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UC1525A-穩壓脈寬調制器
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UC1525A - 穩壓脈寬調制器

UC1525A是TI公司(德州儀器)的一款PWM與諧振控制器產品,UC1525A是穩壓脈寬調制器,本站介紹了UC1525A的產品說明、應用、特性等,并給出了與UC1525A相關的TI元器件型號供參考.

UC1525A - Regulating Pulse Width Modulators - TI德州儀器(Texas Instruments)

產品描述

The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1-V reference is trimmed to ±1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the CT and the discharge terminals provides a wide range of dead-time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands.

產品特性

  • 8-V to 35-V Operation
  • 5.1-V Reference Trimmed to ±1%
  • 100-Hz to 500-kHz Oscillator Range
  • Separate Oscillator Sync Terminal
  • Adjustable Deadtime Control
  • Internal Soft-Start
  • Pulse-by-Pulse Shutdown
  • Input Undervoltage Lockout With Hysteresis
  • Latching PWM to Prevent Multiple Pulses
  • Dual Source/Sink Output Drivers

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