UC1846-SP是TI公司的一款PWM与谐振控制器产品，UC1846-SP是电流模式 PWM 控制器，本页介绍了UC1846-SP的产品说明、应用、特性等，并给出了与UC1846-SP相关的TI元器件型号供参考。
UC1846-SP - 电流模式 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司（Texas Instruments，德州仪器）
- QML-V Qualified, SMD 5962-8680603VxA (1)
- Rad-Tolerant: 40 kRad (Si) TID
- Automatic Feed-Forward Compensation
- Programmable Pulse-by-Pulse Current Limiting
- Automatic Symmetry Correction in Push-Pull Configuration
- Enhanced Load Response Characteristics
- Parallel-Operation Capability for Modular Power Systems
- Differential Current-Sense Amplifier With Wide Common-Mode Range
- Double-Pulse Suppression
- 500-mA (Peak) Totem-Pole Outputs
- ±1% Bandgap Reference
- Undervoltage Lockout (UVLO)
- Soft-Start Capability
- Shutdown Terminal
- 500-kHz Operation
- DC-DC Converters
- Satellite Buses and Payloads
- Space Launch Vehicles
- Undersea Cabling
- Available in Military Temperature Range (–55°C to 125°C)
- Supports Various Topologies:
- Flyback, Forward, Buck, Boost
- Push-Pull, Half-Bridge, Full Bridge With External Interface Circuit
The UC1846-SP control devices provide all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules while maintaining equal current sharing.
Protection circuitry includes built-in UVLO and programmable current limit in addition to soft start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.
Other features include fully latched operation, double-pulse suppression, deadline adjust capability, a ±1% trimmed bandgap reference, and low outputs in the OFF state.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| UC1846-SP | CDIP (16) | 6.92 mm × 19.56 mm |
| CFP (16) | 6.73 mm × 10.30 mm | |
| LCCC (20) | 8.89 mm × 8.89 mm | |
| KGD | N/A |
