TPS54341_15 datasheet(21/48 Pages) TI

部件名	TPS54341

功能描述	4.5-V to 42-V Input, 3.5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode?

PDF	48 Pages

Scroll/Zoom	100%

制造商	TI [Texas Instruments]

网页	http://www.ti.com

标志

21 / 48 page

RT/CLK

TPS54341

Clock

Source

PLL

RT/CLK

TPS54341

Hi-Z

Clock

Source

PLL

TPS54341

www.ti.com

SLVSC61 – NOVEMBER 2013

DETAILED DESCRIPTION (continued)

The switching frequency is divided by 8, 4, 2, and 1 as the FB pin voltage ramps from 0 to 0.8 V. The device

implements a digital frequency foldback which enables synchronization to an external clock during normal startup

and fault conditions. Figure 39, Figure 40 and Figure 41 show the device synchronized to an external system

clock in continuous conduction mode (CCM), discontinuous conduction (DCM), and pulse skip mode (Eco-Mode).

Figure 38. Synchronizing to a System Clock

Figure 39. Plot of Synchronizing in CCM

Figure 40. Plot of Synchronizing in DCM

Figure 41. Plot of Synchronizing in Eco-mode

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TPS54341 数据表(PDF) 21 Page - Texas Instruments