Wide-supply PWM controller for multi-topology SMPS
The Texas Instruments TL594CNG4 is a fixed-frequency PWM controller designed for a broad range of switched-mode power supplies. It operates from a 7 V to 40 V supply rail and switches from 1 kHz to 300 kHz, covering applications from line-frequency converters to compact magnetics designs. The controller supports buck, boost, flyback, forward converter, half-bridge, full-bridge, and push-pull topologies, making it a single-component solution for many SMPS architectures.
97 % duty cycle and dual outputs
A maximum duty cycle of 97 % allows near-continuous on-time, which is critical for boost and flyback designs that need high step-up ratios. The two transistor-driver outputs can be paralleled for higher current or configured for push-pull and bridge topologies. Control features include dead-time control and frequency control, giving the designer fine adjustment of the output waveform and switching losses.
Through-hole package and commercial temperature grade
Housed in a 16-pin PDIP (0.300-inch, 7.62 mm pitch), the TL594CNG4 is a through-hole part suited for prototyping, low-volume production, and designs where hand-assembly or rework is expected.