8 Terminations 8V~38V VIPER22 AC to DC power converter VIPER™ Series 1 Outputs 60kHz
VIPER22A is a switched-mode power supply controller IC manufactured by STMicroelectronics. This article mainly introduces circuit, equivalent, datasheet and other detailed information about STMicroelectronics VIPER22A.
How to Install IC VIPER22A to SMPS Correctly
Catalog
- VIPER22A Description
- VIPER22A Pinout
- VIPER22A CAD Model
- VIPER22A Features
- Specifications
- VIPER22A Circuit
- VIPER22A Equivalent
- VIPER22A Alternatives
- VIPER22A Benefits
- VIPER22A Applications
- VIPER22A Mechanical Data
- VIPER22A Manufacturer
- Datasheet PDF
VIPER22A Description
VIPER22A is a switched-mode power supply controller IC introduced by STMicroelectronics that has been extensively used in AC to DC Converters in offline power circuit designs. This controller IC consists of an in-built PWM controller with a power MOSFET. The MOSFET is connected to the primary side of a power transformer which when switched will produce the required output voltage based on transformer design.
VIPER22A Pinout
VIPER22A Pinout
| Pin Number | Pin Name | Description |
| 1,2 | Source | Source pin of the switching MOSFET |
| 3 | Feedback | Feedback for the SMPS circuit |
| 4 | VDD | Vdd voltage 9V to 38V |
| 5,6,7,8 | Drain | Drain pin of the switching MOSFET |
VIPER22A Pin Description
VIPER22A CAD Model
Footprint
VIPER22A Features
●Operating Voltage: 9 Volts – 38 Volts
●Internal Oscillator Frequency: 60 kHz
●Drain to Source Voltage: 730 Volts
●Feedback Current: 3 mA
●Typical Peak Current Limit: 0.7 A
●Off-state Drain Current: 0.1 mA
●Fall Time: 100ns
●Rise Time: 50ns
●Input Feedback Impedance: 1.2 Kohms
●SMPS Switching Controller IC
●AC to DC converter
●Available in PDIP and SO 8-pin Package
Specifications
STMicroelectronics VIPER22AS technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics VIPER22AS.
Type
Parameter
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154, 3.90mm Width)
Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES
Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~150°C TC
Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube
Series
VIPER™
JESD-609 Code
e0
Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Obsolete
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Number of Terminations
8
ECCN Code
EAR99
Terminal Finish
Tin/Lead (Sn/Pb)
Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
7W
Terminal Position
DUAL
Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING
Peak Reflow Temperature (Cel)
NOT SPECIFIED
Number of Functions
1
Reach Compliance Code
not_compliant
Frequency
66kHz
Time@Peak Reflow Temperature-Max (s)
NOT SPECIFIED
Base Part Number
VIPER22
Pin Count
a count of all of the component leads (or pins)
8
JESD-30 Code
R-PDSO-G8
Number of Outputs
1
Qualification Status
An indicator of formal certification of qualifications.
Not Qualified
Input Voltage-Nom
18V
Analog IC - Other Type
SWITCHING REGULATOR
Voltage - Supply (Vcc/Vdd)
8V~38V
Input Voltage (Min)
9V
Topology
Flyback
Control Mode
CURRENT-MODE
Output Current-Max
0.84A
Frequency - Switching
60kHz
Input Voltage (Max)
38V
Control Technique
PULSE WIDTH MODULATION
Switcher Configuration
SINGLE
Internal Switch(s)
Yes
Fault Protection
Protection against electric shock under. single fault conditions.
Current Limiting, Over Temperature, Over Voltage
Output Isolation
Isolated
Voltage - Breakdown
730V
Voltage - Start Up
14.5V
Length
4.9mm
Width
3.9mm
RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
Lead Free
Lead Free
0 Similar Products Remaining
VIPER22A Circuit
Example Circuit
As you can see in the example circuit above, the transformer plays an important role in the overall design. It has three coils, namely primary, secondary and auxiliary (the second coil on the primary side). The primary side of the transformer is connected to the rectified power supply voltage through the MOSFET in the Viper controller IC, and the power supply DC will be switched according to the feedback to the IC. The auxiliary coil of the transformer is used to power the Viper IC, and the secondary side of the transformer provides the required output voltage.
VIPER22A Equivalent
VIPER12A, AP8012
VIPER22A Alternatives
| Part Number | Description | Manufacturer |
| KA5L0165R-TUPOWER CIRCUITS | 4 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PSFM4, TO-220F, 4 PIN | Fairchild Semiconductor Corporation |
| FSDM0365RNPOWER CIRCUITS | 12A SWITCHING REGULATOR, 73kHz SWITCHING FREQ-MAX, PDIP8, MS-001BA, DIP-8 | Rochester Electronics LLC |
| TNY256YPOWER CIRCUITS | Switching Controller, Current-mode, 140kHz Switching Freq-Max, PDSO5, TO-220, 5 PIN | Power Integrations |
| FSDM0265RNBPOWER CIRCUITS | Switching Regulator, Current-mode, 8A, 73kHz Switching Freq-Max, PDIP8, MS-001BA, DIP-8 | Fairchild Semiconductor Corporation |
| TNY256PPOWER CIRCUITS | Switching Controller, Current-mode, 140kHz Switching Freq-Max, PDSO8, 0.300 INCH, PLASTIC, MS-001AB, DIP-8 | Power Integrations |
| KA5L0380RPOWER CIRCUITS | Switching Regulator | ON Semiconductor |
| MC33369TPOWER CIRCUITS | Switching Regulator, Voltage-mode, 0.5A, 115kHz Switching Freq-Max, CMOS, PSFM5, TO-220, 5 PIN | Motorola Semiconductor Products |
| TNY268PGPOWER CIRCUITS | Switching Regulator, 0.88A, 140kHz Switching Freq-Max, PDIP7, 0.300 INCH, LEAD-FREE, PLASTIC, MS-001-AB, DIP-8 | Power Integrations |
| TEA1623P/N1,112POWER CIRCUITS | TEA1623P; TEA1623PH - STARplug switched-mode power supply controller IC DIP 8-Pin | NXP Semiconductors |
| TOP209PNPOWER CIRCUITS | Switching Regulator, Voltage-mode, 0.1A, 85kHz Switching Freq-Max, CMOS, PDIP8, PLASTIC, MS-001AB, DIP-8 | Power Integrations |
VIPER22A Benefits
– Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage. This feature is well adapted to battery charger adapter configurations.
– Automatic burst mode in low load condition.
– Overvoltage protection in hiccup mode.
VIPER22A Applications
■Used in Low Power Supply Systems
■Used inLED Drivers
■Used inRemote Microcontroller Designs
■Used inSMPS Circuits
■Used inAuxiliary Power Supply
■Used inIndustrial Applications
■Used inBattery Chargers
■Used inAutomobiles
VIPER22A Mechanical Data
VIPER22A Mechanical Data
VIPER22A Manufacturer
STMicroelectronics is a French-Italian multinational electronics and semiconductor manufacturer, headquartered in Plan-les-Oates near Geneva, Switzerland.
The company originated from the merger of two state-owned semiconductor companies in 1987: "Thomson Semiconductors" in France and "SGS Microelettronica" in Italy.
It is often referred to as "ST" and is the largest semiconductor chip manufacturer in Europe by revenue. STMicroelectronics corporate headquarters and EMEA regional headquarters are located in Geneva, while the holding company STMicroelectronics N.V. is incorporated in the Netherlands.
The company's US headquarters are located in Koper, Texas. The Asia-Pacific region is headquartered in Singapore, while the Japan and South Korea operations are headquartered in Tokyo. The headquarter of the company in China is in Shanghai.
Datasheet PDF
Download datasheets and manufacturer documentation for STMicroelectronics VIPER22AS.
- Datasheets :
VIPer22ADIP/AS
