19-5206; Rev 0; 4/10 MAX17117 Evaluation Kit The MAX17117 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that provides the voltages and features required for active-matrix, thin-film transistor (TFT), liquid-crystal display (LCD) applications. The EV kit contains a high-performance step-up regulator, a 350mA low-dropout (LDO) linear regulator, a high-speed operational amplifier (op amp), a positive charge pump for the TFT gate-on supply, a negative charge pump for the TFT gate-off supply, and a 7-output high-voltage, level-shifting scan driver with gate-shading control. The EV kit operates from a DC supply voltage of +2.3V to +5.5V. The step-up switching regulator is configured for a +8.5V output providing at least 250mA from a +2.7V input. The positive charge pump is configured to provide a +23V output providing at least 20mA. The negative charge pump is configured to provide a -6V output providing at least 10mA. The op amp is configured for +4.25V. The high-voltage, level-shifting scan driver with gate-shading control is designed to drive the TFT panel gate drivers. Features S +2.3V to +5.5V Input Range S Output Voltages +8.5V Output at 250mA from a +2.7V Input (Step-Up Switching Regulator) +23V Output at 20mA (Positive Charge Pump) -6V Output at 10mA (Negative Charge Pump) +4.25V High-Current Op Amp Capable of Delivering 200mA (typ) Short-Circuit Output Current S Resistor-Adjustable Switching-Regulator, Op-Amp Output, and LDOO Voltages S High-Voltage Level-Shifting Scan Driver with Gate-Shading Control S 1.2MHz Step-Up Switching Frequency S Fully Assembled and Tested Ordering Information PART TYPE MAX17117EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION C1 C2, C3, C4 C5 C6-C11, C16, C17, C21 QTY DESCRIPTION 1 10FF Q10%, 10V X5R ceramic capacitor (0805) TDK C2012X5R1A106K Murata GRM21BR61A106K 3 10FF Q10%, 16V X5R ceramic capacitors (1206) Murata GRM31CR61C106K TDK C3216X5R1C106K 1 0.22FF Q10%, 50V X7R ceramic capacitor (0805) Murata GRM21BR71H224K TDK C2012X7R1H224K 9 0.1FF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H104K TDK C1608X7R1H104K DESIGNATION QTY DESCRIPTION C12, C13 2 1FF Q10%, 16V X5R ceramic capacitors (0603) Murata GRM188R61C105K TDK C1608X5R1C105K C14 1 100pF Q5%, 50V C0G ceramic capacitor (0603) Murata GRM1885C1H101J C15, C25, C27, C29, C31, C33, C35, C37 8 4700pF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H472K 1 1FF Q10%, 25V X5R ceramic capacitor (0805) Murata GRM21BR71E105K TDK C2012X5R1E105K 1 1000pF Q10%, 50V X7R ceramic capacitor (0603) Murata GRM188R71H102K TDK C1608X7R1H102K C18 C19 ________________________________________________________________ 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: MAX17117 General Description Evaluates: MAX17117 MAX17117 Evaluation Kit Component List (continued) DESIGNATION C20 C22 C23 C24, C26, C28, C30, C32, C34, C36, C38, C39 DTS, LX, POS, RE, RO, SS D1 D2, D3, D4 D5 QTY DESIGNATION QTY 1 3-pin header 1 0.33FF Q10%, 10V X5R ceramic capacitor (0603) Murata GRM188R61A334K TDK C1608X5R1A334K JU1 L1 1 10FH, 1.85A, 74.4mI inductor (6mm x 6mm x 3mm) Sumida CDRH5D28RHPNP-100M P1 0 1 0.22FF Q10%, 25V X5R ceramic capacitor (0603) Murata GRM188R61E224K TDK C1608X5R1E224K Not installed, 100-position rightangle header R1 1 102kI Q1% resistor (0603) 1 0 6 1 3 1 DESCRIPTION 2.2FF Q10%, X5R 25V ceramic capacitor (0805) Murata GRM219R61E225K TDK C2012X5R1E225K R2 1 17.4kI Q1% resistor (0603) R3, R4, R5 3 56.2kI Q1% resistors (0603) R6, R12 2 1kI Q5% resistors (0603) R7, R15, R16, R17 0 Not installed, resistors--short (PC trace) (0603) R8 1 62kI Q5% resistor (0603) R9 1 51.1kI Q1% resistor (0603) R10 1 49.9kI Q1% resistor (0603) R11 1 29.4kI Q1% resistor (0603) R13 1 49.9I Q1% resistor (0603) R14 1 86.6I Q1% resistor (0603) R18-R24 7 100kI Q5% resistors (0603) R25-R38 14 100I Q1% resistors (1210) R39 0 Not installed, resistor (0603) SW1 1 7-position, low-profile, surfacemount DIP switch U1 1 High-voltage PWM IC with level shifters (32 TQFN-EP*) Maxim MAX17117ETJ+ -- 1 Shunt -- 1 PCB: MAX17117 EVALUATION KIT+ Not installed, ceramic capacitors (0603) PCB mini test points 1A, 30V Schottky diode (S-Flat) Central Semi CMMSH1-40 LEAD FREE Nihon EP10QY03 Toshiba CRS02(TE85L,Q,M) 200mA, 100V dual diodes (SOT23) Fairchild MMBD4148SE (Top Mark: D4) Central Semi CMPD7000+ (Top Mark: C5C) 6.2V, 200mW zener diode (SOD323) Fairchild MM3Z6V2B DESCRIPTION *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Central Semiconductor Corp. 631-435-1110 www.centralsemi.com Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Nihon Inter Electronics Corp. 847-843-7500 www.niec.co.jp 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 Note: Indicate that you are using the MAX17117 when contacting these component suppliers. 2 _______________________________________________________________________________________ MAX17117 Evaluation Kit Recommended Equipment * 2.3V to 5.5V, 2A DC power supply * Voltmeters Procedure The MAX17117 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 a shunt is installed across pins 1-2 of jumper JU1. 2) Verify that SW1 DIP switches are in the off position. 3) Connect the positive terminal of the power supply to the VIN pad. Connect the negative terminal of the power supply to the PGND pad. Set VIN to +3V. 4) Turn on the power supply and verify that the step-up switching regulator output (VMAIN) is +8.5V. 5) Verify that the gate-on supply (GHON) is approximately +23V. 6) Verify that the gate-off supply (VGL) is approximately -6V. 7) Verify that the output of the high-speed op amp (VOUT) is approximately +4.25V. 8) Verify that the outputs of the high-voltage scan-driver outputs are approximately -6V (= VGL). Detailed Description of Hardware The MAX17117 EV kit contains a step-up switching regulator, a positive two-stage charge pump, a negative single-stage charge pump, a high-speed op amp, and a high-voltage, level-shifting scan driver with gate-shading control. The EV kit operates from a DC power supply between +2.3V and +5.5V. As configured, the step-up switching regulator (VMAIN) generates a +8.5V output and provides at least 250mA from a +2.7V input. The step-up switching-regulator output voltage can be adjusted up to +15V with different feedback resistors (see the Output-Voltage Selection section). The GHON consists of two positive charge-pump stages to generate approximately +23V and provides up to 20mA. The VGL consists of a single negative chargepump stage configured with a shunt zener diode to generate approximately -6V and provides up to 10mA. Loading GHON and VGL reduces the available VMAIN current proportionally. The op-amp output (VOUT) is fixed to +4.25V or can be reconfigured to other voltages with changes to the voltage-divider resistors (see the Output-Voltage Selection section). The high-voltage, level-shifting scan driver with gateshading control is designed to drive the TFT panel gate drivers. Its seven outputs swing 40V (max) between +35V (max) and -15V (min) and swiftly drives capacitive loads. The driver outputs (STH, CKH1-CKH6) swing between their power-supply rails (GHON and VGL) according to the input logic levels on their corresponding inputs (ST, CK1-CK6) except during a gate-shading period. During a gate-shading period, a CKH_ output driver becomes high impedance, and an internal switch connected between the CKH_ output's capacitive load and either RO or RE closes whenever the state of its corresponding CK_ input is logic-low. This allows a portion of an output's GHON-to-VGL transition to be completed by partially discharging its capacitive load through an external resistor attached to either RO or RE, for a duration set by the gate-shading period. For further details, refer to the High-Voltage Scan Driver section in the MAX17117 IC data sheet. P1 provides an easy interface to connect external circuitry containing the ST and CK1-CK6 logic signals to the EV kit. When driving the ST and CK1-CK6 logic signals through P1, place all SW1 switches in the on position. Table 1. Jumper JU1 Functions SHUNT POSITION ENA PIN EV KIT OUTPUTS 1-2 ENA connected to LDOO through resistor R8 Outputs enabled (VMAIN = +8.5V) 2-3 ENA connected to ground Outputs disabled (VMAIN ~ VIN) *Default position. _______________________________________________________________________________________ 3 Evaluates: MAX17117 Quick Start Evaluates: MAX17117 MAX17117 Evaluation Kit Jumper Selection (JU1) The EV kit incorporates jumper JU1 to control the chipenable control. See Table 1 for jumper JU1 functions. Output-Voltage Selection Step-Up Switching-Regulator Output Voltage (VMAIN) The EV kit's step-up switching-regulator output (VMAIN) is set to +8.5V by feedback resistors R1 and R2. To generate output voltages other than +8.5V (up to +15V), select different external voltage-divider resistors R1 and R2. For instructions on selecting the step-up switching regulator feedback divider resistors for other output voltages, refer to the Output-Voltage Selection section in the MAX17117 IC data sheet. Note that changing the VMAIN voltage setting changes the GHON and VGL charge-pump output voltages. The voltage range of VGL is limited to -15V. The volt- age range of GHON is limited to +35V. The voltage difference between GHON and VGL should not exceed +40V. If VMAIN is set for more than +11V, disconnect the GHON and VGL pins from the charge-pump outputs. If operation of the high-voltage scan driver is desired for VMAIN greater than +11V, power GHON and VGL from an external supply. Op-Amp Output Voltage (VOUT) The EV kit's op amp is configured internally as a unitygain buffer. The voltage at the noninverting input (POS) is set to half of VMAIN by voltage-divider resistors R4 and R5. To set VOUT to other voltages (up to VMAIN), select different divider resistors according to the following equation: VMAIN R4 = R5 x - 1 VOUT 4 _______________________________________________________________________________________ MAX17117 Evaluation Kit Figure 1a. MAX17117 EV Kit Schematic (Sheet 1 of 3) _______________________________________________________________________________________ 5 Evaluates: MAX17117 Evaluates: MAX17117 MAX17117 Evaluation Kit Figure 1b. MAX17117 EV Kit Schematic (Sheet 2 of 3) 6 _______________________________________________________________________________________ MAX17117 Evaluation Kit Evaluates: MAX17117 Figure 1c. MAX17117 EV Kit Schematic (Sheet 3 of 3) _______________________________________________________________________________________ 7 Evaluates: MAX17117 MAX17117 Evaluation Kit 1.0" Figure 2. MAX17117 EV Kit Component Placement Guide--Component Side 1.0" Figure 3. MAX17117 EV Kit PCB Layout--Component Side 8 _______________________________________________________________________________________ MAX17117 Evaluation Kit Evaluates: MAX17117 1.0" Figure 4. MAX17117 EV Kit PCB Layout--Solder Side _______________________________________________________________________________________ 9 MAX17117 Evaluation Kit Evaluates: MAX17117 Revision History REVISION NUMBER REVISION DATE 0 4/10 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. 10 (c) Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc. 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