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DC1432A-A

P1-P3P4-P5
LTC3851AEUD/ LTC3851
AEUD
-
1
4
65
70
75
80
85
90
95
0 2 4 6 8 10 12 14 16
Efficiency (%)
Load Current (A)
Demonstration Circuit 1432A (LTC3851AEUD/LTC3851AEUD-1)
Test Efficiency
Vin=12V Current Sensing Resistor
Vin=12V Inductor DCR Sensing
Figure 3.
Efficiency Curve for Demonstration Circuit 1432A
Figure 4.
Efficiency Curve for Demonstration Circuit 1432A with Optional Inductor DCR Current Sensing
65
70
75
80
85
90
95
0 2 4 6 8 10 12 14 16
Efficiency (%)
Load Current (A)
Demonstration Circuit
1432
A (LTC
3851
AEUD/LTC
3851
AEUD
-
1
)
Test Efficiency
Vin=4.5V CCM
Vin=12V CCM
Vin=14V CCM
LTC3851AEUD/ LTC3851
AEUD
-
1
5
C20
1nF
VOUT
R35
OPT
JP3
MODE/PLLIN
CCM P.S .BURST
1
2
3
4
CIN6
22uF
25V
R40
6.49K
1%
E2
TRK/SS
E9
E4
MODE/PLLIN
C27
2.2uF
10V
ASSY
R48
OPT
+
COUT1
330uF
2.5V
- B
E8
GND
JP2
RUN
OFFON
1
2
3
Si4816BDY
E6
GND
VIN
R36
0
R44
OPT
- A
Q3
RJ K0329DPB
3
1
2
4
5
R29 OPT
Q1
RJ K0305DPB
3
1
2
4
5
C18 OPT
C25
0.1uF
10V
J2
GND
E1
RUN
R37
2.2
SW
VIN
R47
OPT
R43
OPT
R30
97.6K
1%
R39
43.2K
1%
R41
0
C29
OPT
LTC3851AEUD-1
JP1
FREQ/PLLFLTR
3 50 K EX T CL K
1
2
3
R32 0
C26
3300pF
+
COUT2
330uF
2.5V
R9 100
[1]
INTVCC
C28
470pF
E7
VOUT
R42
BG
COUT3
47uF
6.3V
INTVCC
C22
10nF
RSNSE
0.002 OHM
R10 100
LTC3851AEUD
INTVCC
R38
49.9K
1%
OPTIONAL DCR
J4
GND
R1 OPT
U1
R46
200K
1%
C31
4.7uF
10V
VIN
R31
1K
CIN3
22uF
25V
J3
1.5V / 15A
VOUT
INTVCC
SENSI NG
SW
D2
CMDSH-3
21
L1 0.4uH
C24
0.1uF
10V
C30
1nF
BG
VOUT
J1
4.5V - 14V
VIN
+
CIN1
150uF
16V
Q4
OPT
3
1
2
4
5
100K
TG
CIN5
OPT
CIN4
OPT
C19
1uF
Q5
OPT
2
3
1
4
5
6
7
8
TG
INTVCC
ILIM
E5
VIN
OPT
PGOOD
C23
OPT
R27
OPT
VIN
E9
[1]
R42
[1]
U1
[1]
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
MODE/PLLIN
FREQ/PLLFLTR
RUN
TK/SS
ITH
FB
SENSE-
SENSE+
ILIM
GND
BG
INTVCC
VIN
BOOST
TG
SW
GND
C32
OPT
R45
OPT
CIN7
OPT
ISET
Q2
OPT
3
1
2
4
5
Figure 5.
Demonstration Circuit 1432A Schematic
P1-P3P4-P5

DC1432A-A

Mfr. #:
Buy DC1432A-A
Manufacturer:
Analog Devices Inc.
Description:
Power Management IC Development Tools LTC3851AUED Demo Board with Adjustable C
Lifecycle:
New from this manufacturer.
Delivery:
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