TL594: PWM Controller
The TL594 PWM Controller 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 PWM Controller 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 1.5%, 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 terminating RT to the reference output and providing a sawtooth input to CT, or it can be used to drive the common circuitry in synchronous multiple-rail power supplies.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.The TL594CD, CN, CDTB are characterized for operation from -40C to 85C.
特性- PWM Buck Controller Configuration
- Variable Frequency Operation (up to 300 KHz)
- Complete Pulse Width Modulation Control Circuitry
- On-Chip Oscillator with Master or Slave Operation
- On-Chip Error Amplifiers
- On-Chip 5.0 V Reference, 1.5% Accuracy
- Adjustable Deadtime Control
- Uncommitted Output Transistors Rated to 500 mA Source or Sink
- Output Control for Push-Pull or Single-Ended Operation
- Undervoltage Lockout
- Pb-Free Packages are Available
| 优势- Simple to use in buck configuration
- Optimize system size and efficiency
|
应用- Off-line power supply
- Buck converter
| 终端产品- VPA (Vehicle Power Adapter)
- LED Lighting
|
封装
数据表 (1)
封装图纸 (3)
产品订购型号
| 产品 | 状况 | Compliance | 封装 | MSL* | 容器 | 预算价格 (1千个数量的单价） |
|---|
| TL594CDG | Last Shipments | Pb-free | SOIC-16 | 751B-05 | 1 | Tube | 48 | |
| TL594CDR2G | Active | Pb-free | SOIC-16 | 751B-05 | 1 | Tape and Reel | 2500 | $0.56 |
| TL594CDTBG | Last Shipments | Pb-free
Halide free | TSSOP-16 | 948F-01 | 1 | Tube | 96 | |
| TL594CDTBR2G | Active | Pb-free
Halide free | TSSOP-16 | 948F-01 | 1 | Tape and Reel | 2500 | 联系BDTIC |
| TL594CNG | Last Shipments | Pb-free
Halide free | PDIP-16 | 648-08 | NA | Tube | 500 | |
订购产品技术参数
| Product | Topology | Phases | Control Mode | VCC Min (V) | VCC Max (V) | fSW Typ (kHz) | tres Typ (ns) |
|---|
| TL594CDR2G | Flyback
Push-Pull
Forward | 1 | Voltage Mode | 6 | 42 | Up to 300 | 100 |
| TL594CDTBR2G | Push-Pull
Forward
Flyback | 1 | Voltage Mode | 6 | 42 | Up to 300 | 100 |
