Datasheet

LOADCURRENT

PATH

SENSE

LOADCURRENT

PATH

M0217-01

SET

Method1

SENSE

VCC

SET

TPS24720

Method2

TPS24720

SET

TPS24720

SLVSAL1C –MARCH 2011–REVISED SEPTEMBER 2013

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Layout Considerations

TPS24720 applications require careful attention to layout to ensure proper performance and to minimize

susceptibility to transients and noise. In general, all traces should be as short as possible, but the following list

deserves first consideration:

• Decoupling capacitors on VCC pin should have minimal trace lengths to the pin and to GND.

• Traces to SET and SENSE must be short and run side-by-side to maximize common-mode rejection. Kelvin

connections should be used at the points of contact with R

SENSE

(see Figure 40).

• SET runs must be short on both sides of R

SET

• Power path connections should be as short as possible and sized to carry at least twice the full-load current,

more if possible.

• Connections to GND and IMON pins should be minimized after the previously described connections have

been placed.

• The device dissipates low power, so soldering the thermal pad to the board is not a requirement. However,

doing so improves thermal performance and reduces susceptibility to noise.

• Protection devices such as snubbers, TVS, capacitors, or diodes should be placed physically close to the

device they are intended to protect, and routed with short traces to reduce inductance. For example, the

protection Schottky diode shown in the typical application diagram on the front page of the data sheet should

be physically close to the OUT pin.

Figure 40. Recommended R

SENSE

Layout

Product Folder Links: TPS24720