19-6061 Rev 0 10/11 MAX16928 Evaluation Kit Evaluates: MAX16928 General Description Features The MAX16928 evaluation kit (EV kit) is a fully assembled S 4.5V to 5.5V Input Range and tested surface-mount PCB that provides the voltages S Output Voltages and features required for automotive thin-film transistor 12V Output at 400mA (Boost Converter) (TFT), liquid-crystal display (LCD) applications. The EV 3.3V Output at 500mA (Regulator Controller) kit includes a boost converter, a 3.3V regulator controller 18V Output (Positive-Gate Voltage Regulator) with external npn transistor, two gate voltage regulators, a single-stage positive charge pump, and a single-stage -5.9V Output (Negative-Gate Voltage Regulator) negative charge pump. S High-Frequency Operation The EV kit can operate from 4.5V to 5.5V input voltages 2.2MHz (Boost Converter) and is optimized for automotive TFT-LCD applications. S Single-Stage Positive and Negative Charge Pumps The boost converter is configured for a 12V output that provides at least 400mA. The regulator controller output S Proven PCB Layout is 3.3V and provides at least 500mA. The positive-gate S Fully Assembled and Tested voltage regulator provides 18V output and the negative- gate voltage regulator provides -5.9V. Ordering Information appears at end of data sheet. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 4.7FF Q20%, 25V X7R ceramic 10FF Q20%, 25V X7R ceramic C26 1 capacitor (1206) C1, C4, C22, capacitors (1210) 4 Murata GRM31CR71E475M C24 Murata GRM32DR71E106M TDK C3225X7R1E106M 200mA, 100V dual-series diodes D1, D6 2 (SOT23) 0.1FF Q10%, 50V X7R ceramic Fairchild MMBD4148SE C2, C3, C5, capacitors (0603) 6 C14, C25, C27 Murata GRM188R71H104K 3A, 30V Schottky diode (M Flat) D2 1 TDK C1608X7R1H104K Toshiba CMS02(TE12L,Q) 2.2FF Q10%, 10V X7R ceramic 2A, 50V fast-recovery diode C6 1 capacitor (0805) D4 1 (SMB) Murata GRM21BR71A225K Fairchild ES2A JU1, JU2 2 3-pin headers 220pF Q10%, 50V X7R ceramic C7 1 capacitor (0603) 3.3FH, 9A power inductor L1 1 Murata GRM188R71H221K Wrth 744314330 22pF Q5%, 50V C0G ceramic -20V, -2.4A p-channel MOSFET C8 1 capacitor (0603) P1 1 (3 SuperSOT) Murata GRM1885C1H220J Fairchild FDN304P npn bipolar transistor (SOT23) 150pF Q5%, 50V C0G ceramic Q1 1 Fairchild MMBT3904 C9 1 capacitor (0603) Murata GRM1885C1H151J npn high-gain transistor (SOT89) Q2 1 Zetex ZXTN25012EZ 1FF Q10%, 25V X7R ceramic R1 1 30kI Q1% resistor (0603) C12, C13, C21 3 capacitors (0805) Murata GRM21BR71E105K R2, R13 2 6.8kI Q5% resistors (0603) R5 1 180kI Q5% resistor (0603) C23, C37, C38, Not installed, ceramic capacitors 0 C39 (1210) Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX16928 Evaluation Kit Evaluates: MAX16928 Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION R6 1 169kI Q1% resistor (0603) R15 1 51.1kI Q1% resistor (0603) R18 1 R7 1 10kI Q1% resistor (0603) 33I Q5% resistor (0603) R9, R16, R17 3 10kI Q5% resistors (0603) TFT-LCD power supply U1 1 (20 TSSOP-EP ) R10 1 100kI Q5% resistor (0603) Maxim MAX16928AGUP/V+ R11 1 133kI Q1% resistor (0603) R12 1 2 Shunts 12.1kI Q1% resistor (0603) R14 1 316kI Q1% resistor (0603) PCB: MAX16928 EVALUATION 1 KIT Component Suppliers SUPPLIER PHONE WEBSITE Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Toshiba America Electronic Components, Inc. 949-623-2900 www.toshiba.com/taec Wrth 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 MAX16928 when contacting these component suppliers. 8) Verify that the positive-gate voltage regulator (GH) is Quick Start approximately 18V. Recommended Equipment 9) Verify that the negative-gate voltage regulator (VGL) MAX16928 EV kit is approximately -5.9V. 4.5V to 5.5V, 2A DC power supply Detailed Description of Hardware Voltmeter Jumper Settings Procedure Several jumper settings in the following tables illustrate The EV kit is fully assembled and tested. Follow the steps features of the EV kit. below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. Boost Circuitry and 3.3V Regulator 1) Verify that a shunt is installed on pins 1-2 on jumper Controller Enable Input (JU1) JU1. The devices ENP pin enables the boost circuitry and the 3.3V regulator controller. For normal operation, drive ENP 2) Verify that a shunt is installed on pins 2-3 on jumper high by installing a shunt on pins 1-2 on jumper JU1. For JU2. shutdown mode, drive ENP low by installing a shunt on 3) Connect the positive terminal of the power supply to pins 2-3 on JU1. See Table 1 for JU1 configuration. the INA PCB pad. Connect the negative terminal of the power supply to the PGNDP PCB pad closest to INA. Table 1. Jumper Functions (JU1) 4) Set the power-supply INA to 5V. SHUNT VSH AND 3.3V 5) Turn on the power supply. ENP PIN POSITION OUTPUTS 6) Verify that the step-up switching regulator (VSH) 1-2* Connected to INA Enabled is 12V. 2-3 Connected to GND Disabled 7) Verify that the 3.3V regulator is 3.3V. *Default position. Maxim Integrated Products 2