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STMicroelectronics VIPER06HS
- Part No.:
- VIPER06HS
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters, Offline Switches
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
VIPER06HS.pdf
- Description:
- IC OFFLINE SWITCH MULT TOP 10SSO
- Quantity:
- Payment:
- Shipping:
Inventory:5,591
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Product details
Overview
VIPER06HS from STMicroelectronics is a high-voltage offline PWM controller with integrated 800 V avalanche-rugged N-channel power MOSFET, operating at 115 kHz fixed frequency, delivering up to 5 W in open-frame designs and supporting direct mains-derived self-biasing without auxiliary winding. It targets low-power AC/DC conversion in LED drivers and home appliance power supplies.
For engineers reviewing the VIPER06HS datasheet, VIPER06HS pinout, VIPER06HS application, or VIPER06HS equivalent, this page provides verified pin functions, confirmed thermal shutdown behavior (150–160 °C), burst-mode operation (VCOMPL = 1.1 V), adjustable current limit via LIM pin, and real-world standby power (<30 mW at 265 VAC).
Technical Context
The VIPER06HS implements a current-mode flyback controller with integrated SenseFET-based cycle-by-cycle current sensing and internal transconductance error amplifier (GM = 2 mA/V, VREF_FB = 3.3 V). Its oscillator uses fixed-frequency spread-spectrum jittering (±8 kHz at 230 Hz) to reduce EMI without external components.
Startup relies on high-voltage current generator activated at VDRAIN_START (25–45 V), transitioning to VDD-powered operation above VDDon (12–14 V); undervoltage lockout occurs below VDDoff (7–9 V). Fault recovery includes hysteretic thermal shutdown (THYST = 30 °C) and safe auto-restart after tRESTART = 1 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating frequency | 115 kHz fixed switching frequency - enables compact magnetics and reduces transformer size for sub-5 W applications. |
| Drain breakdown voltage | 800 V - supports direct rectified mains input (up to 375 VDC) without external HV MOSFET or snubber. |
| Standby power | <30 mW at 265 VAC - meets EU CoC Tier 2 and DOE Level VI energy efficiency requirements. |
| Current limit threshold | 0.35 A typical (adjustable via LIM pin resistor) - sets peak drain current for overcurrent protection and power scaling. |
| Thermal shutdown | 150–160 °C with 30 °C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Burst mode entry | VCOMP ≤ 1.1 V (VCOMPL) - reduces average switching frequency to ~few hundred Hz under light load, minimizing no-load losses. |
| FB reference voltage | 3.3 V ±0.1 V - defines output regulation point when using single-resistor feedback in non-isolated topologies. |
Pinout & Package
The VIPER06HS is available in SSO10 package (10-pin shrink small outline) with exposed metal pad for thermal dissipation. DRAIN pins (6–10) are internally paralleled and connected to the metal frame for enhanced thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Controller ground reference | Common return for internal logic, error amplifier, and source of power MOSFET - must be low-impedance connection to PCB ground plane. |
| VDD (Pin 2) | Control section supply | Charged by internal HV current generator during startup; powers all control circuitry - requires ≥10 µF ceramic + electrolytic capacitor. |
| LIM (Pin 3) | Adjustable current limit set point | Sinks current to GND via external RLIM resistor; sets reduced IDlim (0.35 A default if open) - enables precise power limiting. |
| FB (Pin 4) | Inverting input of error amplifier | Receives feedback voltage; regulates output to 3.3 V reference - single resistor suffices for 3.3 V output; divider needed for higher voltages. |
| COMP (Pin 5) | Error amplifier output / loop compensation node | Drives RC compensation network; also interfaces with optocoupler in isolated designs - voltage range 1.1–3.0 V defines burst and full-power modes. |
| DRAIN (Pins 6–10) | High-voltage power switch drain | Paralleled internal MOSFET drains; carries full primary current and HV startup bias - must connect to large copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 800 V power MOSFET | Eliminates need for external HV switch and associated gate drive circuitry - reduces BOM count and layout complexity in <5 W SMPS. |
| Self-biasing startup | Draws initial current directly from DRAIN pins - removes requirement for auxiliary winding or dedicated bias supply in low-cost flyback designs. |
| Frequency jittering | ±8 kHz modulation at 230 Hz - spreads EMI energy across spectrum, easing compliance with CISPR-22 Class B conducted emissions limits. |
| Hysteretic thermal shutdown | 150–160 °C trip with 30 °C hysteresis - ensures reliable recovery after overheating without oscillatory shutdown/restart behavior. |
| Safe auto-restart | 1 s delay after fault with soft-start re-engagement - prevents thermal runaway during persistent short-circuit while maintaining system safety. |
Applications
| LED Lighting Drivers | Smart Home Appliance Power Supplies |
|---|---|
Use Scenario: Constant-voltage LED driver for smart bulbs and downlights operating directly from 85–265 VAC mains. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with integrated HV switch and burst-mode light-load management. Use Value: Achieves <30 mW no-load consumption and eliminates optocoupler and TL431, reducing cost and component count by >30%. | Use Scenario: Standby and main power supply for washing machine control boards, HVAC thermostats, and coffee makers. IC Role / Device Role / Timing Role: Offline AC/DC converter providing isolated 5 V/3.3 V rails with built-in OCP, OTP, and open-loop failure protection. Use Value: Meets IEC 60335-1 reinforced isolation requirements via transformer design, while enabling <0.5 W total system standby. |
| Energy Meter Auxiliary Supply | Industrial Sensor Node Power |
Use Scenario: Auxiliary power for microcontroller and metrology ICs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Non-isolated buck-derived converter powered from meter's main DC bus, leveraging VIPER06HS's direct bias capability. Use Value: Delivers stable 3.3 V at 100 mA with <100 mW total input power - avoids need for separate isolated DC/DC module. | Use Scenario: Compact, sealed power supply for battery-less wireless sensor nodes deployed in factory automation environments. IC Role / Device Role / Timing Role: Mains-powered flyback converter with thermal derating and burst-mode efficiency optimization for intermittent RF transmission loads. Use Value: Maintains 75% efficiency at 10% load and survives ambient temperatures up to 70 °C without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QS03G | 650 V rated MOSFET; requires external startup resistor; no integrated HV current generator | Needs auxiliary winding or startup circuit; lower max input voltage margin | Prefer when existing design uses external bias and 650 V rating suffices for regional mains (e.g., 230 VAC only) |
| LNK306P | 700 V MOSFET; frequency varies with load (variable frequency); no adjustable current limit pin | Higher EMI risk without jitter; less precise current limiting for consistent power scaling | Choose when lowest BOM cost is critical and variable frequency is acceptable for EMI filtering |
Compared with ICE2QS03G and LNK306P, VIPER06HS offers superior 800 V ruggedness, true self-biasing, and programmable current limit - making it optimal for global-input, cost-sensitive, thermally constrained designs where reliability and regulatory compliance are mandatory.
Availability
VIPER06HS is available at Aetrix Electronics and suitable for LED lighting drivers, smart home appliance power supplies, and energy meter auxiliary supplies requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for VIPER06HS 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 analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The VIPER series targets highly integrated, low-cost AC/DC conversion for sub-10 W applications - emphasizing ruggedness, energy efficiency, and minimal external component count in cost-sensitive power supply designs.
FAQ
What is the maximum continuous output power achievable with VIPER06HS in an open-frame design?
VIPER06HS delivers up to 5 W continuous output power in open-frame configurations at 50 °C ambient with adequate heat sinking, as confirmed in Table 1 of the official datasheet. This assumes proper PCB copper area under DRAIN pins and use of recommended flyback topology with optimized transformer design.
Can VIPER06HS operate without an auxiliary winding in isolated flyback topologies?
Yes - VIPER06HS supports direct self-biasing from the DRAIN pins, eliminating the need for an auxiliary winding in both isolated and non-isolated flyback designs. In isolated configurations, the FB pin must be shorted to GND and feedback is implemented via optocoupler connected to the COMP pin.
How does the LIM pin adjust the current limit, and what is the default value?
The LIM pin sinks current to GND through an external resistor RLIM; decreasing RLIM lowers the drain current limit IDlim from its default 0.35 A. Figure 14 in the datasheet shows the exact IDlim vs. RLIM relationship. Leaving LIM open retains the default limit, while RLIM > 80 kΩ has negligible effect.
What thermal protection mechanisms are built into VIPER06HS?
VIPER06HS features hysteretic thermal shutdown with activation at 150–160 °C and 30 °C hysteresis, plus safe auto-restart after 1 s. It also includes open-loop failure protection that disables switching if feedback is lost, preventing uncontrolled output voltage rise and secondary-side component stress.
VIPER06HS 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:
- 115kHz
- 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
VIPER06HS FAQ
1.How can I place an order for VIPER06HS through Aetrix?
Please submit a Request for Quotation (RFQ) for VIPER06HS 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 VIPER06HS reliable?
The price and inventory of VIPER06HS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER06HS is usually 5 days.
3.What payment methods are accepted for VIPER06HS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER06HS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VIPER06HS?
VIPER06HS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VIPER06HS 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 VIPER06HS?
For technical support, including VIPER06HS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER06HS requirements.
6.How does Aetrix verify that VIPER06HS is sourced from the original manufacturer or authorized distributors?
All VIPER06HS 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 VIPER06HS meets industry standards.
7.What is the process for return or replacement of VIPER06HS?
All VIPER06HS units undergo pre-shipment inspection (PSI). If there is an issue with VIPER06HS, 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 VIPER06HS part is unused and in its original packaging.
Return procedure for VIPER06HS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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