Texas Instruments 8-14V Vin, 1.8V Vout Synchronous Buck Converter Evaluation Module for TPS40305 TPS40305EVM-488 TPS40305EVM-488 Datenbogen
Produktcode
TPS40305EVM-488
TPS40305/HPA488 Switching Waveforms
Vin = 14 V, Vout = 1.8 V, Iout = 10 A
Vin = 14 V, Vout = 1.8 V, Iout = 10 A
-60
-40
-20
0
20
40
60
80
100
0.1
1
10
100
1000
f - Frequency - kHz
-135
-90
-45
0
45
90
135
180
225
Gain
Phase
Gain-dB
TPS40305EVM-488 Test Data
www.ti.com
6.4
Switch Node
V
IN
= 12V, V
OUT
= 1.8V, I
OUT
= 10A
Ch1: TP12 (HDRV), Ch2:13 TP (SW), Ch3: TP14 (LDRV)
Figure 8. TPS40305EVM-488 Switching Waveforms
6.5
Control Loop Bode Diagram
V
IN
= 14V, V
OUT
= 1.8V, I
OUT
= 10A, Bandwidth: 83kHz, Phase Margin: 55°
Figure 9. TPS40305EVM-488 Gain and Phase vs. Frequency
12
TPS40305EVM-488
SLUU406 – February 2010
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