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User Manual for DIODES models including: AP63205QWU-EVM 32V 2A Synchronous DC-DC Buck Converter with Enhanced EMI Reduction, AP63205QWU-EVM, 32V 2A Synchronous DC-DC Buck Converter with Enhanced EMI Reduction, 32V 2A Synchronous DC-DC Buck Converter, DC-DC Buck Converter, Buck Converter, Converter
DC-DC
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DocumentDocumentAP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction DESCRIPTION The AP63205Q is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V. It fully integrates a 125m high-side power MOSFET and a 68m lowside power MOSFET to provide highefficiency step-down DC-DC conversion. The AP63205Q device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63205Q is a fixed output buck converter with Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, reducing EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further reduces highfrequency radiated EMI noise caused by MOSFET switching. The device is available in a low-profile, TSOT26 package. FEATURES VIN 3.8V to 32V 2A Continuous Output Current 0.8V ±1% Reference Voltage 22µA Low Quiescent Current (Pulse Frequency Modulation) 1.1MHz Switching Frequency Supports Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) Proprietary Gate Driver Design for Efficient EMI Reduction Frequency Spread Spectrum (FSS) to Reduce EMI Low-Dropout (LDO) Mode Precision Enable Threshold to Adjust UVLO Protection Circuitry o Undervoltage Lockout (UVLO) o Cycle-by-Cycle Peak Current Limit o Thermal Shutdown AP63205QWU-EVM Rev. 1 1 of 8 www.diodes.com July 2023 © Diodes Incorporated FUNCTIONAL BLOCK AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction Figure 1. Functional Block Diagram ABSOLUTE MAXIMUM RATINGS Symbol VIN VSW VBST VFB VEN TST TJ TL Parameter Supply Voltage Switch Node Voltage Bootstrap Voltage Feedback Voltage Enable/UVLO Voltage Storage Temperature Junction Temperature Lead Temperature Rating -0.3 to +35.0 (DC) -0.3 to +40.0 (400ms) -1.0 to VIN + 0.3 (DC) -2.5 to VIN + 2.0 (20ns) VSW - 0.3 to VSW + 6.0 -0.3 to +6.0 -0.3 to +35.0 -65 to +150 +150 +260 AP63205QWU-EVM Rev. 1 2 of 8 www.diodes.com Unit V V V V V °C °C °C July 2023 © Diodes Incorporated AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction ESD Susceptibility HBM CDM Human Body Mode Charge Device Model RECOMMENDED OPERATING CONDITIONS Symbol VIN TA TJ Parameter Supply Voltage Operating Ambient Temperature Range Operating Junction Temperature Range 2000 1000 Min 3.8 -40 -40 V V Max Unit 32 V +125 °C +150 °C EVALUATION BOARD Figure 2. AP63205QWU-EVM AP63205QWU-EVM Rev. 1 3 of 8 www.diodes.com July 2023 © Diodes Incorporated AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction QUICK START GUIDE The AP63205QWU-EVM has a simple layout and allows access to the appropriate signals through test points. To evaluate the performance of the AP63205QWU, follow the procedure below: 1. For evaluation board configured at VOUT=5V, connect a power supply to the input terminals VIN and GND. Set VIN to 12V. 2. Connect the positive terminal of the electronic load to VOUT and negative terminal to GND. 3. For Enable, place a jumper to "H" position to enable IC. Jump to "L" position to disable IC. 4. The evaluation board should now power up with a 5V output voltage. 5. Check for the proper output voltage of 5V (±1%) at the output terminals VOUT and GND. Measurement can also be done with a multimeter with the positive and negative leads between VOUT and GND. 6. Set the load to 2A through the electronic load. Check for the stable operation of the SW signal on the oscilloscope. Measure the switching frequency. MEASUREMENT/PERFORMANCE GUIDELINES: 1) When measuring the output voltage ripple, maintain the shortest possible ground lengths on the oscilloscope probe. Long ground leads can erroneously inject high frequency noise into the measured ripple. 2) For efficiency measurements, connect an ammeter in series with the input supply to measure the input current. Connect an electronic load to the output for output current. SETTING OUTPUT VOLTAGE: Setting the output voltage: The AP63205Q is a fixed output buck converter. The output voltage is 5V. Connect VFB pin to output directly as schematic shown. AP63205QWU-EVM Rev. 1 4 of 8 www.diodes.com July 2023 © Diodes Incorporated EVALUATION BOARD SCHEMATIC AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction Figure 3. AP63205QWU-EVM Schematic BILL OF MATERIALS for AP63205QWU-EVM (VOUT=5V) Item Value C1 C2 10Uf C3 0.1Uf Type X7R, Ceramic/1206 Ceramic/0603 Rating 50V 50V Description Input CAP Input CAP Input CAP C4 100pF Ceramic/0603 100V Feedback CAP C5 0.1Uf Ceramic/0603 50V C6 22Uf X8L, Ceramic/1206 16V C7 22Uf X8L, Ceramic/1206 16V C8 L1 4.7µH R1 R2 R3 0 0603 1% R4 H EN L U1 AP63205QWU Bootstrap CAP Output CAP Output CAP Output CAP Inductor Bootstrap RES Wurth Electronics TSOT23-6 AP63205QWU-EVM Rev. 1 5 of 8 www.diodes.com Description open CGA5L1X7R1H106K160AC GCM188L81H104KA57 GCM1885G2A101JA16 GCM188L81H104KA57 CGA6P1X8L1C226M250AC CGA6P1X8L1C226M250AC open Panasonic ETQP3M4R7KVP open open ERJ-3GEY0R00V open 61304011121 Diodes BCD July 2023 © Diodes Incorporated AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction TYPICAL PERFORMANCE CHARACTERISTICS Figure 3. Efficiency vs Output Current Figure 4. Output Ripple for VIN=12V, VOUT=5.0V, IOUT=50mA AP63205QWU-EVM Rev. 1 6 of 8 www.diodes.com July 2023 © Diodes Incorporated AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction Figure 5. Output Ripple for VIN=12V, VOUT=5.0V, IOUT=2A AP63205QWU-EVM Rev. 1 7 of 8 www.diodes.com July 2023 © Diodes Incorporated AP63205QWU-EVM 32V, 2A, Synchronous DC-DC Buck Converter With Enhanced EMI Reduction IMPORTANT NOTICE 1. DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. The Information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes' products described herein and application examples. Diodes does not assume any liability arising out of the applicati on or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who design with Diodes' products. Diodes' products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for (a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of Diodes' products for their intended applications, (c) ensuring their applicat ions, which incorporate Diodes' products, comply the applicable legal and regulatory requirements as well as safety and functional-safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality control t echniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications. 3. Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or product s described herein will assume all risks and liabilities associated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes' websites , harmless against all damages and liabilities. 4. Products described herein may be covered by one or more United States, international or foreign patents and pending patent applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties (including third parties whose products and services may be described in this document or on Diodes' website) under this document. 5. 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Notwithstanding the foregoing, Diodes reserves the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes. 8. Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion hereof) is prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such unauthorized use. 9. This Notice may be periodically updated with the most recent version available at https://www.diodes.com/about/company/termsand-conditions/important-notice The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners. © 2023 Diodes Incorporated. All Rights Reserved. www.diodes.com AP63205QWU-EVM Rev. 1 8 of 8 www.diodes.com July 2023 © Diodes Incorporated