VIPer22A SMPS Primary Switcher IC – DIP-8

Description

The VIPer22A SMPS Primary Switcher IC, manufactured by STMicroelectronics, is a highly integrated power management chip designed to simplify the construction and repair of low-power Switch Mode Power Supplies (SMPS). It cleverly combines a dedicated current-mode PWM controller with a rugged, high-voltage avalanche power MOSFET all within a single standard DIP-8 package.

Available at Tomson Electronics, the VIPer22A is incredibly popular for offline power conversion. It features a wide VDD voltage range of 9V to 38V, a fixed 60 kHz switching frequency, and built-in protections against over-temperature, over-voltage, and over-current. Whether you are a hardware engineer designing a custom standby power module or a technician repairing a consumer appliance power board, this IC provides a highly reliable, low-component-count solution.

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Specifications

• Manufacturer: STMicroelectronics
• Model: VIPer22A (VIPER22ADIP-E)
• Package Type: 8-Pin DIP (Through-hole)
• Drain Voltage (Vds): Up to 730V
• VDD Supply Voltage: 9V to 38V
• Switching Frequency: Fixed 60 kHz
• Output Power Capability: 20W (European mains 195-265 Vac) / 12W (Wide range 85-265 Vac)
• Built-in Protections: Thermal shutdown, over-voltage, and short-circuit protection

Datasheet

Download VIPer22A (STMicroelectronics) Datasheet PDF

Applications

• Consumer Appliance Repair: A direct replacement component for repairing burnt-out power supply boards in DVD players, set-top boxes, and satellite receivers.
• Standby Power Supplies: Designing highly efficient auxiliary and standby AC-DC power supplies for heavy machinery or ATX power units.
• LED Drivers: Acting as the primary switching regulator in compact, low-power constant-current LED lighting drivers.
• Wall Adapters: Building custom, low-component-count wall plug adapters for microcontroller projects and consumer electronics.

Frequently Asked Questions (FAQ)

Q: Can the VIPer22A replace a burnt IC in my set-top box?
A: Yes. The VIPer22A is one of the most common SMPS controller ICs found in consumer electronics like DVD players, set-top boxes, and DTH receivers. Just ensure the original chip is explicitly marked VIPer22A and uses the same DIP-8 package.

Q: Does this IC require an external oscillator crystal?
A: No, the VIPer22A features an internal oscillator that is factory-fixed at 60 kHz, significantly reducing the external component count needed to build a working power supply.

Q: Do I need a heatsink for this DIP-8 package?
A: Typically, no. For low-power applications (under 12W on universal mains), the thermal dissipation of the DIP-8 package itself is sufficient, combined with the IC's built-in thermal shutdown protection which prevents catastrophic overheating.

Package Includes

• 1 × VIPer22A SMPS Primary Switcher IC (STMicroelectronics) – DIP-8