VIPER12A IC Pinout, Circuit, Datasheet and Equivalent (Pin Video Attached)
Contents
What is the VIPER12A IC
The VIPER12A stands as a comprehensive SMPS controller IC featuring an integrated PWM controller paired with a potent power MOSFET on a single silicon chip. This integration enables efficient conversion of a wide AC input voltage range spanning from 85V to 265V into lower-level output voltages, such as 5V.
It adeptly handles output currents ranging from 10mA to 200mA. The dedicated current mode PWM controller, merged with a high-voltage power MOSFET within a single chip, ensures optimal performance in power supply applications, allowing for compact designs and efficient power conversion.
VIPER12A IC Pinout
Pinout Configuration
Pin Number |
Pin Name |
Description |
1, 2 |
Source |
Source pin for the switching MOSFET |
3 |
Feedback |
Feedback input for the SMPS circuit |
4 |
VDD |
Input voltage ranging from 9V to 38V |
5, 6, 7, 8 |
Drain |
Drain pins for the switching MOSFET |
Pin details of IC VIPer 12A -- Video
Here is a video about viper12a ic chip pin explained,
VIPER12A IC Specifications
- Fixed 60 kHz switching frequency
- 9 V to 38 V wide range VDD voltage
- Current mode control
- Auxiliary undervoltage lockout with hysteresis
- High voltage start-up current source
- Overtemperature, overcurrent and overvoltage protection with auto-restart
- Typical power capability
- – European (195 - 265 Vac) 8 W for SO-8, 13 W for DIP-8
- – European (85 - 265 Vac) 5 W for SO-8, 8 W for DIP-8
IC VIPER12A Circuit Diagram
Block Diagram
Current and voltage conventions
Rectangular U-I output characteristics for battery charger
It demonstrates a regulation setup employing a TSM101-driven optocoupler with dual operational amplifiers and a voltage reference. This configuration enables precise control of both output voltage and current. By combining the error signals using an integrated OR function, it creates a rectangular output characteristic, beneficial for applications like battery chargers. This setup excels in delivering a defined charging rate in current mode, crucial for various battery types, especially for Li-ion batteries that demand accurate voltage regulation along with current control.
ViperA controller IC
The output voltage and current of this circuit are determined by the specific values chosen for the capacitor and inductor. In this setup, the circuit is configured for a 5V output. For detailed guidance on utilizing this IC effectively, comprehensive instructions are available in the VIPER12A Application Notes.
Primarily designed as a buck regulator, this IC is optimized for 5V or 12V output voltages, catering to a maximum output current of 200mA. Notably, a crucial aspect of this IC is its operating voltage, Vdd, derived from the regulated voltage side. To initiate regulation, an initial voltage is necessary, typically supplied by a capacitor.
Application of VIPER12A
The VIPER12A is a versatile offline converter IC used in various low-power applications that require high efficiency and a compact design. Some of its common applications include:
- SMPS (Switched-Mode Power Supplies): It's often used in flyback or buck-boost converter topologies for AC/DC power conversion in applications such as adapters, chargers, and small power supplies.
- LED Lighting: Due to its high efficiency and ability to handle various input voltage ranges, the VIPER12A can be utilized in LED drivers for lighting applications, providing stable and efficient power.
- Home Appliances: It's employed in low-power appliances like standby power supplies, auxiliary power supplies in TVs, set-top boxes, and other household electronics.
- Industrial Power Supplies: In industrial settings, the VIPER12A finds use in various control circuits, auxiliary power supplies, and low-power converters for sensors and controls.
- Consumer Electronics: It's suitable for low-power electronics such as IoT devices, smart home applications, and portable devices where compact size and energy efficiency are crucial.
- Battery Chargers: In low-power charging applications, particularly for small batteries like those found in IoT devices, the VIPER12A can regulate the charging current and voltage efficiently.
VIPER12A Equivalent IC
Parameters |
VIPER12A |
AP8012 |
|
Manufacturer |
STMicroelectronics |
STMicroelectronics |
Diodes Incorporated |
Package Type |
Various (e.g., DIP-8, SO-8) |
Various (e.g., DIP-8, SO-8) |
Various (e.g., SOP-8, DIP-8) |
Topology |
Flyback and Buck-Boost |
Flyback and Buck-Boost |
Flyback and Buck |
Input Voltage |
Wide input voltage range (e.g., 9V to 38V) |
Wide input voltage range (e.g., 8V to 38V) |
Wide input voltage range |
Output Power |
Varies based on application |
Varies based on application |
Varies based on application |
Switching Frequency |
Typically adjustable, e.g., up to 150 kHz |
Typically adjustable, e.g., up to 150 kHz |
Typically adjustable, e.g., up to 100 kHz |
Features |
Integrated high-voltage MOSFET, protection |
Integrated high-voltage MOSFET, protection |
Integrated MOSFET, protection |
Characteristics |
High efficiency, low standby power consumption |
High efficiency, low standby power consumption |
Cost-effective, good performance |
Advantages |
Integrated features, wide application range |
Integrated features, wide application range |
Cost-effective, good performance |
Disadvantages |
Limited current handling capability |
Limited current handling capability |
May require additional external components |
Differences |
Size, current handling, additional features |
Size, current handling, additional features |
Manufacturer, application focus |
VIPER22A vs VIPER12A: What are Differences
The VIPER12A and VIPER22A are both SMPS (Switched-Mode Power Supply) controller ICs designed by STMicroelectronics, but they have some differences in their specifications and intended applications:
Aspects |
VIPER12A |
|
Output Current Handling |
Up to 200mA |
Up to 250mA |
Package Options |
Various (e.g., DIP-8, SO-8) |
Various (e.g., DIP-8, SO-8) |
Output Voltage Range |
Typically 5V or 12V |
Typically 5V or 12V |
Input Voltage Range |
Wide range suitable for AC mains operation |
Wide range suitable for AC mains operation |
Integrated Features |
PWM controller and high-voltage MOSFET |
PWM controller and high-voltage MOSFET |
Application Focus |
Primarily low-power applications |
Handles slightly higher power requirements |
Efficiency |
High efficiency and low standby power |
High efficiency and low standby power |
Pin Configuration |
Various pin configurations available |
Various pin configurations available |
Primary Function |
SMPS controller for low-power applications |
SMPS controller for moderate-power applications |
VIPER12A Datasheet PDF
Check and Download VIPER12A datasheet pdf here>>
Manufacturer
The VIPER12A IC is manufactured by STMicroelectronics, a multinational semiconductor company headquartered in Geneva, Switzerland. STMicroelectronics is well-known for producing a wide range of semiconductor products including microcontrollers, power management ICs, sensors, and other integrated circuits used across various industries like automotive, industrial, consumer electronics, and more.
FAQ
- What protections does the VIPER12A offer?
- It includes various protection features such as overvoltage protection (OVP), overload protection (OLP), and overtemperature protection (OTP), enhancing the reliability and safety of the power supply.
- What are the typical control modes of operation for the VIPER12A?
- It employs a current mode control technique for regulating the output voltage, providing better stability and response to load variations.
- Does the VIPER12A require an external MOSFET for operation?
- No, it includes an internal high-voltage MOSFET rated for 730V.
- What are the advantages of using the VIPER12A in power supply designs?
- It offers high integration, compact size, efficiency, and comprehensive protection features, making it suitable for compact and efficient power supply designs.
- What voltage levels can the VIPER12A handle?
- It can handle input voltages up to 30V and can regulate output voltages suitable for low-power applications.
VIPer12ADIP - E In Stock: 4478
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