Datasheet Texas Instruments UC2854DWG4 — 数据表

制造商	Texas Instruments
系列	UC2854
零件号	UC2854DWG4

高功率因数预调节器16-SOIC -40至85

数据表

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PDF, 949 Kb, 修订版: A, 档案已发布: Dec 16, 2016

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价格

状态

Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	Yes

打包

Pin	16
Package Type	DW
Industry STD Term	SOIC
JEDEC Code	R-PDSO-G
Package QTY	40
Carrier	TUBE
Device Marking	UC2854DW
Width (mm)	7.5
Length (mm)	10.3
Thickness (mm)	2.35
Pitch (mm)	1.27
Max Height (mm)	2.65
Mechanical Data	下载

参数化

Control Method	CCM
Device Type	Single-phase PFC
Operating Supply Current	10 mA
Operating Supply(Max)	30 V
Operating Temperature Range	-40 to 85 C
Package Group	SOIC
Package Size: mm2:W x L	16SOIC: 106 mm2: 10.3 x 10.3(SOIC) PKG
Peak Output Sink Current Gate Drive	1 A
Peak Output Source Current Gate Drive	-1 A
Practical Operating Frequency(Max)	0.2 MHz
Rating	Catalog
Special Features	Average Current Mode,Enable
Startup Current	1.5 mA
UVLO Thresholds On/Off	16/10 V

生态计划

RoHS

Compliant

应用须知

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U-134 UC3854 Controlled Power Factor Correction Circuit Design
PDF, 346 Kb, 档案已发布: Sep 5, 1999
The UC1854 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. This application note describes the concepts and design of a boost prere
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DN-39E Optimizing Performance in UC3854 Power Factor Correction Applications
PDF, 277 Kb, 档案已发布: Sep 5, 1999
The performance of the UC3854 Power-Factor Correction IC in the 250W application example has been evaluated using a precision PFC/THD instrument. The result was a power factor of 0.999 and Total Harmonic Distortion (THD) of 3.81%, measured to the 50th line frequency harmonic at nominal line and full load. Users should get similar results at these conditions. as well as over most line and load rang
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DN-41 Extend Current Transformer Range
PDF, 37 Kb, 档案已发布: Sep 5, 1999
The problems with self reset of current transformers for unipolar pulse applications can be overcome with simple forced-reset techniques derived from magnetic amplifiers. Duty factors above 90% are achievable with these techniques. This design note describes a circuit configured for forced reset and a configuration that generates a negative voltage from the current transformer.
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AC Requirements for Power Factor Correction Circuits
PDF, 29 Kb, 档案已发布: Mar 28, 2002
This technical brief identifies the recommended range of IAC for each of the devices within the UCC3854 family of PFC controllers.
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Accurate PWM Duty Cycle Clamp
PDF, 58 Kb, 档案已发布: Jan 25, 2002
Power supply applications using current sense transformers require a duty cycle clamp on the pulse width modulator (PWM) to ensure transformer reset. Not all PWMs come with a duty cycle clamp presenting a problem for the power supply designer. This application note shows how to implement a duty cycle clamp by using a simple delay circuit.

模型线

系列: UC2854 (6)

UC2854DW UC2854DWG4 UC2854DWTR UC2854DWTRG4 UC2854N UC2854NG4

制造商分类

Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction