LM25115

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42V、次级侧后置稳压器同步降压控制器

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数据表

document-pdfAcrobat LM25115 Secondary Side Post Regulator Controller 数据表 (Rev. A) (英语)

LM25115

正在供货

数据表

立即订购

产品详情

Vin (min) (V)

4.5

Vin (max) (V)

42

Operating temperature range (°C)

-40 to 125

Control mode

Voltage mode, current mode

Rating

Catalog

Vout (min) (V)

0.75

Vout (max) (V)

13.5

Duty cycle (max) (%)

85

Number of phases

1

Vin (min) (V)

4.5

Vin (max) (V)

42

Operating temperature range (°C)

-40 to 125

Control mode

Voltage mode, current mode

Rating

Catalog

Vout (min) (V)

0.75

Vout (max) (V)

13.5

Duty cycle (max) (%)

85

Number of phases

1

TSSOP (PW)

16

32 mm² 5 x 6.4

WSON (NHQ)

16

25 mm² 5 x 5

Self-synchronization to Main Channel Output
Free-run Mode for Buck Regulation of DC Input
Leading Edge Pulse Width Modulation
Voltage-mode Control with Current Injection and Input Line Feed-forward
Operates from AC or DC Input up to 42V
Wide 4.5V to 30V Bias Supply Range
Wide 0.75V to 13.5V Output Range.
Top and Bottom Gate Drivers Sink 2.5A Peak
Adaptive Gate Driver Dead-time Control
Wide Bandwidth Error Amplifier (4MHz)
Programmable Soft-start
Thermal Shutdown Protection
TSSOP-16 or Thermally Enhanced WSON-16 Packages

All trademarks are the property of their respective owners.

Self-synchronization to Main Channel Output
Free-run Mode for Buck Regulation of DC Input
Leading Edge Pulse Width Modulation
Voltage-mode Control with Current Injection and Input Line Feed-forward
Operates from AC or DC Input up to 42V
Wide 4.5V to 30V Bias Supply Range
Wide 0.75V to 13.5V Output Range.
Top and Bottom Gate Drivers Sink 2.5A Peak
Adaptive Gate Driver Dead-time Control
Wide Bandwidth Error Amplifier (4MHz)
Programmable Soft-start
Thermal Shutdown Protection
TSSOP-16 or Thermally Enhanced WSON-16 Packages

All trademarks are the property of their respective owners.

The LM25115 controller contains all of the features necessary to implement multiple output power converters utilizing the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM25115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.

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	类型	标题	下载最新的英语版本	日期
*	数据表	LM25115 Secondary Side Post Regulator Controller 数据表 (Rev. A)		2013年 4月 1日
	白皮书	Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A)		2019年 4月 10日
	选择指南	电源管理指南 2018 (Rev. K)		2018年 7月 31日
	选择指南	电源管理指南 2018 (Rev. R)		2018年 6月 25日
	模拟设计期刊	Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics		2016年 7月 21日
	EVM 用户指南	AN-1368 LM5115/5025A Evaluation Board (Rev. A)		2013年 4月 26日
	EVM 用户指南	AN-1367 LM5115 HV DC Evaluation Board (Rev. B)		2013年 4月 24日
	EVM 用户指南	AN-1542 LM5115A Evaluation Board (Rev. B)		2013年 4月 24日
	应用手册	Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A)		2013年 4月 23日
	应用手册	Minimizing FET Losses For a High Input Rail Buck Converter (cn)	最新英语版本 (Rev.A)	2007年 9月 5日
	用户指南	Application Note 1542 LM5115A Evaluation Board (cn)		2007年 3月 17日
	用户指南	Application Note 1367 LM5115 HV DC Evaluation Board (cn)		2005年 10月 18日