VIPER35 datasheet(1/44 Pages) STMICROELECTRONICS

部件名	VIPER35

功能描述	Quasi-resonant high performance off line high voltage converter

PDF	44 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 44 page

February 2016

DocID026980 Rev 4

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VIPer35

Quasi-resonant high performance off line high voltage converter

Datasheet

- production data

Figure 1. Basic application schematic

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)

• 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.

www.st.com

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