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Description : 400W TRANSIENT VOLTAGE SUPPRESSORS

Features
● Glass Passivated Die Construction
● 400W Peak Pulse Power Dissipation
● 6.8V – 440V Standoff Voltage
● Uni- and Bi-Directional Versions Available
● Excellent Clamping Capability
● Fast Response Time
● Plastic Case Material has UL Flammability
   Classification Rating 94V-O

Part Name(s) : TEA1753T
NXP
NXP Semiconductors.
Description : HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller

General description
The TEA1753T is the third generation of green Switched Mode Power Supply (SMPS) controller ICs. The TEA1753T combines a controller for Power Factor Correction (PFC) and a flyback controller. Its high level of integration allows the design of a cost-effective power supply with a very low number of external components.
The special built-in green functions provide high efficiency at all power levels. This efficiency applies to quasi-resonant operation at high-power levels, quasi-resonant operation with valley skipping, as well as reduced frequency operation at lower power levels. At low-power levels, the PFC switches off to maintain high efficiency.
During low-power conditions, the flyback controller switches to frequency reduction mode and limits the peak current to an adjustable minimum value. This mode ensures high efficiency at low-power and good standby power performance while minimizing audible noise from the transformer.
The controller is switched to the power-down mode for no-load operation. In this mode, the controller is shut down for very low standby power applications.
The TEA1753T is a Multi-Chip Module, (MCM), containing two chips. The proprietary high-voltage BCD800 process which makes direct start-up possible from the rectified universal mains voltage in an effective and green way. The second low voltage Silicon On Insulator (SOI) is used for accurate, high-speed protection functions and control.
The TEA1753T enables the design of highly efficient and reliable supplies with power requirements of up to 250 W using the minimum number of external components.
Remark: All values provided throughout this data sheet are typical values unless otherwise stated.

Features and benefits
Distinctive features
   ■ Integrated PFC and flyback controller
   ■ Universal mains supply operation (70 V (AC) to 276 V (AC))
   ■ Dual-boost PFC with accurate maximum output voltage (NXP patented)
   ■ High level of integration, resulting in a very low external component count and a cost-effective design
   ■ Adjustable PFC switch off delay
  
Green features
   ■ On-chip start-up current source
   ■ Power down functionality for very low standby power
  
PFC green features
   ■ Valley/Zero Voltage Switching (ZVS) for minimum switching losses (NXP patented)
   ■ Frequency limitation to reduce switching losses
   ■ PFC is switched off when a low load is detected at the flyback output

flyback green features
   ■ Valley switching for minimum switching losses (NXP patented)
   ■ Frequency reduction with adjustable minimum peak current at low-power operation to
      maintain high efficiency at low output power levels
  
Protection features
   ■ Safe restart mode for system fault conditions
   ■ Continuous mode protection with demagnetization detection for both converters (NXP patented)
   ■ UnderVoltage Protection (UVP) (foldback during overload)
   ■ Accurate OverVoltage Protection (OVP) for both converters (adjustable for flyback converter)
   ■ Mains voltage independent OverPower Protection (OPP)
   ■ Open control loop protection for both converters. The open-loop protection on the flyback converter is safe restart
   ■ OverTemperature Protection (OTP)
   ■ Low and adjustable OverCurrent Protection (OCP) trip level for both converters
   ■ General-purpose latched protection input for system OverTemperature Protection (OTP) for example
  
Applications
   ■ The device is used in all applications requiring an efficient and cost-effective power
   supply solutions up to 250 W. Notebook adapters in particular benefit from the high
   level of integration

Part Name(s) : STV9325
ST-Microelectronics
STMicroelectronics
Description : Vertical Deflection Booster for 2.5-APP TV/Monitor Applications with 70-V flyback Generator

Description
The STV9325 is a vertical deflection booster designed for TV and monitor applications. This device, supplied with up to 35 V, provides up to 2.5 App output current to drive the vertical deflection yoke. The internal flyback generator delivers flyback voltages up to 75 V. In double-supply applications, a stand-by state will be reached by stopping the (+) supply alone.

Main Features
■Power Amplifier
flyback Generator
■Stand-by Control
■Output Current up to 2.5 App
■Thermal Protection

Part Name(s) : STV9302
ST-Microelectronics
STMicroelectronics
Description : VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH flyback GENERATOR

DESCRIPTION
The STV9302 is a vertical deflection booster designed for monitor and TV applications. This device, supplied with up to 32 V, provides up to 2 App output current to drive the vertical deflection yoke.
The internal flyback generator delivers flyback voltages up to 60 V.

FEATURES
• Power Amplifier
flyback Generator
• Output Current up to 2 App
• Thermal Protection

Description : OFFLINE flyback CONVERTERS DESIGN METHODOLOGY WITH THE L6590 FAMILY

flyback BASICS
flyback operation will be illustrated with reference to the basic circuit and the waveforms of fig. 1. It is a two step process. During the ON-time of the switch, energy is taken from the input and stored in the primary winding of the flyback transformer (actually, two coupled inductors). At the secondary side, the catch diode is reverse biased, thus the load is being supplied by the energy stored in the output bulk capacitor.

 

Linear
Linear Technology
Description : Isolated flyback Switching Regulator

DESCRIPTION
The LT ®1425 is a monolithic high power switching regulator specifically designed for the isolated flyback topology. No “third winding” or optoisolator is required; the integrated circuit senses the isolated output voltage directly from the primary side flyback waveform. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry.

FEATURES
■ No transformer “Third Winding” or Optoisolator Required
■ ±5% Accurate Output Voltage Without User Trims (See Circuit Below)
■ Resistor Programmable Output Voltage
■ Regulation Maintained Well Into Discontinuous Mode (Light Load)
■ Optional Load Compensation
■ Operating Frequency: 285kHz
■ Easily Synchronized to External Clock
■ Available in 16-Pin Narrow SO Package

APPLICATIOUNS
■ Isolated flyback Switching Regulators
■ Ethernet Isolated 5V to –9V Converters
■ Medical Instruments
■ Isolated Telecom Supplies

Description : High Power Isolated flyback Controller

DESCRIPTION
The LT®1737 is a monolithic switching regulator controller specifically designed for the isolated flyback topology. It drives the gate of an external MOSFET and is generally powered from a DC supply voltage. Output voltage feedback information may be supplied by a variety of methods including a third transformer winding, the primary winding or even direct DC feedback (see Applications Information). Its gate drive capability, coupled with a suitable external MOSFET and other power path components, can deliver load power up to tens of Watts.

FEATURES
■ Drives External Power MOSFET
■ Supply Voltage Range: 4.5V to 20V
flyback Voltage Limited Only by External Components
■ Senses Output Voltage Directly from Primary Side Winding—No Optoisolator Required
■ Switching Frequency from 50kHz to 250kHz with External Capacitor
■ Moderate Accuracy Regulation Without User Trims
■ Regulation Maintained Well into Discontinuous Mode
■ External ISENSE Resistor
■ Optional Load Compensation
■ Optional Undervoltage Lockout
■ Shutdown Feature Reduces IQ to 50µA Typ
■ Available in 16-Pin GN and SO Packages

APPLICATIONS
■ Isolated flyback Switching Regulators
■ Medical Instruments
■ Instrumentation Power Supplies

Part Name(s) : STV9302A
ST-Microelectronics
STMicroelectronics
Description : Vertical Deflection Booster for 2-App TV/Monitor Applications with 70-V flyback Generator

The STV9302A is a vertical deflection booster designed for TV and monitor applications.

This device, supplied with up to 35 V, provides up to 2 App output current to drive the vertical deflection yoke.

The internal flyback generator delivers flyback voltages up to 70 V. in double-supply applications, a stand-by state will be reached by stopping the (+) supply alone.

Part Name(s) : STV9326
ST-Microelectronics
STMicroelectronics
Description : Vertical Deflection Booster for 3-APPTV/Monitor Applications with 60-V flyback Generator

Description
The STV9326 is a vertical deflection booster designed for TV and monitor applications.
This device, supplied with up to 30 V, provides up to 3 App output current to drive the vertical deflection yoke.
The internal flyback generator delivers flyback voltages up to 65 V.
In double-supply applications, a stand-by state will be reached by stopping the (+) supply alone.

Main Features
■Power Amplifier
flyback Generator
■Stand-by Control
■Output Current up to 3 App
■Thermal Protection

Part Name(s) : NTE7115
NTE-Electronic
NTE Electronics
Description : Integrated Circuit Color TV Horizontal Combination Circuit

Description:
The NTE71115 is a monolithic integrated circuit in a 18–Lead DIP type package designed for use in color television receivers.

Features:
● Positive Video Input: Capacitively Coupled (Source Impedance < 200Ω)
● Adaptive Sync Separator: Slicing Level at 50% of Sync Amplitude
● Internal Vertical Pulse Separator w/Double Slope Integrator
● Output Stage for Vertical Sync Pulse or Composite Sync Depending on the Load; Both are Switched OFF at Muting
● φ1 Phase Control Between Horizontal Sync and Oscillator
● Coincidence Detector φ3 for Automatic Time Constant Switching; Overruled by the VCR Switch
● Time Constant Switch Between Two External Time Constants for Loop Gain; Both Controlled by the Coincidence Detector φ3
● φ1 Gating Pulse Controlled by Coincidence Detector φ3
● Mute Circuit Depending on TV Transmitter Identification
● φ2 Phase Control Between Line flyback and Oscillator; the Slicing Levels for φ2 Control and Horizontal Blanking can be set Separately
● Burst Keying and Horizontal Blanking Pulse Generation, in Combination with Clamping of the Vertical Blanking Pulse (Three–Level Sandcastle)
● Horizontal Drive Output with Constant Duty Cycle Inhibited by the Protection Circuit or the Supply Voltage Sensor
● Detector for Too Low Supply Voltage
● Protection Circuit for Switching Off the Horizontal Drive Output Continuously if the Input Voltage is Below 4V or Higher than 8V
● Line flyback Control Causing the Horizontal Blanking Level at the Sandcastle Output Continuously in Case of a Missing flyback Pulse
● Spot Suppressor Controlled by the Line flyback Control

Applications:
● Television Receivers
● Video Receivers

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