Datasheet Texas Instruments UCC38503DWG4 — 数据表

制造商	Texas Instruments
系列	UCC38503
零件号	UCC38503DWG4

BiCMOS PFC / PWM组合控制器20-SOIC 0至70

数据表

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PDF, 1.1 Mb, 修订版: C, 档案已发布: Nov 8, 2001

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价格

状态

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

打包

Pin	20
Package Type	DW
Industry STD Term	SOIC
JEDEC Code	R-PDSO-G
Package QTY	25
Carrier	TUBE
Device Marking	UCC38503DW
Width (mm)	7.5
Length (mm)	12.8
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	PFC+PWM
Operating Supply Current	4 mA
Operating Supply(Max)	18 V
Operating Temperature Range	0 to 70 C
Package Group	SOIC
Package Size: mm2:W x L	20SOIC: 132 mm2: 10.3 x 12.8(SOIC) PKG
Peak Output Sink Current Gate Drive	1.2 A
Peak Output Source Current Gate Drive	-1.2 A
Practical Operating Frequency(Max)	0.2 MHz
Rating	Catalog
Special Features	< 150W Applications,Average Current Mode,Enable,OVP
Startup Current	0.15 mA
UVLO Thresholds On/Off	10.5/10 V

生态计划

RoHS

Compliant

应用须知

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A New Synchronization Circuit for Power Converters (Rev. A)
PDF, 209 Kb, 修订版: A, 档案已发布: Apr 21, 2010
The synchronization of multiple PWM and PFC controllers is desirable for many reasons. The most common reason is that it keeps all the noise at one particular frequency and makes it easier to filter. The circuit described changes the slope of the ramp to lock the converterвЂ™s switching frequency to an applied signal by a phase locked loop turning it into a voltage controlled oscillator. Furthermore
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Startup Current transient of the Leading Edge Triggered PFC Controllers
PDF, 43 Kb, 档案已发布: Jun 30, 2004
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Avoiding Audible Noise at Light Loads When Using Leading Edge Triggered PFC Con (Rev. C)
PDF, 57 Kb, 修订版: C, 档案已发布: Apr 13, 2011
This application note applies to the TI average current mode, leading edge modulation PFC controllers. See Applicable Device Table for part numbers.
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DN-66 UC3854A/B and UC3855A/B Provide Power Limiting with Sinusoidal Input (Rev. A)
PDF, 80 Kb, 修订版: A, 档案已发布: Nov 6, 2001
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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: UCC38503 (4)

UCC38503DW UCC38503DWG4 UCC38503DWTR UCC38503DWTRG4

制造商分类

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