UC1846

활성

전류 모드 PWM 컨트롤러

지금 주문

데이터 시트

document-pdfAcrobat UCx846/7 Current Mode PWM Controller datasheet (Rev. C) (영어) PDF | HTML

UC1846

활성

데이터 시트

지금 주문

제품 상세 정보

Rating

Military

Topology

Boost, Flyback, Forward, Full bridge, Half bridge, Push pull

Vin (max) (V)

40

Control mode

Current

Features

Error amplifier, Multi-topology, Soft start, Synchronization pin

Operating temperature range (°C)

-55 to 125

Duty cycle (max) (%)

50

Rating

Military

Topology

Boost, Flyback, Forward, Full bridge, Half bridge, Push pull

Vin (max) (V)

40

Control mode

Current

Features

Error amplifier, Multi-topology, Soft start, Synchronization pin

Operating temperature range (°C)

-55 to 125

Duty cycle (max) (%)

50

CDIP (J)

16

135.3552 mm² 19.56 x 6.92

LCCC (FK)

20

79.0321 mm² 8.89 x 8.89

Automatic Feedforward 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% Band Gap Reference
Undervoltage Lockout
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

Automatic Feedforward 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% Band Gap Reference
Undervoltage Lockout
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

The UC1846/7 family of control devices provides 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 while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout 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, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

The UC1846/7 family of control devices provides 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 while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout 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, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

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