TPS40322_16 datasheet(32/47 Pages) TI1

Part #	TPS40322

Description	Dual Output or Two-Phase Synchronous Buck Controller

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Manufacturer	TI1 [Texas Instruments]

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TPS40322

SLUSAF8E – JULY 2011 – REVISED JANUARY 2016

www.ti.com

Figure 28 shows the switching waveform, VIN = 12 V, IOUT1 = IOUT2 = 10 A, Ch.1 = HDRV1, Ch.2 = LDRV1, Ch.3

= VOUT1 ripple. The high-frequency noise is caused by parasitic inductive and capacitive elements interacting

with the high energy, rapidly switching power elements resulting in ringing at the transition points. Capacitive

filtering at the load input will successfully attenuate these noise spikes.

Figure 28. Design Example 1 Switching Waveform

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