EVQ3426-L-00A The Future of Analog IC Technology 6A, 35V Boost Converter with Programmable Switching Frequency and UVLO Evaluation Board DESCRIPTION FEATURES The MPQ3426 is a current-mode step-up converter with a 6A, 90mΩ internal switch that provides a highly efficient regulator with a fast response. The MPQ3426 features a programmable frequency of up to 2MHz that allows for easy filtering and reduces noise. An external compensation pin gives the user flexibility in setting loop dynamics, and uses small, low-ESR, ceramic output capacitors. Soft-start results in a small inrush current and can be programmed with an external capacitor. The MPQ3426 operates from an input voltage as low as 3.2V and can generate up to a 35V output. The MPQ3426’s features include under-voltage lockout, current limiting, and thermal overload protection. The MPQ3426 is available in a low profile 14-pin 3mm×4mm QFN package with an exposed pad. • • • • • • • • • 6A, 90mΩ, 45V Power MOSFET Uses Very Small Capacitors and Inductors Wide Input Range: 3.2V to 22V Output Voltage as High as 35V Programmable fsw: 300kHz to 2MHz Programmable UVLO, Soft-Start, UVLO Hysteresis Micropower Shutdown <1μA Thermal Shutdown 160°C Available in 14-Pin 3mm×4mm QFN Package APPLICATIONS • • • Telecom—Power Supplies Audio—Microphone and Tuner Bias Automotive All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value 6-9 12 2 Units V V A EVQ3426-L-00A EVALUATION BOARD 100 95 90 85 80 (L x W x H) 2.5” x 2.5” x 0.4” (6.35cm x 6.35cm x 1.0cm) Board Number EVQ3426-L-00A IC Number MPQ3426DL 75 70 0.01 0.1 1 EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 10 1 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO EVALUATION BOARD SCHEMATIC D1 30V, 5A VOUT VIN 1 VIN2 GND CN1 2 GND PGND 4 VDD R2 178k FB 13 AGND COMP 1 R3 20k 11 EP 15 PGND PGND 10 R5 66.5k 8 R4 43.2k R6 15k PGND PGND C8 NS SS PGND 12 MPQ3426 PGND FSET 9 14 EN PGND 7 EN 2 PGND PGND SW 6 5 SW U1 VIN R1 100k SW PGND 3 PGND R7 0 PGND PGND PGND C6 NS PGND EVQ3426-L-00A BILL OF MATERIALS Qty 1 1 1 1 1 1 1 1 1 2 1 1 1 1 Ref R1 R2 R3 R4 R5 R6 R7 C1 C2 C3,C4 C5 C6,C8 C7 C9 Value 100k 178k 20k 43.2k 66.5k 15k 0 10μF 0.1μF 22μF 33nF NC 5.6nF 1.0μF 1 L1 4.7μH 1 D1 1 U1 SS5P3 MPQ342 6 Description Film Res,5% Film Res,1% Film Res,1% Film Res,5% Film Res,1% Film Res,5% Film Res,5% Ceramic Cap,25V,X7R Ceramic Cap,16V,X7R Ceramic Cap,25V,X7R Ceramic Cap,50V,X7R Ceramic Cap,50V,X7R Ceramic Cap,25V,X5R IR=15.5A, Isat=17A, Rdc=6.35mOhm Schottky diode 30V 5A Boost converter Package 0603 0603 0603 0603 0603 0603 0603 1210 0805 1210 0603 Manufacturer ROYAL ROYAL ROYAL ROYAL ROYAL ROYAL ROYAL muRata muRata muRata TDK Manufacturer P/N RL0603FR-07100KL RL0603FR-07178KL RL0603FR-0720KL RC0603FR-0743K2L RC0603FR-0766K5L RL0603FR-0715KL RC0603FR-070RL GRM32DR71E106KA12L GRM219R71C104KA01D GRM32ER71E226KE15L C1608X7R1H333K 0603 0805 muRata muRata GRM188R71H562KA01D GRM216R61E105KA12D Wurth 744 332 047 0 TO-277A Vishay SS5P3 QFN MPS MPQ3426 EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO EVB TEST RESULTS Performance waveforms are tested on the evaluation board. 100 0.2 0.2 95 0.1 0.1 90 0.0 0.0 85 -0.1 -0.1 80 -0.2 -0.2 75 -0.3 -0.3 70 0.01 0.1 1 10 -0.4 -0.4 5.5 6 6.5 7 7.5 8 8.5 9 9.5 0 50 1.5 900 40 1.4 800 30 1.3 700 20 1.2 600 10 1.1 500 0 0 0.5 1 1.5 2 2.5 1.0 -40 10 3.2 9 3.0 8 2.8 7 2.6 6 2.4 5 -40 -10 20 50 80 110 140 2.2 -40 -10 20 50 80 110 140 0.3 0.6 400 -40 -10 0.9 1.2 1.5 1.8 2.1 20 50 80 110 140 20 50 80 110 140 800 700 Rising 600 500 Falling 400 -10 20 50 80 110 140 300 -40 -10 EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VOUT/AC 10mV/div. VIN 5V/div. VSW 10V/div. IL 500mA/div. VOUT/AC 50mV/div. VIN 5V/div. VSW 10V/div. VOUT 5V/div. VIN 5V/div. VSW 10V/div. IL 5A/div. IL 5A/div. VOUT 5V/div. VIN 5V/div. VOUT 5V/div. VIN 5V/div. VOUT 5V/div. VIN 5V/div. VSW 10V/div. VSW 10V/div. VSW 10V/div. IL 5A/div. IL 5A/div. IL 5A/div. VOUT 5V/div. VEN 5V/div. VOUT 5V/div. VEN 5V/div. VOUT 5V/div. VEN 5V/div. VSW 10V/div. VSW 10V/div. VSW 10V/div. IL 5A/div. IL 5A/div. IL 5A/div. EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VOUT 5V/div. VEN 5V/div. VSW 10V/div. IL 5A/div. VOUT/AC 500mV/div. VOUT/AC 500mV/div. IL 1A/div. IL 1A/div. EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Bottom Layer Figure 3—Bottom Layer EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 6 MPQ3426-6A, 35V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO QUICK START GUIDE The output voltage of this board is set to 12V. The frequency is set to 600kHz. The board layout accommodates most commonly used inductors and output capacitors. 1. Preset the power supply to 6V ≤ VIN ≤ 9V. 2. Turn the power supply off. 3. Connect the power supply terminals to: a. Positive (+): VIN b. Negative (-): GND 4. Connect the load to: a. Positive (+): VOUT b. Negative (-): GND 5. Make sure the CN1 jumper is installed 6. Turn the power supply on after making the connections. 7. The MPQ3426 is enabled on the evaluation board once VIN is applied. 8. The output voltage VOUT can be changed by varying R2. Calculate the new value using the formula: R2 = ( VOUT − 1) × R3 VFB Where VFB = 1.225V and R3=20kΩ -0.86 9. The frequency can be changed by adjusting R5. The formula is: FSET = 23 × (R5 ) Where FSET is in MHz and R5 is in kΩ 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. EVQ3426-L-00A Rev.1.0 www.MonolithicPower.com 7/1/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7