AN2753 Datasheet, PDF (1/31 Pages) STMicroelectronics – 6 W single-output VIPer17 demonstration board

AN2753
Application note
6 W single-output VIPer17 demonstration board
Introduction
The new VIPer17 device integrates in the same package two components: an advanced
PWM controller with built-in BCD6 technology and an 800 V avalanche rugged vertical
power MOSFET. The device is suitable for offline power conversion operating either with
wide range input voltage (85 V_AC - 270 V_AC) up to 6 W or with single range input voltage
(85 V_AC - 132 V_AC or 175 V_AC - 265 V_AC). With European range input voltage (175 V_AC -
265 V_AC) the device can handle up to 10 W of output power. The proposed solution has the
advantage of using few external components compared to a discrete solution, providing
several switch mode power supply protections and very low standby consumption in no-load
condition. The device operates at fixed frequency that can be 115 kHz or 60 kHz.
Frequency jittering is implemented which helps to meet the standards regarding
electromagnetic disturbance. The protections present on the device such as overload and
output overvoltage protections, secondary winding short-circuit protection, hard transformer
saturation and brownout protections improve the reliability and safety of the design.
Moreover internal thermal shutdown and an 800 V avalanche rugged power MOSFET
improve the robustness of the system.
The VIPer17 demonstration board is a standard single-output isolated flyback converter that
uses all the protections mentioned above. If brownout and overvoltage protection are not
necessary, the number of external components is further reduced.
Figure 1. VIPer17HN demonstration board
Note:
VIPer17HN is the full order code.
October 2009
Doc ID 14654 Rev 2
1/31
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