Rainbow-electronics MAX5069 Manuel d'utilisateur

General DescriptionThe MAX5069 is a high-frequency, current-mode,pulse-width modulation (PWM) controller (with dualMOSFET drivers) that integrates all

MAX5069Undervoltage LockoutThe MAX5069 features an input voltage UVLO/EN func-tion to enable the PWM controller before any operationcan begin. The MAX

hysteresis that allows the user to set a voltage (VOFF) todisable the controller (see Figure 3).At the beginning of the startup sequence, UVLO/EN isbe

MAX5069MAX5069A/B Startup OperationNormally, VINis derived from the tertiary winding of thetransformer. However, at startup there is no energydelivere

For example: To minimize power loss on this resistor, choose a high-er value for R1 than the one calculated above (if alonger startup time can be tole

MAX5069Oscillator/Switching FrequencyUse an external resistor at RT to program the MAX5069internal oscillator frequency from 50kHz to 2.5MHz. TheMAX50

Note that cycle-by-cycle current limiting is provided atall times by CS with a threshold of 314mV (typ). Thefault-integration circuit forces a 60µA cu

MAX5069Current LimitThe current-sense resistor (RCS), connected betweenthe source of the MOSFET and ground, sets the currentlimit. The CS input has a

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers_______________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers18 ____________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET DriversMaxim cannot assume responsibility for use of any circu

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers2 _____________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers_______________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers4 _____________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers_______________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers6 _____________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers_______________________________________________________

MAX5069High-Frequency, Current-Mode PWM Controllerwith Accurate Oscillator and Dual FET Drivers8 _____________________________________________________

Detailed DescriptionThe MAX5069 is a current-mode, dual MOSFET driver,PWM controller designed for isolated and nonisolatedpush-pull or half-/full-brid