LT3837EFE-TRPBF datasheet(13/28 Pages) LINER

部件名	LT3837EFE-TRPBF

功能描述	Isolated No-Opto Synchronous Flyback Controller

Download	28 Pages

Scroll/Zoom	100%

制造商	LINER [Linear Technology]

网页	http://www.linear.com

标志

13 / 28 page

LT3837

13

3837fa

APPLICATIONS INFORMATION

Primary Winding Feedback

The previous work was developed using a separate wind-

ing for voltage feedback. It is possible to use the primary

winding as the feedback winding as well. This can simplify

the design of the transformer.

When using the primary winding the feedback voltage

will be added to the VIN voltage so:

V

VI

ESR R

N

FLYBK

OUT

DS ON

SP

=

+•

+

()

where NSP is the transformer effective secondary to

primary winding turns ratio. Use the circuit of Figure 2

to get more accurate output regulation. In this case the

regulation equations becomes:

R

V

VI

ESR R

N

V

FB

OUT

DS ON

SP

BE

1

2

=•

+•

+

()

−

⎡

⎣

⎢

()

⎤⎤

⎦

⎥

where VBE is the base emitter drop of the PNP (approxi-

mately 0.7V).

Likewise the load compensation equation needs to be

changed to use NSP instead of NSF so:

RK

RDC

ESR R

RN

CMP

SENSE

DS ON

SF

=

()

+

1

•

•–

••

()

•

MS

MP

R2

R1

SECONDARY

PRIMARY

COUT

VIN

VFLYBK

3837 F10

•

LT3837

FB

PG

Figure 2

类似零件编号 - LT3837EFE-TRPBF

制造商	部件名	数据表	功能描述
Linear Technology	LT3837	343Kb / 24P	10A High Effi ciency DC/DC 關Module
	LT3837	574Kb / 26P	Low VIN, 8A DC/DC Module Regulator with Tracking, Margining, and Frequency Synchronization
	LT3837	321Kb / 28P	Isolated No-Opto Synchronous Flyback Controller

More results

类似说明 - LT3837EFE-TRPBF

制造商	部件名	数据表	功能描述
Linear Technology	LT3837	321Kb / 28P	Isolated No-Opto Synchronous Flyback Controller
	LTC4278	504Kb / 42P	Synchronous No-Opto Flyback Controller
	LT3798	257Kb / 20P	Isolated No Opto-Coupler Flyback Controller
Maxim Integrated Produc...	MAX17690	802Kb / 22P	60V, No-Opto Isolated Flyback Controller Rev 1; 12/16
Linear Technology	LT3825	350Kb / 32P	Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range
Linear Technology	LT3825	386Kb / 32P	Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range
Analog Devices	LT8306	613Kb / 29P	60V Low IQ No-Opto Isolated Flyback Controller Rev 0
Linear Technology	LT3798	418Kb / 20P	Isolated No Opto-Coupler Flyback Controller with Active PFC
	LT8302	556Kb / 6P	Micropower No-Opto Isolated Flyback Converter
	LTC4269-1	391Kb / 44P	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller