VDD LTC2975 CH1 POWER STAGE, VOUT=1.8V 1 3 2 2 LTC2975 CH0 POWER STAGE, VOUT=1.5V 1 C35 220p 1 GND 02-12-14 LTC CONFIDENTIAL FOR CUSTOMER USE ONLY CH1 1.8V MIKE P. Q7 DMG1012UW-7 www.linear.com SHORT GND R43 100k SW2 SHORT VDD VOUT_CH1 PRODUCTION 3 22 2 - DEMO MANUAL DC2022A Schematic Diagram dc2022af C7 100n GND C55 100n 1 GND Q1 MMBT3906 GND 3 2 R49 100 R48 210k SW 3 4 VIN GND GND 2 5 VFB RUN 1 U1 LTC3405AES6 6 MODE C60 10n GND C61 10n C2 2.2n GND R51 2.7k, 4X C5 2.2n GND GND C57 22u/10V 1210 GND L1 4.7uH 1 Q9 DMG1012UW-7 P1 GREEN R5 3.01k CRA06S 4x ARRAY 1. ALL RESISTORS ARE 1% 0603. 2. ALL CAPACITORS ARE 16V 0603. 3. THE INTERMEDIATE BUS IS VDD=5.0V ISNSN_CH2 ISNSP_CH2 TEMP_CH2 VSNS_CH2 RUN_CH2 GND DACP_CH2 C9 22u/10V 1210 VDD R53 100k VDD R1 100k GND R3 47.5k GND R55 330 1210 LTC2975 CH2 POWER STAGE, VOUT=2.5V C1 220p VOUT_CH2 CH2 2.5V ISNSN_CH3 ISNSP_CH3 TEMP_CH3 VSNS_CH3 RUN_CH3 GND DACP_CH3 C10 22u/10V 1210 VDD C8 100n 1 GND Q2 MMBT3906 GND 3 2 R47 100 R46 158k GND SW 3 GND 2 C4 2.2n GND C58 10n GND C59 10n CRA06S 4x ARRAY C6 2.2n GND R2 100k B GND R4 32.4k GND R54 330 1210 SCALE = NONE APP ENG. PCB DES. R50 2.7k, 4X C56 22u/10V 1210 GND Q8 DMG1012UW-7 P2 GREEN R6 3.01k GND L2 4.7uH 1 CUSTOMER NOTICE GND C54 100n 4 VIN 5 VFB RUN 1 U2 LTC3405AES6 6 MODE R52 100k VDD LTC2975 CH3 POWER STAGE, VOUT=3.3V 1 3 2 2 1 3 2 2 - 1 C3 220p MIKE P. CH3 3.3V www.linear.com VOUT_CH3 PRODUCTION LTC CONFIDENTIAL FOR CUSTOMER USE ONLY 02-12-14 DEMO MANUAL DC2022A Schematic Diagram 23 dc2022af C14 1u GND VDD GND SCL SDA ALERTB FAULTB CTRL SHARE_CLK RESETB C18 100n +3V3 VSNS_CH1 VSENSEP0 VSENSEM0 VOUT_EN0 VOUT_EN1 VOUT_EN2 VOUT_EN3 AUXFAULTB DNC VIN_SNS VPWR VDD33 VDD33 VDD25 VDD25 TSENSE0 TSENSE1 U4 LTC2975CUP R15 10k, 4X CRA06S TEMP_CH0 TEMP_CH1 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DACP_CH1 DACP_CH0 DACP_CH2 DACP_CH3 VSNS_CH2 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 GND 1. ALL RESISTORS ARE 1% 0603. 2. ALL CAPACITORS ARE 16V 0603. 3. THE INTERMEDIATE BUS IS VDD=5.0V R38 10k, 4X CRA06S GND C21 100n VSNS_CH0 VSNS_CH3 ISENSEM3 ISENSEP3 ISENSEM2 ISENSEP2 ISENSEM1 ISENSEP1 ISENSEM0 ISENSEP0 REFM GND REFP GND ASEL1 ASEL0 TSENSE3 CONTROL1 C62 10n GND GND 38 37 36 35 34 33 SW1 RESET GND TEMP_CH2 GND TEMP_CH3 C52 4.7p GND GND GND C53 68p R45 73.2k C11 10u/25V 1206 +12V GND ITH FB RT SGND GND GND 12 11 10 9 C40 47u/16V 7343 PAD PAD GND GND ISNSN_CH3 48 ISNSP_CH3 47 ISNSN_CH2 46 ISNSP_CH2 45 ISNSN_CH1 44 ISNSP_CH1 43 ISNSN_CH0 42 ISNSP_CH0 41 40 C16 39 100n GND C51 4.7u 1 2 3 4 U3 LTC3604IUD MODE/SYNC PGOOD SW SW NC RUN_CH0 RUN_CH1 RUN_CH2 RUN_CH3 PAD 13 14 15 16 TRACK/SS RUN VIN VIN 8 7 VON 6 INTVCC 5 BOOST C49 10n GND GND C17 47p C13 68p C15 22u/10V 1210 IBV_AUX GND EEVCC DNC 5 VIN 4 2 GND 3 DNC 1 GND VOUT 6 U11 LT6654BMPS6-1.25 GND R8 10k R9 73.2k CUSTOMER NOTICE C12 100n IHLP-1616BZ L3 2.2uH GND C47 4.7u GND GND R40 2.49k SCALE = NONE APP ENG. PCB DES. C46 1u GND R13 249 D1 BAT30CWFILM GND R12 10k C20 1u R11 46.4k B INTERMEDIATE +5V BUS AND DIODE-OR 2 IIN_SNSM 1 IIN_SNSP GND R14 1.0k GND 1 OUT1 OUT1 STAT1 WARN1 WARN2 STAT2 OUT2 OUT2 GND IN1 IN1 EN1 CLIM1 CLIM2 EN2 IN2 IN2 C19 1u 1 2 3 4 5 6 7 8 U5 LTC4415IMSE IIN_SNSM IIN_SNSP C48 10u/25V 1206 VDD LTC CONFIDENTIAL FOR CUSTOMER USE ONLY LED3 GREEN R10 3.01k +5V 02-12-14 GND GND MIKE P. R7 0.050 1206 www.linear.com 16 15 14 13 12 11 10 9 PRODUCTION EXP GND LTC2975 4-CHANNEL POWER SYSTEM MANAGER FEATURING ACCURATE ENERGY MEASUREMENT 3 VSENSEM1 VSENSEP1 VSENSEM2 VSENSEP2 GND GND VDAC3 VDAC2 IIN_SNSM/NC IIN_SNSP/NC VDAC1 VDAC0 GND/NC VIN_SNS_CAP/NC VSENSEM3 VSENSEP3 PWRGD SHARE_CLK GND GND GND CONTROL2 CONTROL3 WDI/RESETB FAULTB0 FAULTB1 TSENSE2 WP SDA SCL ALERTB CONTROL0 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 24 2 - DEMO MANUAL DC2022A Schematic Diagram dc2022af R37 10k Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. GND GND 1 3 5 7 9 11 13 GND GP2 15 GP6 14 GP5 13 GP4 12 GP3 11 R23 10k SHORT U9 MCP23008-E/ML R41 OPT +3V3 SCL_IN SDA_IN EESCL EESDA +12V UNUSED2 FAULTB ALERTB SHARE_CLK RESETB UNUSED1 1. ALL RESISTORS ARE 1% 0603. 2. ALL CAPACITORS ARE 16V 0603. 3. THE INTERMEDIATE BUS IS VDD=5.0V CONN_DC1613 +5V (100mA) 1 SDA 2 GND 3 SCL 4 +3.3V(100mA) 5 ALERT 6 GPO_1 7 OUTEN 8 GPO_2 9 GND 10 AUXSCL 11 AUXSDA 12 J2 R39 10k +3V3 GND 2 4 6 8 10 12 14 TP6 CTRL_P TP5 SHARE_CLK TP1 TP2 TP20 SCL_IN SDA_IN CTRL GP1 GND GND GND TP13 SCL 10 GND 1 2 3 4 GND 8 7 6 5 A2 A1 A0 RST\ NC 1 2 3 4 5 U6 ENABLE VCC SCLO SDAO SDAI SCLI GND READY GND 1 3 5 7 9 11 13 JP2 MALE GND C29 1u R17 249 +3V3 GND LTC4313CMS8 GP0 16 GP7 PAD PAD 17 VSS 8 NC 18 VDD 9 TP7 FAULTB TP19 SDA TP12 ALERTB 7 INT 19 SCL 6 NC 20 SDA JP1 FEMALE R56 10k C22 100n 2 4 6 8 10 12 14 +3V3 GND 1 ON 2 3 4 8 7 6 5 GND 1 2 3 4 JP3 TDA04H0SK1 R16 10k, 4X GND C28 1u S1 3 1 6 4 CONTROL GND SDA SCL OFF S1 2 5 RUN 3 2 1 GND GND C27 1u GND GND C45 22u/10V 1210 CUSTOMER NOTICE VCC 4 U10 24AA02T-I/OT 3 SDA 2 GND WP 5 EEVCC 1 SCL R20 10k 6-14V POWER INPUT R24 10k GND +12V SCALE = NONE APP ENG. PCB DES. 1 3 2A 2 GND 1 1A B 2Y 4 VCC 5 1Y 6 U12 SN74LVC2G34DCK GND FAULTB ALERTB - 2 2 LED1 RED 1 1 LED2 RED R44 698 R42 698 MIKE P. GND C50 100n www.linear.com +3V3 PRODUCTION LTC CONFIDENTIAL FOR CUSTOMER USE ONLY 02-12-14 DEMO MANUAL DC2022A Schematic Diagram dc2022af 25 DEMO MANUAL DC2022A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation 26 Linear Technology Corporation dc2022af LT 0714 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2014