DIODES AP3190P EVB Contents User Guide
- June 1, 2024
- DIODES
Table of Contents
DIODES AP3190P EVB Contents User Guide
Summary
General Description
The 22W Evaluation Board (EVB) is composed of the AP3190P controller.
The AP3190P is a high-performance offline PSR AC/DC power supply controller. It is specially designed for applications that require higher efficiency at light loads and is cost effective.
Using the multi-mode control scheme, the AP3190P can also achieve high conversion efficiency with full load conditions. At heavy load and low line, the AP3190P will operate in QR mode to achieve high performance. When the load is decreasing, it will enter into fixed switching frequency operating mode. To optimize product performance, the fixed frequency is different in high (60kHz) and low line (80kHz).
The AP3190P is designed to authorize a transient peak power excursion for peak load. It means the OCP reference can be increased to 1.75 times when the peak load event appears.
Key Features
System Key Features
- Primary Side Control for Eliminating Opto-Coupler
- A Transient Peak Power Excursion for Peak Load
- Low standby power (<65mW)
- Multiple QR/AM Modes to Improve Audio Noise and Efficiency
AP3190P Key Features
- Primary Side Control for Eliminating Opto-Coupler
- A Transient Peak Power Excursion for Peak Load
- 65mW No-Load Input Power
- Adjustable Overtemperature Protection
- Multiple QR/AM Mode to Improve Audio Noise and Efficiency
- QR for Higher Efficiency and Better EMI
- Totally Lead-Free & Fully RoHS Compliant
Applications
- IoT offline powers Set-Top Box Power Supply
- Smart speakers
- Set-top box power supplies
- Network Adaptors
Main Power Specifications
Evaluation Board Pictures
Power Supply Specification
Specification and Test Results
Schematics
Board Schematics
Bill of Material (BOM)
Transformer Design
Schematics Description
AC Input Circuit & Differential Filter
The Fuse F1 protects against overcurrent conditions which occur when some main components fails. The L1 is a differential mode chock for the differential mode noise suppression. The BD1 is a bridge rectifier which converts alternating current and voltage into direct current and voltage.
AP3190P PWM Controller
The AP3190P is a high performance offline PSR AC/DC power supply controller. It is specially designed for the application that require the peak load.
The Evaluation Board (EVB) Layout
EVB PCB Layout
Testing the Evaluation Board
Input & Output Characteristics
Input Standby Power
**Output Full Load Efficiency & 10% load at Different AC Line Input
Voltage**
Key Performance Waveforms
22W System Start-up Time
Q1 / D1A/D1B MOSFET Voltage Stress at Full Load @264Vac
Primary side MOSFET: Q1 and Secondary side D1A/D1B
System Output Ripple & Noise with the Cable
Connect 47μF AL Cap and 104MLCC to the cable output unit in parallel
Audible Noise
Dynamic load —-10% Load~100% Load, T=20mS, Rate=250mA/μS
Peak load test
Thermal Testing
Output Condition: 10V/2.2A 230VAC
Test Condition: Vin=90Vac @10V-2.2A
Notes:
- Component temperature can be further optimized with various system designs and thermal management approaches by manufacturers.
- The data has been revised according to the Ta=25C.
EMI (Conduction) Testing
Output Condition: 10V/2.2A
IMPORTANT NOTICE
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