TL1451A - Texas Instruments

TL1451A Dual PWM Controller

The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and d.

Features

Designed primarily for power-supply control, the TL1451A contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits. 3 2 1 20 19 1IN+ 4 18 2IN+ 1IN
  – 5 17 2IN
  – NC 6 16 NC 1FEEDBACK 7 15 2FEEDBACK IDTC 8 14 2DTC 9 10 11 12 13 1OUT GND NC V CC 2OUT The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control .