Name: /Tools-Info/Vipper27l St 7pin Ic
Brand: EstiSource
Availability: InStock

VIPPER27L ST 7PIN IC

Cost Estimation for this product is under upgradation. For any query or support please email us at 'info@estisource.com'.

VIPPER27L ST 7PIN IC

Introduction
Material Composition
Manufacturing Process
Challenges and Limitations
Costing
Properties and Characteristics
Frequently asked questions
Part Library

Bar Halfshaft
Tripot Housing
Cam Shaft
Chrome Ball
Connecting Rod
Crank Shaft
CVOR
Inlet Valve
Exhaust Valve
Piston
Spider Tripot
Universal Cross
Crank Pulley
Dowel Pin
Pulley Driven
Gudgeon Pin
Nut Retaining
Rack Bearing
Adaptor
Bushing
Guide
Tooth EA Tele
Spacer Ring
Pinion Gear
Transmission Case
Drive Shaft
Brake Caliper
Engine Mount Bracket
Steering Knuckle
Control Arm Assembly
Differential Case
Alternator
Radiator
Throttle Body
Fuel Injector
Axle Shaft
Ball Stud
Stub Axle
Ladder Cable Trays
Solar Strut Channel
Perforated Cable Trays
Bullet Fastener
Floor Trunking Ducts
Gi Full Threaded Rod
C-Channel
Piston Ring
Rotor Shaft
Wheel Cylinder
Board Connector
Signal Connector
Stator Insulator Cover
Stator Core Stack
Terminal Winding Connector
Rotor Stack
Motor housing
Motor Cover
Housing PCB
ECU Cover
Breathing Plug ECU cover
Tie rod
Lock Nut
Control Shaft
Soft Lock
Dust Cover
Dust Cap
Pinion Shaft
Rod end Housing
Steering Gear Housing
Torsion Bar
Rack Shaft
Closure Plug
Outboard Housing
Yoke Bearing, Rack
Ball Screw
Spindle
Precision Lock Nut
Disc Spring
Geometry Mandrills
Lubrication Unit
Level Bottle
Alignment Gauges
Spindle Clamping Gauge
Hydraulic Turret and Their Spares
Rotary Union for Coolant
Linear Blocks and Rails
Ring Gauge
Plug Gauge
MT Taper
Garbid Drill Bit
Chamfering Cutter
T-Slot Cutter
PCB Design
PCB Fabrication
FU6811L
SN74LS175
MT7855BD
FEDRI962L
GDTUBE2PIN 600 V
BGY588C
KF834T-24
KF887B0
ZMCT102W
W06 Bridge
VS-P405W
J2831
HIP4082IPZ
Green Trimmer
BPW34
DS1307
TYN612
L7805CV
WML10N80M3 WAYON
TCSC5200N CDIL
SKM100GB063D SEMIKRON
IRG4PH50K IR MEXICO TO247
IRG4PC40KPBF IR MEXICCO TO247
CM150DU12H MITSUBISHI
GT25Q101TOSHIBA TO47
GBU610 MDD
N79E715AT28 NUVOTON SMD
IRF610PBF VISHAY
KA2281 IC HLF
BY255LGE DIODE
KT400-26D IRON CORE
KS157-125A ALLOY CORE
KS106-125A KDM
MM74C926N IC HLF
ZMCT103C CURRENT TRANSFORMER
FUSE HOLDER
FGL60N100BNTDTU ON
MBRF20100DT OSEN
DK5V100R25C SMD
CD4543 IC HLF
BVH-M-R0005-5.0 ISABELLENHUETTE
ACS770LCB-050U ALIGRO
DC Pump Motor
DH3205A WXDH
10N80 UTC
7N65L-TC TO-220FI UTC
IRFB3306 IR
STP100N6F7 ST
KF834T-6V KEJIAN
SSS6N60A FSC PLASTIC TO220F
IRF7319TRPBF SMD INFINEON
IRFB7437PBF IR
IR2113IR 14PIN IC
IR2156IR 14PIN DIP
IR5C940AC-X4 940NM IR LED
IRF820PBF VISHAY
IRFB7537PBF IR
IRFBE20PBF VISHAY TO220
IRFP064NPBF IR CHINA TO247
IRFP4321PBF IR
IRFZ44NPBF IR TO220
IRS2092PBF IR 16PIN DIP IC
M57962L-01R MITSUBISHI
DSPIC30F2010-30 I-SP MICROCHIP 28PIN DIP
PIC18F252-I-SP MICROCHIP
PIC16F882-I-SP MICROCHIP 28PIN DIP
SN74HC153 HLF
74HC138N HG
U74HC32L DIP-14 UTC
BTA41-800B JSDG
SN74HC244 IC HLF
HER208 MDD
MBR20100WXDH
HFA30PA60CPBF VISHAY TO247
S40D60C MOSPEC TO3P
U30D60C MOSPEC TO3P
MUR3040 WXDH DIODE
MBR20200CT MOSPEC TO220
MUR1560G ON CHINA TO220
DPA422PN PI 8PIN DIP
LNK501PN PI 7PIN DIP
PI TOP244YN
TOP210P PI 8PIN DIP
TOP234YN PI TO220
TOP254EN PI TO263-6L
VIPPER12A ST CHINA 8PIN DIP
VIPPER27L ST 7PIN IC
MT7939 IC
MC145151P2MOTOROLA 28PIN
UM66T
DH066N06 WXDH
NJW0281 ISC CKT
IRFB7430PBF IR

One Click Product Costing

Choose File Upload Image/Print

Image must be less than 200KB.

Processing your request...

VIPER27L – STMicroelectronics High-Voltage Converter

is a monolithic high-voltage converter IC from STMicroelectronics, integrating a PWM controller and a power MOSFET in a single 7-pin through-hole package. Specifically designed for low to medium power offline switch-mode power supplies (SMPS), it is widely used in chargers, adapters, industrial control boards, and lighting power systems.

Operating on input voltages up to 800V and delivering efficient flyback conversion, the VIPER27L supports quasi-resonant operation and is capable of delivering up to 15W in wide-range applications with minimal external components. It features protection mechanisms like over-temperature shutdown, overload protection, and soft-start functionality, making it a reliable and compact power conversion solution.

How EstiSource Helps

EstiSource supports design and sourcing teams by streamlining the acquisition of critical components like the VIPER27L. From real-time cost insights and alternate part recommendations to trusted supplier links and availability alerts, our platform ensures engineers and buyers reduce procurement time and cost, especially when dealing with high-voltage converter ICs.

Why Choose EstiSource for Sourcing

EstiSource goes beyond passive catalogs. We actively help you navigate sourcing, availability, and real-time cost fluctuations for critical ICs like VIPER27L. With verified distributor connections, BOM estimation tools, and RFQ automation, we bring procurement, engineering, and finance teams onto a unified cost visibility platform.

1. Material Composition

▶

The VIPER27L consists of:

Silicon Die: Contains the control logic, power MOSFET, and protection circuitry, fabricated using BCD (Bipolar-CMOS-DMOS) technology.
Copper Leadframe: Connects the internal silicon to the outer 7-pin DIP package, aiding both signal routing and thermal conduction.
Molding Compound: Epoxy-based, offering environmental protection, mechanical rigidity, and dielectric insulation.
Bond Wires: Aluminum or gold fine wires connecting die pads to leadframe terminals.
Tin-Plated Leads: Ensures corrosion resistance and solderability.
Plastic Package Body: Thermoplastic body with good thermal insulation properties and mechanical robustness.

2. Manufacturing Process

▶

BCD Process Fabrication: Combines bipolar, CMOS, and DMOS technologies to allow integration of analog control and high-voltage power stages.
Wafer Dicing & Die Attachment: Silicon dies are cut from the wafer and mounted onto leadframes.
Wire Bonding: Die connections to external leads are made using ultrasonic bonding.
Encapsulation: The IC is encapsulated in epoxy using transfer molding.
Lead Forming & Plating: External pins are trimmed, formed to DIP shape, and tin-plated.
Final Testing: Electrical performance, thermal resistance, and package quality are tested before dispatch.

3. Challenges & Limitations

▶

Thermal Dissipation in Compact Designs

The internal MOSFET and control logic generate heat; improper PCB layout can lead to thermal stress.

Startup Circuit Sensitivity

In certain designs, the startup capacitor sizing and current requirements can affect soft-start behavior.

Limited Power Output

Typically supports up to 15W; not suitable for high-power SMPS systems.

Discontinued Risk for Legacy Designs

Changes in manufacturing processes or packaging availability may pose obsolescence risks for long-term design-in.

EMI Compliance Needs

Designers must ensure proper filtering and shielding in high-noise environments.

4. Costing

▶

Typical Unit Cost:
- ₹35 to ₹60 per piece for 1k–10k quantities (B2B pricing)
- ₹70–₹90 for small lots or e-commerce suppliers
Bulk Purchase Benefits:
- Volume pricing leads to up to 40% cost reduction per unit
- Regional distributors offer better rates than global aggregators
Indirect Costs:
- EMI filter components
- PCB area dedicated to isolation
- Heat-sinking or copper area layout for thermal transfer
Lead Time Variability: ~4 to 6 weeks from global suppliers; faster in local markets with limited availability.

5. Properties & Characteristics

▶

Package

7-pin DIP (through-hole)

Input Voltage Range

Up to 800V (startup from high voltage)

Switching Frequency

Quasi-resonant operation (variable frequency)

Power Output

Up to 15W (flyback topology)

Integrated Power Stage

800V MOSFET

Protections

Thermal shutdown, overload, soft-start, brown-out

Applications

Chargers, LED drivers, industrial SMPS, auxiliary power modules

Ambient Temp Range

-40°C to +150°C

6. Frequently Asked Questions

▶

Q1: What is the maximum output power VIPER27L can handle?

It typically supports up to 15W for wide-range inputs and slightly more for 85–265 VAC ranges with proper heat management.

Q2: Is VIPER27L suitable for compact charger designs?

Yes. Its monolithic integration reduces component count, making it ideal for space-constrained applications.

Q3: Does it support constant current output?

It supports primary-side regulation with external feedback, which can enable constant current behavior in LED or battery charger applications.

Q4: How is it different from VIPER16 or VIPER37?

VIPER27L offers higher voltage ratings and better thermal handling compared to VIPER16, but with less power output than VIPER37.

Q5: Are SMD versions available?

No. VIPER27L is only available in 7-pin through-hole DIP. However, other variants in the VIPER series do support SMD formats.

Precision in every estimate, excellence in Service.