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VIPER53E Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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VIPER53E Scheda tecnica(HTML) 1 Page - STMicroelectronics |
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1 / 1 page  www.st.com/vipower Thanks to the MDmesh MOSFET with a breakdown voltage of 620V, an RDS(on) of 1Ω at 25°C and a typical handling output power of 40W for a 85 to 265Vac voltage mains. For this level of power the device does not require a heat-sink. The total power consumption of the converter is less than 0.5W for the system when working in stand-by mode. This means power supply designers can easily meet the Blue Angel Eco or Energy Star Program. Although the main application of VIPer53E is in AC/DC converters for consumer equipment such as set-top boxes, DVDs, VCRs, it can also be used for stand-by power supplies for servers or in home appliances where a very efficient AC/DC power supply in buck topology is needed. The higher VDD voltage range brings flexibility in designing the transformer. In fact in secondary regulation VIPer53E VDD voltage extends from 9V to 18V, while in the VIPer53 it goes from 9V to 14.5V and this wide voltage range can follow fast load variations. The extended VDD is implemented by eliminating an internal error amplifier. Automatic burst mode for very low consumption in stand-by conditions (less than 500mW); Integrated high voltage start-up current source; Overload and short circuit control; Over-voltage protection at 18V; Over-temperature shutdown; Under-voltage protection; Current mode control with adjustable drain current limitation; Externally set switching frequency, up to 300kHz. VIPer53EDIP VIPer53ESP 195-265Vac 30W 40W 85-265Vac Input Mains P / N 50W 65W VIPer53E general block diagram overtemp detector oscillator R1 150/400ns blanking VIPer53E R2 R3 S FF R4 Q R5 8.4/ 11.5V 18V 0.5V 4.35V 4V 1V 8V 125k ON/OFF OSC DRAIN SOURCE COMP TOVL VDD UVLO comparator overvoltage comparator overload comparator standby comparator PWM Latch PWM comparator current amplifier HCOMP 4.5V 0.5V blanking time selection The new VIPer53E includes a PWM driver, an MDmesh MOSFET, a start-up high voltage current source and several on-chip protection circuits. The VIPer53E is an alternative choice to the VIPer53 when only the secondary regulation is required in a power supply. Like the standard VIPer53, the new version is housed in surface mounting DIP-8 and PowerSO-10 packages. |
Codice articolo simile - VIPER53E |
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Descrizione simile - VIPER53E |
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