MAX17115EVKIT+

19-5105; Rev 0; 12/09 MAX17115 Evaluation Kit The MAX17115 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that provides the voltages and features required for thin-film transistor (TFT), liquidcrystal display (LCD) applications. The EV kit contains a high-performance step-up regulator, a high-accuracy, high-voltage low-dropout (LDO) linear regulator, a positive single-stage charge pump, a negative single-stage charge pump with a shunt voltage regulator, and a highperformance buffer amplifier. Features S +4.5V to +5.5V Input Range S Output Voltages _+16V at 500mA (Step-Up Switching Regulator) _+15V at 20mA (High-Voltage LDO Linear Regulator) _+30V at 20mA (Positive Charge Pump) _-6.8V at 20mA (Negative Charge Pump with a Shunt Voltage Regulator, D5) S Adjustable Output Voltages (External Resistors) S Selectable Frequency (640kHz/1.2MHz) S Two High-Speed Operational Amplifiers S Low-Profile Surface-Mount Components S Fully Assembled and Tested Ordering Information PART TYPE MAX17115EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION C1, C2 C3, C4 QTY DESCRIPTION 2 10FF Q10%, 6.3V X5R ceramic capacitors (0805) Murata GRM21BR60J106K 2 10FF Q20%, 25V X5R ceramic capacitors (1206) Murata GRM31CR61E106K TDK C3216X5R1E106M DESIGNATION 2 C13 1 2.2FF Q10%, 25V X5R ceramic capacitor (0805) Murata GRM219R61E225K TDK C2012X5R1E225K C15 0 Not installed, capacitor (0603) 1 1FF Q10%, 16V X5R ceramic capacitor (0603) Murata GRM188R61C105K TDK C1608X5R1C105K 1 560pF Q5%, 50V X7R ceramic capacitor (0603) Murata GRM1885C1H561J TDK C1608C0G1H561J C12, C18 0 Not installed, through-hole capacitor (OSCON-B) C6 0 Not installed, capacitor (1206) C16 6 0.1FF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H104K TDK C1608X7R1H104K 1FF Q10%, 25V X5R ceramic capacitors (0805) Murata GRM216R61E105K TDK C2012X5R1E105K C17 C9, C10 2 DESCRIPTION .033FF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H333K TDK C1608X7R1H333K C5 C7, C8, C11, C14, C19, C20 QTY ________________________________________________________________ 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. Evaluates: MAX17115 General Description Evaluates: MAX17115 MAX17115 Evaluation Kit Component List (continued) DESIGNATION D1 D2, D3 QTY 1 2 DESCRIPTION 3A, 30V Schottky diode (M-Flat) Toshiba CMS01 Toshiba CMS02 D5 1 EN, FREQ, HVS_EN, VDET 4 PCB mini test points JU1–JU4 4 2-pin headers L1 1 3FH, 3A inductor Sumida CDRH6D28-3R0 1 QTY R1, R7 2 150kI Q1% resistors (0603) R2, R9, R12 3 100kI Q1% resistors (0603) R3–R6 4 100kI Q5% resistors (0603) 200mA, 100V dual diodes (SOT23) Fairchild MMBD4148SE (Top Mark: D4) Central Semi CMPD7000 Lead Free (Top Mark: C5C) 6.8V zener diode (SOT23) Diodes, Inc BZX84C6V8 (Top Mark: KZ5) Q1 DESIGNATION -20V, 0.063I p-channel MOSFET (SC70 PowerPAK) Vishay SiA443DJ Vishay SiA411DJ DESCRIPTION R8 1 20kI Q5% resistor (0603) R9, R11 2 110kI Q1% resistors (0603) R10 1 10kI Q1% resistor (0603) R13 1 137kI Q1% resistor (0603) R14 1 11.5kI Q1% resistor (0603) R15 1 1kI Q5% resistor (0603) R16 1 47.5kI Q1% resistor (0603) R17 1 5.6I Q5% resistor (0603) R18 1 390I Q5% resistor (0603) U1 1 Internal switch boost regulator (32 TQFN-EP*) Maxim MAX17115ETM+ — 4 Shunts (see Tables 1–4) — 1 PCB: MAX17115 EVALUATION KIT+ *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Central Semiconductor Corp. 631-435-1110 www.centralsemi.com Diodes, Inc. 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 Sumida Corp. 847-545-6700 www.sumida.com TDK Corp. 847-803-6100 www.component.tdk.com Toshiba America Electronic Components, Inc. 949-623-2900 www.toshiba.com/taec Vishay 402-563-6866 www.vishay.com Note: Indicate that you are using the MAX17115 when contacting these component suppliers. 2   _______________________________________________________________________________________ MAX17115 Evaluation Kit Recommended Equipment least 20mA. The gate-off (VGOFF) supply voltage is configured for a -6.8V output providing at least 20mA. The high-performance buffer amplifier is configured for a +6.4V output providing a 200mA output short-circuit current. Procedure Step-Up Regulator Output-Voltage Selection (VMAIN) • +4.5V to +5.5V DC power supply • Voltmeter The MAX17115 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 all jumpers are in their default positions (see the Jumper Selection section). The output voltage of the main step-up regulator is set by connecting a resistive voltage-divider from the output (VMAIN) to AGND with the center tap connected to FB. Select R14 in the 10kI to 50kI range. Calculate R13 with the following equation: 2) Connect the positive terminal of the power supply to the VIN pad. Connect the negative terminal of the power supply to the PGND pad. V  R13 = R14 ×  VMAIN − 1  VFB  3) Turn on the power supply and verify that the step-up switching regulator output (VMAIN) is +16V. where VFB, the step-up regulator’s feedback set point, is 1.24V. 4) Verify that the LDO linear regulator output (VREF_O) is approximately +15V. High-Voltage LDO Linear Regulator Output-Voltage Selection (VREF_O) 5) Verify that the gate-on supply (VGON) is approximately +30V. 6) Verify that the gate-off supply (VGOFF) is approximately -6.8V. 7) Verify that the buffer amplifier (OPO) is approximately +6.4V. Detailed Description of Hardware The MAX17115 EV kit contains a high-performance stepup regulator, a high-accuracy, high-voltage low-dropout (LDO) linear regulator, a positive single-stage charge pump, a negative single-stage charge pump with a shunt voltage regulator, and a high-performance buffer amplifier. The EV kit operates from a DC power supply between +4.5V and +5.5V. Although the MAX17115 IC has a +2.5V to +5.5V input supply range, the EV kit is optimized to operate from a DC supply voltage of +4.5V to +5.5V. The step-up switching regulator is configured for a +16V output providing at least 500mA. The high-accuracy, high-voltage LDO linear regulator is configured for a +15V output providing at least 20mA. The gate-on (VGON) supply voltage is configured for a +30V output providing at The output voltage of the high-accuracy LDO linear regulator is set by connecting a resistive voltage-divider from the output (VREF_O) to AGND with the center tap connected to VREF_FB. Select R10 in the 10kI to 50kI range. Calculate R9 with the following equation:  V  R9 = R10 ×  VREF_0 − 1 V   VREF_FB  where VVREF_FB, the LDO linear regulator’s feedback set point, is 1.24V. Buffer Amplifier Output-Voltage Selection (OPO) The output voltage of the buffer amplifier is set by connecting a resistive voltage-divider from the output (VMAIN) to AGND with the center tap connected to OPI. Calculate R1 with the following equation: V  R1 = R2 ×  VMAIN − 1 V  OPI  where VOPI, the buffer amplifier’s noninverting input, equals the desired buffer output (OPO). _______________________________________________________________________________________   3 Evaluates: MAX17115 Quick Start Evaluates: MAX17115 MAX17115 Evaluation Kit Jumper Selection Several jumper settings in the following tables illustrate features of the MAX17115 EV kit. Enable Control Input (EN) Connect EN to AGND to disable the step-up switching regulator operation. Connect EN to VIN to enable the boost operation. See Table 1 for jumper JU1 functions. Frequency Select Input (FREQ) Connect FREQ to AGND to select the step-up regulator’s 640kHz operating frequency. Connect FREQ to VIN to select the step-up regulator’s 1.2MHz operating frequency. See Table 2 for jumper JU2 functions. Table 1. Jumper JU1 Functions High-Voltage Stress Control Input (HVS_EN) Connect HVS_EN to VIN to turn on the internal switch between RHVS and AGND. Connect HVS_EN to AGND to make the RHVS pin high-impedance. See Table 3 for jumper JU3 functions. High-Voltage Switch Control Input (VFLK) When VFLK is connected to VIN, the high-voltage switch between VGH and VGHM is on and the high-voltage switch between VGHM and DRN is off. When VFLK is connected to AGND, the switch between VGH and VGHM is off and the switch between VGHM and DRN is on. See Table 4 for jumper JU4 functions. Table 3. Jumper JU3 Functions SHUNT POSITION EN PIN EV KIT OUTPUTS SHUNT POSITION HVS_EN PIN RHVS Installed EN connected to AGND Outputs disabled (VMAIN = 0V) Installed HVS_EN connected to VIN RHVS connected to AGND Not installed* EN connected to VIN through R3 Outputs enabled (VMAIN = 16V) Not installed* HVS_EN connected to AGND through R5 RHVS at high impedance *Default position. *Default position. Table 2. Jumper JU2 Functions Table 4. Jumper JU4 Functions SHUNT POSITION FREQ PIN OPERATION OF FREQUENCY Installed FREQ connected to AGND 640kHz Not installed* FREQ connected to VIN through R4 1.2MHz SHUNT POSITION VFLK VGHM Installed* VFLK connected to VIN VGHM = VGON Not installed VFLK connected to AGND through R6 VGHM = VDRN *Default position. *Default position. 4   _______________________________________________________________________________________ MAX17115 Evaluation Kit Evaluates: MAX17115 Figure 1. MAX17115 EV Kit Schematic _______________________________________________________________________________________   5 Evaluates: MAX17115 MAX17115 Evaluation Kit 1.0” Figure 2. MAX17115 EV Kit Component Placement Guide— Component Side 1.0” Figure 3. MAX17115 EV Kit PCB Layout—Component Side 1.0” Figure 4. MAX17115 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. 6 ©  2009 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.