EVAL6730 Datasheet, PDF (6/9 Pages) STMicroelectronics – L6730 demoboard realizes in a four layer PCB a step-down DC/DC converter and shows

Features
EVAL6730
1.2
Efficiency
The following figures show the demoboard efficiency versus load current for different values
of input voltage and switching frequency:
Figure 3. Demoboard efficiency - Fsw=400 KHz
Fsw=400KHz
Vo=3.3V
95.00%
90.00%
Vin=5V
85.00%
80.00%
Vin=12V
75.00%
1
3
5
7
9
Iout (A)
11
13
15
Figure 4. Demoboard efficiency - Fsw=645 KHz
Fsw=645KHz
Vo=3.3V
95.00%
90.00%
85.00% ^Vin=5V
80.00%
75.00%
Vin=12V
70.00%
1
3
5
7
9
Iout (A)
11
13
15
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