SLMA002 datasheet(18/46 Pages) TI1

Part #	SLMA002

Description	3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET AND EXTERNAL COMPENSATION

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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18 / 46 page

TPS5538x

11.5 kW

Error Amplifier

0.8 V

REF

BOOT

Offset

f(I

DRAIN

)

PWM to

Switch

SLOPE

COMP

UDG-08040

COMP

– I

SLOPE

VREF

VIN

VOUT

Compensation

Network

Modulator

Filter

Current

Feedback

Network

TPS55383

,, TPS55386

SLUS818 – SEPTEMBER 2008 ......................................................................................................................................................................................... www.ti.com

Figure 22. Feedback Loop Equivalent Circuit

A more conventional small-signal equivalent block diagram is shown in Figure 23. Here, the full closed-loop

signal path is shown. Because the TPS5538x contains internal slope compensation, the external L-C filter must

be selected appropriately so that the resulting control loop meets criteria for stability.

Figure 23. Small Signal Equivalent Block Diagram

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Product Folder Link(s): TPS55383 TPS55386

SLMA002 Datasheet(PDF) 18 Page - Texas Instruments

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