Linear LT8582故障保护双路PWM DC电源解决方案
The LT8582 is a dual independent channel PWM DC/DC converter with a power good pin and built-in fault protection to help guard against input overvoltage and overtemperature conditions. Each channel consists of a 42V master switch and a 42V slave switch that can be tied together for a total current limit of 3A.
The LT8582 is ideal for many local power supply designs. Each channel can be easily configured in boost, SEPIC, inverting, or flyback configurations. Together, the two channels can produce a 12V and a –12V output with 14.4W of combined output power from a 5V input. In addition, the LT8582’s slave switch allows the part to be configured in high voltage, high power charge pump topologies that are more efficient and require fewer components than traditional circuits.
The LT8582 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function. Additional features such as output short protection, frequency foldback and soft-start are integrated. The LT8582 is available in a 24-pin 7mmx 4mm DFN package.
Dual 42V, 3A Combined Power Switch
Master/Slave (1.7A/1.3A) Switch Design
Wide Input Range: 2.5V to 22V Operating, 40V Maximum Transient
Power Good Pin for Event Based Sequencing
Switching Frequency Up to 2.5MHz
Each Channel Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter
Low VCESAT Switch: 270mV at 2.75A (Typical)
Can be Synchronized to an External Clock
Output Short-Circuit Protection
High Gain SHDN Pin Accepts Slowly Varying Input Signals
24-Pin 7mmx 4mm DFN Package
Local Power Supply
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