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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

STMicroelectronics VIPER53EDIP-E

Name: VIPER53EDIP-E
Brand: STMicroelectronics
SKU: VIPER53EDIP-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VIPER53EDIP-E

Manufacturer:: STMicroelectronics

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: VIPER53EDIP-E.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:207

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Product details

Overview

VIPER53EDIP-E from STMicroelectronics is an integrated offline primary switch combining a current-mode PWM controller and a 620 V high-voltage MDMesh™ Power MOSFET in a DIP-8 package. It delivers up to 50 W output power with European mains (195–265 V_AC), features adjustable peak current limiting (2 A typ.), 100 kHz oscillator frequency (±5%), and built-in burst-mode standby compliant with "Blue Angel" <0.5 W input power requirement for consumer power adapters.

For engineers reviewing the VIPER53EDIP-E datasheet, VIPER53EDIP-E pinout, VIPER53EDIP-E application, or VIPER53EDIP-E equivalent, key selection considerations include its integrated HV start-up current source (−12 mA at V_DS = 100 V), undervoltage lockout with 3.1 V hysteresis (V_DDon = 11.5 V / V_DDoff = 8.4 V), overtemperature shutdown at 160 °C, and COMP-pin-based overload protection with 8 ms delay via external TOVL capacitor.

Technical Context

The VIPER53EDIP-E implements fixed-frequency current-mode control with cycle-by-cycle peak current sensing via internal SenseFET and comparator referenced to the COMP pin (0.5–4.5 V range). Its inner loop regulates primary peak current using HCOMP = 2 V/A gain, while the outer loop sets V_COMP via optocoupler feedback for secondary-side regulation.

Burst-mode standby is triggered when V_COMP falls below 0.5 V, disabling switching until V_COMP rises above threshold; blanking time shifts from 150 ns to 400 ns at V_COMPbl = 1 V, creating hysteresis between normal (600 ns min on-time) and burst operation. Integrated HV start-up current flows from DRAIN to charge VDD, then disables after startup to minimize quiescent loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS Rating	620 V - supports universal AC input without external snubber in ≤50 W flyback designs
F_OSC	100 kHz ±5% - enables compact transformer design with low EMI and predictable thermal profile
I_Dlim	2 A typical peak drain current - sets maximum primary energy per cycle for safe operation at full load
V_DDon/V_DDoff	11.5 V / 8.4 V with 3.1 V hysteresis - ensures clean startup and brown-out immunity during line dips
T_SD	160 °C thermal shutdown - protects MOSFET junction under sustained overload or poor heatsinking
P_OUT (EU)	50 W - achievable with DIP-8 package at 195–265 V_AC, enabling compact wall adapters and auxiliary supplies
Standby Power	<0.5 W - meets Blue Angel and EU CoC Tier 2 requirements without auxiliary circuitry

Pinout & Package

DIP-8 package with creepage-optimized lead spacing for reinforced isolation in offline applications. Tab is internally connected to SOURCE pin (Pin 4/5).

Pin/Terminal	Circuit Role	Design Meaning
VDD (Pin 1)	Control supply & start-up capacitor node	Receives HV start-up current from DRAIN; UVLO thresholds (11.5 V on / 8.4 V off) define operational window
TOVL (Pin 2)	Overload timing input	Connects external 100 nF capacitor to delay COMP-triggered shutdown by 8 ms, preventing false trips
COMP (Pin 3)	Current limit reference & loop compensation	0.5–4.5 V range controls peak current; overload at >4.35 V; 0.6 mA pull-up enables optocoupler biasing
SOURCE (Pins 4 & 5)	MOSFET source & ground reference	Common return for control logic and power stage; connects to PCB ground plane for thermal and noise control
NC (Pin 6)	No connect	Internally unconnected; must remain floating per datasheet
DRAIN (Pin 7)	High-voltage MOSFET drain	Connects to primary winding; supplies start-up current to VDD; rated for 620 V blocking
OSC (Pin 8)	Oscillator timing input	External R_T-C_T network (e.g., 8 kΩ + 2.2 nF) sets 100 kHz switching frequency

Key Features

Feature	Design Value
Integrated HV start-up current source	−12 mA at V_DS = 100 V enables direct DRAIN-to-VDD charging-eliminates external start-up resistor and associated losses
Adjustable current limit via COMP pin	2 A typical peak drain current set by external feedback voltage-supports precise power limiting across line/load variations
Automatic burst-mode standby	V_COMP < 0.5 V triggers zero-switching cycles until load demand resumes-achieves <0.5 W no-load consumption without auxiliary IC
Programmable soft-start	R₅ = 2.2 kΩ + C₇ on COMP pin generates controlled V_COMP ramp-prevents output overshoot and inrush stress
Overvoltage protection on VDD	18 V shutdown threshold (trimmed) prevents control circuit damage during transient overvoltage events

Applications

USB Wall Adapter

Smart Home Sensor Power Supply

Use Scenario: Compact 5 V/2 A AC-DC adapter for USB-charged IoT devices operating from 230 V_AC mains.

IC Role / Device Role / Timing Role: Primary-side controller and power switch in discontinuous conduction mode (DCM) flyback converter.

Use Value: 50 W capability and integrated start-up allow single-chip solution with <15 mm height; burst mode ensures <0.3 W standby per EU regulations.

Use Scenario: Low-power 3.3 V/100 mA isolated supply for battery-free Zigbee/Z-Wave sensors in European residential installations.

IC Role / Device Role / Timing Role: Self-oscillating primary switch regulating output via TL431 + optocoupler feedback.

Use Value: 100 kHz fixed frequency enables small transformer; 0.6 mA COMP pull-up simplifies secondary biasing without extra components.

Industrial Control Auxiliary Supply

White Goods Display Panel PSU

Use Scenario: 12 V/1.5 A auxiliary supply for PLC I/O modules requiring robustness against 300 V_AC transients.

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with overtemperature and short-circuit protection.

Use Value: 620 V V_DS rating withstands surge testing per IEC 61000-4-5; thermal shutdown at 160 °C prevents latch-up during prolonged overload.

Use Scenario: 5 V/500 mA standby supply for refrigerator display and microcontroller, operating continuously at light load.

IC Role / Device Role / Timing Role: Burst-mode primary controller maintaining regulation while minimizing no-load dissipation.

Use Value: Automatic transition to burst mode at <10% load reduces average switching loss-enables <0.4 W consumption meeting ENERGY STAR v8.0.

Equivalent & Alternatives

The following parts are listed as comparable options for similar offline primary switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE3B0565J	Fixed 65 kHz frequency; requires external start-up resistor; no integrated HV current source	Lacks burst-mode standby-needs external circuitry for <0.5 W no-load compliance	Preferred where cost-sensitive BOM allows added components and thermal derating is acceptable
LNK306P	700 V rating; frequency jittering for EMI reduction; lower max output (36 W DIP-8)	Uses primary-sensing topology-no optocoupler needed but tighter output regulation tolerance required	Chosen for simpler feedback design in non-isolated or less-regulated auxiliary rails

Compared with ICE3B0565J and LNK306P, VIPER53EDIP-E uniquely integrates HV start-up, burst-mode control, and 620 V ruggedness in DIP-8-reducing component count and ensuring regulatory compliance without design trade-offs in size or reliability.

Availability

VIPER53EDIP-E is available at Aetrix Electronics and suitable for USB wall adapters, smart home sensor power supplies, industrial control auxiliary supplies, and white goods display panel PSUs requiring stable component supply and long-term manufacturability.

Supply support for VIPER53EDIP-E 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The VIPer™ family targets highly integrated AC-DC conversion-combining controller and MOSFET to reduce bill-of-materials and simplify safety-certified offline power supply design.

FAQ

What is the minimum recommended value for the COMP pin capacitor in VIPER53EDIP-E designs?

A minimum 8 nF ceramic capacitor must be placed directly at the COMP pin per datasheet Section 6 footnote. This stabilizes the internal current source and prevents oscillation in the regulation loop. Using less than 8 nF risks instability, especially under light-load conditions where burst mode engages. The typical value used in reference designs is 10 nF.

Can VIPER53EDIP-E operate with a single 12 V DC input instead of AC mains?

No-VIPER53EDIP-E is designed exclusively for offline AC-DC conversion with high-voltage DRAIN pin operation. Its 620 V V_DS rating and integrated HV start-up current source assume connection to rectified AC input. Applying only 12 V DC to DRAIN will not activate the start-up current source and prevents VDD charging, rendering the device non-operational.

How does the TOVL pin affect overload response time?

The TOVL pin connects a capacitor that introduces an 8 ms delay before overload shutdown activates. With a 100 nF capacitor (standard value), V_COMP must exceed 4.4 V for 8 ms continuously to trigger shutdown-preventing nuisance trips during brief current surges like motor startup or capacitor inrush. Reducing capacitance decreases delay linearly (e.g., 50 nF → 4 ms).

Is the DIP-8 package of VIPER53EDIP-E RoHS-compliant and halogen-free?

Yes-VIPER53EDIP-E conforms to RoHS Directive 2011/65/EU and is halogen-free per STMicroelectronics' material declarations. The DIP-8 body uses flame-retardant epoxy (UL94 V-0 rated), and lead finish is matte tin, fully compatible with lead-free soldering processes up to 260 °C peak temperature.

VIPER53EDIP-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: VIPER™

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Active

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 620V

Topology:: Flyback

Voltage - Start Up:: 11.5 V

Voltage - Supply (Vcc/Vdd):: 8.4V ~ 19V

Duty Cycle:: -

Frequency - Switching:: Up to 300kHz

Power (Watts):: 50 W

Fault Protection:: Current Limiting, Over Load, Over Temperature, Short Circuit

Control Features:: EN, Frequency Control, Soft Start

Operating Temperature:: -40°C ~ 150°C (TC)

Grade:: -

Qualification:: -

Supplier Device Package:: 8-DIP

Mounting Type:: Through Hole

VIPER53EDIP-E FAQ

1.How can I place an order for VIPER53EDIP-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VIPER53EDIP-E 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 VIPER53EDIP-E reliable?

The price and inventory of VIPER53EDIP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER53EDIP-E is usually 5 days.

3.What payment methods are accepted for VIPER53EDIP-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER53EDIP-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VIPER53EDIP-E?

VIPER53EDIP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VIPER53EDIP-E 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 VIPER53EDIP-E?

For technical support, including VIPER53EDIP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER53EDIP-E requirements.

6.How does Aetrix verify that VIPER53EDIP-E is sourced from the original manufacturer or authorized distributors?

All VIPER53EDIP-E 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 VIPER53EDIP-E meets industry standards.

7.What is the process for return or replacement of VIPER53EDIP-E?

All VIPER53EDIP-E units undergo pre-shipment inspection (PSI). If there is an issue with VIPER53EDIP-E, 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 VIPER53EDIP-E part is unused and in its original packaging.

Return procedure for VIPER53EDIP-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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