19-4423; Rev 0; 1/09 MAX11008 Evaluation Kit/ Evaluation System The MAX11008 evaluation kit (EV kit) is an assembled and tested circuit board that demonstrates the MAX11008 dual RF LDMOS CODEC smart regulator for LDMOS FET bias control. Windows(R) 98/2000/XP software provides a handy user interface to exercise the features of the MAX11008. Windows is a registered trademark of Microsoft Corp. Features Proven PCB Layout Complete Evaluation System Convenient On-Board Test Points Data-Logging Software o Lead(Pb)-Free and RoHS Compliant Fully Assembled and Tested Component List MAX11008EVC16 System Component List PART QTY DESCRIPTION MAX11008EVKIT+ 1 MAX11008 EV kit HSI2CMOD 1 High-speed I2C interface module 68HC16MODULE-DIP 1 68HC16 C module Ordering Information PART TYPE MAX11008EVKIT+ EV Kit EV Sys MAX11008EVC16 INTERFACE REQUIREMENTS User-provided I2C interface Windows PC with RS-232 serial port +Denotes lead(Pb)-free and RoHS compliant. Component List (continued) MAX11008EVKIT Component List DESIGNATION QTY C4, C8, C10, C12, C16, C18, C26, C27 DESCRIPTION 8 1F 20%, 25V X5R ceramic capacitors (0603) TDK C1608X5R1E105M C5, C9, C11, C13, C14, C15, C24, C25, C28, C29 10 0.1F 20%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104M C6, C7 0 C17 C19 C20-C23 Not installed, ceramic capacitors (0603) 1 10F 20%, 25V X7R ceramic capacitor (1210) TDK C3225X7R1E106M 1 4.7F 20%, 6.3V X5R ceramic capacitor (0603) TDK C1608X5R0J475M 4 100pF 10%, 50V C0G ceramic capacitors (0603) TDK C1608C0G1H101K DESIGNATION QTY DESCRIPTION D1, D2 2 npn transistors (3 SOT23) Fairchild MMBT3904 Top mark: 1A FB1 1 70, 4A ferrite bead (0603) Murata BLM1856700N1 J1 1 20-pin, 2 x 10 right-angle female receptacle JU0-JU4 5 3-pin jumpers JU5-JU20 16 2-pin jumpers M1, M2 2 FETs, n-channel (TO-220AB) VDS = 55V (High VDS--> Low gm) RDSON = 0.024 at VDS = 10V ID = 29A at +100C International Rectifier IRFZ44N R1, R2 2 1.00k 1% resistors (1206) R3, R9 2 4.99k 1% resistors (1206) ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 Evaluate: MAX11008 General Description Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Component List (continued) MAX11008EVKIT Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY R4 1 0 resistor (0603) R5, R6 2 100 5% resistors (1206) R7, R8 2 1.00 1% sense resistors (2010) Vishay (Dale) CRCW20101R00FNEF R10, R11 2 0 resistors (1206) R12, R13 2 10k 5% resistors (1206) R14, R15 2 47 5% resistors (1206) U1 1 Dual RF LDMOS CODEC (48 TQFN-EP*) Maxim 11008BETM+ DESCRIPTION U2 1 2.5V voltage reference (8 SO) Maxim MAX6126AASA25+ U3 1 28V input linear regulator (5 SOT23) Maxim MAX1615EUK+T (Top Mark: ABZD) -- 21 Shunts -- 1 PCB: MAX11008 Evaluation Kit+ *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com International Rectifier 310-322-3331 www.irf.com TDK Corp. 847-803-6100 www.component.tdk.com Vishay 402-563-6866 www.vishay.com Note: Indicate you are using the MAX11008 when contacting these component suppliers. Quick Start Required Equipment * Maxim MAX11008EVC16 (contains MAX11008EVKIT+ board, HSI2CMOD, and 68HC16MODULE-DIP) * DC power supply, 8V at 500mA * DC power supply, 10V at 1000mA * Windows 98/2000/XP computer with a spare serial (COM) port * 9-pin I/O extension cable Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and underlined refers to items from the Windows operating system. Procedure The MAX11008 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power until all connections are completed. 1) Ensure that the MAX11008EVKIT jumpers are set in accordance with Table 1. 2 2) Carefully connect the boards by aligning the 40-pin header of the HSI2CMOD with the 40-pin connector of the 68HC16MODULE-DIP module. Gently press them together. The two boards should be flush against one another. Next, connect the MAX11008 EVKIT 20-pin connector to the HSI2CMOD board. 3) Connect the 8V DC power source to the 68HC16MODULE at the terminal block located next to the on/off switch, along the top edge of the module. Observe the polarity marked on the board. 4) Connect a cable from the computer's serial port to the 68HC16MODULE. If using a 9-pin serial port, use a straight-through, 9-pin female-to-male cable. If the only available serial port uses a 25-pin connector, a standard 25-pin to 9-pin adapter is required. The EV kit software checks the modem status lines (CTS, DSR, DCD) to confirm that the correct port has been selected. 5) Install the evaluation software on your computer by launching MAX11008.msi. (The latest software can be found at www.maxim-ic.com/evkitsoftware.) The program files are copied and icons are created for them in the Windows Start menu. _______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System 7) Start the MAX11008EVKIT program by opening its icon in the Start menu. 8) Click the Connect button to establish communications with the 68HC16MODULE and HSI2CMOD boards. The program prompts you to connect the C module and turn its power on. Slide SW1 to the ON position. Select the correct serial port, and click OK. The program automatically downloads its software to the module. (During connection, you will be asked to move the HSI2CMOD rev A board's jumper JU5 shunt.) 9) After successful connection, you will be prompted to read the EEPROM and perform a full reset. Answer YES to ensure that the software graphical user interface (GUI) and the working registers match the initial values stored in the MAX11008's nonvolatile EEPROM. 10) Bring up the ADC / Control tab. 11) Connect the 10V DC power supply to the MAX11008EVKIT's DRAIN1 (+) and SOURCE1 (-), leaving DRAIN2 and SOURCE2 unconnected. Note: The power-supply grounds are connected through resistor R10. 12) Turn on the 10V DC power supply. FET M1 may begin drawing current. Adjust the channel 1 VGS OFFSET control until the drain current is 125mA. Keep a note of this board calibration value in case factory defaults must be restored. 13) Check Force GATE1 off, and FET M1 stops drawing current. 14) Connect the 10V DC power supply to DRAIN2 (+) and SOURCE2 (-). FET M2 may begin drawing current. Adjust the channel 2 VGS OFFSET control until the drain current is 125mA. Keep a note of this board calibration value in case factory defaults must be restored. 15) Uncheck Force GATE1 off. Both M1 and M2 should draw 125mA each, compensating for temperature rise. Detailed Description of Software The MAX11008 EV kit software GUI is organized into several tabs. Hardware Connection Tab (Figure 1) Individual working registers may be read or written from this tab. When the software first starts, click the Connect button to establish communications with the 68HC16MODULE and HSI2CMOD boards. During connection, you will be asked to move the HSI2CMOD rev A board's jumper JU5 shunt. After successful connection, you will be prompted to read the EEPROM and perform a full reset. Answering NO to this prompt allows complete control of all read and write operations. Answering YES to the prompt initializes the GUI by bringing up the EEPROM tab, clicking Refresh, then bringing up the ADC / Control tab and clicking Full Reset, and finally in Working Registers clicking Refresh. Warning: Writing the UMSG or STRM registers while the ADC is continuously converting overwrites the contents of the EEPROM with ADC conversion data. The GUI hides these detailed operations. Refer to source code files drv11008.cpp and kit11008.asm for implementation details. EEPROM Tab (Figure 2) Clicking the Refresh button reads the entire MAX11008 nonvolatile memory into the GUI. To write a new value to an EEPROM cell, edit its hexadecimal value in the grid, either by clicking with the mouse or by using the arrow keys and function key F2. A prompt dialog box confirms writing the value and the register. The EV kit software uses BUSY hardware handshaking when performing UMSG (EEPROM block read). The EV kit does not perform any handshaking when performing STRM (EEPROM block write), since the communications data link to the PC is too slow to overflow the MAX11008's FIFO. Restoring Factory Configuration The MAX11008 EV kit can be restored to its factorydefault EEPROM image by clicking Load from File and choosing file MAX11008EVKIT-EEPROM.txt. Working Registers Tab (Figure 3) The GUI remembers the working register values read from or written to the hardware. Some of the working registers are write-only, so the GUI cannot always determine the value. Clicking the Refresh button reads all readable MAX11008 working registers into the GUI. To write a new value to a register, edit either its hexadecimal value or the individual bits, either by clicking with the mouse or by using the arrow keys and function key F2. A prompt dialog box confirms writing the value and the register. Working register values are read from the EEPROM at device power-up, and after performing a full reset. The Full Reset button is located on the ADC / Control tab. _______________________________________________________________________________________ 3 Evaluate: MAX11008 6) Turn on the 8V DC power supply. Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Tables Tab (Figure 4) Keyboard Navigation There are four look-up tables (LUTs) that can be loaded: TLUT1 and TLUT2 for temperature compensation, and ALUT1 and ALUT2 for optional additional compensation. The EV kit software includes an MS-Excel spreadsheet file MAX11008_LUT_Example.xls, which models how physical temperature and voltage parameters can be mapped into the MAX11008's EEPROM memory. Refer to the Temperature/APC Configuration Registers section in the MAX11008 IC data sheet for detailed operation of the look-up tables. A set of radio buttons selects one of the four LUT configuration registers. After clicking the appropriate radio button for TLUT1, ALUT1, TLUT2, or ALUT2, the software displays configuration values (pointer offset, linear interpolation, pointer size, table size, and start of table). After modifying any of these configuration values, click the Apply Changes button to write the new configuration value for the selected table. To initialize a table, click the radio button selecting the desired table. Enter the value 0 into the edit field next to the Fill with constant button, then click to fill the table with zeros. Enter the known correction values into the table from the EEPROM tab, or click Load from file to load the table points from a text file. Finally, click Interpolate entries that contain zero to perform linear interpolation on all zero value table entries. (This operation is not the same as the MAX11008's linear interpolation between table entries. The GUI software interpolation fills in missing table entries.) The memory map display shows which address range is assigned to each enabled look-up table. Two or more look-up tables may be assigned to the same address range; however, they will contain identical data. Overlapping table ranges are not recommended. When you type on the keyboard, the system must know which control should receive the keys. Press the Tab key to move the keyboard's focus from one control to the next. The focused control is indicated by a dotted outline. Shift+Tab moves the focus to the previously focused control. Buttons respond to the keyboard's SPACE bar. Some controls respond to the keyboard's UP and DOWN arrow keys. Activate the program's menu bar by pressing the F10 key, then press the letter of the menu item you want. Most menu items have one letter underlined, indicating their shortcut key. Alarms Tab (Figure 5) Detailed Description of Hardware For the purpose of "table-top" demonstration, two MOSFETS (M1 and M2) are provided on-board, taking the place of the LDMOS FETs that would be used in a real application. Diode-connected BJT transistors D1 and D2 sense the temperature of each FET while remaining electrically isolated by different PCB copper layers. Capacitors C20 and C21 filter the external temperature measurements. Gate drive is lowpass filtered by R14/C28 and R15/C29. Drain current is measured by Kelvin-connected precision resistors R7 and R8, filtered by R5/C22 and R6/C23. Drain voltage is sensed by 6:1 resistor-dividers R9/R1 and R3/R3. Power is provided from the HSI2CMOD board connected to J1. The digital supply connects directly to 5V through jumper JU8. On-board MAX1615 regulator U3 provides the 5V analog supply through jumper JU12. On-board MAX6126 voltage reference U2 drives both REFADC and REFDAC through jumpers JU5 and JU6. The MAX11008 power is bypassed by C4, C5, and C24-C27. The complete evaluation system is a three-board set, with the 68HC16 microcontroller driving the HSI2CMOD board's high-speed I 2C interface core. Refer to the HSI2CMOD online documentation for details. The Alarms tab configures the ALARM output pin, temperature and current alarm limits, hysteresis, and alarm behavior. ADC / Control Tab (Figure 6) The ADC / Control tab configures the system parameters, reads ADC data, and controls the gate-driver outputs. 4 _______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Table 1. Jumper Settings JUMPER SHUNT POSITION JU8 JU12 JU5 JU6 JU7 JU9 JU10 JU11 JU13 JU15 JU14 JU16 JU17 JU18 JU19 JU20 Closed* Open Closed* Open Closed* Open Closed* DESCRIPTION DVDD is powered from connector J1 DVDD must be provided by user AVDD is powered by on-board regulator U3 AVDD must be provided by user REFDAC = 2.500V from U2 REFDAC = internal 2.5V from U1 REFADC = 2.500V from U2 Open REFADC = internal 2.5V from U1 Closed* Demo circuit RCS1+ connection Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Closed* Open Use external user-provided current-sense connection Demo circuit RCS1- connection Use external user-provided current-sense connection Demo circuit ADCIN1 sense M1 VDRAIN/4 Use external user-provided ADCIN1 connection Demo circuit M1 gate connection Connect to external user-provided FET gate Demo circuit D1 temperature sensor connection Connect external user current-sense diode Demo circuit RCS2+ connection Use external user-provided current-sense connection Demo circuit RCS2- connection Use external user-provided current-sense connection Demo circuit ADCIN2 sense M2 VDRAIN/4 Use external user-provided ADCIN2 connection Demo circuit M2 gate connection Connect to external user-provided FET gate Demo circuit D2 temperature sensor connection Connect external user current-sense diode Force OPSAFE1 pin to DGND, normal operation OPSAFE1 must be driven by a user-provided source Force OPSAFE2 pin to DGND, normal operation OPSAFE2 must be driven by a user-provided source *Default position. _______________________________________________________________________________________ 5 Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Table 1. Jumper Settings (continued) JUMPER JU0 SHUNT POSITION 1-2* A0 = DVDD 2-3 A0 = DGND (I2C address selection) Open JU1 JU3 A0 must be driven by user A1 = DVDD (I2C address selection) 2-3 A1 = DGND (I2C address selection) A1 must be driven by user 1-2* A2 = DVDD (I2C address selection) 2-3 A2 = DGND (I2C address selection) Open A2 must be driven by user 1-2* CNVST = DVDD (inactive) 2-3 CNVST = DGND (active) Open JU4 address selection) 1-2* Open JU2 DESCRIPTION (I2C CNVST can be driven by user 1-2 DGND3 = DVDD (selecting SPITM interface) 2-3* DGND3 = DGND (selecting (I2C interface) *Default position. SPI is a trademark of Motorola, Inc. 6 _______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Figure 1. Hardware Connection Tab After Successful Connection Figure 2. EEPROM Tab Showing a Typical Configuration _______________________________________________________________________________________ 7 Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Figure 3. Working Registers Tab Showing a Bit Field Search Figure 4. Tables Tab Showing a Typical Configuration 8 _______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Figure 5. Alarms Tab Showing a Typical Configuration Figure 6. ADC / Control Tab Showing a Typical Configuration _______________________________________________________________________________________ 9 Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Figure 7. MAX11008 EV Kit Schematic 10 ______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Figure 8. MAX11008 EV Kit Component Placement Guide--Component Side ______________________________________________________________________________________ 11 Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Figure 9. MAX11008 EV Kit PCB Layout--Component Side 12 ______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Figure 10. MAX11008 EV Kit PCB Layout--Ground Layer 2 ______________________________________________________________________________________ 13 Evaluate: MAX11008 MAX11008 Evaluation Kit/ Evaluation System Figure 11. MAX11008 EV Kit PCB Layout--Power Layer 3 14 ______________________________________________________________________________________ MAX11008 Evaluation Kit/ Evaluation System Evaluate: MAX11008 Figure 12. MAX11008 EV Kit PCB Layout--Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 (c) 2009 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAX11008EVC16 MAX11008EVKIT+