Serma EVA4201, Руководство пользователя

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ISO 9001 / ISO 14001 01/06/2016 © Productivity Engineering GmbH
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EVA4204/4301
User Guide
Evaluation Board for 80W PFC Supply
2. Safety Instructions
Please take caution - the board operates at 405V DC and is directly plugged into the power
network. Operating this Board requires an isolated transformer!
The EVA4201/4301 was designed to help understand and evaluate the features of two Power Factor
Correction IC`s. Used external devices are standard components chosen for safe operation and do not
represent a completely fine-tuned OEM application. The BOM (bill of material) for a final application may
look slightly different.
The board can also be used with PEs high precision PFC ICs, the PE4202 and the PE4302.
3. Introduction
3.1 Features
The board is designed to support applications of our two PFC-IC’s PE4201 and PE4301
PE4201 PE4301
- Low Total Harmonic Distortion (THD) - Wide Range Input
- Low StartUp Current (<5 µ A) - Low Total Harmonic Distortion (THD)
- Low Operating Current (<450 µ A) - Low Operating Current (<550 µ A)
- Disable Function (<170 µ A) - Disable Function (<100 µ A)
- Under-Voltage Lockout with >8V Hysteresis - Under-Voltage Lockout with >8V Hysteresis
- Over voltage and Over current protection with - Over voltage protection, Peak current
separate Reference protection and Open loop protection with
- Reduced operating Frequency at low Output separate Reference
Power - low Peak current protection threshold
- High Efficiency at high and low Output Power - Operating Frequency between 40 kHz and
- Internal Clamping Resistor at G 250 kHz dependent upon load
- fast Driver turn ‘off’ - High Efficiency at high and low Output Power
- very fast Driver ‘off’ at over current sense - Internal Clamping Resistor at Driver
- Driver load up to 5nF - Soft start
- fast Driver Switch ‘off’
Application with PE4201/PE4301
•
Active power factor correction
•
Switch mode power supplies
3.2 IC`s General Description
The
PE4201 and PE4301 are wide input range controller ICs for active power factor correction
converters. Both ICs provide many protection functions, such over voltage protection, open loop
protection, supply under voltage lockout, output under voltage protection and peak current limit
protection. These protection functions are working with separate reference.
The
PE4201 operates in the CRM with voltage mode PWM control and in DCM under light load
condition. The maximum switching frequency is clamped with an internal delay circuit. Compensations
for voltage loop are external.
The
PE4301
IC operates in the CCM with average current control. The switching frequency depends upon
load. At high output load the frequency is low and with low load the frequency is high. The Compensation
for voltage loop and soft start is external.
For more information refer to the datasheets.