What is the VIPER12ADIP-E and Its Key Features

VIPER12ADIP-E is an integrated circuit that helps in offline power supply applications. It acts as the primary switcher in switched-mode power supplies. The device combines a PWM controller and a high-voltage MOSFET in one package. Designers and engineers benefit from knowing its features because they help in choosing the right power supply solution.

Key Takeaways

• The VIPER12ADIP-E combines a PWM controller and a high-voltage MOSFET in one chip, simplifying power supply designs and reducing parts.

• It supports a wide input voltage range and fixed 60 kHz switching frequency, ensuring stable and efficient power conversion.

• Built-in protection features like overtemperature, overcurrent, and overvoltage keep devices safe and improve reliability.

• Low standby power and burst mode operation help save energy, making it ideal for energy-efficient applications.

• The device fits many uses such as battery chargers, standby power supplies, and industrial electronics, offering design flexibility and compact size.

Overview

Purpose

The VIPER12ADIP-E serves as a key component in offline power supply circuits. Engineers use it to create switched-mode power supplies (SMPS) that convert AC power from the wall into stable DC power for electronic devices. This integrated circuit helps designers build reliable and efficient power supplies for many applications. Its compact design and built-in features make it suitable for both consumer and industrial products.

The VIPER12ADIP-E addresses the needs of modern SMPS circuits by combining a power MOSFET and a PWM controller in one package. It supports a wide input voltage range from 85V to 265V AC, which allows it to work in different regions around the world. The device operates at a fixed switching frequency of 60 kHz, balancing efficiency and electromagnetic interference (EMI). Multiple protection features, such as current limiting and over-temperature shutdown, ensure safe operation. Its low standby power consumption and low start-up current help save energy and reduce stress on the circuit. The DIP-8 package saves space on the circuit board, making it easy to use in compact designs.

Common use cases for the VIPER12ADIP-E include:

• Offline power supplies for battery charger adapters

• Standby power supplies for TVs or monitors

• Auxiliary supplies for motor control

Main Functions

The VIPER12ADIP-E performs several important functions in switched-mode power supply designs. It combines a current mode PWM controller with a high-voltage power MOSFET on the same chip. This integration reduces the number of parts needed and simplifies the design process. The device operates at a fixed switching frequency of 60 kHz, which helps maintain stable performance.

Key functions include:

• Wide VDD voltage range (9 V to 38 V) for flexible power supply design

• Current mode control for precise power management

• Auxiliary undervoltage lockout with hysteresis to prevent malfunction

• High voltage start-up current source for reliable operation

• Multiple protections, including overtemperature, overcurrent, and overvoltage with auto-restart

The following table shows how the VIPER12ADIP-E solves common design challenges in offline power supply circuits:

The VIPER12ADIP-E acts as a primary switcher IC in low power offline SMPS designs. It provides the essential functions needed for safe, efficient, and reliable power conversion.

VIPER12ADIP-E Features

Integrated PWM Controller

The VIPER12ADIP-E includes a current mode PWM controller built into the chip. This controller helps manage how much power flows through the circuit. It improves efficiency by making sure the device only uses the energy it needs. The controller also responds quickly to changes in load, keeping the output stable. Designers find this integration useful because it reduces the number of parts needed for a power supply.

1. The PWM controller works with a high-voltage MOSFET to convert power efficiently.

2. Current mode control allows for fast response and good regulation.

3. Pulse-by-pulse current limiting protects the device from overloads.

4. Fewer components mean smaller, less expensive power supplies.

5. The fixed switching frequency and wide input voltage range help keep power management stable.

6. The device works well in flyback circuits and other low to medium power designs.

The VIPER12ADIP-E stands out for its ability to combine control and switching in one package, making it easier for engineers to build reliable power supplies.

High Voltage MOSFET

The high-voltage MOSFET inside the VIPER12ADIP-E handles switching tasks in the power supply. This part can manage high voltages and helps the device work safely in many applications. The table below shows important specifications:

The MOSFET can handle up to 730 V and about 0.36 A, making it suitable for low to moderate power applications.

Fixed Frequency

The VIPER12ADIP-E operates at a fixed switching frequency of 60 kHz. This steady frequency helps the device work predictably and efficiently. Stable switching makes it easier to design circuits that control electromagnetic interference (EMI). Engineers can choose components that match the frequency, which helps keep the power supply reliable. The fixed frequency also supports consistent performance in battery chargers and standby power supplies.

Wide VDD Range

The device supports a wide VDD voltage range from 9 V to 38 V. This flexibility lets the VIPER12ADIP-E work with different auxiliary supply voltages. Designers can use it in many types of power supplies, including battery chargers and motor controls. The wide range helps the device stay reliable even when the input voltage changes. Automatic burst mode and overvoltage protection add to its efficiency and safety.

Protection Features

The VIPER12ADIP-E includes several protection features that keep the device and connected circuits safe. These features help prevent damage from overheating, too much current, or high voltage spikes.

• Overtemperature, overcurrent, and overvoltage protection with auto-restart.

• Auxiliary undervoltage lockout with hysteresis.

• Overvoltage protection in HICCUP mode.

• Large input voltage range on the VDD pin.

• Automatic burst mode for low load conditions.

• Current limiting, thermal shutdown, and soft-start mechanisms.

• Compliance with international safety standards.

These protections help the device recover from faults and keep the power supply running smoothly. Auto-restart lets the device start working again after a problem, which improves reliability.

The DIP-8 package gives the VIPER12ADIP-E strong mechanical stability and makes it easy to mount on standard circuit boards. RoHS compliance means the device meets safety and environmental rules, making it a good choice for both industrial and consumer electronics.

Details

Efficiency

The VIPER12ADIP-E delivers strong efficiency in power supply designs. Its integrated PWM controller and high-voltage MOSFET work together to reduce energy loss. The fixed 60 kHz switching frequency helps the device operate with minimal heat generation. Low standby power consumption means the device uses less energy when the load is light or idle. This feature supports energy-saving goals in modern electronics.

Designers often choose the VIPER12ADIP-E for applications that require low power loss. The device’s burst mode operation further improves efficiency during periods of low demand. By using fewer external components, the circuit stays compact and reduces unnecessary power drain. Efficient operation also helps extend the lifespan of connected devices by keeping temperatures lower.

Reliability

The VIPER12ADIP-E stands out for its dependable performance. As part of the VIPER™ series, it has a reputation for reliability in many power supply applications. The device includes several protection features that guard against faults and damage. These features include overvoltage protection (OVP), overload protection (OLP), and overtemperature protection (OTP). The device also offers thermal shutdown and soft-start functions.

• Protection features help prevent damage from electrical faults.

• High integration and compact size support reliable operation.

• Comprehensive safety features make the device suitable for demanding environments.

Design Flexibility

Engineers value the VIPER12ADIP-E for its design flexibility. The wide VDD range from 9 V to 38 V allows the device to fit many different power supply designs. Its DIP-8 package makes it easy to mount on standard circuit boards. The device’s high integration reduces the need for extra parts, which saves space and simplifies the layout.

Designers can use the VIPER12ADIP-E in both industrial and consumer products. The device meets RoHS standards, making it suitable for environmentally friendly designs. Its ability to handle various input voltages and provide multiple protection features gives engineers more options when creating safe and efficient power supplies.

VIPER12ADIP-E Applications

Battery Chargers

Battery charger adapters often use the VIPER12ADIP-E in flyback converter designs. These circuits use a secondary feedback loop with an optocoupler and a TSM101 device. The TSM101 combines two operational amplifiers and a voltage reference. This setup helps regulate both the output voltage and current. The charger can deliver a precise charging rate and accurate voltage control, which is important for lithium-ion batteries. The VIPER12ADIP-E supports a wide input voltage range and uses current mode control. The feedback pin manages the peak current in the MOSFET, which keeps the charging process safe and reliable. Many battery chargers for small devices and IoT products use this IC because it offers compact size, energy efficiency, and strong protection features.

Low Power SMPS

Low power switched-mode power supplies (SMPS) benefit from the integration and efficiency of this device. The VIPER12ADIP-E combines a current mode PWM controller and a high-voltage MOSFET on one chip. This reduces the number of parts and makes the design smaller and less expensive. Automatic burst mode operation helps save energy when the load is light. The fixed 60 kHz switching frequency keeps the output stable and reduces electromagnetic interference. Designers use this IC in standby power supplies for TVs, monitors, and other electronics that need reliable low-power operation.

The VIPER12ADIP-E supports power outputs suitable for small to medium power supplies, making it a practical choice for many consumer and industrial products.

Offline Power Supplies

Offline power supply circuits often require high reliability and safety. The VIPER12ADIP-E provides several advantages over alternative solutions:

Designers choose this IC for offline power supplies in motor control, LED lighting, and home appliances. Its built-in protections and efficient operation help keep devices safe and energy use low.

The VIPER12ADIP-E gives designers a reliable and efficient way to build offline power supplies. This device stands out for its integrated PWM controller, high-voltage MOSFET, and strong protection features. Engineers choose it for these reasons:

• Simple design with fewer parts

• High safety and energy efficiency

• Flexible use in many applications

Many modern SMPS designs use the VIPER12ADIP-E because it helps create safe and compact power solutions.

FAQ

What type of package does the VIPER12ADIP-E use?

The VIPER12ADIP-E comes in a DIP-8 package. This package makes it easy to mount on standard circuit boards. Many engineers choose this type for its reliability and simple installation.

Can the VIPER12ADIP-E handle high input voltages?

Yes, the VIPER12ADIP-E can handle input voltages up to 730V. This feature allows the device to work in many regions and supports a wide range of power supply designs.

What protection features does the VIPER12ADIP-E offer?

The device includes overvoltage, overcurrent, and overtemperature protection. It also has undervoltage lockout and automatic restart. These features help keep circuits safe and prevent damage.

Is the VIPER12ADIP-E suitable for energy-saving designs?

The VIPER12ADIP-E supports low standby power and burst mode operation. These features help reduce energy use. Many designers use this device in products that need to meet strict energy standards.

Where do engineers use the VIPER12ADIP-E most often?

Engineers use the VIPER12ADIP-E in battery chargers, low power SMPS, and offline power supplies. The device fits both consumer and industrial products. Its compact size and strong protection make it a popular choice.

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