Evaluates: MAX15022 19-4101 Rev 0 5/08 MAX15022 Evaluation Kit General Description Features The MAX15022 evaluation kit (EV kit) circuit demon- 4.5V to 5.5V Input Range strates the MAX15022 IC, which integrates two high- Regulator Outputs performance PWM switching step-down regulators and 3.3V at 4A two low-dropout (LDO) controllers. Each controller and 1.5V at 2A regulator features independent enable controls for power-up sequence operation. The EV kit is designed 2MHz Switching Frequency to operate from a single 4.5V to 5.5V DC power supply. LDO Outputs The synchronous step-down outputs provide 3.3V/4A 2.5V (Up to 500mA) and 1.5V/2A, and can be configured for power-up 1.2V (Up to 500mA) sequencing or tracking operation. The converter switching frequency is set to 2MHz and operates 180 Independent Enable Inputs for All Outputs out-of-phase, reducing input voltage ripple and total Configurable Power-Up Sequencing for Outputs RMS input ripple current. The LDO outputs provide 2.5V and 1.2V, at up to 500mA each. Each LDO con- Configurable Power-Up Tracking for Regulators troller is powered from either the input power source or (VOUT1, VOUT2) one of the regulator outputs. Thermal Shutdown and Hiccup-Mode Short- Circuit Protection Ordering Information Fully Assembled and Tested PART TYPE MAX15022EVKIT+ EV Kit +Denotes lead-free and RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 150F 20%, 10V aluminum 68pF 5%, 50V C0G ceramic electrolytic capacitor capacitor (0603) C15 1 C1 1 (6.6mm x 6.6mm) Murata GRM1885C1H680J Panasonic EEEFK1A151P 270pF 5%, 50V C0G ceramic C17 1 capacitor (0603) 0.1F 10%, 16V X7R ceramic C2, C4, C9, Murata GRM1885C1H271J 6 capacitors (0603) C10, C14, C18 Murata GRM188R71C104K 1F 10%, 10V X7R ceramic capacitors (0805) 10F 10%, 6.3V X7R ceramic C20, C22 2 C3, C8, C11, TDK C2012X7R1A105K 6 capacitors (0805) C12, C19, C21 Murata GRM21BR70J106K Not installed, ceramic capacitors C25, C26 0 180pF 5%, 50V C0G ceramic (0603) C5 1 capacitor (0603) 2200pF 10%, 16V X7R ceramic Murata GRM1885C1H181J C27, C28 2 capacitors (0603) 390pF 5%, 50V C0G ceramic Murata GRM188R71C222K C6 1 capacitor (0603) JU1JU4 4 3-pin headers Murata GRM1885C1H391J 0.47H, 5A inductor 10pF 5%, 50V C0G ceramic L1 1 Vishay IHLP-1616BZ-ER-R47-M-01 C7, C16 2 capacitors (0603) Murata GRM1885C1H100J 1H, 4A inductor L2 1 Vishay IHLP-1616BZ-ER-1R0-M-01 C13, C23, C24 0 Not installed, capacitors (0805) 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.MAX15022 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION R16 1 1k 1% resistor (0603) -20V, 1.5A pnp transistors (SOT223-4) Q1, Q2 2 R17, R21 2 15k 1% resistors (0603) Fairchild Semiconductor BCP69 R20 1 2.55k 1% resistor (0603) R1, R7 2 120 5% resistors (0603) R22 1 47.5k 1% resistor (0603) R2 1 100 1% resistor (0603) R23 1 10.5k 1% resistor (0603) R3 1 23.7k 1% resistor (0603) R25 1 18.2k 1% resistor (0603) R4 1 7.5k 1% resistor (0603) R26 1 10k 1% resistor (0603) R5 1 15.8k 1% resistor (0603) R27, R28 0 Not installed, resistors (1206) R6, R9, R10 3 11.5k 1% resistors (0603) Dual regulator/LDO controller R11 1 1.5k 1% resistor (0603) U1 1 (28 TQFN-EP*) Maxim MAX15022ATI+ R12 1 18.7k 1% resistor (0603) R13 1 15 1% resistor (0603) 4 Shunts (JU1JU4) 1 PCB: MAX15022 Evaluation Kit+ R14, R18 2 24.9k 1% resistors (0603) R15, R19, R24 3 16.5k 1% resistors (0603) *EP = Exposed pad. 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 Panasonic Corp. 714-373-7366 www.panasonic.com TDK Corp. 847-803-6100 www.component.tdk.com Vishay 203-268-6261 www.vishay.com Note: Indicate that you are using the MAX15022 when contacting these component suppliers. 2) Install shunts across pins 1-2 of jumpers JU3 Quick Start (VOUT2 sequences after VOUT1) and JU4 Required Equipment (sequencing mode for outputs VOUT1, VOUT2). Before beginning, the following equipment is needed: 3) Connect the voltmeter positive-terminal inputs to the Adjustable 4.5V to 5.5V, 5A DC power supply VOUT1VOUT4 PCB pads. Four voltmeters 4) Connect the voltmeter negative-terminal inputs to the respective outputs PGND PCB pads. Procedure 5) Connect a DC power supply to the VIN and PGND The MAX15022 EV kit is fully assembled and tested. pads and set the voltage to 5V. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all 6) Enable the power-supply output. connections are completed. 7) Verify that the voltmeters at VOUT1VOUT4 mea- 1) Install shunts across pins 2-3 of jumpers JU1 sure 3.3V, 1.5V, 2.5V, and 1.2V, respectively. (VOUT1 input source for VOUT3) and JU2 (VOUT2 input source for VOUT4). 2 Evaluates: MAX15022