L6728A STMicroelectronics, L6728A Datasheet - Page 29

• Manufacturer Part Number: L6728A
• Description: Voltage Mode PWM Controllers Hi-Freq. singl-phase PWM controller w/Po
• Manufacturer: STMicroelectronics

Specifications of L6728A

• Number Of Outputs: Dual Output
• Topology: Buck
• Output Voltage: 0.8 V
• Output Current: 1500 mA
• Switching Frequency: 660 KHz
• Duty Cycle (max): 67 %
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Package / Case: VFDFPN-10 EP
• Synchronous Pin: No
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L6728A
12.2
Demonstration board characterization
Figure 16
terms of accuracy and efficiency.
Figure 16. 5 A demonstration board performances
Figure 17. Demonstration boards power consumption @ 0 A output current
-0,1%
-0,2%
-0,3%
100%
1,2
1,0
0,8
0,6
0,4
0,2
0,0
0,3%
0,2%
0,1%
0,0%
90%
80%
70%
60%
50%
40%
4
0,0
4
5
0,5
5
and
6
1,0
6
5A Demoboard Power Consumption
Figure 17
7
1,5
7
Load / Line Regulation
Input Voltage @ 8 V
8
2,0
8
Output Current [A]
Input Voltage [V]
Input Voltage [V]
9
2,5
9
show the electrical performances of the demonstration board in
Vout = 0.8 V
Vout = 2.5 V
Vout = 5 V
10
3,0
10
0A
11
3,5
11
4,0
12
12
2.5A
Vout = 1.25 V
Vout = 3.3 V
4,5
13
13
5,0
14
14
5A
5,5
15
15
100%
1,2
1,0
0,8
0,6
0,4
0,2
0,0
100%
90%
80%
70%
60%
50%
40%
90%
80%
70%
60%
50%
40%
4
0,0
0,0
5
0,5
0,5
6
1,0
1,0
20A Demoboard Power Consumption
7
1,5
1,5
Input Voltage @ 12 V
Input Voltage @ 5 V
8
2,0
2,0
5A demonstration board
Input Voltage [V]
Output Current [A]
Output Current [A]
9
2,5
2,5
Vout = 0.8 V
Vout = 2.5 V
Vout = 0.8 V
Vout = 2.5 V
Vout = 5 V
10
3,0
3,0
11
3,5
3,5
4,0
12
4,0
Vout = 1.25 V
Vout = 3.3 V
Vout = 1.25 V
Vout = 3.3 V
Vout = 8 V
4,5
4,5
13
5,0
5,0
14
29/32
5,5
5,5
15