MAX17121EVKIT+

19-4916; Rev 0; 8/09 MAX17121 Evaluation Kit The MAX17121 evaluation kit (EV kit) is an assembled and tested circuit board that contains all the components necessary to evaluate the MAX17121 IC. The MAX17121 is a dual, high-voltage, level-shifting scan driver to drive the TFT panel integrated gate logic. The driver outputs swing from -30V to +40V. To save power, complementary outputs are provided to allow charge sharing during state changes. The EV kit operates from a DC supply range from +2.2V to +3.6V and consumes 250FA (typ). Features S Two High-Voltage, Level-Shifting Scan Drivers S +2.2V to +3.6V Input Supply Voltage Range (VDD) S -30V to +40V Output Swing S Demonstrates Output Charge Sharing S Evaluates the MAX17121 in 24-Pin, 4mm x 4mm, Thin QFN Package S Fully Assembled and Tested Ordering Information PART TYPE MAX17121EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY C1, C2 C3 C4, C5 C6–C9 DESCRIPTION 2 0.1FF Q10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H104K TDK C1608X7R1H104K 1 1FF Q10%, 10V X5R ceramic capacitor (0603) Murata GRM188R61A105K TDK C1608X5R1A105K 2 4 DESIGNATION QTY CKVBCS1, CKVBCS2, CKVCS1, CKVCS2, DISH 5 Test points, white JU1 1 2-pin header, 0.1in centers R1 1 20kI Q5% resistor (0603) R2–R5 4 200I Q5% resistors (1210) R6–R9 4 200I Q5% resistors (0805) U1 1 High-voltage scan driver (24 TQFN-EP*) Maxim MAX17121ETG+ — 1 Shunt — 1 PCB: MAX17121 EVALUATION KIT+ 1FF Q10%, 50V X7R ceramic capacitors (1206) Murata GRM31MR71H105KA TDK C3216X7R1H105K 0.01FF Q10%, 100V X7R ceramic capacitors (0603) Murata GRM188R72A103K DESCRIPTION *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX17121 when contacting these component suppliers. ________________________________________________________________ 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: MAX17121 General Description Evaluates: MAX17121 MAX17121 Evaluation Kit Quick Start Required Equipment • +3.3V, 100mA DC power supply (VDD) • 7) Verify the CKV_ and CKVB_ logic per the table below at the respective test points: SIGNAL LOGIC STATE +35V, 100mA DC power supply (VON) EN H H H H L STV L H H X • -25V, 100mA DC power supply (VOFF) CPV_ L L ↑ L H X • Voltmeter CKV_ Hi-Z (CS) Toggle VOFF VON VOFF CKVB_ Hi-Z (CS) Toggle VON VOFF VOFF Procedure The MAX17121 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) Connect the +3.3V DC power supply to the VDD and AGND PCB pads. 2) Connect the +35V DC power supply to the VON and AGND PCB pads. 3) Connect the -25V DC power supply to the VOFF and AGND PCB pads. 4) Turn on the power supply. 5) Note that the logic inputs (STV, CPV1, and CPV2) must be set to AGND or VDD. 6) Verify the STVP logic per the table below at the respective test points: SIGNAL EN LOGIC STATE H H H L STV L H H X CPV1 X L H X STVP VOFF VON Hi-Z VOFF Note: H = VDD, L = GND, Hi-Z = high impedance, and X = don’t care. Note: H = VDD, L = GND, ↑ = rising edge, CS = chargeshare state, and X = don’t care. Detailed Description of Hardware The MAX17121 EV kit contains all the components necessary to evaluate the MAX17121 IC. The MAX17121 is a dual, high-voltage, level-shifting scan driver to drive TFT panel integrated gate logic. The drivers’ outputs swing from -30V to +40V and two sets of complementary outputs are provided to allow charge sharing during state changes. The EV kit operates from a DC supply range from +2.2V to +3.6V and consumes 250FA (typ). The MAX17121 EV kit provides PCB pads to connect the logic inputs and scan-driver outputs. Test points are also provided to monitor the charge sharing, EN, and DISH states. Jumper JU1 is provided to enable/disable the MAX17121 device (see Table 1). Table 1. Jumper JU1 Function SHUNT POSITION EN PIN DESCRIPTION Installed Connected to VDD MAX17121 enabled Not installed Connected to ground MAX17121 disabled 2   _______________________________________________________________________________________ MAX17121 Evaluation Kit Evaluates: MAX17121 Figure 1. MAX17121 EV Kit Schematic _______________________________________________________________________________________   3 Evaluates: MAX17121 MAX17121 Evaluation Kit 1.0’’ 1.0’’ Figure 2. MAX17121 EV Kit Component Placement Guide— Component Side Figure 3. MAX17121 EV Kit PCB Layout—Component Side 1.0’’ Figure 4. MAX17121 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. 4 ©  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.