DC1663A Linear Technology, DC1663A Datasheet - Page 4

• Manufacturer Part Number: DC1663A
• Description: DEMO BOARD LTM4628
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1663A

• Design Resources: LTM4628 Spice Model LTM4628 Gerber Files DC1663 Design Files DC1663 Schematic
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Power - Output: -
• Voltage - Output: 1.2V, 1.5V
• Current - Output: 8A, 8A
• Voltage - Input: 4.5 ~ 26.5 V
• Regulator Topology: Buck
• Frequency - Switching: 400kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM4628
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

QUICK START PROCEDURE
DEMO MANUAL DC1663A
0A TO 4A STEP
4
AC-COUPLED
100mV/DIV
20MHz BW
3.3A/DIV
V
I
OUT1
OUT1
Figure 2. Measured Efficiency on Channel 1
(V
Figure 4. Measured Channel 1 Load Transient
(V
OUT1
95
90
85
80
75
70
65
60
IN
0
= 12V, V
= 1.5V, f
1
2
OUT1
LOAD CURRENT (A)
SW
3
= 1.5V)
= 400kHz, Channel 2 Disabled)
1.2V OUTPUT
1.5V OUTPUT
AC-COUPLED
AC-COUPLED
Figure 6. Measured Output Voltage Ripple at 12V Input, 1.5V and
1.2V Output, 8A Per Channel with Standard Demo Circuit Default Setup
4
20MHz BW
20MHz BW
50mV/DIV
50mV/DIV
5
6
5V
9V
12V
15V
18V
7
IN
IN
1663 F02
IN
IN
IN
8
1663 F04
0A TO 4A STEP
AC-COUPLED
100mV/DIV
20MHz BW
3.3A/DIV
V
I
OUT2
OUT2
Figure 3. Measured Efficiency on Channel 2
(V
Figure 5. Measured Channel 2 Load Transient
(V
OUT2
95
90
85
80
75
70
65
60
IN
0
= 12V, V
= 1.2V, f
1
1663 F06
2
OUT2
LOAD CURRENT (A)
SW
3
= 400kHz, Channel 1 Disabled)
= 1.2V)
4
5
6
5V
9V
12V
15V
18V
7
IN
IN
1663 F03
IN
IN
IN
8
dc1663af
1663 F05