VIPER22ADIP - 12W Offline Switching Regulator | STMicroelectronics
MPN: VIPER22ADIP ✓ NakahandaVIPER22ADIP Ulas
An offline switching regulator, also known as a switched-mode power supply (SMPS) controller, is a device that converts AC mains voltage directly to a regulated DC output without the need for a bulky line-frequency transformer. The VIPER22ADIP belongs to the family of integrated power switches, which combine the power transistor and control circuitry on a single die, reducing component count and simplifying PCB layout. This integration is part of the broader category of power management ICs, which are essential for efficient energy conversion in modern electronic systems.
Key features of the VIPER22ADIP include a 730V avalanche-rugged Power MOSFET, a 60kHz fixed switching frequency, and a standby power consumption of less than 0.5W at no load. The device also offers overcurrent, overvoltage, and thermal shutdown protection, ensuring reliable operation in harsh environments. The 8-pin DIP package provides excellent thermal performance, with a junction-to-ambient thermal resistance of 80°C/W, allowing for compact designs without external heatsinks at moderate power levels.
The VIPER22ADIP uses a current-mode PWM control architecture with a built-in high-voltage startup circuit, which eliminates the need for an external startup resistor and reduces power loss. The device also features a frequency jittering function that spreads the EMI spectrum, simplifying filter design and helping to meet EMC standards. The integrated Power MOSFET has a low on-resistance of 13Ω, minimizing conduction losses and improving overall efficiency.
Typical applications include AC/DC adapters for consumer electronics, standby power supplies for TVs and monitors, auxiliary power supplies for industrial equipment, and battery chargers. The wide input voltage range and robust protection features make it suitable for global markets with varying mains voltages.
When designing with the VIPER22ADIP, ensure proper transformer design and snubber circuitry to minimize voltage spikes and EMI. The feedback loop should be carefully compensated to maintain stability across the full load range. The device's thermal shutdown protection requires adequate PCB copper area for heat dissipation, especially at higher output power levels.
Mga alternatibo na pwedeng ilagay na VIPER22ADIP — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
LNK304PN
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
NCP1014AP100
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
VIPER22ADIP Mga Pinakamataas na Rating at Electrical Characteristics
| Output Power | 12 W (230VAC), 7 W (85-265VAC) |
| Hanay ng Voltage ng Input | 85 VAC to 265 VAC |
| Takbo ng Pagpipili | 60 kHz |
| Power MOSFET Breakdown Voltage | 730 V |
| Power MOSFET On-Resistance | 13 Ω |
| Control Mode | Current-mode PWM |
| Standby Power Consumption | < 0.5 W at no load |
| Hanay ng Temperature na Operasyon | -40°C to +150°C (junction) |
| Packhaging | 8-pin DIP (DIP-8) |
| Uri ng Pagpapasok | Through Hole |
| Thermal Resistance, Junction-to-Ambient | 80 °C/W |
| Protection Features | Overcurrent, Overvoltage, Thermal Shutdown |
| Frequency Jittering | Yes (for EMI reduction) |
| Tindminan RoHS | Compliant |
| Level ng MSL | 1 (unlimited) |
Pin Configuration ng VIPER22ADIP
| Pin 1 | VDD — Supply voltage for the control circuit |
| Pin 2 | GND — Ground |
| Pin 3 | FB — Feedback input for voltage regulation |
| Pin 4 | DRAIN — Drain of the internal Power MOSFET |
| Pin 5 | DRAIN — Drain of the internal Power MOSFET |
| Pin 6 | DRAIN — Drain of the internal Power MOSFET |
| Pin 7 | DRAIN — Drain of the internal Power MOSFET |
| Pin 8 | SOURCE — Source of the internal Power MOSFET |
Tipikal na mga Gamit
VIPER22ADIP ay nararapat para sa 6 aplikasyons: AC/DC Adapters, Standby Power Supplies, Battery Chargers, Auxiliary Power Supplies, Home Appliances, LED Lighting.
AC/DC Adapters
The VIPER22ADIP is widely used in AC/DC adapters for consumer electronics such as routers, modems, and small appliances. Its integrated Power MOSFET and PWM controller reduce component count, enabling compact and cost-effective adapter designs. The wide input voltage range (85-265VAC) ensures compatibility with global mains standards, while the low standby power (<0.5W) helps meet energy efficiency regulations. The 60kHz switching frequency allows for a small transformer, reducing size and weight. Built-in protection features (overcurrent, overvoltage, thermal shutdown) enhance reliability in demanding environments. For a 5V/1A adapter, the VIPER22ADIP operates efficiently with minimal external components, making it a popular choice for low-power applications.
Inirekomenda
Standby Power Supplies
In standby power supplies for TVs, monitors, and set-top boxes, the VIPER22ADIP provides a low-cost solution for generating auxiliary voltages. Its standby power consumption of less than 0.5W at no load is critical for meeting Energy Star and ErP directives. The device's frequency jittering feature reduces EMI, simplifying filter design and helping to pass EMC tests. The integrated high-voltage startup circuit eliminates the need for an external startup resistor, reducing component count and improving efficiency. The VIPER22ADIP can deliver up to 7W in universal input applications, which is sufficient for powering microcontrollers, sensors, and display drivers in standby mode. Its robust protection features ensure reliable operation over the product's lifetime.
Inirekomenda
Battery Chargers
The VIPER22ADIP is commonly used in battery chargers for mobile phones, power tools, and electric toothbrushes. Its constant-current/constant-voltage control capability, achieved with external feedback components, allows for precise charging profiles. The wide input voltage range ensures operation from any wall outlet worldwide. The device's low standby power is beneficial for chargers that remain plugged in when not in use. The integrated Power MOSFET with 730V breakdown voltage provides ample margin for line transients and surge events. For a typical 5V/1A charger, the VIPER22ADIP can achieve efficiencies above 70%, reducing heat generation and enabling compact designs. Protection features such as overcurrent and thermal shutdown safeguard the charger and the battery during fault conditions.
Inirekomenda
Auxiliary Power Supplies
In industrial equipment, the VIPER22ADIP is used to generate auxiliary power rails for control circuits, sensors, and communication interfaces. Its wide input voltage range and robust protection features make it suitable for harsh industrial environments. The device's current-mode control provides excellent line and load regulation, ensuring stable output voltages for sensitive electronics. The 60kHz switching frequency allows for a compact transformer, saving PCB space. The built-in thermal shutdown protects the device in high-temperature environments, while the overvoltage protection prevents damage from feedback loop failures. The VIPER22ADIP can be used in flyback or buck topologies, providing design flexibility. Its low standby power is beneficial for equipment that operates in standby mode for extended periods.
Inirekomenda
Home Appliances
The VIPER22ADIP is used in home appliances such as washing machines, refrigerators, and air conditioners for control board power supplies. These applications require reliable operation over a wide input voltage range and protection against power surges. The device's integrated Power MOSFET and controller simplify the power supply design, reducing time-to-market. The low standby power helps appliances meet energy efficiency standards. The frequency jittering feature reduces EMI, which is important for appliances that must comply with EMC regulations. The VIPER22ADIP can deliver up to 12W, which is sufficient for powering microcontrollers, relays, and display drivers. Its robust protection features ensure long-term reliability in appliances that operate continuously.
Inirekomenda
LED Lighting
In LED lighting applications, the VIPER22ADIP can be used in offline LED drivers for low-power bulbs and fixtures. Its constant-current control capability, achieved with external sensing resistors, allows for precise LED current regulation. The wide input voltage range supports global mains voltages, and the high breakdown voltage (730V) provides margin for line transients. The device's low standby power is beneficial for lighting that remains connected to the mains. The 60kHz switching frequency enables a compact transformer, reducing the size of the LED driver. The frequency jittering feature helps meet EMI standards for lighting products. The VIPER22ADIP can drive up to 12W of LED load, making it suitable for retrofit bulbs and small luminaires.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for VIPER22ADIP — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | VIPER22AS | LNK304PN | NCP1014AP100 |
|---|---|---|---|---|
| Package | DIP-8 | SO-8 | DIP-8 | DIP-8 |
| Brand | STMicroelectronics | STMicroelectronics | Power Integrations | onsemi |
| Output Power (230VAC) | 12 W | 12 W | 12 W | 10 W |
| Switching Frequency | 60 kHz | 60 kHz | 66 kHz | 100 kHz |
| Power MOSFET Breakdown Voltage | 730 V | 730 V | 700 V | 700 V |
| Standby Power | < 0.5 W | < 0.5 W | < 0.3 W | < 0.1 W |
| Protection Features | OCP, OVP, OTP | OCP, OVP, OTP | OCP, OTP | OCP, OVP, OTP |
| Frequency Jittering | Yes | Yes | Yes | No |
Pangunahing mga Pagkakaiba
- Integrated 730V avalanche-rugged Power MOSFET (kumpara saLNK304PN)
- Frequency jittering for EMI reduction (kumpara saNCP1014AP100)
- Same-brand package variants for design flexibility (kumpara saVIPER22AS)
Talaan ng Disenyo
For the VIPER22ADIP, ensure adequate copper area on the drain and source pins for heat dissipation. The DIP-8 package has a junction-to-ambient thermal resistance of 80°C/W, so at 12W output, the power dissipation can be significant. Use a ground plane and thermal vias to improve heat spreading. Keep the high-voltage traces short and away from sensitive feedback components to minimize noise coupling.
A common pitfall is neglecting the snubber circuit across the transformer primary. The leakage inductance can cause voltage spikes that exceed the 730V breakdown voltage of the internal MOSFET, leading to failure. Use an RCD snubber or a TVS diode to clamp the voltage. Also, ensure the feedback loop is properly compensated to avoid instability, especially in continuous conduction mode.
The VIPER22ADIP's thermal shutdown protects the device, but it should not be relied upon for normal operation. At maximum output power, the junction temperature can rise significantly. Calculate the power dissipation (PD = (VIN - VOUT) * IOUT for buck, or based on transformer design for flyback) and ensure the junction temperature stays below 125°C for reliable operation. Use a heatsink or increase copper area if necessary.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified. Halogen-free status not specified in available data.
