LM5035CSQXSLASHNOPB datasheet(18/35 Pages) TI

tên linh kiện	LM5035CSQX/NOPB

Giải thích chi tiết về linh kiện	PWM Controller with Integrated Half-Bridge and SyncFET Drivers

PDF	35 Pages

Scroll/Zoom	100%

nhà sản xuất	TI [Texas Instruments]

Trang chủ	http://www.ti.com

Logo

18 / 35 page

LM5035C

AGND

Power

Transformer

VPWR

VIN

Current

Sense

LM5035C

VPWR

8.3V - 15V

(from aux winding)

VIN

VCC

LM5035C

VPWR

0.1 PF

VIN

LM5035C

SNVS631C – JANUARY 2010 – REVISED MARCH 2013

www.ti.com

Current Sense

The CS pin needs to receive an input signal representative of the transformer’s primary current, either from a

current sense transformer or from a resistor in series with the source of the LO switch, as shown in Figure 20

and Figure 21. In both cases, the sensed current creates a ramping voltage across R1, and the RF/CF filter

suppresses noise and transients. R1, RF and CF should be located as close to the LM5035C as possible, and the

ground connection from the current sense transformer, or R1, should be a dedicated track to the AGND pin. The

current sense components must provide greater than 0.25V at the CS pin when an over-current condition exists.

Figure 18. Input Transient Protection

Figure 19. Start-Up Regulator for VPWR >100V

Figure 20. Current Sense Using Current Sense Transformer

Submit Documentation Feedback

Product Folder Links: LM5035C

LM5035CSQX/NOPB bảng dữ liệu(PDF) 18 Page - Texas Instruments