HCF4053 DATASHEET PDF

OVER 15V p. When a logic "1" is present at the inhibit input terminal all channel are off. This device is a triple 2-channel multiplexer having three separate digital control inputs, A, B, and C, and an inhibit input. Each control input selects one of a pair of channels which are connected in a single pole double-throw configuration.

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Devices with higher turnon or turnoff hysteresis are ideal choices for off-line power supplies, while the devices with a narrower hysteresis range are suited for DC-DC applications.

PDF , 3. Extract from the document. PDF , Kb , File published: Sep 5, The fundamental challenge of power supply design is to realize simultaneously two conflicting objectives: good electrical performance and low cost. These inexpensive IC controllers provide all the performance advantages of current-mode operation. In addition the UC series is optimized for efficient power-sequencing of. PDF , Kb , File published: Mar 4, A switching power supply consists of the power stage and the control circuit.

The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the buck power stage only and does not cover control circuits. Detailed steady-state and small-signal analysis of the buck power stage operating in continuous. Simplified equations are used to develop obtainable ranges for parameters over IC tolerances.

Providing the necessary features to control current-mode switched-mode power supplies this device has been improved for higher frequency off-line power supplies. This design note describes a circuit with low startup current less than 0. Since these devices have traditionally used relatively high-voltage 35V bipolar processes powering was not a concern.

In addition many of these ICs contained high-current protection zeners to keep higher voltages from damaging the devices. With a numb. This report addresses the boost power stage only and does not cover control circuits. The report includes detailed steady-stage and small-signal analysis of the boost power stage o.

It covers practical circuit design considerations such as slope compensation gate drive circuitry external control functions synchronization and paralleling current-mode controlled modules. Circuit diagrams and simplified equations are included. PDF , 42 Kb , File published: Sep 5, The UCC offers numerous advantages that allow the power supply design engineer to meet requirements for lower power for battery-operated equipment higher switching frequencies for reduced magnetics size higher levels of circuit integration for improved reliability and lower cost.

PDF , 61 Kb , File published: Mar 23, The switch-mode power supply primary current is often sensed using a power resistor. Using an op amp to amplify the current-sense signal can reduce cost and improve noise performance and efficiency. This report reviews the advantages of using an op amp circuit and analyzes the design criteria needed to choose the proper op amp. Related publications. Privacy Policy Change Privacy Settings. Texas Instruments. AliExpress Worldwide.

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Devices with higher turnon or turnoff hysteresis are ideal choices for off-line power supplies, while the devices with a narrower hysteresis range are suited for DC-DC applications. PDF , 3. Extract from the document. PDF , Kb , File published: Sep 5, The fundamental challenge of power supply design is to realize simultaneously two conflicting objectives: good electrical performance and low cost.

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