TL594 Pulse Width Modulation Control Circuit

The TL594 device 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 device 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 under voltage lockout control circuit, and output control circuitry. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Each device provides for push-pull or single-ended output operation, with selection by means of the output-control function. The architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation. The under voltage lockout control circuit locks the outputs off until the internal circuitry is operational.

Features:

1. • Complete PWM Power-Control Circuitry
2. • Uncommitted Outputs for 200-mA Sink or Source Current
3. • Output Control Selects Single-Ended or Push-Pull Operation
4. • Internal Circuitry Prohibits Double Pulse at Either Output
5. • Variable Dead Time Provides Control Over Total Range
6. • Internal Regulator Provides a Stable 5-V Reference Supply Trimmed to 1%
7. • Circuit Architecture Allows Easy Synchronization
8. • Under voltage Lockout (UVLO) for Low-VCC Conditions

Applications:

1. • White Goods
2. • Power Supplies: AC/DC, Isolated, With PFC, > 90 W
3. • Server PSUs
4. • Solar Micro-Inverters
5. • Power Supplies: AC/DC, Isolated, No PFC, < 90 W
6. • Power: Telecom/Server AC/DC Supplies
7. • Solar Power Inverters

Packing List:

• 1pc x TL594 Pulse Width Modulation Control Circuit