AP63356DV-EVM

AP63356/7/Q-EVM 3.8V TO 32V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION DESCRIPTION The AP63356Q/AP63357Q is a 3.5A, synchronous The AP63356Q/AP63357Q has optimized design buck converter with a wide input voltage range of for Electromagnetic Interference (EMI) reduction. 3.8V to 32V and fully integrates an 74m high- The converter features Frequency Spread side power MOSFET and a 40m low-side power Spectrum (FSS) with a switching frequency jitter of MOSFET to provide high-efficiency step-down 6%, which reduces EMI by not allowing emitted DC/DC conversion. energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver The AP63356Q/AP63357Q device is easily used scheme to resist switching node ringing without by minimizing the external component count due sacrificing MOSFET turn-on and turn-off times, to its adoption of peak current mode control along which reduces high-frequency radiated EMI noise with the integrated compensation network. caused by MOSFET switching. The device is available in a 2x3mm W-QFN2030-13 package. FEATURES Proprietary Gate Driver Design for Best EMI Qualified for Automotive Applications Reduction AEC-Q100 Qualified with the Following Frequency Spread Spectrum (FSS) to Results Reduce EMI o Device Temperature Grade 1: -40C to 125C T Range Power Good Indicator with 5M Internal Pull-up A o Device HBM ESD Classification Level H1C Precision Enable Threshold to Adjust UVLO o Device CDM ESD Classification Level C3B Protection Circuitry VIN 3.8V to 32V o Undervoltage Lockout (UVLO) 3.5A Continuous Output Current o Output Overvoltage Protection (OVP) o Output Undervoltage Protection (UVP) 0.8V 1% Reference Voltage o Cycle-by-Cycle Peak Current Limit 22A Ultralow Quiescent Current (Pulse o Thermal Shutdown Frequency Modulation) Totally Lead-Free & Fully RoHS Compliant 450kHz Switching Frequency Halogen and Antimony Free. Green Device Pulse Width Modulation (PWM) Regardless of Output Load o AP63356Q Supports Pulse Frequency Modulation (PFM) o AP63357Q o Up to 80% Efficiency at 1mA Light Load o Up to 87% Efficiency at 5mA Light Load 1 of 11 August 2019 AP63356Q/AP63357Q Diodes Incorporated www.diodes.com Document number: DSxxxxRev. 1 - 1 AP63356/7/Q-EVM 3.8V TO 32V INPUT, 3.5A LOW IQ SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION APPLICATIONS 12V and 24V Distributed Power Bus Supplies Flat Screen TV Sets and Monitors Power Tools and Laser Printers White Goods and Small Home Appliances FPGA, DSP, and ASIC Supplies Home Audio Network Systems Set Top Boxes Gaming Consoles FUNCTIONAL BLOCK I1 I2 VCC VCC 1 VIN 1.5A 4A Regulator 0.4V 20k EN 2 + ON Internal 0.8V 1.18V Reference 1.1V + R = 0.2V/A T + CSA OVP 0.88V + 6 BST OCP Ref S = 0.83V/T E FB 3 + + Oscillator UVP OVP 0.72V OSC 450kHz 9 SW UVP Error Amplifier VSUM + Control 0.8V Logic + gm VCC Internal SS + PWM Comparator 5M 5 PG GND Detection OSC 18k COMP 4 7.6nF 8 GND Figure 1. Functional Block Diagram 2 of 11 August 2019 AP63356Q/AP63357Q Diodes Incorporated www.diodes.com Document number: DSxxxxRev. 1 - 1