STMicroelectronics VIPER013BLSTR

Overview

VIPER013BLSTR from STMicroelectronics is a high-voltage offline AC-DC converter IC integrating an 800 V avalanche-rugged power MOSFET, current-mode PWM controller, and embedded HV startup circuit. It delivers up to 5 W output in flyback/buck/buck-boost topologies, supports self-supply operation (eliminating bias winding), and achieves <10 mW no-load input power at 230 VAC - enabling compliance with stringent energy-saving standards like EU CoC v5 Tier 2 and DOE Level VI.

For engineers reviewing the VIPER013BLSTR datasheet, VIPER013BLSTR pinout, VIPER013BLSTR application, or VIPER013BLSTR equivalent, key selection criteria include its 60 kHz ±7% jittered switching frequency for EMI reduction, 360 mA typical drain current limit, 4.5–30 V VCC operating range, and SSOP10 package thermal performance with R_thJA = 90 °C/W on 100 mm² copper.

Technical Context

This IC implements a current-mode PWM control architecture with integrated error amplifier (1.2 V reference), pulse-skipping at light load, and automatic-restart protections including OCP, OLP, line/output OVP, and thermal shutdown. The embedded HV startup current source (ICH3 = 8.8 mA typ.) enables direct connection to rectified mains without auxiliary winding.

The device operates in self-supply mode by sourcing VCC charging current from the DRAIN pin via internal HV current source, eliminating external bias components. Its jittered oscillator (±7% frequency spread) reduces peak EMI, while soft-start (t_SS = 8 ms typ.) prevents inrush stress during power-up.

Key Specifications

Pinout & Package

Delivered in SSOP10 package with exposed DRAIN pads (pins 6–10) for direct thermal coupling to PCB copper area. Package outline conforms to JEDEC MO-179AB, with 0.65 mm pitch and 4.9 mm × 6.0 mm body size.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage offline converter applications.

Compared with VIPER013BLSTR, ICE2QR0665Z trades off universal input capability and ultra-low standby power for lower unit cost in fixed-input systems, while VIPER06XS extends power capability and thermal headroom at the expense of board space and component count.

Availability

VIPER013BLSTR is available at Aetrix Electronics and suitable for smart home power supplies, LED lighting drivers, industrial sensor interfaces, and appliance control board PSUs requiring stable component supply and long-term production continuity.

Supply support for VIPER013BLSTR 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The VIPer™ family targets ultra-low-power offline SMPS design, emphasizing integration, energy efficiency, and system-level simplification for cost-sensitive, space-constrained AC-DC applications.

FAQ

What is the maximum continuous output power achievable with VIPER013BLSTR in a flyback configuration?

VIPER013BLSTR supports up to 5 W continuous output power in open-frame flyback designs with adequate PCB copper area (≥100 mm² under DRAIN pins) and ambient temperature ≤50°C. At 230 VAC input, typical full-load efficiency exceeds 78% with 5 V/1 A output, limited by its 360 mA drain current threshold and 800 V MOSFET conduction losses.

Can VIPER013BLSTR operate without an auxiliary winding?

Yes - VIPER013BLSTR features self-supply capability: its internal HV current source charges the VCC capacitor directly from the DRAIN pin during startup and steady-state operation, eliminating the need for an auxiliary winding or external bias supply in most flyback and buck configurations.

How does the DIS pin implement overvoltage protection?

The DIS pin triggers auto-restart protection when voltage exceeds 1.2 V for >1 ms. For line OVP, a resistive divider connects between rectified mains and DIS; for output OVP in non-isolated topologies, the same divider connects between output and DIS. Internal hysteresis and debounce ensure immunity to transient spikes.

What layout practices are critical for thermal performance in SSOP10 package?

Thermal performance depends on copper area under pins 6–10 (DRAIN): ≥100 mm² of 35 µm-thick copper reduces R_thJA from 145 to 90 °C/W. These pins must connect directly to inner-layer thermal planes via multiple vias, and GND pin (1) must use separate low-impedance routing to avoid noise coupling into the current-sense path.