Ic offline swit pwm smps 8soic online from elcodis, view and download viper22ase pdf datasheet, pmic ac dc converters, offline switchers specifications. Stmicroelectronics low power off line smps primary switcher,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits. Also provides a charging current during start up thanks to a highvoltage current source connected to the drain. The voltage across r2 is then compared to a fixed reference voltage of. Thisthese diagrams show electrical connections only. Figure 11 shows a block diagram of the pic16f630676 devices. R2 receives this current and the current coming from the fb pin. Electronic circuit is a good site for hobbyist also who would like to try diy because it shared good circuits.
Unlike conventional pwm control circuits which use a voltage input the inverted input of an operational amplifier, the fb pin is sensitive to current. Viper22a datasheet, viper22a datasheets, viper22a pdf, viper22a circuit. Input pin for selecting switching frequency 2 khz if connected to source pin and 66 khz if connected to control pin. Enhanced, energy efficient, low power offline switcher, tny267pntl pdf download power integrations, inc, tny267pntl datasheet pdf, pinouts. Refer to lead assignments for correct pin configuration. This controller ic consists of an inbuilt pwm controller with a power mosfet.
The power mosfet delivers a sense current is which is proportional to the main current id. Viper22a datasheet off line smps primary switcher st. Viper22adip viper22as 915 feedback pin principle of operation a feedback pin controls the operation of the device. Viper22a e, viper22adipe, viper22ase operations doc id 12050 rev 2 921 the power mosfet delivers a sense current i s which is proportional to the main current id. Viper22ase stmicroelectronics, viper22ase datasheet. The viper22ae combines a dedicated current mode pwm controller. Large input voltage range on the vdd pin accommodates.
For this purpose, an hysteresis comparator monitors the datasheet search, datasheets, datasheet search site for electronic components and. Pin connections and function viper22adip viper22as e 620 rev1 3 pin connections and function figure 1. Pricing and availability on millions of electronic components from digikey. Pic16f630676 block diagram flash program memory data bus 8 program 14 bus instruction.
Ordering information see general marking information in the device marking section on page 19 of this data sheet. Fa531x series bipolar ic for switching power supply control. Am22a chip is a dedicated lowpower switching power supply control chip, widely used in power adapter, led power supply, induction cooker, empty tune, dvd and other small household electrical appliances. Large input voltage range on the vdd pin accommodates changes in auxiliary. Vorflyback voltage80v, set it lower then 150v for the safety of ic. Figure 9 presents the internal current mode structure. Fb pin, and when the optocoupler is off start up or short circuit, it can be assumed that the corresponding voltage is very close to 0v. The auxiliary winding provi des the bias voltage for the viper22a at pin 4 vdd. During this phase, the internal current consumption is reduced, the vdd pin is sourcing a.
Tp4056 1a standalone linear lilon battery charger with. Viper22a datasheet, viper22a pdf, viper22a data sheet, datasheet, data sheet, pdf. Logic diagram one gate 001aag104 1 1a 2 1b 5 2a 6 2b 8 3a 9 3b 12 4a 4b 3 4 10 11 1y 2y 3y 4y 001aag105 na nb ny fig. Mains type european 265 vac us wide range 265 vac so8 dip8. C is the viper supply capacitor connected on vdd pin. Unit cs terminal sink current isink cs pin 86v, pin 21v. Viper12a datasheet, viper12a pdf, viper12a data sheet, viper12a manual, viper12a pdf, viper12a, datenblatt, electronics viper12a, alldatasheet, free, datasheet. This energy is transferred to the auxiliary winding 34, and to the output 56 when the viper22a is off.
Lm339, lm239, lm9, lm2901 quad differential comparators. Low power off line smps primary switcher, viper22a datasheet, viper22a circuit, viper22a data sheet. Stmicroelectronics low power off line smps primary switcher,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Pin connections and function viper12ae 621 doc id 11977 rev 2 3 pin connections and function figure 2. Digikey s tools are uniquely paired with access to the worlds largest selection of electronic components to help you meet your design challenges headon. A good estimate is that the controller will dissipate the output power. Viper22aas,dipe datasheet stmicroelectronics digikey. Also provides a charging current during start up thanks to a high voltage current source connected.
Saa7146a multimedia bridge, high performance scaler and pci. Viper22a smps controller ic pinout, datasheet, equivalents. Please be aware that all data in the graph are just for reference and not for guarantee. Viper22astre stmicroelectronics integrated circuits ics. Typical connection packages 14lead pdip ir2110ir21 16lead soic ir2110sir21s. Am22a datasheet switching power supply control chip. Stmicroelectronics, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
Pwm ic for smps introduction signal elektronik ltd. Name 1 sig a inout io inputoutput for switch a 2 sig a outin io outputinput for switch a 3 sig b outin io outputinput for switch b 4 sig b inout io inputoutput for switch b 5 control b i control pin for switch b 6 control c i control pin for switch c. For this purpose, an hysteresis comparator monitors the datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Viper22ae viper22adipe, viper22ase stmicroelectronics. Viper22astre converter offline flyback topology 60khz 8soic from stmicroelectronics. Viper22adip viper22as215pin functioncurrent and voltage conventionsconnection diagramnamefunctionvddpower supply of the control circuits. Download ic database equivalent guide 100 thousand. Viper22ae, viper22adipe, viper22ase operations doc id 12050 rev 2 921 the power mosfet delivers a sense current i s which is proportional to the main current id. The viper22a is a popular smps controller ic form stmicroelectronics that has been extensively used in ac to dc converters in offline power circuit designs. Viper22a equivalent eel22 pc817 equivalent optocoupler ic pc817 pin details viper22a 5v 3a power supply design viper22a circuit diagram viper22a not isolated viper22a transformer design viper22a application note text.
Off time versus oscillator timing capacitor figure 3. For low drain currents, the formula 1 is valid as long as ifb satisfies internal threshold of the viper22a fbsd stop switching. Pc817x series dip 4pin general purpose photocoupler. Saa7146a multimedia bridge, high performance scaler and. September 2002115viper22adipviper22aslow power off line smps primary switchertypical power capabilityn fixed 60 khz switching frequencyn 9v to 38v wide range vdd voltagen current mode control datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. For this purpose, an hysteresis comparator monitors the datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. Aug 25, 2016 viper22a datasheet off line smps primary switcher, viper22a datasheet, viper22a pdf, viper22a pinout, viper22a equivalent, data, viper22a circuit, output. Nov 11, 2016 am22a chip is a dedicated lowpower switching power supply control chip, widely used in power adapter, led power supply, induction cooker, empty tune, dvd and other small household electrical appliances.
Sg3525a pulse width modulator control circuit the sg3525a pulse width modulator control circuit offers improved performance and lower external parts count when implemented for controlling all types of switching power supplies. Viper22a low power offline smps primary switcher dalincom. Utc semiconductor can support design circuit, pcb artwork, bom, test data, and emi report, even our smps design group codesign with manufacturers and design experience. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me. If vdd goes below 8v, the startup current source is activated and the output power mosfet is switched off until the vdd voltage reaches 11v. Viper22a datasheet low power off line smps primary switcher.
Please refer to our application notes and designtips for proper circuit board layout. The voltage across r2 is then compared to a fixed reference voltage of about 0. Low power offline switchedmode power supply primary switcher. View viper22aas,dip e datasheet from stmicroelectronics at digikey. It corresponds to the low voltage supply of the controlpart of the circuit. Linkswitchxt family energy efficient, low power offline switcher ic, lnk364pn pdf download power integrations, inc, lnk364pn datasheet pdf, pinouts, data sheet, equivalent, schematic, cross reference, obsolete, circuits.
Pin function pin name pin function vdd power supply of the control circuits. Viper22a datasheet, viper22a pdf, viper22a data sheet, viper22a manual, viper22a pdf, viper22a, datenblatt, electronics viper22a, alldatasheet, free, datasheet. Viper22a pdf, viper22a description, viper22a datasheets. Data is loaded into the internal 16bit shift register on clks rising edge. When the viper22a u1 is on, energy is stored in the primary winding of transformer 12, tx1. They are identical, except the pic16f676 has a 10bit ad converter. Ic design centers utc semiconductor can support and develop advanced power management integrated circuits, to lower design, approved. Pin numbers in parenthesis are for the d suffix soic. Preliminary supersedes data of 2000 mar 09 file under integrated circuits. Low power offline switchedmode power supply primary. Open drain charge status output when the battery is being charged, the pin is pulled low by an internal switch, otherwise pin is in high impedance state. Viper22a datasheet off line smps primary switcher, viper22a datasheet, viper22a pdf, viper22a pinout, viper22a equivalent, data, viper22a circuit, output.