MP2106DQ

EV2106DQ/DK-00A 2.6V to 15V IN, 1.5A OUT Synchronous Buck Converter Evaluation Board The Future of Analog IC Technology GENERAL DESCRIPTION The EV2106DQ/DK-00A is an evaluation board designed to demonstrate the abilities of the MP2106DQ and MP2106DK synchronous buck converters, respectively. It can convert an input voltage with a range of 2.6V to 15V to a lower output voltage from 0.9V while delivering 1.5A to the load. The output voltage is preset to 1.8V, but can be easily be adjusted to other levels from 0.9V. Fault condition protection includes cycle-by-cycle current limiting, thermal shutdown and under voltage lockout. The part’s current mode control, high switching frequency and integrated high-side and low-side power MOSFETs, combined with tiny 10-pin MSOP or QFN packages, provide a solution requiring a minimum of components, board area and cost. FEATURES • • • • • • • • • • • • • Up to 1.5A Continuous Output Current Wide 2.6V to 15V Operating Input Range Internal Power Switches 800KHz Fixed Switching Frequency All Ceramic Input and Output Capacitors Programmable Soft-Start Programmable Input Under Voltage Lockout SOHO Routers, PCMCIA Cards, Mini PCI Handheld Computers PDAs Cellular Phones Digital Still and Video Cameras Small LCD Displays APPLICATIONS “MPS” and “The Future of Analog IC Technology”, are Registered Trademarks of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Current Symbol VIN ILOAD Value 2.6 to 15 1.5 Units V A EV2106DQ/DK-00A EVALUATION BOARD 100 90 80 EFFICIENCY (%) VIN=3.3V 70 60 50 40 30 20 10 0 10 100 1000 LOAD CURRENT (A) 10000 VIN=5V Dimensions (2.4”X x 1.8”Y x 0.4”Z) Board Number EV2106DQ/DK-00A MPS IC Number MP2106DQ/DK MP2106_TAC_EC02 EV2106DQ/DK-00A Rev. 1.3 www.MonolithicPower.com 11/18/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 1 EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD EVALUATION BOARD SCHEMATIC VIN C1 NS 5 R5 NS C6 NS 1 3 7 VIN RUN LX SS 6 BST C3 10nF OFF ON 8 VOUT D1 1N5819 C9 NS MP2106 FB 2 C11 NS COMP VREF SGND PGND C10 10nF C4 NS C5 3.3nF C7 10nF 4 10 9 EV2106_S01 EV2106DQ/DK-00A BILL OF MATERIALS Qty 5 1 1 3 1 1 1 1 1 2 1 1 Ref C1, C4, C6, C9, C11 C2 (1) C8 C3, C7, C10 C5 D1 L1 R1 R2 R3, R4 R5 U1 5µH 10µF 22µF 10nF 3.3nF Value Description Do Not Stuff Ceramic Cap, 10V, X7R Ceramic Cap, 6.3V, X5R Ceramic Cap, 50V, X7R Ceramic Cap, 50V, X7R Schottky Diode, 40V, 1A Inductor, 2.2A 100kΩ Film Res, 5% 6.8kΩ Film Res, 5% 10kΩ Film Res, 1% Do Not Stuff DC-DC Converter QFN10 MPS MP2106DQ SM1210 SM1210 SM0805 SM0805 SMD SM0805 SM0805 SM0805 AVX TDK AVX AVX Sumida Panasonic Panasonic Panasonic 1210ZC106KAT2A C3225X5R0J226M 08055C103KAT2A 08055C332KAT2A 1N5819HW-7 CDRH6D26-5R0 ERJ-6GEYJ104V ERJ-6GEYJ682V ERJ-6ENF1002V Package Manufacturer Manufacturer P/N SOD123 Diodes Inc Note: 1) For VIN > 10V, use a 16V capacitor for C2. EV2106DQ/DK-00A Rev. 1.3 www.MonolithicPower.com 11/18/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 2 EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Silk Layer Figure 4—Bottom Layer EV2106DQ/DK-00A Rev. 1.3 www.MonolithicPower.com 11/18/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 3 EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD QUICK START GUIDE The output voltage of this board is set to 1.8V. The board layout accommodates most commonly used inductors and output capacitors. 1. Attach positive end and negative end of load to OUT and GND pins, respectively. 2. Attach input voltage (2.6V ≤ VIN ≤ 13.5V) and input ground to IN and GND pins, respectively. 3. A pull-up resistor has connected the EN pin to the IN pin, so the MP2106 will startup automatically without applying an external voltage to the EN pin. 4. The output voltage VOUT can be changed by varying R3. Calculate the new value using the formula: R3 = R4 × ( VOUT − 1) VFB where VFB = 0.9V and R4 = 10kΩ. For example, for VOUT = 2.5V: R3 = R4 × ( VOUT 2 .5 V − 1) = 10kΩ × ( − 1) = 17.78kΩ ~ 17.8kΩ VFB 0. 9 V for the closest standard 1% value. See Maximum Duty Cycle limits to determine allowable output voltages. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV2106DQ/DK-00A Rev. 1.3 www.MonolithicPower.com 11/18/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 4