General description The Supertex LR7 is a high input voltage switching power supply start-up circuit. The LR7 is ideal for use with industry standard voltage PWM ICs with a 13.9V to 18.8V start-up threshold. This enables the PWM IC to operate from or correct 120V to 240V AC lines and eliminates the power resistors often used for this purpose. The LR7 internal circuit al...
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Description The LT®1508 is a general-purpose off-line complete solution for switching power supplies using active power factor correction. The PFC part is the same, the LT1248's PFC de-en/sync controller, removed because the pin PFC and PWM are synchronized internally. The voltage mode PWM section (LT1509 is the current mode copy) contains all the primary side functio...
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DESCRIPTION Fairchild's Power Switch (FPS) product family is specifically designed for off-line switching power supplies with minimal external components. Fairchild's power switch (FPS) consists of a high voltage value SenseFET and a current mode PWM controller IC. The control IC employs trimmed oscillators, low voltage lockout, leading edge blanking, optim...
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Description The KA34063A is a monolithic regulator subsystem for use with a DC-to-DC converter. This device contains a temperature compensated bandgap reference, duty cycle controlled oscillator, driver and high current output switch. It can be used for step down, boost or invert as well as through switching regulator series regulators. ... Features • Operates from 3.0 to 40V input ...
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Description The KA3524 Regulated PWM contains all the necessary control circuits to implement switching polarity regulators, transformer-coupled DC-DC converters, transformer-polarity and voltage converter multipliers, and other power control applications. This device includes a 5V regulator capable of supplying up to 50mA of external circuitry, control amplifiers, an oscillator, a ...
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DESCRIPTION Fairchild's Power Switch (FPS) product family is specifically designed for off-line switching power supplies with minimal external components. Fairchild's power switch (FPS) consists of a high voltage value SenseFET and a current mode PWM controller IC. The controller IC features trimmed oscillator, undervoltage lockout, leading edge blanking, o...
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DESCRIPTION Fairchild's Power Switch (FPS) product family is specifically designed for off-line switching power supplies with minimal external components. Fairchild's power switches (FPS) include high supply voltage and current value SenseFET mode PWM ICs. Includes PWM controller with integrated fixed oscillator, undervoltage lockout, leading edge blanking...
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DESCRIPTION Fairchild's Power Switch (FPS) product family is specifically designed for off-line switching power supplies with minimal external components. Fairchild's power switches (FPS) include high supply voltage and current value SenseFET mode PWM ICs. Includes PWM controller with integrated fixed oscillator, undervoltage lockout, leading edge blanking...
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DESCRIPTION Fairchild's Power Switch (FPS) product family is specifically designed for off-line switching power supplies with minimal external components. Fairchild's power switches (FPS) include high supply voltage and current value SenseFET mode PWM ICs. Includes PWM controller with integrated fixed oscillator, undervoltage lockout, leading edge blanking...
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General description The HV9100 is a BiCMOS series/DMOS single-output, PWM chip designed for high-speed high-efficiency switch-mode power supplies through HV9103 by Supertex. They provide all the necessary functionality to implement single-switch current-mode PWM, in any topology, with an external minimum section. Utilizing Supertex's proprietary BiCMOS/DMOS te...
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Functional Description The ICE1QS01 is free-running optimized control with no flyback converter for power factor correction (with PFC charge pump). Its switching frequency is reduced in small steps, reducing standby mode to a minimum load of 20 kHz. This function is powered by a digital circuit to avoid periodic pulses also with any jitter. To provide extremely low power consumption...
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