My Inquiry
My Account
STMicroelectronics VIPER012XS
- Part No.:
- VIPER012XS
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters, Offline Switches
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
VIPER012XS.pdf
- Description:
- IC OFFLINE SW MULT TOP 10SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,017
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VIPER012XS from STMicroelectronics is a high-voltage off-line PWM controller IC integrating an 800 V avalanche-rugged N-channel MOSFET, current-mode control, and embedded HV startup. It supports flyback, buck, and buck-boost topologies with 60 kHz ±7% jittered switching frequency, 240 mA typical drain current limit, and self-supply operation eliminating auxiliary windings. Used in low-power SMPS for home appliances and lighting.
For engineers reviewing the VIPER012XS datasheet, VIPER012XS pinout, VIPER012XS application, or VIPER012XS equivalent, key selection criteria include its 800 V MOSFET breakdown voltage, 240 mA OCP threshold, 4.5–30 V VCC operating range, and integrated thermal shutdown with automatic restart - all critical for energy-efficient, compact AC/DC converters.
Technical Context
The VIPER012XS implements a current-mode PWM architecture with internal transconductance error amplifier (1.2 V reference), jittered oscillator (60 kHz ±7%), and cycle-by-cycle peak current limiting. Its embedded sense-FET enables lossless current sensing without external shunt resistors.
Protection logic includes pulse-skip to prevent flux-runaway, overload/short-circuit protection with 200 ms max delay (L-type), line/output OVP, UVLO (4.0 V turn-off), and thermal shutdown at 155 °C. The device operates in PFM mode under light load to achieve <10 mW no-load consumption at 230 VAC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching frequency | 60 kHz ±7% - jittered spread-spectrum reduces EMI filter size and cost |
| Drain current limit | 240 mA typ. - sets maximum peak primary current for OCP and soft-start ramp |
| VCC operating range | 4.5 V to 30 V - supports wide bias supply options including self-supply |
| MOSFET breakdown voltage | 800 V - enables universal AC input (85–265 VAC) with reduced snubber size |
| No-load power consumption | <10 mW @ 230 VAC - meets stringent energy-saving standards (e.g., EU CoC Tier 2) |
| Thermal shutdown | 155 °C - protects against sustained overtemperature in enclosed adapters |
| Soft-start time | 8 ms - prevents inrush current and output overshoot during startup or fault recovery |
Pinout & Package
Package: SSOP10 (3.9 mm × 4.9 mm, 0.65 mm pitch), thermally enhanced with DRAIN pins (6–10) connected to internal MOSFET metal pad for improved heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground and MOSFET source | Return path for bias currents and internal MOSFET source; must be isolated from pulsed return paths |
| 2 VCC | Controller supply | Charged by internal HV current source at startup; powers internal circuitry during steady-state |
| 3 DIS | Disable input | Triggers auto-restart OVP protection when voltage exceeds 1.2 V for >1 ms |
| 4 FB | Direct feedback input | Inverting input of internal 1.2 V referenced transconductance amplifier; used for primary or secondary regulation |
| 5 COMP | Compensation node | Output of internal error amplifier; connects to RC network for loop stability or optocoupler in isolated designs |
| 6–10 DRAIN | MOSFET drain terminals | High-voltage switch node; internally connected to 800 V MOSFET; requires PCB copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Self-supply operation | Eliminates auxiliary winding and bias components - reduces BOM count and board space in flyback designs |
| Jittered oscillator | ±7% frequency modulation at 260 Hz - lowers peak EMI amplitude, enabling smaller input EMI filters |
| Integrated HV startup | 800 V start-up FET with programmable ICH charging current - enables direct connection to rectified mains without external resistor networks |
| Pulse-skip protection | Prevents flux-runaway during startup or light-load conditions by skipping cycles below tON_MIN (360 ns) |
| Embedded thermal shutdown | Automatic restart after cooling - ensures reliability in thermally constrained enclosures without external thermal sensors |
Applications
| Smart Home Lighting Control | Compact AC/DC Adapter |
|---|---|
Use Scenario: Constant-voltage LED driver for smart bulbs with dimming interface and standby power <10 mW. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with integrated 800 V MOSFET and PFM light-load mode. Use Value: Enables Class VI efficiency compliance and eliminates optocoupler and TL431, reducing component count by ≥30%. | Use Scenario: 5 V/1 A wall adapter for IoT sensors operating across 85–265 VAC input. IC Role / Device Role / Timing Role: Off-line PWM controller managing DRAIN switching, current sensing, and VCC self-supply via reflected winding. Use Value: Achieves <400 mW total input power at 250 mW load while maintaining stable regulation and low EMI. |
| Home Appliance Power Supply | Industrial Motion Controller Auxiliary PSU |
Use Scenario: Standby and main power supply in washing machine control board requiring dual outputs (5 V, 12 V). IC Role / Device Role / Timing Role: Primary-side controller for multi-output flyback with OLP, OVP, and thermal protection. Use Value: Supports burst-mode operation down to 15 kHz to maintain regulation during low-power MCU sleep states. | Use Scenario: Isolated auxiliary supply for gate drivers and logic in motor control modules exposed to industrial ambient temperatures. IC Role / Device Role / Timing Role: High-reliability off-line converter with 800 V MOSFET and 155 °C thermal shutdown. Use Value: Withstands 125 °C junction temperature and delivers stable 15 V bias for SiC gate drivers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage off-line PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QS03G | 700 V MOSFET, fixed 65 kHz, no self-supply - requires external startup resistor and bias winding | Lacks integrated HV startup and self-supply; higher BOM count and noisier operation due to non-jittered oscillator | Select when legacy design reuse is required and 700 V rating suffices for 230 VAC nominal input |
| LNK364PG | 725 V MOSFET, 66 kHz, integrated X-cap discharge, but no jitter - uses primary-side regulation only | No COMP pin for secondary-side optocoupler feedback; limited to primary-sensing topologies | Choose for cost-sensitive, single-output applications where secondary regulation is unnecessary |
Compared with VIPER012XS, ICE2QS03G requires more external components and lacks jittered EMI reduction, while LNK364PG omits the flexible COMP interface and self-supply capability - making VIPER012XS superior for compact, low-EMI, dual-regulation designs.
Availability
VIPER012XS is available at Aetrix Electronics and suitable for smart home lighting control, compact AC/DC adapters, and home appliance power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for VIPER012XS 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.
VIPER012XS belongs to the VIPer™ energy-saving off-line high-voltage converter product line, engineered specifically for ultra-compact, low-noise, high-efficiency AC/DC power supplies in sub-10 W applications.
FAQ
What is the purpose of the DIS pin on VIPER012XS?
The DIS (Disable) pin provides input or output overvoltage protection: when voltage exceeds 1.2 V for more than 1 ms, it disables PWM and initiates auto-restart. In non-isolated topologies, a resistor divider from rectified mains or output rail connects to DIS; unused DIS must be tied to GND to disable the function.
Can VIPER012XS operate without an auxiliary winding?
Yes - VIPER012XS supports self-supply mode using only the VCC capacitor charged by its internal HV current source. During steady-state, VCC decays to ~4.25 V, triggering recharging via ICH3 (8.8 mA typ.), eliminating need for auxiliary winding or bias circuitry.
How does the jittered oscillator reduce EMI?
The 60 kHz switching frequency is modulated ±7% at 260 Hz, spreading spectral energy across multiple narrow bands instead of concentrating at harmonics. This lowers peak conducted emissions - especially under average detection - allowing smaller, lower-cost EMI filters to pass CISPR 22/32 tests.
What is the maximum continuous output power for VIPER012XS in open-frame design?
At 50 °C ambient with adequate heatsinking, VIPER012XS delivers up to 4.5 W continuously in open-frame configuration (85–265 VAC input). In enclosed, non-ventilated adapters, practical limit is 4 W due to thermal constraints imposed by the SSOP10 package's RTH-JA of 95 °C/W with 100 mm² copper.
VIPER012XS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 10-SOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Either
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 800V
- Topology:
- Buck, Buck-Boost, Flyback
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 30V
- Duty Cycle:
- 80%
- Frequency - Switching:
- 30kHz
- Power (Watts):
- 7 W
- Fault Protection:
- Current Limiting, Over Temperature, Over Voltage, Short Circuit
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-SSOP
- Mounting Type:
- Surface Mount
VIPER012XS FAQ
1.How can I place an order for VIPER012XS through Aetrix?
Please submit a Request for Quotation (RFQ) for VIPER012XS 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 VIPER012XS reliable?
The price and inventory of VIPER012XS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER012XS is usually 5 days.
3.What payment methods are accepted for VIPER012XS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER012XS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VIPER012XS?
VIPER012XS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VIPER012XS 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 VIPER012XS?
For technical support, including VIPER012XS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER012XS requirements.
6.How does Aetrix verify that VIPER012XS is sourced from the original manufacturer or authorized distributors?
All VIPER012XS 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 VIPER012XS meets industry standards.
7.What is the process for return or replacement of VIPER012XS?
All VIPER012XS units undergo pre-shipment inspection (PSI). If there is an issue with VIPER012XS, 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 VIPER012XS part is unused and in its original packaging.
Return procedure for VIPER012XS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VIPER012XS Tags
-
LNK6407D-TL
Power Integrations
-
LNK3204D-TL
Power Integrations
-
SR10LG-G
Microchip Technology
-
TNY285DG-TL
Power Integrations
-
LNK304DN-TL
Power Integrations
-
TNY285KG-TL
Power Integrations
-
LNK3206D-TL
Power Integrations
-
LNK623DG-TL
Power Integrations
-
TNY286PG
Power Integrations
-
LNK624DG-TL
Power Integrations
-
LNK604DG-TL
Power Integrations
-
UCC28704DBVR-1
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
