profil-zyak-2012

Publications

Sealed Lead Acid Battery Charger FEATURES Optimum Control for Maximum - Texas Instruments, Incorporated [Slus186, B]

Sealed Lead Acid Battery Charger FEATURES Optimum Control for Maximum

Texas Instruments, Incorporated [Slus186, B]

Dual Output Driver FEATURES Dual 5A Totem Pole Outputs - Line Package

Dual Output Driver FEATURES Dual 5A Totem Pole Outputs

The MC34261 MC33261 are active power factor controllers specifically designed for use as a preconverter in electronic ballast and in off–line power converter applications These integrated circuits feature an internal startup timer a one quadrant multiplier for near unity power factor zero current detector to ensure critical conduction operation high gain error amplifier trimmed internal bandgap reference current sensing comparator and a totem pole output ideally suited for driving a power MOSFET - Amanda

The MC34261 MC33261 are active power factor controllers specifically designed for use as a preconverter in electronic ballast and in off–line power converter applications These integrated circuits feature an internal startup timer a one quadrant multiplier for near unity power factor zero current detector to ensure critical conduction operation high gain error amplifier trimmed internal bandgap reference current sensing comparator and a totem pole output ideally suited for driving a power MOSFET

General Description The MAX4373 MAX4374 MAX4375 low cost micropow er high side current sense supervisors contain a high side current sense amplifier bandgap reference and comparator with latching output They feature a voltage output that eliminates the need for gain setting resistors making them ideal for today s notebook computers cell phones and other systems where battery DC current monitoring is critical High side current monitoring is especially useful in battery powered systems since it does not interfere with the ground path of the battery charger The to +28V input common mode range is independent of the supply voltage which ensures that the current sense feedback remains viable even when connected to a battery pack in deep discharge The comparator output of the MAX4373 MAX4374 MAX4375 is latched to provide a turn off flag that doesn t oscillate In addition the MAX4374 MAX4375 contain a second comparator for use in window detec tion functions The MAX4373 MAX4374 MAX4375 are available in three different gain versions T +20V V F +50V V H +100V V and use an external sense resistor to set the sensitivity of the input voltage to the load current These features offer a high level of inte gration resulting in a simple and compact current sense solution The MAX4373 MAX4374 MAX4375 operate from a sin gle 7V to +28V supply and consume A They are specified for the extended operating temperature range 40°C to +85°C and are available in pin and pin MAX packages - Maria

General Description The MAX4373 MAX4374 MAX4375 low cost micropow er high side current sense supervisors contain a high side current sense amplifier bandgap reference and comparator with latching output They feature a voltage output that eliminates the need for gain setting resistors making them ideal for today's notebook computers cell phones and other systems where battery DC current monitoring is critical High side current monitoring is especially useful in battery powered systems since it does not interfere with the ground path of the battery charger The to +28V input common mode range is independent of the supply voltage which ensures that the current sense feedback remains viable even when connected to a battery pack in deep discharge The comparator output of the MAX4373 MAX4374 MAX4375 is latched to provide a turn off flag that doesn't oscillate In addition the MAX4374 MAX4375 contain a second comparator for use in window detec tion functions The MAX4373 MAX4374 MAX4375 are available in three different gain versions T +20V V F +50V V H +100V V and use an external sense resistor to set the sensitivity of the input voltage to the load current These features offer a high level of inte gration resulting in a simple and compact current sense solution The MAX4373 MAX4374 MAX4375 operate from a sin gle 7V to +28V supply and consume A They are specified for the extended operating temperature range 40°C to +85°C and are available in pin and pin MAX packages

Semiconductor Components Industries LLC July Rev - Jesse

Semiconductor Components Industries LLC July Rev

1LT1246 LT1247 1MHz Off Line - Line Converters

1LT1246 LT1247 1MHz Off Line

Line Converters

OVERVIEW Several manufacturers have for some years been - Ward_Rg

OVERVIEW Several manufacturers have for some years been

APT website http: www advancedpower com -

APT website http: www advancedpower com

74AC374 OCTAL D TYPE FLIP FLOP - Sgs-Thomson Microelectronics

74AC374 OCTAL D TYPE FLIP FLOP

Sgs-Thomson Microelectronics

MBR735 MBR760 Rev C Fairchild Semiconductor Corporation -

MBR735 MBR760 Rev C Fairchild Semiconductor Corporation

9ul B UNITRODE APPLICATION NOTE - Constant Average

9ul B UNITRODE APPLICATION NOTE

Constant Average

Multicell Battery Stack Monitor - Daisy - Chainable Serial

Multicell Battery Stack Monitor

Daisy - Chainable Serial

UCC1800 UCC2800 UCC3800 - Texas Instruments, Incorporated [Slus270, C][M]

UCC1800 UCC2800 UCC3800

Texas Instruments, Incorporated [Slus270, C][M]

Document Number: Jan - Power Ics

Document Number: Jan

1International Rectifier Kansas Street El Segundo CA USA - Adams Jonathan

1International Rectifier Kansas Street El Segundo CA USA

HPH D48 Series Isolated VOUT 30A Half Brick DC DC Converters - Jparks

HPH D48 Series Isolated VOUT 30A Half Brick DC DC Converters

APT website http: www advancedpower com - Pdoumergue

APT website http: www advancedpower com

REGULATING PULSE WIDTH MODULATORS TO V OPERATION V REFERENCE TRIMMED TO Hz TO KHz OSCILLATOR RANGE SEPARATE OSCILLATORSYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL SOFT START PULSE BY PULSESHUTDOWN INPUT UNDERVOLTAGE LOCKOUT WITH - Stmicroelectronics

REGULATING PULSE WIDTH MODULATORS TO V OPERATION V REFERENCE TRIMMED TO Hz TO KHz OSCILLATOR RANGE SEPARATE OSCILLATORSYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL SOFT START PULSE BY PULSESHUTDOWN INPUT UNDERVOLTAGE LOCKOUT WITH

Stmicroelectronics

n OUTPUT CURRENT UP TO A n OUTPUT VOLTAGESOF - Stmicroelectronics

N OUTPUT CURRENT UP TO A n OUTPUT VOLTAGESOF

Stmicroelectronics

NOTE: For detailed information on purchasing options contact your local Allegro field applications engineer or sales representative -

NOTE: For detailed information on purchasing options contact your local Allegro field applications engineer or sales representative

BATTERY MANAGEMENT Nov -

BATTERY MANAGEMENT Nov

Power MOSFET IGBT Gate Drive Optocouplers - Lud S Powermac

Power MOSFET IGBT Gate Drive Optocouplers

INTRODUCTION An induction motor can run only at its rated speed when it is connected directly to the main supply However many applications need variable speed operations This is felt the most in applications where input power is directly proportional to the cube of motor speed In applications like the induction motor based centrifugal pump a speed reduction of results in an energy savings of approximately Driving and controlling the induction motor efficiently are prime concerns in today s energy conscious world With the advancement in the semiconductor fabrication technology both the size and the price of semiconduc tors have gone down drastically This means that the motor user can replace an energy inefficient mechani cal motor drive and control system with a Variable Frequency Drive VFD The VFD not only controls the motor speed but can improve the motor s dynamic and steady state characteristics as well In addition the VFD can reduce the system s average energy consumption Although various induction motor control techniques are in practice today the most popular control tech nique is by generating variable frequency supply which has constant voltage to frequency ratio This technique is popularly known as VF control Generally used for open loop systems VF control caters to a large num ber of applications where the basic need is to vary the motor speed and control the motor efficiently It is also simple to implement and cost effective The PIC16F7X7 series of microcontrollers have three on chip hardware PWM modules making them suitable for phase motor control applications This application note explains how these microcontrollers - Microchip Technology

INTRODUCTION An induction motor can run only at its rated speed when it is connected directly to the main supply However many applications need variable speed operations This is felt the most in applications where input power is directly proportional to the cube of motor speed In applications like the induction motor based centrifugal pump a speed reduction of results in an energy savings of approximately Driving and controlling the induction motor efficiently are prime concerns in today's energy conscious world With the advancement in the semiconductor fabrication technology both the size and the price of semiconduc tors have gone down drastically This means that the motor user can replace an energy inefficient mechani cal motor drive and control system with a Variable Frequency Drive VFD The VFD not only controls the motor speed but can improve the motor's dynamic and steady state characteristics as well In addition the VFD can reduce the system's average energy consumption Although various induction motor control techniques are in practice today the most popular control tech nique is by generating variable frequency supply which has constant voltage to frequency ratio This technique is popularly known as VF control Generally used for open loop systems VF control caters to a large num ber of applications where the basic need is to vary the motor speed and control the motor efficiently It is also simple to implement and cost effective The PIC16F7X7 series of microcontrollers have three on chip hardware PWM modules making them suitable for phase motor control applications This application note explains how these microcontrollers

Microchip Technology

General Description The MAX6668 MAX6670 remote junction thermal switches with an internal power transistor drive a cool ing fan rated for supply voltages up to +12V and 250mA These devices measure the temperature of an external P N junction typically a diode connected tran sistor and turn on the fan power switch when the remote temperature rises above a factory programmed threshold Self contained and requiring no software development the MAX6668 MAX6670 are simple “drop in” fan control solutions for a variety of systems The MAX6670 features an open drain WARN output that goes active when the remote temperature exceeds the factory programmed fan activation threshold by +15°C The MAX6670 features an open drain OT output that goes active when the remote temperature exceeds the factory programmed threshold by +30°C The MAX6668 MAX6670 provide a fan control input FORCEON that allows the fan to be driven externally regardless of temperature Available temperature thresholds range from +40°C to +75°C in 5°C increments Hysteresis is preset to 8°C on the MAX6668 or pin selectable to 4°C 8°C or 12°C using a three level logic input on the MAX6670 Temperature threshold accuracy is ±1°C typ and 2°C max for remote junction temperatures from +40°C to +75°C The MAX6668 MAX6670 operate from a +3V to 6V power supply and are specified over the automotive temperature range 40°C to +125°C The MAX6668 is offered in an pin MAX package and the MAX6670 is available in a space saving pin MAX package - Fe Campillo

General Description The MAX6668 MAX6670 remote junction thermal switches with an internal power transistor drive a cool ing fan rated for supply voltages up to +12V and 250mA These devices measure the temperature of an external P N junction typically a diode connected tran sistor and turn on the fan power switch when the remote temperature rises above a factory programmed threshold Self contained and requiring no software development the MAX6668 MAX6670 are simple “drop in” fan control solutions for a variety of systems The MAX6670 features an open drain WARN output that goes active when the remote temperature exceeds the factory programmed fan activation threshold by +15°C The MAX6670 features an open drain OT output that goes active when the remote temperature exceeds the factory programmed threshold by +30°C The MAX6668 MAX6670 provide a fan control input FORCEON that allows the fan to be driven externally regardless of temperature Available temperature thresholds range from +40°C to +75°C in 5°C increments Hysteresis is preset to 8°C on the MAX6668 or pin selectable to 4°C 8°C or 12°C using a three level logic input on the MAX6670 Temperature threshold accuracy is ±1°C typ and 2°C max for remote junction temperatures from +40°C to +75°C The MAX6668 MAX6670 operate from a +3V to 6V power supply and are specified over the automotive temperature range 40°C to +125°C The MAX6668 is offered in an pin MAX package and the MAX6670 is available in a space saving pin MAX package

APT website http: www advancedpower com - Pdoumergue

APT website http: www advancedpower com

General Description The MAX220–MAX249 family of line drivers receivers is intended for all EIA TIA 232E and V V communica tions interfaces particularly applications where ±12V is not available These parts are especially useful in battery powered sys tems since their low power shutdown mode reduces power dissipation to less than W The MAX225 MAX233 MAX235 and MAX245 MAX246 MAX247 use no external components and are recommended for appli cations where printed circuit board space is critical - Line Detection

General Description The MAX220–MAX249 family of line drivers receivers is intended for all EIA TIA 232E and V V communica tions interfaces particularly applications where ±12V is not available These parts are especially useful in battery powered sys tems since their low power shutdown mode reduces power dissipation to less than W The MAX225 MAX233 MAX235 and MAX245 MAX246 MAX247 use no external components and are recommended for appli cations where printed circuit board space is critical

February page of - Sa_1776

February page of

NEGATIVE VOLTAGE REGULATORS - Stmicroelectronics

NEGATIVE VOLTAGE REGULATORS

Stmicroelectronics

OVERVIEW The SA828 SA838 Pulse Width Modulation ICs - Ward_Rg

OVERVIEW The SA828 SA838 Pulse Width Modulation ICs

HEXFET® Power MOSFET - Apatel3

HEXFET® Power MOSFET

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