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VIPer35 Datasheet

Quasi-resonant high performance off line high voltage converter

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VIPer35
Quasi-resonant high performance off line high voltage converter
621
6',3
Figure 1. Basic application schematic

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Features
800 V avalanche-rugged power MOSFET
allowing ultra wide range input VAC to be
achieved
Embedded HV start-up and senseFET
Built-in soft-start
Quasi-resonant current mode PWM controller
with drain current limit (IDlim)
Multifunction ZCD pin:
– Zero-current detection
– OCP threshold (IDlim) setup
– Output OVP (auto-restart)
– Feed-forward compensation
Support isolated flyback topology with opto-
coupler
Frequency limit:
– 136 kHz (L type), 225 kHz (H type)
Datasheet - production data
Less than 30 mW @ 230 VAC in no-load
condition
Brown-out set through resistor divider
Short-circuit protection (auto-restart)
Hysteretic thermal shutdown
Applications
Auxiliary power supply
Adapter/charger for PDA, camcorders,
shavers, tablet, video games, STB
Supplies for industrial systems, metering,
appliances
Description
The device is a high voltage converter, which
smartly integrates an 800 V rugged power
MOSFET with a quasi-resonant current mode
PWM control. This IC meets severe energy
saving standards as it has very low consumption
and operates in burst mode under light load
conditions.
The device features the brown-out enabling the
IC to set the switch-off and switch-on threshold
independently one of each other. The quasi-
resonant operation reduces the level of EMI and
the quantity of components in the application.
The quasi-resonant operation reduces the
switching losses and improves power conversion
efficiency. The device features high level
protections such as: output overvoltage, short-
circuit and thermal shutdown with hysteresis.
After the removal of a fault condition, the IC is
automatically restarted.
February 2016
DocID026980 Rev 4
1/44
www.st.com


STMicroelectronics Electronic Components Datasheet

VIPer35 Datasheet

Quasi-resonant high performance off line high voltage converter

No Preview Available !

Contents
Contents
VIPer35
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Typical output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Typical circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Efficiency performance for a typical flyback converter . . . . . . . . . . . . 18
8 Operation description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.1 Power section and gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.2 High voltage start-up generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.3 Power-up and soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.4 Power-down description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.5 Auto-restart description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.6 Quasi-resonant operation (QR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.7 Frequency foldback function and valley-skipping mode . . . . . . . . . . . . . . 25
8.8 Blanking time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.9 Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.10 Current limit set-point and feed-forward option . . . . . . . . . . . . . . . . . . . . 27
8.11 Overvoltage protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.12 ZCD pin summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.13 Feedback and overload protection (OLP) . . . . . . . . . . . . . . . . . . . . . . . . 32
8.14 Burst mode operation at no-load or very light load . . . . . . . . . . . . . . . . . . 35
8.15 Brown-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2/44 DocID026980 Rev 4


Part Number VIPer35
Description Quasi-resonant high performance off line high voltage converter
Maker STMicroelectronics
Total Page 30 Pages
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