Overview
The MAX5094 is a CMOS, high performance, current mode PWM controller with all the features required for a wide input voltage range isolated/non-isolated power supply. These controllers are ideal for low power and high power universal power and telecom power supplies.
The MAX5094 includes a fast comparator that typically has a delay of only 60ns from the current-sense to the output for overcurrent protection. The MAX5094 contains an error amplifier that produces an output on the COMP side. Soft start can be achieved by using an external component to control the rise of the COMP voltage.
The frequency of the oscillator can be adjusted by external resistors and capacitors, ranging from 20kHz to 1MHz. The discharge current of the timing capacitor is fine-tuned to set the dead time and maximum duty cycle at a given frequency. The sawtooth output from the RTCT can be used for slope compensation when needed.
characteristic
Pin compatible with UCC28C43 (MAX5094A) and UCC28C45 (MAX5094B) for direct replacement
2A source current and 1A sink current drive capability up to 1MHz switching operating frequency bidirectional frequency synchronization (MAX5095A/MAX5095B)
Leading output drive for secondary side synchronous rectification (MAX5095C)
The 60ns fast cycle-by-cycle current-limit trimmer oscillator capacitor discharge current accurately sets the maximum duty cycle with 0.8V hysteresis and an accuracy of ±5% of the startup voltage
32μA low startup current
5V Regulator Output (REF), 20mA Drive Capability with 0.3V Current-Sense Threshold Version Thermal Shutdown
application
Computer System/Server Industrial Power Conversion Isolated Uninterrupted Working Circuit Isolated Power Module Isolated Telecom Power Network System Universal Input AC/DC Power Supply
Max5094 typical application circuit
See the PDF document for more details!
Auto Transfer Switch,Automatic Transfer Switch,Emergency Transfer Switch,Automatic Changeover Switch
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