TL594 - PRECISION SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

The TL594 is a fixed

frequency pulse width modulation control circuit, incorporating the primary building blocks required for the control of a switching power supply.

linear sawtooth oscillator is frequency programmable by two external components,

• he output pulse width from the maximum percent on.
• time, established by the deadtime control input, down to zero, as the voltage at the feedback pin varies from 0.5 V to 3.5 V. Both error amplifiers have a common.
• mode input range from.
• 0.3 V to (VCC.
• 2 V), and may be used to sense power.
• supply output voltage and current. The error.
• amplifier outputs are active high and are ORed together at the noninverting input of the pulse.
• width modulator.