器件名称:
TL594INSRG4
功能描述:
PULSE-WIDTH-MODULATION CONTROL CIRCUIT
文件大小:
641.09KB 共19页
简 介:
TL594 PULSE-WIDTH-MODULATION CONTROL CIRCUIT www.ti.com SLVS052G – APRIL 1988 – REVISED JANUARY 2007 FEATURES Complete PWM Power-Control Circuitry Uncommitted Outputs for 200-mA Sink or Source Current Output Control Selects Single-Ended or Push-Pull Operation Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 5-V Reference Supply Trimmed to 1% Circuit Architecture Allows Easy Synchronization Undervoltage Lockout for Low-VCC Conditions D, N, NS, OR PW PACKAGE (TOP VIEW) 1IN+ 1INFEEDBACK DTC CT RT GND C1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 2IN+ 2INREF OUTPUT CTRL VCC C2 E2 E1 DESCRIPTION/ORDERING INFORMATION The TL594 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the systems engineer the flexibility to tailor the power-supply control circuitry to a specific application. The TL594 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V regulator with a precision of 1%, an undervoltage lockout control circuit, and output control circuitry. The error amplifiers have a common-mode voltage range of –0.3 V to VCC – 2 V. The DTC comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by ter……
