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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

STMicroelectronics VIPER100A(022Y)

Name: VIPER100A(022Y)
Brand: STMicroelectronics
SKU: VIPER100A(022Y)
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VIPER100A(022Y)

Manufacturer:: STMicroelectronics

Category:: AC DC Converters, Offline Switches

Package:: Pentawatt-5 HV (Bent and Staggered Leads)

Datasheet:: VIPER100A(022Y).pdf

Description:: IC OFFLIN CONV FLBACK 5PENTAWATT

Quantity:: RFQ Add To RFQ list

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Inventory:3,793

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Product details

Overview

VIPER100A(022Y) from STMicroelectronics is a high-voltage, current-mode PWM controller with integrated 700 V/3 A vertical power MOSFET, designed for primary-side offline SMPS in wide-range AC inputs (85–265 VAC). It delivers up to 100 W in single-range or doubler configurations, features adjustable 90–110 kHz switching frequency, internal 13 V VDD regulation, and burst-mode operation enabling <1 W standby consumption compliant with Blue Angel norm.

For engineers reviewing the VIPER100A(022Y) datasheet, VIPER100A(022Y) pinout, VIPER100A(022Y) application, or VIPER100A(022Y) equivalent, key selection considerations include its integrated HV start-up current source, 2.8 Ω R_DS(on) at T_j = 100°C, 140–170°C thermal shutdown threshold, 0.5 V current-sense offset, and PENTAWATT HV (022Y) package compatibility with snubberless flyback designs.

Technical Context

The VIPER100A(022Y) implements a current-mode control architecture with inner peak-current sensing via SenseFET and outer voltage regulation through a transconductance error amplifier (G_m = 1.5 mA/V typical). Its oscillator uses an external R_t-C_t network, delivering stable frequency (±10% over V_DD = 9–15 V) and supporting external synchronization via the OSC pin.

Undervoltage lockout (UVLO) operates with 8 V turn-on and 7.5 V turn-off thresholds (2.4–3 V hysteresis), while overtemperature protection triggers at 140–170°C with 40°C hysteresis. The device integrates soft-start via COMP-pin capacitance, automatic burst-mode entry below ~1 W load, and blanking (250–360 ns) to suppress false current-sense triggering from parasitic spikes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	700 V - Withstands full rectified 265 VAC mains surges without external clamping
R_DS(on)	2.8 Ω @ T_j = 100°C - Enables efficient 100 W output in single-range flyback with minimal conduction loss
F_SW	90–110 kHz - Adjustable via R_t-C_t; supports EMI optimization and transformer size reduction
I_DPEAK	3–5.3 A - Internally set current limit ensures short-circuit robustness; externally adjustable via COMP pin
V_DD Reg	13 V ±2% - Integrated Zener reference powers control circuitry and enables primary/secondary regulation flexibility
T_SD	140–170°C - Thermal latch shuts down MOSFET until junction cools by ≥40°C, preventing thermal runaway
I_Q(STBY)	<2 mA - Ultra-low quiescent current enables sub-1 W system standby per Blue Angel requirements

Pinout & Package

Package: PENTAWATT HV (022Y), 5-pin thermally enhanced SIP, with exposed metal tab for direct heatsinking (R_thj-case = 1.4 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
DRAIN	Integrated MOSFET drain	Connects to rectified AC input; supplies internal HV start-up current during boot; handles unclamped avalanche energy (E_AR = 60 mJ)
SOURCE	MOSFET source / power ground	Primary-side return path; referenced for current-sense comparator; ties to transformer primary ground
VDD	Low-voltage supply & regulation node	Provides bias for control logic; regulated to 13 V; UVLO monitoring point; connects to optocoupler feedback in secondary regulation
OSC	Oscillator timing & sync input	Accepts R_t-C_t for frequency setting; tolerant to V_DD variation; accepts external clock for synchronization
COMP	Error amplifier output & shutdown control	Drives compensation network; sinks/supplies ±600 µA; drops below 0.5 V to force zero-duty-cycle burst mode

Key Features

Feature	Design Value
Integrated HV start-up current source	Eliminates external high-voltage resistor; reduces no-load power and component count in auxiliary winding-less designs
Burst-mode operation	Automatically engages below ~1 W load; maintains output regulation with low-frequency ripple and <1 W total system consumption
Snubberless operation capability	Withstands unclamped inductive switching stress (ID_AR = 1.4 A) due to rugged 700 V MOSFET and internal avalanche rating
Primary/secondary regulation support	VDD pin serves dual role: internal 13 V reference for primary sensing or external 8.5–12.5 V input for optocoupler-based secondary feedback
Programmable current limit	Peak current threshold adjusted via COMP pin voltage (0.5 V offset + 0.7–1.3 V/A gain), enabling precise overload and short-circuit response

Applications

AC-DC Adapters

LED Driver Power Supplies

Use Scenario: 12 V/2 A universal-input wall adapter for consumer electronics.

IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch; regulates output via auxiliary winding feedback; sets 100 kHz switching frequency.

Use Value: Reduces BOM count by integrating HV MOSFET and start-up circuit; achieves <0.8 W no-load consumption meeting EU CoC Tier 2.

Use Scenario: Constant-voltage LED driver for indoor architectural lighting (24 V/1.5 A).

IC Role / Device Role / Timing Role: Flyback controller with primary-side regulation; manages dimming-compatible constant voltage output; operates in burst mode at low dim levels.

Use Value: Enables flicker-free dimming down to 5% load while maintaining regulation accuracy and thermal safety via integrated OTP.

Industrial Control Power

White Goods Auxiliary Supplies

Use Scenario: 5 V/0.5 A auxiliary supply for PLC I/O modules operating from 90–305 VAC.

IC Role / Device Role / Timing Role: Isolated offline SMPS controller; withstands line surges up to 4 kV ESD; provides clean, regulated bias for microcontrollers and sensors.

Use Value: Eliminates need for external transient protection and startup resistors; ensures reliable start-up even under brownout conditions (UVLO hysteresis prevents chatter).

Use Scenario: Standby power supply (<1 W) for refrigerator mainboard MCU and display.

IC Role / Device Role / Timing Role: Always-on primary-side converter; enters autonomous burst mode during door-open/idle states; maintains 3.3 V rail with <0.3 W consumption.

Use Value: Meets stringent global energy standards (Blue Angel, Energy Star); avoids external enable/disable logic by using COMP pin shutdown.

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
ICE2QS03G	650 V MOSFET, fixed 65 kHz frequency, no integrated HV start-up; requires external bootstrap resistor	Lacks burst mode and <1 W standby capability; suited for cost-sensitive non-regulatory designs	Choose when lower BOM cost outweighs efficiency and regulatory compliance needs
LNK306P	700 V MOSFET, 66 kHz, integrated auto-restart, but no programmable current limit or external sync capability	Supports basic no-load regulation but lacks COMP-driven precision current limiting and oscillator synchronization	Prefer for ultra-simple, low-component-count designs where frequency flexibility and fine current control are not required

Compared with ICE2QS03G and LNK306P, VIPER100A(022Y) uniquely combines 700 V ruggedness, adjustable frequency, burst-mode <1 W standby, and COMP-pin programmable current limiting-enabling higher power density, tighter regulation, and full Blue Angel compliance in single-chip solutions.

Availability

VIPER100A(022Y) is available at Aetrix Electronics and suitable for AC-DC adapters, LED drivers, industrial control power supplies, and white goods auxiliary supplies requiring stable component supply and long-term design-in support.

Supply support for VIPER100A(022Y) 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, specializing in power management, analog, microcontrollers, and automotive ICs with strong manufacturing and R&D infrastructure across Europe and Asia.

The VIPer series targets highly integrated, cost-optimized offline SMPS solutions for consumer, industrial, and appliance markets-designed to replace discrete MOSFET+controller combinations with single-package reliability and regulatory compliance.

FAQ

What is the maximum continuous output power achievable with VIPER100A(022Y) in a flyback topology?

The VIPER100A(022Y) supports up to 100 W in single-range (230 VAC) or doubler configurations, and 50 W in universal-input (85–265 VAC) operation. Actual output depends on transformer design, cooling, and layout; thermal derating begins above 85°C case temperature due to its 1.4 °C/W junction-to-case resistance.

Can VIPER100A(022Y) operate without an auxiliary winding for VDD supply?

Yes-the integrated high-voltage start-up current source draws bias directly from the DRAIN pin during initial power-up, eliminating the need for an auxiliary winding in low-power or cost-sensitive designs. Once running, the device transitions to auxiliary winding supply or continues drawing from DRAIN if auxiliary is absent, within thermal limits.

How does burst-mode operation maintain output regulation at very low loads?

Burst mode activates when COMP voltage falls below 0.5 V, forcing zero duty cycle. As VDD decays below 7.5 V, UVLO resets the chip, restarting switching until VDD reaches 11 V. This cyclic on/off behavior sustains average output voltage while reducing RMS input current-achieving <1 W system consumption with ±5% output regulation and low-frequency ripple.

Is the PENTAWATT HV (022Y) package RoHS-compliant and lead-free?

Yes-VIPER100A(022Y) in PENTAWATT HV (022Y) packaging conforms to RoHS Directive 2011/65/EU and is lead-free. The package uses matte tin (Sn) termination finish and meets JEDEC J-STD-020 moisture sensitivity level MSL3, with peak reflow temperature of 260°C.

VIPER100A(022Y) Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: VIPER™

Package/Case:: Pentawatt-5 HV (Bent and Staggered Leads)

Packaging:: Tube

Product Status:: Obsolete

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 700V

Topology:: Flyback

Voltage - Start Up:: 11 V

Voltage - Supply (Vcc/Vdd):: 8V ~ 15V

Duty Cycle:: -

Frequency - Switching:: Up to 200kHz

Power (Watts):: 100 W

Fault Protection:: Current Limiting, Over Temperature

Control Features:: EN, Frequency Control, Soft Start

Operating Temperature:: -

Grade:: -

Qualification:: -

Supplier Device Package:: 5-PENTAWATT

Mounting Type:: Surface Mount

VIPER100A(022Y) FAQ

1.How can I place an order for VIPER100A(022Y) through Aetrix?

Please submit a Request for Quotation (RFQ) for VIPER100A(022Y) 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 VIPER100A(022Y) reliable?

The price and inventory of VIPER100A(022Y) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER100A(022Y) is usually 5 days.

3.What payment methods are accepted for VIPER100A(022Y)?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER100A(022Y) transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VIPER100A(022Y)?

VIPER100A(022Y) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VIPER100A(022Y) 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 VIPER100A(022Y)?

For technical support, including VIPER100A(022Y) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER100A(022Y) requirements.

6.How does Aetrix verify that VIPER100A(022Y) is sourced from the original manufacturer or authorized distributors?

All VIPER100A(022Y) 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 VIPER100A(022Y) meets industry standards.

7.What is the process for return or replacement of VIPER100A(022Y)?

All VIPER100A(022Y) units undergo pre-shipment inspection (PSI). If there is an issue with VIPER100A(022Y), 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 VIPER100A(022Y) part is unused and in its original packaging.

Return procedure for VIPER100A(022Y):

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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