MP2360DG

EV2360DG-00B 1.8A, 24V, 1.4MHz Step-Down Converter in 2mm x 2mm QFN8 Evaluation Board The Future of Analog IC Technology DESCRIPTION The EV2360DG-00B is the evaluation board for the MP2360, a monolithic non-synchronous step-down switch mode converter with an integrated power MOSFET. The MP2360 achieves 1.8A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The MP2360 is available in a 2mm x 2mm QFN8 package. FEATURES • • • • • • • • • • • 2.5A Peak Output Current 1.8A Continous Output Current Wide 4.5V to 24V Operating Input Range Output Adjustable from 0.8V to 15V Ultra Compact 2mmx2mm QFN8 Package Fully Assembled and Tested Broadband Communications Equipment Digital Entertainment Systems Distributed Power Systems Battery Chargers Pre-Regulator for Linear Regulators APPLICATIONS “MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value 4.5 – 24 3.3 1.8 Units V V A EV2360DG-00B EVALUATION BOARD Efficiency vs Load Current 100 90 VOUT = 3.3V VOUT = 2.5V EFFICIENCY (%) 80 70 60 VIN = 12V (L x W x H) 1.8” x 1.6” x 0.4” (4.5cm x 4.0cm x 1.0cm) Board Number EV2360DG-00B MPS IC Number MP2360DG 50 0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) EV2360DG-00B Rev. 1.0 8/21/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. 1 EV2360DG-00B – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER in 2x2 QFN8 EV BOARD EVALUATION BOARD SCHEMATIC D2 1N4148 (Optional) VIN GND 4 2 3 IN BS 7 C3 22nF EN D3 1N4148 (Optional) C6 NS VOUT 3.3V GND EN MP2360 SW D1 B230A 5 GND 6 FB U1 EV2360DG-00B BILL OF MATERIALS Qty 1 1 1 2 1 1 1 1 1 1 1 2 1 Ref C1 C2, C5 C3 C4 C6 R1 R2 R3 R4 L1 D1 D2, D3 U1 Description Ceramic Capacitor, 25V, X7R Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 6.3V, X5R Not Stuffed, Optional 49.9kΩ Film Resistor, 1% 16.2kΩ Film Resistor, 1% 100kΩ Film Resistor, 5% 0Ω Film Resistor, 5% 4.7µH Inductor, 3.3A, DS84LC Diode Schottky, 30V, 2A Not Stuffed, Optional DC/DC Converter Value 10µF 0.1µF 22nF 22µF Package 1210 805 603 1210 603 603 603 603 SMD SMA QFN8 Manufacturer TDK TDK TDK TDK Panasonic Panasonic Panasonic Panasonic Toko Diodes Inc MPS Manufacturer P/N C3225X7R1E106M C2012X7R1H104K C1608X7R1H223K C3225X5R0J226M ERJ-3EKF4992V ERJ-3EKF1622V ERJ-3GEYJ104V ERJ-3GEY0R00V B1015AS-4R7N B230A-13 MP2360DG EV2360DG-00B Rev. 1.0 8/21/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. 2 EV2360DG-00B – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER in 2x2 QFN8 EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Layer EV2360DG-00B Rev. 1.0 8/21/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. 3 EV2360DG-00B – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER in 2x2 QFN8 EV BOARD QUICK START GUIDE 1. Connect the positive terminal of the load to VOUT pin, and the negative terminal of the load to GND pin. 2. Preset the power supply output to 4.5V – 24V and turn off the power supply. 3. Connect the positive terminal of the power supply output to the VIN pin and the negative terminal of the power supply output to the GND pin. 4. Turn the power supply on. The board will automatically startup. 5. To use the Enable function, apply a digital input to EN pin. Drive EN higher than 1.2V to turn on the regulator, drive EN less than 0.4V to turn it off. 6. The output voltage VOUT can be changed by varying R1. Calculate the new values by the following formula: ⎞ ⎛V R1 = R2 × ⎜ OUT − 1⎟ ⎟ ⎜ 0.81 ⎠ ⎝ Where R2 = 16.2kΩ Example: For VOUT = 3.3V: ⎛ 3 .3 ⎞ R1 = 16.2kΩ × ⎜ − 1⎟ = 49.8kΩ ⎝ 0.81 ⎠ Therefore, use a 49.9kΩ standard 1% value resistor. NOTICE: The information in this document is subject to change without notice. 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. EV2360DG-00B Rev. 1.0 8/21/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. 4