MAX16929EVKIT#

19-5838; Rev 0; 4/11 MAX16929 Evaluation Kit Evaluates: MAX16929 General Description The MAX16929 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that provides the voltages and features required for automotive thin-film transistor (TFT), liquid-crystal display (LCD) applications. The EV kit includes one step-down and one step-up switching regulator, one positive gate and one negative gate voltage regulator, one 3.3V regulator controller with external npn transistor, and one positive and one negative charge pump. The EV kit can operate from 4.5V to 28V input voltages and is optimized for automotive TFT-LCD applications. The step-down switching regulator is configured for a 5V output that provides at least 1.2A. The step-up switching regulator is configured for a 12V output that provides at least 500mA. The positive gate voltage regulator provides 18V output and the negative gate voltage regulator provides -6.2V. Features S 4.5V to 28V Input Range S Output Voltages 5V Output at 1.2A (Step-Down Switching Regulator) 12V Output at 500mA (Step-Up Switching Regulator) 3.3V Output at 500mA (Regulator Controller) 18V Output (Positive Gate Voltage Regulator) -6.2V Output (Negative Gate Voltage Regulator) S High-Frequency Operation 2.1MHz (Buck Converter) 2.2MHz (Boost Converter) S Adjustable Positive and Negative Charge Pumps S Proven PCB Layout S Fully Assembled and Tested Ordering Information appears at end of data sheet. Component List DESIGNATION QTY AVL, FBB 2 Test points C12, C13, C16, C21 4 4 10FF Q20%, 35V X7R ceramic capacitors (1210) Murata GRM32ER7YA106K Taiyo Yuden GMK325F106ZH 1FF Q10%, 50V X7R ceramic capacitors (0805) Murata GRM21BR71H105K TDK C2012X7R1H105K C15 1 8 0.1FF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H104K TDK C1608X7R1H104K 47FF Q20%, 50V aluminum electrolytic capacitor (D case) Panasonic EEE-1HA470XP C18, C19 2 10FF Q10%, 25V X7R ceramic capacitors (1210) Murata GRM32DR71E106K C20 1 1FF Q10%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C105K C23, C29, C37, C38, C42, C43 0 Not installed, ceramic capacitors (1210) C26 1 4.7FF Q20%, 25V X7R ceramic capacitor (1206) Murata GRM31CR71E475M TDK C3216X7R1E475M C28, C30 0 Not installed, ceramic capacitors (0805) C1, C4, C22, C24 C2, C3, C5, C14, C17, C25, C27, C39 DESCRIPTION C6 1 2.2FF Q20%, 6.3V X5R ceramic capacitor (0603) Murata GRM188R60J225K TDK C1608X5R0J225K C7 1 220pF Q10%, 50V X7R ceramic capacitor (0603) Murata GRM188R71H221K C8, C40, C41 0 Not installed, ceramic capacitors (0603) C9 1 150pF Q5%, 50V C0G ceramic capacitor (0603) Murata GRM1885C1H151J DESIGNATION QTY DESCRIPTION __________________________________________________________________ Maxim Integrated Products   1 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. MAX16929 Evaluation Kit Evaluates: MAX16929 Component List (continued) DESIGNATION QTY D1, D6 2 D2, D3 2 DESCRIPTION 200mA, 100V dual series diodes (SOT23) Fairchild MMBD4148SE Central Semi CMPD7000+ 3A, 30V Schottky diodes (M-Flat) Toshiba CMS02(TE12L,Q) DESIGNATION QTY DESCRIPTION Q1 1 npn bipolar transistor (SOT23) Fairchild MMBT3904 Q2 1 npn high-gain transistor (SOT89) Zetex ZXTN25012EZ R1, R2, R20 0 Not installed, resistors (0603) R3 1 33I Q5% resistor (0603) 1 180kI Q5% resistor (0603) R6 1 169kI Q1% resistor (0603) 1 2A, 50V fast-recovery diode (SMB) Fairchild ES2A R5 R7 1 10kI Q1% resistor (0603) D5 1 2A, 60V Schottky diode (SMB) Diodes Inc. B260-13-F R9 1 300I Q5% resistor (0603) R10 1 100kI Q5% resistors (0603) D7 1 Clear, red SMD LED (0805) R11 1 133kI Q1% resistor (0603) 0 Not installed, diodes (SOT23) R12 1 12.1kI Q1% resistor (0603) R13, R23 2 6.8kI Q5% resistors (0603) 0 Not installed, ferrite-bead inductor—short (PC trace) (0603) R14 1 316kI Q1% resistor (0603) R15 1 51.1I Q1% resistor (0603) D4 D8, D9 FB1 JU1, JU3, JU4 3 2-pin headers, 0.1in centers R16 1 10kI Q5% resistor (0603) JU2, JU6, JU7 3 3-pin headers, 0.1in centers R17 1 4.7kI Q5% resistor (0603) JU5 0 Not installed, 2-pin header—short (PC trace) R21 1 33kI Q5% resistor (0603) R22 1 30kI Q1% resistor (0603) JU8 1 4-pin header, 0.1in centers TP1, TP2 0 Not installed, test points L1 1 3.3FH, 9A power inductor Würth 744314330 U1 1 L2 1 4.7FH, 6A inductor Würth 744311470 Automotive TFT-LCD power supply (28 TSSOP) Maxim MAX16929EGUI/V+ — 7 Shunts P1 1 -20V, 2.4A, p-channel MOSFET (3 SuperSOT) Fairchild FDN304P — 1 PCB: MAX16929 EVALUATION KIT Component Suppliers SUPPLIER PHONE WEBSITE Central Semiconductor Corp. 631-435-1110 www.centralsemi.com Diodes Incorporated 805-446-4800 www.diodes.com Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Toshiba America Electronic Components, Inc. 949-623-2900 www.toshiba.com/taec Würth Electronik GmbH & Co. KG 201-785-8800 www.we-online.com Zetex Semiconductors (Division of Diodes Incorporated) 805-446-4800 www.diodes.com Note: Indicate that you are using the MAX16929 when contacting these component suppliers. __________________________________________________________________ Maxim Integrated Products   2 MAX16929 Evaluation Kit Evaluates: MAX16929 Quick Start • MAX16929 EV kit Recommended Equipment • 4.5V to 28V, 2A DC power supply Detailed Description of Hardware Jumper Settings Several jumper settings in the following tables illustrate some of the features of the EV kit. Boost Circuitry and 3.3V Regulator Controller Enable Input (JU1) • Voltmeter Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Verify that shunts are installed on jumpers JU1, JU3, and JU4. 2) Verify that a shunt is installed on pins 2-3 of jumper JU2. 3) Verify that a shunt is installed on pins 1-2 of jumpers JU6 and JU7. 4) Verify that a shunt is installed on pins 1-3 of jumper JU8. 5) Connect the positive terminal of the power supply to the IN1 PCB pad. Connect the negative terminal of the power supply to the PGND PCB pads closest to IN1. 6) Set the power-supply VIN to 12V. 7) Turn on the power supply and verify that the step-down switching regulator output (VBUCK) is 5V. 8) Verify that the step-up switching regulator (VSH) is 12V. 9) Verify that the 3.3V regulator is 3.3V. 10) Verify that the positive gate voltage regulator (VGH) is approximately 18V. 11) Verify that the negative gate voltage regulator (VGL) is approximately -6.2V. Table 1. Jumper JU1 Functions (ENP) SHUNT POSITION ENP PIN VSH, VCN, VCP, AND 3.3V OUTPUTS Installed* Connected to INA through resistor R16 Enabled Not installed Internally pulled to GND Disabled *Default position. Table 2. Jumper JU2 Functions (SEQ) SHUNT POSITION SEQ PIN SUPPLY SEQUENCING ORDER 1-2 Connected to INA VGL, VGH 2-3* Connected to GND VGH, VGL The device’s ENP pin enables the boost circuitry, charge pumps, and 3.3V regulator controller. When a shunt is installed on jumper JU1, the boost converter, charge pumps, and 3.3V regulator are enabled. When JU1 is left open, the corresponding outputs are disabled. See Table 1 for JU1 configuration. Supply Sequencing (JU2) The device’s SEQ pin controls the order in which the VGH and VGL supplies are sequenced. When a shunt is installed on pins 1-2 of jumper JU2, VGL is turned on first followed by VGH. When a shunt is installed on pins 2-3, VGH is turned on first followed by VGL. See Table 2 for JU2 configuration. INA Input Supply (JU3) The boost converter and 3.3V regulator controller’s input (INA) can be supplied from the output of the step-down regulator or from an external 5V power supply. Jumper JU3 controls the INA supply options. See Table 3 for JU3 configuration. Buck Converter Enable Input (JU4) The device’s ENB pin enables the step-down switching regulator circuitry. When a shunt is installed on jumper JU4, the buck converter is enabled. When JU4 is left open, the buck converter is disabled. See Table 4 for JU4 configuration. Table 3. Jumper JU3 Functions (INA) SHUNT POSITION INA PIN Installed* Powered from the VBUCK output Not installed Powered from the external 5V supply *Default position. Table 4. Jumper JU4 Functions (ENB) SHUNT POSITION ENB PIN VBUCK OUTPUTS Installed* Connected to INB through resistor R21 Enabled Not installed Internally pulled to GND Disabled *Default position. *Default position. __________________________________________________________________ Maxim Integrated Products   3 MAX16929 Evaluation Kit Evaluates: MAX16929 Charge-Pump Configuration (JU6, JU7) The EV kit provides a single-stage positive and negative charge pump. For additional flexibility, the option to add an additional stage to these charge pumps is also provided. To use the default single-stage charge pumps, set jumpers JU6 and JU7 to pins 1-2. To utilize the additional circuitry, JU6 and JU7 must be set to pins 2-3. Additional components must be populated when using this option; C40, C42, and D9 for the negative charge pump and C41, C43, and D8 for the positive charge pump. Refer to the Charge Pumps section in the MAX16929 IC data sheet for more detailed information and component selection. When using multiple charge-pump stages, it is important not to exceed the maximum rating of the CP pin. Positive Charge-Pump Adjustable Output (JU8) The EV kit’s positive charge-pump output voltage can be adjusted through jumper JU8. JU8 sets the voltage at D1’s anode (the voltage to which flying capacitor C3 is charged), in turn setting the output. Refer to the Charge Pumps section in the MAX16929 IC data sheet for more detailed information. See Table 5 for JU8 configuration. Output-Voltage Selection Boost Converter The EV kit’s step-up switching-regulator output (VSH) is set to 12V by feedback resistors R11 and R12. To generate output voltages other than 12V, select different external voltage-divider resistors, R11 and R12. Refer to the Boost Converter, Output-Voltage Selection section in the MAX16929 IC data sheet for more information. When using higher boost output voltages, it is important not to exceed the maximum rating of the CP pin. Positive Gate Voltage Regulator The EV kit’s positive gate voltage regulator output (VGH) is set to 18V by feedback resistors R6 and R7. To generate output voltages other than 18V, select different external voltage-divider resistors, R6 and R7. Refer to the Positive Gate Voltage Regulator, Output-Voltage Selection section in the MAX16929 IC data sheet for more information. Negative Gate Voltage Regulator The EV kit’s negative gate voltage regulator output (VGL) is set to -6.2V by feedback resistors R14 and R15. To generate output voltages other than -6.2V, select different external voltage-divider resistors, R14 and R15. Refer to the Negative Gate Voltage Regulator, OutputVoltage Selection section in the MAX16929 IC data sheet for more information. Table 5. Jumper JU8 Functions (D1) SHUNT POSITION D1 ANODE VOLTAGE 1-2 3.3V 1-3* VSH 1-4 VBUCK *Default position. __________________________________________________________________ Maxim Integrated Products   4 MAX16929 Evaluation Kit Evaluates: MAX16929 Figure 1. MAX16929 EV Kit Schematic __________________________________________________________________ Maxim Integrated Products   5 MAX16929 Evaluation Kit Evaluates: MAX16929 1.0” 1.0” Figure 2. MAX16929 EV Kit Component Placement Guide— Component Side Figure 3. MAX16929 EV Kit PCB Layout—Component Side 1.0” Figure 4. MAX16929 EV Kit PCB Layout—Layer 2 __________________________________________________________________ Maxim Integrated Products   6 MAX16929 Evaluation Kit Evaluates: MAX16929 1.0” Figure 5. MAX16929 EV Kit PCB Layout—Layer 3 1.0” Figure 6. MAX16929 EV Kit PCB Layout—Solder Side __________________________________________________________________ Maxim Integrated Products   7 MAX16929 Evaluation Kit Evaluates: MAX16929 Ordering Information PART TYPE MAX16929EVKIT# EV Kit #Denotes RoHS compliant. __________________________________________________________________ Maxim Integrated Products   8 MAX16929 Evaluation Kit Evaluates: MAX16929 Revision History REVISION NUMBER REVISION DATE 0 4/11 DESCRIPTION Initial release PAGES CHANGED — 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 ©  2011 Maxim Integrated Products 9 Maxim is a registered trademark of Maxim Integrated Products, Inc.