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STMicroelectronics VIPER06XS
- Part No.:
- VIPER06XS
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters, Offline Switches
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
VIPER06XS.pdf
- Description:
- IC OFFLINE SWITCH MULT TOP 10SSO
- Quantity:
- Payment:
- Shipping:
Inventory:5,737
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Product details
Overview
VIPER06XS from STMicroelectronics is a high-voltage offline PWM controller with integrated 800 V avalanche-rugged N-channel power MOSFET, designed for flyback and buck converters in low-power AC/DC applications. It delivers up to 6 W in enclosed adapters and 8 W in open-frame designs at 230 VAC, operates at fixed 30 kHz switching frequency with ±2 kHz jitter, achieves <30 mW standby power at 265 VAC, and supports direct mains-powered startup without auxiliary winding - enabling compact, energy-compliant LED drivers and home appliance power supplies.
For engineers reviewing the VIPER06XS datasheet, VIPER06XS pinout, VIPER06XS application, or VIPER06XS equivalent, this page provides verified technical context on its self-biasing HV current generator, adjustable overcurrent limit via LIM pin, burst-mode operation below 1.1 V on COMP, hysteretic thermal shutdown at 150–160 °C, and FB/COMP feedback architecture for isolated and non-isolated topologies.
Technical Context
The VIPER06XS integrates a SenseFET-based current-sensing power stage with 32 Ω typical RDS(on) at 25 °C and 800 V breakdown voltage, enabling cycle-by-cycle current limiting and lossless sensing. Its controller includes an internal transconductance error amplifier (GM = 2 mA/V) referenced to 3.3 V at FB, with COMP output swing between 1.1 V (burst threshold) and 3.0 V (saturation).
Startup relies on a high-voltage current generator activated when DRAIN exceeds 25–45 V, charging VDD until it reaches 12–14 V; steady-state biasing uses either self-supply (via DRAIN during MOSFET off-time) or auxiliary winding. The oscillator implements fixed 30 kHz operation with 230 Hz spread-spectrum modulation (±2 kHz) to reduce EMI peak emissions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching frequency | 30 kHz ±2 kHz - fixed-frequency jittered operation reduces EMI filter cost and simplifies compliance testing. |
| Drain-source breakdown | 800 V - enables direct connection to universal AC input (85–265 VAC) without external HV MOSFET. |
| Standby power | <30 mW at 265 VAC - meets Energy Star and EU CoC Tier 2 efficiency requirements for no-load conditions. |
| FB reference voltage | 3.3 V ±0.1 V - sets regulated output voltage directly via single resistor (non-isolated) or divider (isolated). |
| Thermal shutdown | 150–160 °C with 30 °C hysteresis - prevents latch-up during sustained overload and enables safe auto-restart after cooling. |
| Burst mode trigger | COMP pin voltage ≤1.1 V - reduces average switching frequency to hundreds of Hz under light load, minimizing core and switching losses. |
| Current limit adjust | LIM pin sinks current to set drain limit from default 0.35 A down to lower values using external resistor - enables precise OCP tuning per design. |
Pinout & Package
The VIPER06XS is available in SSO10 (10-lead shrink small outline) and DIP-7 (7-pin dual in-line) packages. Both feature exposed drain pads (pins 7 & 8 in DIP-7; pins 6–10 in SSO10) connected to the metal frame for enhanced thermal dissipation. Copper area under drain pins is mandatory for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (DIP-7 pin 1 / SSO10 pin 1) | Controller ground reference | Source node for internal MOSFET and analog circuitry; must be low-impedance connection to PCB ground plane. |
| VDD (DIP-7 pin 2 / SSO10 pin 2) | Control section supply | Charged by HV current generator; powers internal logic; clamped at 23.5 V; UVLO thresholds at 12–14 V (on), 7–9 V (off). |
| LIM (DIP-7 pin 3 / SSO10 pin 3) | Adjustable current limit input | Sinks current to scale drain overcurrent threshold; open-circuit = default 0.35 A; RLIM ≥80 kΩ disables adjustment. |
| FB (DIP-7 pin 4 / SSO10 pin 4) | Inverting input of error amplifier | Accepts feedback voltage; internal 3.3 V reference; pull-up if floating; used for regulation in non-isolated or opto-coupled isolated topologies. |
| COMP (DIP-7 pin 5 / SSO10 pin 5) | Error amplifier output | Drives compensation network and PWM comparator; 1.1–3.0 V dynamic range; burst mode enters at ≤1.1 V; saturation at ≥3.0 V limits output power. |
| DRAIN (DIP-7 pins 7 & 8 / SSO10 pins 6–10) | High-voltage power switch drain | Carries full primary current; connects to bulk capacitor and transformer primary; requires thermal copper pour for heat sinking. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 800 V power MOSFET | Eliminates need for external HV switch and gate driver, reducing BOM count and layout complexity in sub-10 W SMPS. |
| Self-biasing startup | Draws initial current directly from rectified mains via DRAIN pin - removes auxiliary winding requirement in low-power flyback designs. |
| Programmable overcurrent protection | LIM pin allows precise setting of peak drain current threshold using one external resistor - improves fault tolerance across line/load variations. |
| Hysteretic thermal shutdown | Shuts down at 150–160 °C and restarts only after cooling by ≥30 °C - prevents thermal runaway during sustained overload or poor heatsinking. |
| Frequency jittering | ±2 kHz modulation at 230 Hz spreads spectral energy - lowers EMI peak amplitude and eases compliance with CISPR 22/32 Class B limits. |
Applications
| LED Lighting Power Supply | Smart Home Appliance PSU |
|---|---|
Use Scenario: Constant-voltage LED driver for GU10 and E27 retrofit lamps operating directly from 230 VAC mains. IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch in non-isolated flyback topology; regulates output via single-resistor FB connection. Use Value: Achieves <30 mW no-load consumption and 30 kHz jittered switching - meets IEC 62384 and EN 61000-3-2 harmonic limits without X/Y capacitors. | Use Scenario: Standby and main power supply for washing machine control board, powering MCU, display, and relay drivers. IC Role / Device Role / Timing Role: Dual-output (5 V + 12 V) isolated flyback controller with optocoupler feedback; handles 85–265 VAC input with brownout immunity. Use Value: Burst-mode operation below 1.1 V on COMP ensures <50 mW total system standby power - satisfies ENERGY STAR Version 8.0 requirements. |
| Energy Meter Auxiliary Supply | Capacitive Dropper Replacement |
Use Scenario: Auxiliary power source for three-phase smart electricity meters, powering metrology ICs and RF modules from 230 VAC line. IC Role / Device Role / Timing Role: High-reliability, open-frame flyback converter with reinforced isolation; uses DRAIN pins for thermal coupling to heatsink. Use Value: 800 V MOSFET withstands lightning surges per IEC 61000-4-5 Level 3; thermal shutdown prevents failure during meter tampering or grid faults. | Use Scenario: Direct replacement of inefficient and unreliable capacitive dropper supplies in low-cost AC-powered sensors and timers. IC Role / Device Role / Timing Role: Integrated offline converter delivering regulated 5 V/100 mA output without series capacitor or zener diode. Use Value: Eliminates risk of capacitor explosion and improves safety to SELV standards - enables UL/IEC 62368-1 certification without additional isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QS03G | Fixed 65 kHz frequency; no integrated MOSFET; requires external 600 V switch; higher quiescent current (1.8 mA vs 1.3 mA) | Needs auxiliary winding for startup; less suitable for ultra-low standby designs | Select when higher switching frequency is needed for smaller magnetics and tighter regulation is required via external error amp. |
| LNK304P | 700 V MOSFET; 66 kHz operation; integrated X-cap discharge; no LIM pin adjustment | Lower voltage rating limits use in 265 VAC surge-prone environments; lacks programmable OCP | Prefer for cost-sensitive consumer adapters where 700 V margin suffices and simplified protection is acceptable. |
Compared with ICE2QS03G and LNK304P, the VIPER06XS offers superior surge robustness (800 V), lower standby power (<30 mW), and user-adjustable overcurrent limit - making it optimal for safety-critical, energy-regulated, and thermally constrained applications like smart meters and LED drivers.
Availability
VIPER06XS is available at Aetrix Electronics and suitable for LED lighting power supplies, smart home appliance PSUs, energy meter auxiliary supplies, and capacitive dropper replacements requiring stable component supply across industrial and consumer production programs.
Supply support for VIPER06XS 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, specializing in power management, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.
The VIPER™ family is ST's dedicated high-voltage AC/DC converter platform targeting low-power offline SMPS - engineered for energy efficiency, surge resilience, and integration to replace discrete power supply solutions.
FAQ
What is the maximum continuous output power achievable with VIPER06XS in an open-frame design?
The VIPER06XS delivers up to 8 W continuous output power at 230 VAC in an open-frame configuration with adequate heatsinking and ambient temperature ≤50 °C. This assumes proper PCB copper area under DRAIN pins, optimized transformer design, and operation within thermal limits - exceeding the 6 W rating for enclosed adapters due to improved convection cooling.
Can VIPER06XS operate without an auxiliary winding in isolated flyback topologies?
Yes - VIPER06XS supports auxiliary-winding-free operation in isolated flyback designs using its self-biasing high-voltage current generator. During startup and steady state, it draws bias current directly from the DRAIN pin, eliminating the need for an auxiliary winding while maintaining regulation via optocoupler feedback to the COMP pin.
How does the LIM pin adjust the overcurrent threshold, and what is the minimum achievable limit?
The LIM pin sinks current proportional to the desired drain current limit; connecting an external resistor RLIM between LIM and GND scales IDlim downward from the default 0.35 A. Per Figure 14 in the datasheet, a 10 kΩ resistor reduces the limit to ~0.15 A, and values below 5 kΩ further decrease it - enabling precise OCP tuning for transformer saturation avoidance or short-circuit current limiting.
What happens during burst mode, and how does it improve light-load efficiency?
When COMP voltage drops to ≤1.1 V, VIPER06XS enters burst mode: the power MOSFET stops switching, reducing supply current to 0.6 mA (IDD0), then resumes switching once COMP rises above 1.14 V due to load-induced voltage recovery. This ON-OFF cycling lowers average switching frequency to hundreds of Hz, cutting core, gate drive, and snubber losses - achieving <30 mW standby power and meeting strict energy regulations.
VIPER06XS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- VIPer™ plus
- 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, Flyback
- Voltage - Start Up:
- 13 V
- Voltage - Supply (Vcc/Vdd):
- 11.5V ~ 23.5V
- Duty Cycle:
- 70%
- Frequency - Switching:
- 30kHz
- Power (Watts):
- 8 W
- Fault Protection:
- Current Limiting, Open Loop, Over Temperature
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-SSOP
- Mounting Type:
- Surface Mount
VIPER06XS FAQ
1.How can I place an order for VIPER06XS through Aetrix?
Please submit a Request for Quotation (RFQ) for VIPER06XS 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 VIPER06XS reliable?
The price and inventory of VIPER06XS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER06XS is usually 5 days.
3.What payment methods are accepted for VIPER06XS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER06XS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VIPER06XS?
VIPER06XS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VIPER06XS 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 VIPER06XS?
For technical support, including VIPER06XS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER06XS requirements.
6.How does Aetrix verify that VIPER06XS is sourced from the original manufacturer or authorized distributors?
All VIPER06XS 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 VIPER06XS meets industry standards.
7.What is the process for return or replacement of VIPER06XS?
All VIPER06XS units undergo pre-shipment inspection (PSI). If there is an issue with VIPER06XS, 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 VIPER06XS part is unused and in its original packaging.
Return procedure for VIPER06XS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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