STMicroelectronics VIPER013HS

Overview

VIPER013HS from STMicroelectronics is a high-voltage off-line SMPS controller integrating an 800 V avalanche-rugged N-channel power MOSFET, current-mode PWM control, and embedded HV startup circuitry. It delivers up to 4.5 W in open-frame designs at 50 °C ambient, supports 85–265 VAC input, operates at 120 kHz ±7% (type H), and achieves <10 mW no-load consumption at 230 VAC - enabling energy-compliant low-power adapters for lighting and home appliances.

For engineers reviewing the VIPER013HS datasheet, VIPER013HS pinout, VIPER013HS application, or VIPER013HS equivalent, key selection criteria include its self-supply capability eliminating bias windings, integrated OCP/OLP/VCC clamp protections with auto-restart, thermal shutdown at 150–160 °C, and SSOP10 package with five DRAIN pins for enhanced thermal dissipation.

Technical Context

The VIPER013HS implements a fixed-frequency current-mode PWM controller with jittered oscillator (±7% spread at 260 Hz) to reduce EMI filter cost. Its internal 800 V start-up FET and switchable HV current source (ICH3 = 7.6–10 mA typ.) enable direct DRAIN-based startup and self-supply operation without auxiliary winding.

It features an embedded transconductance error amplifier (GM = 350–650 µA/V, VFB_REF = 1.2 V) with direct feedback capability, pulse-skipping PFM mode below 0.8 V on COMP, and cycle-by-cycle drain current limiting (IDLIM = 342–378 mA typ. at 25 °C) with soft-start (tSS = 5–11 ms) to prevent flux runaway during startup.

Key Specifications

Pinout & Package

Package: SSOP10 (3.9 mm × 4.9 mm, 0.65 mm pitch), thermally enhanced with five DRAIN pins connected to internal MOSFET metal pad for low R_TH-JA (95 °C/W with 100 mm² copper).

Key Features

Applications

Equivalent & Alternatives

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

Compared with VIPER013HS, ICE3B0565J offers lower unit cost but increases BOM count and EMI filter size, while LNK3206D provides better safety integration but sacrifices flexibility in feedback topology and protection configurability.

Availability

VIPER013HS is available at Aetrix Electronics and suitable for low-power SMPS in home appliances, building automation sensors, and industrial control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for VIPER013HS 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.

VIPER013HS belongs to the VIPerPlus family of high-voltage offline controllers engineered specifically for compact, energy-efficient AC/DC conversion in sub-10 W applications - prioritizing integration, low no-load power, and simplified compliance with global energy regulations.

FAQ

What is the maximum continuous output power achievable with VIPER013HS in an open-frame design?

VIPER013HS delivers up to 4.5 W continuous output power in open-frame configurations at 50 °C ambient temperature with adequate PCB copper heatsinking (100 mm²). This rating assumes 230 VAC input, 120 kHz switching, and proper layout per ST's AN4773 guidelines - exceeding typical requirements for smart home sensors and LED indicator supplies.

Can VIPER013HS operate without an auxiliary winding or external bias supply?

Yes. VIPER013HS supports self-supply mode using its integrated HV current source to charge the VCC capacitor directly from the DRAIN pin. This eliminates the need for auxiliary windings or bias resistors, reducing component count and board space - confirmed in DS11423 Section 4.4 and Figure 26.

How does the jittered oscillator improve EMI performance?

The 120 kHz oscillator modulates ±7% at 260 Hz, spreading spectral energy across multiple narrow bands instead of concentrating it at harmonics. This lowers peak conducted emissions by ~5–8 dB, enabling compliance with CISPR 22/32 Class B using smaller, lower-cost Y-capacitors and common-mode chokes - validated in ST application note AN5021.

What protection features are implemented with automatic restart behavior?

VIPER013HS includes overload/short-circuit (OLP), line/output overvoltage (OVP), VCC overvoltage clamp, and thermal shutdown - all triggering auto-restart after fault clearance. Each protection has dedicated timing (e.g., tOVL_MAX = 400 ms for type H), and restart includes full soft-start to prevent flux runaway, as detailed in Section 4.7 and Table 7 of DS11423.