Datasheet
ADP1877HC-EVALZ
Rev. A | Page 6 of 12
EVALUATION BOARD SCHEMATIC AND ARTWORK
DH1
VOUT1
FB1
FB2
TRK1
VOUT2
EN1
VIN
VIN
SYNC
SYNC
VDL
FREQ
FB1
VOUT1
FB2
VOUT2
TRK2
SW2
DH2
DL2
DL1
VOUT1
VOUT2
VDL
SW1
VIN
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VIN
VIN
VIN
VIN
Vin = 10V to 14V
VDL
VOUT2 = 1.05V @13A
VOUT1 = 1.8V @13
1.2nF
4.02 ohm
4.02 ohm
1.2nF
330uF 330uF
330uF 330uF
not fitted
CC21
1.2nF
T2
1
2
3
4
J3
2 Way Link
1 3
2
J4
2 Way Link
1
3
2
RB2
RC2
18.7k
DBOOT2
DIODE SCHOTTKY
TP5
1
RB1
TP8
1
TP1
1
CB
not fitted
RR2
845k
L1
1.2uH
TP15
1
CSS1
100nf
TP3
1
REN11
TP7
1
RGCS2
22.6K
RB3
QL1
not fitted
S1
S2
S3
G
D4
D3
D2
D1
U1
ADP1877-LFCSP
U1
EN1
1
SYNC
2
VIN
3
VCCO
4
VDL
5
AGND
6
TRK2
9
FB2
10
COMP2
11
RAMP2
12
SS2
13
PGOOD2
14
ILIM2
15
BST2
16
SW2
17
DH2
18
PGND2
19
DL2
20
DL1
21
PGND1
22
DH1
23
SW1
24
FREQ
7
EN2
8
TRK1
32
FB1
31
COMP1
30
RAMP1
29
SS1
28
PGOOD1
27
ILIM1
26
BST1
25
CSNB2
RT24
not fitted
Cin12
10uF
25V
25V
TP9
1
RT13
QH1
BSC080N03
S1
S2
S3
G
D4
D3
D2
D1
REN21
TP16
1
RGCS1
22.6K
QL2
BSC080N03
S1
S2
S3
G
D4
D3
D2
D1
CSNB1
DBOOT1
DIODE SCHOTTKY
QL3
BSC080N03
S1
S2
S3
G
D4
D3
D2
D1
RF22
10k
RPG2
TP13
1
+
COV23
+
TP4
1
+
CIN20
not fitted
+
CDR
1uF
RF21
7.5k
RSNB2
QL4
not fitted
S1
S2
S3
G
D4
D3
D2
D1
RT23
+
COV22
+
RILIM21
1.82k
QH3
BSC080N03
S1
S2
S3
G
D4
D3
D2
D1
+
CIN10
not fitted
+
RT12
REN22
RR1
845k
RF11
20K
RSNB1
+
COV21
22uF
++
COV2
22uF
+
+
COV1
22uF
+
QB
not fitted
T5
1
2
3
4
RDL1
3.01
QH4
not fitted
S1
S2
S3
G
D4
D3
D2
D1
CVIN
100nf
CLIM
RILIM11
1.82k
T3
1
2
3
4
J1
2 Way Link
1
3
2
T6
1
2
3
4
L2
1.2uH
CBST1
100nf
RT22
Cin11
10uF/25V
RT21
100K
QH2
not fitted
S1
S2
S3
G
D4
D3
D2
D1
RB0
2
TP10
1
TP12
1
CV5
1uF
CIN22
10uF/25V
TP11
1
+
COV12
+
TP14
1
RV5
open
open
RF12
10K
CC12
68pF
RDH2
3.01
CDL10
open
CLIM2
CC11
680pF
+
COV11
22uF
+
CIN21
10
25V
REN12
RDL2
3.01
CDL11
open
TP2
1
DZ
not fitted
RC1
31.6k
J2
2 Way Link
1
3
2
+
COV13
+
RFREQ
not fitted
TP6
1
T1
1
2
3
4
RT14
not fitted
RT11
100K
CBST2
100nf
RPG1
not fitted
RVCC0
0
0
RDH1
3.01
CC22
120pF
CSS2
100nf
T4
1
2
3
4
08460-008
Figure 8. Evaluation Board Schematic