TL594 PWM Controller | TI.com

TL594
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PWM Controller

 

Description

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 undervoltage 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 undervoltage lockout control circuit locks the outputs off until the internal circuitry is operational.

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 (UVLO) for Low-VCC Conditions

Parametrics

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Part number Order Topology Control method VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) UVLO thresholds on/off (V) Duty cycle (Max) (%) Gate drive (Typ) (A) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TL594 Order now Boost
Buck
Flyback
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Voltage     7     40     300     6.1/6     45     0.2     Adjustable Switching Frequency
Dead Time Control
Error Amplifier
Multi-topology    
Catalog     -40 to 85
0 to 70    
PDIP | 16
SOIC | 16
SO | 16
TSSOP | 16    
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SO: 80 mm2: 7.8 x 10.2 (SO | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
SG2524 Order now Boost
Buck
Flyback
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Voltage     8     40     722         45     0.05     Adjustable Switching Frequency
Error Amplifier
Multi-topology    
Catalog     -25 to 85     PDIP | 16
SOIC | 16    
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
SG3524 Order now Boost
Buck
Flyback
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Voltage     8     40     722         45     0.05     Adjustable Switching Frequency
Error Amplifier
Multi-topology    
Catalog     0 to 70     PDIP | 16
SOIC | 16
SO | 16    
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SO: 80 mm2: 7.8 x 10.2 (SO | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
TL494 Order now Boost
Buck
Flyback
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Voltage     7     40     300         45     0.2     Adjustable Switching Frequency
Dead Time Control
Error Amplifier
Multi-topology    
Catalog     -40 to 85
0 to 70    
PDIP | 16
SOIC | 16
SO | 16
TSSOP | 16    
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SO: 80 mm2: 7.8 x 10.2 (SO | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)