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STMicroelectronics Viper35LD | Demoboard Steval-ISA183V1
Quasi-resonant high performance off line high voltage converter
Overview
| Topology | Other Topology |
| IC revision | V1 |
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
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
Typical applications
- Auxiliary power supply
- Supplies for industrial systems, metering,
- Adapter/charger for PDA, camcorders, shavers, tablet, video games, STB
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | VIN | VOut1(V) | IOut1(A) | Vaux(V) | ISAT(A) | VT(V (AC)) | fswitch(kHz) | NPRI : NSEC : NAUX | L(mm) | W(mm) | H(mm) | Mount | Size | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-TBL Series 2141 - 3.50 mm Horiz. Entry Modular, 3, Rising Cage Clamp | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 2141 - 3.50 mm Horiz. Entry Modular | Pins3 | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 24 to 16 (AWG) 0.2 to 1 (mm²) | – | Rated Current10 A | – | – | – | – | – | – | – | – | – | – | – | – | Length10.5 mm | – | – | MountTHT | – | ||
 | WE-TI Radial Leaded Wire Wound Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | Inductance470 µH | Rated Current0.35 A | Saturation Current @ 10%0.4 A | DC Resistance2.4 Ω | Self Resonant Frequency3.4 MHz | VersionHeat Shrinking Tube | – | – | – | – | Saturation Current0.4 A | – | – | – | Length6 mm | Width6 mm | Height8.5 mm | MountTHT | Size5075 | ||||
 | WE-OLSTM Offline Flyback Transformers, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLSTM Offline Flyback Transformers | – | – | – | – | – | Inductance1500 µH | – | – | – | – | – | Input Voltage 60 - 187 V (AC) | Output Voltage 112 V | Output Current 11 A | Auxiliary Voltage20 V | Saturation Current1.2 A | Insulation Test Voltage3200 V (AC) | Switching Frequency 67 - 97 | Turns Ratio5.6:1:0.52:0.8 | Length22.2 mm | Width25 mm | Height16 mm | MountTHT | SizeEE20/10/6 |