UC1846-SP - 电流模式 PWM 控制器

UC1846-SP是TI德州仪器公司的一款PWM与谐振控制器产品，UC1846-SP是电流模式 PWM 控制器，本站介绍了UC1846-SP的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品特性

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

(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mRad/s. Radiation Lot Acceptance Testing is available - contact factory for details.

产品应用

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

产品说明

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.

产品器件信息

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

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