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STMicroelectronics VIPER22ADIP-E
- Part No.:
- VIPER22ADIP-E
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
VIPER22ADIP-E.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
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Product details
Overview
VIPER22ADIP-E from STMicroelectronics is a high-voltage, current-mode PWM controller integrated with a 730 V power MOSFET in a single DIP-8 package. It delivers up to 20 W under European mains (195–265 Vac), features fixed 60 kHz switching, 9–38 V VDD operating range, and built-in overtemperature, overcurrent, and overvoltage protection with auto-restart - designed for off-line SMPS in battery charger adapters and standby supplies.
For engineers reviewing the VIPER22ADIP-E datasheet, VIPER22ADIP-E pinout, VIPER22ADIP-E application, or VIPER22ADIP-E equivalent, key selection criteria include its integrated HV start-up current source, VDD hysteresis (6.5 V typ), FB pin current-sensing architecture, and DIP-8 thermal resistance (RthJC = 15 °C/W) enabling compact, low-cost auxiliary power designs.
Technical Context
The device implements a current-mode control loop where peak drain current is directly regulated by feedback current (IFB) into the FB pin, with gain GID = 560 typ and IDlim = 0.7 A at VFB = 0 V. Its internal oscillator maintains ±10% frequency stability (54–66 kHz) across 0–100 °C and full VDD range (9–38 V).
Startup relies on a high-voltage current source connected to the DRAIN pin, charging the external VDD capacitor until VDD reaches 14.5 V (VDDon), then disabling itself. Protection includes thermal shutdown at 170 °C with 40 °C hysteresis, VDD overvoltage latch at 42 V, and automatic burst mode below ~85 mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 60 kHz fixed - enables predictable EMI filtering and transformer design with minimal external timing components. |
| Drain-Source Voltage (BVDSS) | 730 V - supports direct connection to universal AC input (85–265 Vac) without external HV startup network. |
| VDD Operating Range | 9 V to 38 V - accommodates wide auxiliary winding voltage variation, simplifying bias supply design in flyback converters. |
| Peak Current Limit | 0.7 A typical - sets maximum primary current for safe operation with standard 1–2 mH transformers in <20 W applications. |
| VDD Hysteresis | 6.5 V typical - ensures reliable restart after undervoltage lockout without oscillation near threshold. |
| Thermal Shutdown | 170 °C with 40 °C hysteresis - provides robust thermal margin for DIP-8 packages in enclosed or convection-cooled environments. |
| FB Pin Sensitivity | Current-input (0–3 mA), not voltage - enables direct optocoupler interface without level-shifting or compensation networks. |
Pinout & Package
Package: DIP-8 (dual in-line package, 9.27 mm × 7.87 mm × 3.30 mm, ECOPACK® compliant). Thermal resistance junction-to-case is 15 °C/W, enabling higher power density than SO-8 variant in natural convection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DRAIN (Pins 1, 2, 3, 4, 5, 6, 7, 8) | Power MOSFET drain & HV start-up current source input | Connects directly to rectified AC line; supplies internal start-up current until VDD reaches 14.5 V. |
| VDD (Pin 7) | Control circuit supply & start-up capacitor node | Accepts 9–38 V; internal hysteresis comparator (VDDon = 14.5 V, VDDoff = 8 V) manages start-up sequencing. |
| SOURCE (Pin 8) | MOSFET source & control ground reference | Common return for all control circuitry; must be tied to power ground with low-inductance path. |
| FB (Pin 6) | Current-mode feedback input | Sinks 0–3 mA; regulates peak drain current via internal transconductance amplifier (GID = 560). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 730 V MOSFET + PWM controller | Eliminates external HV start-up circuit and gate driver, reducing BOM count and PCB area in <20 W SMPS. |
| Current-mode FB architecture | Enables stable regulation with optocoupler-only feedback, no secondary-side TL431 or compensation network required. |
| Auto-restart protection suite | Single-chip response to overtemperature (170 °C), overcurrent (0.7 A), and overvoltage (42 V) - no external latch needed. |
| Burst-mode light-load operation | Reduces standby power to <100 mW by skipping cycles below ~85 mA output, meeting Energy Star Level VI requirements. |
| Wide VDD operating range (9–38 V) | Supports auxiliary winding designs with ±30% voltage tolerance, easing transformer turns ratio selection and improving reliability. |
Applications
| Battery Charger Adapter | TV/Monitor Standby Supply |
|---|---|
|
Use Scenario: 5 V/1 A isolated flyback converter powering Li-ion battery charging ICs in wall adapters. IC Role / Device Role / Timing Role: Primary-side SMPS controller regulating both voltage and current via optocoupler-coupled TSM101 feedback. Use Value: Achieves rectangular U-I output characteristic (constant-current then constant-voltage) without secondary-side op-amps beyond the TSM101. |
Use Scenario: 12 V/0.3 A auxiliary supply powering microcontroller and IR receiver in TV standby mode. IC Role / Device Role / Timing Role: Off-line flyback controller operating in burst mode at <10% load to maintain <150 mW no-load consumption. Use Value: Meets EU CoC Tier 2 and DOE Level VI standby power requirements using only DIP-8 footprint and 2-layer PCB. |
| Motor Control Auxiliary Supply | Industrial Sensor Interface Power |
|
Use Scenario: 24 V/0.2 A isolated supply for gate drivers and logic in BLDC motor inverters. IC Role / Device Role / Timing Role: Primary-side controller delivering regulated bias to high-side IGBT drivers with fast transient response. Use Value: Withstands 400 V start-up stress and maintains regulation during 100 ms AC dips due to wide VDD hysteresis (6.5 V). |
Use Scenario: 5 V/0.1 A isolated supply for analog sensor signal conditioning circuits in factory automation nodes. IC Role / Device Role / Timing Role: Compact off-line SMPS providing reinforced isolation and low EMI in space-constrained DIN-rail modules. Use Value: DIP-8 package allows through-hole mounting for vibration resistance; 60 kHz frequency eases compliance with CISPR-32 Class B conducted emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar primary-side SMPS controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2A265 | Fixed 65 kHz, 650 V MOSFET, requires external start-up resistor and VDD Zener clamp | Lacks integrated HV start-up; needs additional components for same functionality | Prefer when legacy ICE2x design reuse is required and board space permits extra passives |
| LNK304P | 700 V MOSFET, 66 kHz, integrated X-cap discharge, but no VDD hysteresis or burst mode | Higher no-load power (~250 mW); less tolerant of auxiliary winding voltage drift | Choose for designs requiring integrated safety discharge but accepting higher standby loss |
Compared with ICE2A265 and LNK304P, VIPER22ADIP-E uniquely combines HV start-up integration, precise VDD hysteresis (6.5 V), and automatic burst mode - delivering lowest component count and best light-load efficiency in cost-sensitive <20 W DIP-8 designs.
Availability
VIPER22ADIP-E is available at Aetrix Electronics and suitable for battery charger adapters, TV standby supplies, and motor control auxiliary power requiring stable component supply, long-term lifecycle support, and RoHS-compliant DIP-8 packaging.
Supply support for VIPER22ADIP-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, and analog/mixed-signal devices for industrial, automotive, and consumer markets.
VIPER™ is ST's dedicated family of high-voltage offline SMPS controllers targeting cost-sensitive, low-to-medium power AC-DC conversion - optimized for simplicity, reliability, and regulatory compliance in adapter and auxiliary supply applications.
FAQ
What is the minimum recommended VDD capacitor value for reliable startup?
A 10 µF/50 V electrolytic capacitor is recommended on the VDD pin to ensure sufficient energy storage during startup. With lower values (<4.7 µF), the VDD voltage may collapse before the auxiliary winding begins supplying power, causing startup failure - especially under low-line (85 Vac) conditions where start-up time is longest.
Can VIPER22ADIP-E operate without an optocoupler in the feedback path?
No - the FB pin requires controlled current injection (0–3 mA) to regulate output. An optocoupler is mandatory for isolated designs. Non-isolated applications may use resistive feedback to the FB pin, but this sacrifices safety isolation and violates IEC 62368-1 requirements for AC-connected equipment.
How does the device behave during output short-circuit conditions?
Under sustained short-circuit, the FB pin current rises, triggering current limiting and thermal foldback. The device enters auto-restart mode: it shuts down when VDD drops below 8 V, waits for thermal recovery, then attempts restart. This limits average power dissipation to <1 W and prevents MOSFET destruction.
Is the DIP-8 package lead-free and RoHS compliant?
Yes - VIPER22ADIP-E is manufactured in ST's ECOPACK®-compliant DIP-8 package, fully RoHS 2011/65/EU compliant with lead-free terminations and halogen-free molding compound, certified per ST's published environmental declarations.
VIPER22ADIP-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- VIPER™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 730V
- Topology:
- Flyback
- Voltage - Start Up:
- 14.5 V
- Voltage - Supply (Vcc/Vdd):
- 8V ~ 38V
- Duty Cycle:
- -
- Frequency - Switching:
- 60kHz
- Power (Watts):
- 12 W
- Fault Protection:
- Current Limiting, Over Temperature, Over Voltage
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TC)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-DIP
- Mounting Type:
- Through Hole
VIPER22ADIP-E FAQ
1.How can I place an order for VIPER22ADIP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for VIPER22ADIP-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VIPER22ADIP-E reliable?
The price and inventory of VIPER22ADIP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER22ADIP-E is usually 5 days.
3.What payment methods are accepted for VIPER22ADIP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER22ADIP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VIPER22ADIP-E?
VIPER22ADIP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VIPER22ADIP-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VIPER22ADIP-E?
For technical support, including VIPER22ADIP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER22ADIP-E requirements.
6.How does Aetrix verify that VIPER22ADIP-E is sourced from the original manufacturer or authorized distributors?
All VIPER22ADIP-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VIPER22ADIP-E meets industry standards.
7.What is the process for return or replacement of VIPER22ADIP-E?
All VIPER22ADIP-E units undergo pre-shipment inspection (PSI). If there is an issue with VIPER22ADIP-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VIPER22ADIP-E part is unused and in its original packaging.
Return procedure for VIPER22ADIP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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