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Owner's Manual for DIODES models including: AP61302QZ6-EVM 2.3v To 5.5v Input 3a Synchronous Buck Converter, AP61302QZ6-EVM, 2.3v To 5.5v Input 3a Synchronous Buck Converter, Synchronous Buck Converter, Buck Converter
Test the input capacitor voltage and output capacitor voltage with a multimeter as input voltage and output voltage. Setting the Output Voltage of AP61302Q.
1 mar 2023 — Features. • Input Range: 2.4V to 5.5V. • Wide Output Voltage Range: 0.6V to VIN. • 3A Continuous Output Current. • 0.6V ± 2% Reference Voltage.
AP61302Q (Buck Converter)
File Info : application/pdf, 10 Pages, 630.54KB
DocumentDocumentAP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Description The DIODES AP61302Q is a 3A, synchronous buck converter with an input voltage range of 2.4V to 5.5V and fully integrates a 70m highside power MOSFET and a 50m low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. Pin Assignments The AP61302Q device is easily used by minimizing the external component count due to its adoption of constant on-time (COT) control to achieve fast transient responses, ease loop stabilization, and low output voltage ripple. Moreover, AP61302Q also features force PWM mode control through EN pin. The device is available in a SOT563 package. Features Input Range: 2.4V to 5.5V Wide Output Voltage Range: 0.6V to VIN 3A Continuous Output Current 0.6V ± 2% Reference Voltage 19µA Ultralow Quiescent Current (Pulse Frequency Modulation) 2.2MHz Switching Frequency Programmable Modulation Mode Through EN o PFM (Vin VEN < 200mV) o PWM Regardless of Output Load ( Vin VEN > 200mV ) Protection Circuitry o Undervoltage Lockout (UVLO) o VIN Overvoltage Protection (OVP) o Peak Current Limit o Valley Current Limit o Thermal Shutdown Applications 5V Input Distributed Power Bus Supplies White Goods and Small Home Appliances FPGA, DSP, and ASIC Supplies Network Video Cameras Wireless Routers Consumer Electronics General Purpose Point of Load Issue 1 March, 2023 © Diodes Incorporated 1 of 10 www .didoes.com Functional Block AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Figure 1. Functional Block Diagram Issue 1 March, 2023 © Diodes Incorporated 2 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Absolute Maximum Ratings (Note 1) (At TA = +25°C, unless otherwise specified.) Symbol VIN VFB VSW VEN TST TJ TL ESD Susceptibility (Note 2) HBM CDM Parameter Supply Pin Voltage Feedback Pin Voltage Switch Pin Voltage Enable Pin Voltage Storage Temperature Junction Temperature Lead Temperature Human Body Model Charged Device Model Rating Unit -0.3 to +6.5 (DC) V -0.3 to + 7.0 (400ms) -0.3 to VIN + 0.3 V -1.0 to VIN + 0.3 (DC) -2.5 to VIN + 2.0 (20ns) V -0.3 to VIN + 0.3 V -65 to +150 °C +160 °C +260 °C 6000 V 1500 V Notes: 1. Stresses greater than the Absolute Maximum Ratings specified above may cause permanent damage to the devic e. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not im plied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. 2. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be take n when handling and transporting these devices. Recommended Operating Conditions (At TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Unit VIN Supply Voltage 2.4 5.5 V VOUT Output Voltage 0.6 VIN V TA Operating Ambient Temperature Range -40 +125 °C TJ Operating Junction Temperature Range -40 +150 °C Quick Start Guide The AP61302QZ6-EVM has a simple layout and allows access to the appropriate signals through test points. To evaluate the performance of the AP61302QZ6, follow the procedure below: 1. For evaluation board configured at VOUT=1.8V, connect a power supply to the input terminals VIN and GND. Set VIN to 5V. 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 1.8V output voltage. 5. Check for the proper output voltage of 1.8V (±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 3A through the electronic load. Check for the stable operation of the SW signal on the oscilloscope. Measure the switching frequency. Issue 1 March, 2023 © Diodes Incorporated 3 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER 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. Test the input capacitor voltage and output capacitor voltage with a multimeter as input voltage and output voltage. Setting the Output Voltage of AP61302Q 1) Setting the output voltage The AP61302Q features external programmable output voltage by using a resistor divider network R1 and R2 as shown in the typical application circuit. The output voltage is calculated as below, VOUT 0.6 R1 R2 R 2 First, select a value for R2 according to the value recommended in the table 1. Then, R2 is determined. The output voltage is given by Table 1 for reference. For accurate output voltage, 1% tolerance is required. Table 1. Resistor selection for output voltage setting Issue 1 March, 2023 © Diodes Incorporated 4 of 10 www .didoes.com Evaluation Board Schematic AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER PCB Top Layout Figure 2. Typical Application Circuit Issue 1 March, 2023 © Diodes Incorporated Figure 3. AP61302QZ6 - EVM - Top Layer 5 of 10 www .didoes.com PCB Bottom Layout AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER EV Board View Figure 4. AP61302QZ6 - EVM - Bottom Layer Issue 1 March, 2023 © Diodes Incorporated Figure 5. AP61302QZ6 EV Board View 6 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Bill of Materials for AP61302QZ6-EVM (VOUT=1.8V) Item Value Type Rating Descriptio n C2 22uF X5R/X7R, Ceramic/0805 10V Input coupling CAP C3 22uF X5R/X7R, Ceramic/0805 10V Output coupling CAP L 1.0uH SMD >5A Inductor R1 200K R2 100K 0805 0805 1% Voltage set RES* 1% R3 100K 0805 1% EN RES* R4 100K 0805 1% PG RES U1 AP61302Q SOT563 Descriptio n TAIYO YUDEN EMK212ABJ106KD-T TAIYO YUDEN EMK212ABJ106KD-T WURTH ELEC 744316100 Diodes BCD Typical Performance Characteristics Figure 6. PFM Efficiency vs. Output Current Issue 1 March, 2023 © Diodes Incorporated 7 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Figure 7. PWM Efficiency vs. Output Current Figure 8. Output Voltage Ripple, IOUT = 50mA Issue 1 March, 2023 © Diodes Incorporated 8 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER Figure 9. Output Voltage Ripple, IOUT =1A Issue 1 March, 2023 © Diodes Incorporated 9 of 10 www .didoes.com AP61302QZ6-EVM 2.3V TO 5.5V INPUT, 3A SYNCHRONOUS BUCK CONVERTER 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 application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who d esign 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 applications, 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 techniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications. 3. 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All other trademarks are the property of their respective owners © 2023 Diodes Incorporated. All Rights Reserved. www.diodes.com Issue 1 March, 2023 © Diodes Incorporated 10 of 10 www .didoes.com