DC2190A - Demo Manual

DEMO MANUAL
DC2190A-A/DC2190A-B
LTC3892EFE-1
PolyPhase High VOUT
Synchronous Buck Converter
DESCRIPTION
Demonstration circuit 2190A is a high output voltage,
high efficiency synchronous PolyPhase® buck converter
featuring the LTC®3892EFE-1. This demo circuit is available
in two versions. The input voltage range of both versions
is from 16V to 55V. The DC2190A-A is configured using
two each LTC3892EFE-1 devices with 4-phase interleaving operation which provides a 12V/60A output, while
the DC2190A-B is configured using one LTC3892EFE-1
device with 2-phase interleaving operation which provides
a 12V/30A output.
Both boards have a mode selection jumper that allows the
converter to run in forced CCM mode, pulse-skip mode
or Burst Mode® operation. Synchronization to an external
clock (frequency range 100kHz to 300kHz) is also possible
on this board.
PERFORMANCE SUMMARY
The demo circuit senses inductor current with a sense
resistor but also has an optional DCR sense circuit that
allows using the inductor’s DCR as the current sensing
element to save cost, footprint and improve efficiency.
The LTC3892EFE-1 data sheet gives a complete description
of these parts, operation and application information and
must be read in conjunction with this quick start guide
for DC2190A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2190A
L, LT, LTC, LTM, Linear Technology and the Linear logo, PolyPhase and Burst Mode are
registered trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Specifications are at TA = 25°C
DC2190A-B
SYMBOL
PARAMETER
VIN
Input Supply Range
CONDITIONS
MIN
TYP
16
VOUT
Output Voltage Range
fSW
Typical Free Running Switching Frequency
VIN =16V to 55V, IOUT = 0A to 30A/2-Phase
11.8
Efficiency
2-Phase Efficiency
See Figure 3 for Efficiency Curves
VIN = 48V, VOUT1 = 12V, IOUT = 30A
SYMBOL
PARAMETER
CONDITIONS
MIN
VIN
Input Supply Range
VOUT
Output Voltage Range
VIN =16V to 55V, IOUT = 0A to 60A/4-Phase
11.8
fSW
Typical Free Running Switching Frequency
Efficiency
4-Phase Efficiency
See Figure 4 for Efficiency Curves
MAX
55
12
12.2
UNITS
V
V
140
kHz
97.2
%
DC2190A-A
TYP
MAX
55
V
12
12.2
V
16
VIN = 48V, VOUT1 = 12V, IOUT = 60A
UNITS
140
kHz
97.2
%
dc2190afa
1
DEMO MANUAL
DC2190A-A/DC2190A-B
QUICK START PROCEDURE
Demonstration circuit DC2190A is easy to set up to evaluate the performance of the LTC3892-1. Refer to Figure 1
for proper measurement equipment setup and follow the
procedure below.
For synchronizing to an external clock source, apply the
external clock from SYNC turret to GND.
NOTE: When measuring the input or output voltage ripple,
care must be taken to avoid a long ground lead on the
oscilloscope probe. Measure the input or output voltage
ripple by touching the probe tip directly across the VIN
or VOUT and GND terminals or directly across relevant
capacitor. See Figure 2 for proper scope probe technique.
Table 1. Mode Selection and Synchronizing Operation Options
1.Place jumpers in the following positions:
JP1:
Int. SYNC
JP2:
ON
JP3:
Int. (DC2190A-A Only)
2.With power off, connect the input power supply to VIN
and GND. Connect the load to the output. The load
current should be smaller than 60A for DC2190A-A
and smaller than 30A for DC2190A-B.
3.Turn on the power at the input.
NOTE: Make sure that the input voltage is between
16V and 55V.
4.Check for the proper output voltages.
Refer to Table 1 and to the data sheet for more details.
CONFIGURATION
Forced Continuous Conduction
Operation
Pulse-Skip Mode Operation
Burst Mode Operation
Synchronize to Ext. Clock (Ext.
Clock Apply to SYNC Turret)
JP1
JP3
(DC2190A-A ONLY)
Int. SYNC
Int.
Ext.SYNC/
Pulse-Skip.
Ext./Pulse-Skip
Burst
Ext./Pulse-Skip
Ext. SYNC/
Pulse-Skip
Ext./Pulse-Skip
OPTIONAL INDUCTOR DCR CURRENT SENSING
Demonstration circuit 2190A provides an optional circuit
for inductor DCR current sensing. Inductor DCR current
sensing uses the DCR of the inductor to sense the inductor
current instead of discrete sense resistors. The advantages
of DCR sensing are lower cost, reduced board space and
higher efficiency, but the disadvantage is a less accurate
current limit. If DCR sensing is used, be sure to select an
inductor with sufficiently high saturation current or use
an iron powder type material.
VOUT = 11.8V to 12.2V
Refer to Table 2 for optional inductor DCR current sensing
setup and to the data sheet for more details.
NOTE: If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
POWER THE EXTVCC FROM EXTERNAL SUPPLY
5.Once the proper output voltages are established, adjust
the loads within the operating range and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters.
FREQUENCY SYNCHRONIZATION AND MODE
SELECTION
The DC2190A’s mode selector allows the converter to
run in FCC operation, pulse-skip operation, Burst Mode
or be synchronizing to an external clock by changing the
position of JP1 and JP3.
2
The DC2190A EXTVCC turret is tied to the 12V VOUT by
default. To power the EXTVCC from external supply:
1.Remove the R7.
2.Solder a 16V, 1μF MLCC between EXTVCC and GND
turret.
3.Apply a DC voltage (<14V) between the EXTVCC and
GND turret, after the input voltage is established. Ensure
that EXTVCC ≤ VIN.
dc2190afa
DEMO MANUAL
DC2190A-A/DC2190A-B
QUICK START PROCEDURE
Table 2. Optional Inductor DCR Current Sensing
Configuration
CHANNEL1
RS1
R18
R20
C13
C29
R23
R26
R24
CHANNEL2
RS2
R17
R19
C12
C28
R22
R25
R21
CHANNEL3
RS3
R63
R64
C63
C45
R77
R79
R65
CHANNEL4
RS4
R66
R67
C57
C48
R53
R54
R55
Ref. Sch.
Ref. Sch.
Ref. Sch.
Ref. Sch.
Open
Open
Open
Open
0Ω Copper
Open
Open
Ref. Sch.
Current Sense Resistor (Default)
Inductor DCR Current Sensing
Calculated Value from Data Sheet
0Ω
A
IOUT
+
V VOUT
LOAD
–
A
IIN
+
+
VIN SUPPLY
V
–
VIN
–
Figure 1. Proper Measurement Equipment Setup
dc2190afa
3
DEMO MANUAL
DC2190A-A/DC2190A-B
QUICK START PROCEDURE
+
–
COUT
GND
VIN
VOUT
GND
Figure 2. Measuring Input or Output Ripple Across Terminals or Directly Across Bulk Capacitor
11
100
95
9
8
85
POWER LOSS
80
7
75
6
70
5
65
4
60
3
55
2
50
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30
IOUT (A)
POWER LOSS (W)
EFFICIENCY (%)
10
EFFICIENCY
90
1
DC2190A F03
Figure 3. Typical Efficiency vs Load Current (DC2190A-B, 2-Phase Solution, VIN = 48V)
21
100
95
18
EFFICIENCY
EFFICIENCY (%)
POWER LOSS
70
12
85
9
80
6
75
3
70
0
5
10
15
20
25
30 35
IOUT (A)
40
45
50
55
60
POWER LOSS (W)
15
90
0
DC2190A F04
Figure 3. Typical Efficiency vs Load Current (DC2190A-A, 4-Phase Solution, VIN = 48V)
4
dc2190afa
DEMO MANUAL
DC2190A-A/DC2190A-B
PARTS LIST DC2190A-A
ITEM
QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2190A-A Required Circuit Components
1
10
C1, C14, C15, C16, C17, C53, C54,
C55, C61, C75
CAP, 1812 2.2μF 10% 100V X7R
TDK C4532X7R2A225K
2
2
C2, C60
CAP, 100μF 20% 63V ELEC
SUN ELECT. 63CE100KX
3
2
C3, C49
CAP, 0805 0.1μF 10% 100V X7R
TDK C2012X7R2A104K
4
2
C4, C64
CQP, 0805 4.7μF 10% 16V X7R
AVX, 0805YC475KAT2A
4
8
C5, C32, C33, C39, C67, C78, C79, C80
CAP, 0603 0.1μF 10% 50V X7R
TDK C1608X7R1H104K
6
1
C6
CAP, 0603 470pF 10% 50V X7R
MURATA GRM188R71H471KA01D
7
1
C7
CAP, 0603 10pF 5% 50V NPO
AVX, 06035A100JAT2A
8
3
C8, C46, C62
CAP, 0603 47pF 5% 100V NPO
AVX 06031A470JAT2A
9
2
C9, C34
CAP, 0603 10nF 10% 100V X7R
AVX, 06031C103KAT2A
10
2
C11, C68
CAP, 0603 0.1μF 10% 100V X7R
MURATA GRM188R72A104KA35D
11
4
C12, C13, C57, C63
CAP, 0603 2.2pF 10% 100V NPO
AVX, 06031A2R2KAT2A
12
4
C18, C27, C59, C71
CAP, 0603 1μF 10% 16V X7R
AVX, 0603YC105KAT2A
13
4
C20, C25, C73, C76
CAP, 150μF 20% 16V ALUM
PANASONIC 16SVPC150M
14
4
C22, C23, C66, C72
CAP, 1206 10μF 10% 16V X7R
AVX, 1206YC106KAT2A
15
4
C30, C31, C51, C58
CAP, 0603 0.22μF 10% 25V X5R
AVX 06033D224KAT2A
16
2
C35, C36
CAP, 0603 1nF 10% 25V X7R
AVX 06033C102KAT2A
17
1
C37
CAP, 0603 100pF 10% 100V NPO
AVX, 06031A101KAT2A
18
2
C40, C100
CAP, 33μF 20% 63V ELEC
SUN ELECT., 63HVH33M
19
1
C69
CAP, 0603 4.7nF 10% 25V X7R
AVX, 06033C472KAT2A
20
27
R7, R12, R16, R17, R18, R27,
R28, R44, R45, R49, R51, R57,
R60, R64, R67, R74, R76, R80,
R81, C81, R82, C82, R83, R84,
R85, R89, R90
RES, 0603 0Ω JUMPER
VISHAY CRCW06030000Z0EA
21
4
L1, L2, L5, L6
IND, 10μH
COILCRAFT SER2918H-103
22
8
Q1, Q2, Q3, Q4, Q17, Q20, Q22, Q24
XSTR, MOSFET N-CH 80V 100A TDSON-8
INFINEON BSC123N08NS3 G
23
8
Q5, Q6, Q7, Q8, Q18, Q19, Q21, Q23
XSTR, MOSFET N-CH 80V 100A TDSON-8
INFINEON BSC042NE7NS3
24
4
RS1, RS2, RS3, RS4
RES, 2010 0.003Ω 1% 1W
VISHAY WSL20103L000FEA18
25
2
R_PRG1, R_PRG
RES, 0603 29.4k 1% 1/10W
VISHAY, CRCW060329K4FKEA
26
2
R1, R62
RES. 1206 2.2Ω 1% 1/4W
VISHAY CRCW12062R20FKEA
27
1
R8
RES, 0603 100k 5% 1/10W
VISHAY CRCW0603100KJNEA
28
1
R9
RES, 0805 499k 1% 1/8W
VISHAY, CRCW0805499KFKEA
29
3
R10, R33, R37
RES, 0603 10Ω 1% 1/10W
VISHAY CRCW060310R0FKEA
30
1
R11
RES, 0603 35.7k 1% 1/10W
VISHAY CRCW060335K7FKEA
31
1
R14
RES, 0603 1.5k 1% 1/10W
VISHAY CRCW06031K50FKEA
32
4
R19, R20, R63, R66
RES, 0603 100Ω 5% 1/10W
VISHAY, CRCW0603100RJNEA
33
2
R30, R48
RES, 0603 90.9k 1% 1/10W
VISHAY CRCW060390K9FKEA
34
5
R32, R35, R38, R39, R40
RES, 0603 10k 1% 1/10W
VISHAY CRCW060310K0FKEA
35
4
R34, R43, R52, R86
RES, 2010 0.001Ω1% 1W
VISHAY, WSL20101L000FEA18
36
2
R36, R41
RES, 0603 392k 1% 1/10W
VISHAY CRCW0603392KFKEA
dc2190afa
5
DEMO MANUAL
DC2190A-A/DC2190A-B
PARTS LIST DC2190A-A
ITEM
PART DESCRIPTION
MANUFACTURER/PART NUMBER
37
QTY REFERENCE
1
R42
RES, 0603 3.3k 5% 1/10W
VISHAY CRCW06033K30JNEA
38
2
U1, U4
IC, DUAL OUTPUT HIGH VOLTAGE STEP-DOWN CONVERTER
LINEAR TECH. LTC3892EFE-1#PBF
39
0
C70
CAP, 100μF 20% 63V ELEC OPTION
SUN ELECT., 63CE100KX OPTION
DC2190A-A Additional Demo Board Circuit Components
40
1
U2
IC, HIGH VOLTAGE BIDIRECTIONAL CURRENT SENSE AMP
LINEAR TECH. LT1999CS8-10#PBF
41
1
U5
IC, OP AMP, COMPARATOR AND REFERENCE
LINEAR TECH. LTC1541CMS8#PBF
42
1
U6
IC, DUAL AND QUAD, SINGLE SUPPLY, PRECISION OP AMPS
LINEAR TECH. LT2078CS8#PBF
43
1
U7
IC, LOW POWER DUAL COMPARATORS WITH REFERENCE
LINEAR TECH. LTC1843CS8#PBF
44
1
U8
IC, MULTIPHASE OSCILLATOR WITH SPREAD
SPECTRUM FREQUENCY MODULATION
LINEAR TECH. LTC6902CMS#PBF
45
0
Q9, Q10, Q11, Q12, Q13, Q14,
Q15, Q16, Q25, Q26, Q27, Q28,
Q29, Q30, Q31, Q32
XSTR, MOSFET OPTION
OPTION
46
1
Q33
XSTR, SMALL SIGNAL, NPN
DIODES INC. MMBT3904
47
0
Q34, R50, R59, R61
DO NOT STUFF
NONE
48
0
R2, R3, R4, R5, R13, R21, R22,
R23, R24, R25, R26, R29, R31,
R46, R53, R54, R55, R56, R65,
R71, R72, R73, R77, R78, R79
RES, 0603 OPTION
OPTION
49
0
D1, D2, D3
DIODE, SCHOTTKY 30V, 100mA OPTION
CENTRAL SEMI CMDSH-3-TR OPTION
50
1
D4
DIODE, ZENER 5.1V
DIODES INC. MMSZ5231BS
51
0
L3, L4, L7, L8
IND, OPTION
OPTION
52
0
C28, C29, C45, C48, C50, C52,
C56, C65, C77, C88, C89, C90,
C91, C92, C93, C94, C95, C96,
C97, C98, C99
CAP, 0603 OPTION
OPTION
53
0
C10, C19, C26, C38, C83, C84,
C85, C86, C87
CAP, 1210 OPTION
OPTION
54
0
C21, C24, C41, C42, C43, C44,
C47, C74
CAP, 150μF 20% 16V ALUM OPTION
PANASONIC 16SVPC150M OPTION
55
0
R47, R58
RES, 0603 10k 1% 1/10W OPTION
VISHAY CRCW060310K0FKEA OPTION
DC2190A-A Hardware
56
5
E1, E2, E3, E4, E5
TURRET
MIIL-MAX 2501-2-00-80-00-00-07-0
57
1
JP1
HEADER, 3-PIN, DBL ROW 2mm
SULLINS, NRPN032PAEN-RC
58
2
JP2, JP3
HEADER, 2mm, 3-PIN
SULLINS, NRPN031PAEN-RC
59
10
J1, J2, J3, J4, J5, J7, J8, J9, J12,
J13
STUD, TESTPIN
PEM KFH-032-10
60
10
LUG RING, #10
KEYSTONE 8205
61
3
SHUNT, 2mm
SAMTEC 2SN-BK-G
62
10
WASHER, #10 TIN PLATED BRASS
ANY #10 EXT BZ TN
STANDOFF, SNAP ON
KEYSTONE_8831
NUT, BRASS 10-32
ANY #10-32
63
4
64
20
6
XJP1, XJP2, XJP3
MH1, MH2, MH3, MH4
dc2190afa
DEMO MANUAL
DC2190A-A/DC2190A-B
PARTS LIST DC2190A-B
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2190A-B Required Circuit Components
1
5
C1, C14, C15, C16, C17
CAP, 1812 2.2μF 10% 100V X7R
TDK C4532X7R2A225K
2
1
C2
CAP, 100μF 20% 63V ELEC
SUN ELECT. 63CE100KX
3
1
C3
CAP, 0805 0.1μF 10% 100V X7R
TDK C2012X7R2A104K
4
1
C4
CQP, 0805 4.7μF 10% 16V X7R
AVX, 0805YC475KAT2A
5
7
C5, C32, C33, C39, C78, C79, C80
CAP, 0603 0.1μF 10% 50V X7R
TDK C1608X7R1H104K
6
1
C6
CAP, 0603 470pF 10% 50V X7R
MURATA GRM188R71H471KA01D
7
1
C7
CAP, 0603 15pF 5% 50V C0G
AVX 06035A150JAT4A
8
1
C8
CAP, 0603 47pF 5% 100V NPO
AVX 06031A470JAT2A
9
2
C9, C34
CAP, 0603 10nF 10% 100V X7R
AVX, 06031C103KAT2A
10
1
C11
CAP, 0603 0.1μF 10% 100V X7R
MURATA GRM188R72A104KA35D
11
2
C12, C13
CAP, 0603 2.2pF 10% 100V NPO
AVX, 06031A2R2KAT2A
12
2
C18, C27
CAP, 0603 1μF 10% 16V X7R
AVX, 0603YC105KAT2A
13
2
C20, C25
CAP, 150μF 20% 16V ALUM
PANASONIC 16SVPC150M
14
2
C22, C23
CAP, 1206 10μF 10% 16V X7R
AVX, 1206YC106KAT2A
15
2
C30, C31
CAP, 0603 0.22μF 10% 25V X5R
AVX 06033D224KAT2A
16
2
C35, C36
CAP, 0603 1nF 10% 25V X7R
AVX 06033C102KAT2A
17
1
C37
CAP, 0603 100pF 10% 100V NPO
AVX, 06031A101KAT2A
18
2
C40, C100
CAP, 33μF 20% 63V ELEC
SUN ELECT., 63HVH33M
19
1
C69
CAP, 0603 4.7nF 10% 25V X7R
AVX, 06033C472KAT2A
20
19
R7, R12, R16, R17, R18, R27, R28,
R44, R45, R49, R81, C81, R82,
C82, R83, R84, R85, R89, R90
RES, 0603 0Ω JUMPER
VISHAY CRCW06030000Z0EA
21
4
Q1, Q2, Q3, Q4
XSTR, MOSFET N-CH 80V 100A TDSON-8
INFINEON BSC123N08NS3G
22
4
Q5, Q6, Q7, Q8
XSTR, MOSFET N-CH 80V 100A TDSON-8
INFINEON BSC042NE7NS3
33
2
L1, L2
IND, 10μH
COILCRAFT SER2918H-103
24
2
RS1, RS2
RES, 2010 0.003Ω 1% 1W
VISHAY WSL20103L000FEA18
25
1
R_PRG
RES, 0603 29.4k 1% 1/10W
VISHAY, CRCW060329K4FKEA
26
1
R1
RES. 1206 2.2Ω 1% 1/4W
VISHAY CRCW12062R20FKEA
27
1
R8
RES, 0603 100k 5% 1/10W
VISHAY CRCW0603100KJNEA
28
1
R9
RES, 0805 499k 1% 1/8W
VISHAY, CRCW0805499KFKEA
29
3
R10, R33, R37
RES, 0603 10Ω 1% 1/10W
VISHAY CRCW060310R0FKEA
30
1
R11
RES, 0603 35.7k 1% 1/10W
VISHAY CRCW060335K7FKEA
31
1
R14
RES, 0603 4.02k 1% 1/10W
VISHAY CRCW06034K02FKEA
32
2
R19, R20
RES, 0603 100Ω 5% 1/10W
VISHAY, CRCW0603100RJNEA
33
1
R30
RES, 0603 90.9k 1% 1/10W
VISHAY CRCW060390K9FKEA
34
5
R32, R35, R38, R39, R40
RES, 0603 10k 1% 1/10W
VISHAY CRCW060310K0FKEA
35
4
R34, R43, R52, R86
RES, 2010 0.001Ω 1% 1W
VISHAY, WSL20101L000FEA18
36
2
R36, R41
RES, 0603 392k 1% 1/10W
VISHAY CRCW0603392KFKEA
37
1
R42
RES, 0603 3.3k 5% 1/10W
VISHAY CRCW06033K30JNEA
38
1
U1
IC, DUAL OUTPUT HIGH VOLTAGE STEP-DOWN
CONVERTER
LINEAR TECH. LTC3892EFE-1#PBF
dc2190afa
7
DEMO MANUAL
DC2190A-A/DC2190A-B
PARTS LIST DC2190A-B
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2190A-B Additional Demo Board Circuit Components
39
0
C10, C19, C26, C38, C83, C84, C85, CAP, 1210 OPTION
C86, C87
OPTION
40
0
C28, C29, C56, C77, C88, C89, C90, CAP, 0603 OPTION
C91, C92, C93
OPTION
41
0
L3, L4, L7, L8
IND, OPTION
OPTION
42
0
D1, D2, D3
DIODE, SCHOTTKY 30V, 100mA OPTION
CENTRAL SEMI CMDSH-3-TR OPTION
43
1
D4
DIODE, ZENER 5.1V
DIODES INC. MMSZ5231BS
44
0
C21, C24, C41, C42, C43, C44
CAP, 150μF 20% 16V ALUM OPTION
PANASONIC 16SVPC150M OPTION
45
0
Q9, Q10, Q11, Q12, Q13, Q14, Q15,
Q16, Q25, Q26, Q27, Q28, Q29,
Q30, Q31, Q32
XSTR, MOSFET OPTION
OPTION
46
1
Q33
XSTR, SMALL SIGNAL, NPN
DIODES INC. MMBT3904-7-F
47
0
Q34, R50, R59, R61
DO NOT STUFF
NONE
48
0
R2, R3, R4, R5, R13, R21, R22,
RES, 0603 OPTION
R23, R24, R25, R26, R29, R31, R46
OPTION
49
0
R47, R58
RES, 0603 10k 1% 1/10W OPTION
VISHAY CRCW060310K0FKEA OPTION
50
1
U2
IC, HIGH VOLTAGE BIDIRECTIONAL CURRENT
SENSE AMP
LINEAR TECH. LT1999CS8-10#PBF
51
1
U5
IC, MICROPOWER OP AMP, COMPARATOR AND
REFERENCE
LINEAR TECH. LTC1541CMS8#PBF
52
1
U6
IC, DUAL AND QUAD, SINGLE SUPPLY,
PRECISION OP AMPS
LINEAR TECH. LT2078CS8#PBF
53
1
U7
IC, LOW POWER DUAL COMPARATORS WITH
REFERENCE
LINEAR TECH. LTC1843CS8#PBF
54
1
U8
IC, MULTIPHASE OSCILLATOR W/SPREAD
SPECTRUM FREQUENCY MODULATION
LINEAR TECH. LTC6902CMS#PBF
DC2190A-B Hardware
55
7
WASHER, #10 TIN PLATED BRASS
ANY #10 EXT BZ TN
56
2
XJP1, XJP2
SHUNT, 2mm
SAMTEC 2SN-BK-G
57
4
MH1, MH2, MH3, MH4
STANDOFF, SNAP ON
KEYSTONE_8831
58
14
NUT, BRASS 10-32
ANY #10-32
59
5
E1, E2, E3, E4, E5
TURRET
MIIL-MAX 2501-2-00-80-00-00-07-0
60
1
JP1
HEADER, 3-PIN, DBL ROW 2mm
SULLINS, NRPN032PAEN-RC
61
1
JP2
HEADER, 2mm, 3-PIN
SULLINS, NRPN031PAEN-RC
62
7
J1, J2, J3, J4, J5, J7, J8
STUD, TESTPIN
PEM KFH-032-10
63
7
LUG RING, #10
KEYSTONE 8205
8
dc2190afa
1
2
3
4
VIN
J1
E3
J2
E4
ITH3
SHT 2
J5
C89
OPT
OPT
1uF
C18
+
OPT
C20
A
OPT
C91
150uF
+
+
OPT
C100
+
33uF
63V
OPT
C93
10uF
C22
3
2
1
S2OPT
C28
S2+
R25 OPT
R21
OPT
SER2918H-103
L1 10uH
VIN
OPT
R46
R16 0
R13
OPT
Q1
BSC123N08NS3 G
JP2
RUN
SNS2+
OFF
ON
C56
OPT
RS2 3m
R7
0
VOUT
C40
+
33uF
63V
OPT
R3
R5
OPT
C92
OPT
C21
RUN1
TR/SS1
R4
OPT
VIN
C2
100uF
63V
INTVCC
C90
VOUT
0 R84
R83 0
R82 0
R81 0
R89 0
R90 0
C88
VIN
GND
12V / 60A
VOUT
RUN1
SHT 3
J3
RUN3
SHT 2
SHT 2 TR/SS3
VFB3
SHT 2
SHT 2 EXTVCC
EXTVCC
SHT 2 DRVUV
DRVUV
GND
C1
2.2uF
100V
5
OPT
R22
3
2
1
4
B
C16
2.2uF
100V
Q5
BSC042NE7NS3
4
B
R1
13
12
22
14
TG2
BG2
SHT 3
SHT 3
SHT 3 SNS2+
SW2
SHT 3
BOOST2
SW1
TG1
BG1
SNS1+
BG2
SNS2+
INTVCC
R29
OPT
BOOST1
BG1
SW1
TG1
SENSE1+
SENSE1-
RUN1
TK/SS1
ITH1
VFB1
INTVCC
DRVCC
ITH1
C
SHT 3
SHT 3
SHT 3
SNS1+ SHT 3
BG1
TG1
SW1
R30
90.9k
1%
R28
0
C31
0.22uF
JP1
MODE
6
4
2
VOUT
S1+
C29
OPT
S1-
R26 OPT
R24
SER2918H-103
CUSTOMER NOTICE
OPT
Q8
BSC042NE7NS3
R23
OPT
L2 10uH
Q4
BSC123N08NS3 G
SNS1+
10 1%
R10
PH1
R8
100k
INTVCC
D
OPT
D
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
C24
OPT
APPROVALS
C23
10uF
C77
RS1 3m
SCALE = NONE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. ` \
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. DING L.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
4
4
VIN
10pF
C7
499k 1%
R9
MODE SHT 2
5
3
1
C17
2.2uF
100V
RUN1
Q6
BSC042NE7NS3
4
BG1
25
SW1
26
24
C15 2.2uF
R20 100
Q3
BSC123N08NS3 G
4
TG1
C13
2.2pF
R18 0
27
3 S1+
4
S1-
C11 0.1uF
28 TR/SS1
8
1%
35.7k
R11
BURST
INT. SYNC
EXT. SYNC/P.S.
INTVCC
10nF
C9
0.1uF
C5
470pF
C6
1.5k 1%
R14
VFB1
1
16V
C4 4.7uF
2
7
21
6
29.4k
R_PRG
OPT
R2
MODE/PLLIN
TG2
R27
0
BG2
SW2
TG2
SENSE2+
SENSE2-
RUN2
TK/SS2
ITH2
VFB2
EXTVCC
DRVUV
LTC3892EFE-1
U1
C
INTVCC
SW2
Q7
BSC042NE7NS3
C30
0.22uF
20
BG2
4
18
SW2
19
17
11
10
9
Q2
BSC123N08NS3 G
4
TG2
S2+
S2-
RUN2
TR/SS2 16
47pF
ITH2
C8
VFB2
C3
0.1uF
2.2 1%
C12
2.2pF
R45 0
R12 0
C14 2.2uF
R19 100
R17 0
ITH1
VFB1
R44 0
VIN
23
VBIAS
5
FREQ
16V UP TO 55V
5
3
2
1
5
3
2
1
5
3
2
1
GND
29
DRVSET
15
5
1
2
3
5
1
2
3
5
1
2
3
5
1
2
3
A
150uF
C25
+
C27
VOUT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
SHT 2
12V / 60A
J4
ITH
DATE:
SIZE
E
Friday, November 21, 2014
SHEET 1
OF 3
HIGH POWER 60V, 4-PHASE SYNCHRONOUS
STEP-DOWN SUPPLY
IC NO.
REV.
LTC3892EFE-1
N/A PCB NO.
2
DEMO CIRCUIT 2190A-A
LTC Confidential-For Customer Use Only
TECHNOLOGY Fax: (408)434-0507
1uF
TITLE: SCHEMATIC
+
VOUT
GND
SYNC
VFB1 SHT 3
E2
E1
E
1
2
3
4
DEMO MANUAL
DC2190A-A/DC2190A-B
SCHEMATIC DIAGRAM
dc2190afa
9
1
2
3
ITH3
SHT 1,3
VOUT
GND
OPT
OPT
A
C95
1uF
C59
VOUT
C94
VIN
J13
12V / 60A
J12
SHT 1,3 RUN3
SHT 1,3 TR/SS3
VFB3
SHT 1,3
SHT 1,3 EXTVCC
C76
OPT
C96
150uF
+
+
OPT
C97
OPT
C74
OPT
C98
10uF
OPT
C99
RS4 3m
C66
OPT
C50
S4OPT
C48
4
B
4
C55
2.2uF
100V
VIN
+
+
C70
13
12
22
14
4
TG3
BG3
SHT 3
SHT 3
SHT 3 SNS3+
SW3
SHT 3
Q18
BSC042NE7NS3
BOOST2
BG2
SW2
TG2
SENSE2+
SENSE2-
RUN2
TK/SS2
ITH2
VFB2
EXTVCC
DRVUV
LTC3892EFE-1
U4
S3-
47pF
C62
OPT
C65
0.1uF
C67
TG4
BG4
SNS4+
BG3
SNS3+
R48
90.9k
1%
R60
0
SHT 3
SHT 3
SHT 3
SNS4+ SHT 3
BG4
TG4
SW4
BSC042NE7NS3
Q23
4
BG3
C51
0.22uF
SW3
26
S3+
S3-
BSC042NE7NS3
OPT
C45
R79 OPT
OPT
R65
SER2918H-103
Q19
R77
OPT
L6 10uH
Q17
BSC123N08NS3 G
D
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
4
SNS3+
D
OPT
10uF
C72
APPROVALS
RS3 3m
C52
SCALE = NONE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. ` \
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. DING L.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
4
C54
2.2uF
100V
VIN
INTVCC2
INT.
EXT./P.S.
RUN3
VFB3
JP3
CLK
C75 2.2uF
24
25
3
2
1
R63 100
Q24
BSC123N08NS3 G
4
TG3
C63
2.2pF
R64 0
27
3 S3+
4
8
SW4
C
OPT
R72
ITH3
16V
C64 4.7uF
C68 0.1uF
28 TR/SS3
1
2
7
21
6
TG3
INTVCC2
R78
OPT
BOOST1
BG1
SW1
TG1
SENSE1+
SENSE1-
RUN1
TK/SS1
ITH1
VFB1
INTVCC
DRVCC
MODE/PLLIN
29.4k
R_PRG1
OPT
R56
INTVCC2
C
SW3
R80
0
19
20
BG4
C58
0.22uF
18
SW4
11
10
9
17
S4+
S4-
RUN4
TR/SS4 16
47pF
ITH4
C46
VFB4
C49
0.1uF
Q22
BSC123N08NS3 G
4
TG4
C61 2.2uF
R62
2.2 1%
C57
2.2pF
R57 0
R76 0
R51 0
OPT
R66 100
R67 0
TR/SS3
ITH3
VFB3
C60
100uF
63V
23
VBIAS
5
FREQ
B
BSC042NE7NS3
Q21
S4+
R54 OPT
SER2918H-103
R53
R55
OPT
OPT
L5 10uH
VIN
OPT
R73
R74 0
Q20
BSC123N08NS3 G
SNS4+
R71
OPT
RUN3
5
3
2
1
SHT 1,3 DRVUV
C53
2.2uF
100V
5
3
2
1
5
3
2
1
5
3
2
1
GND
29
DRVSET
15
5
1
2
3
5
1
2
3
5
1
2
3
5
10
1
2
3
4
A
OPT
C47
+
150uF
C73
C71
VOUT
12V / 60A
J9
SHT3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
DATE:
SIZE
E
Monday, November 24, 2014
SHEET 2
OF 3
HIGH POWER 60V, 4-PHASE SYNCHRONOUS
STEP-DOWN SUPPLY
IC NO.
REV.
LTC3892EFE-1
N/A
2
DEMO CIRCUIT 2190A-A
LTC Confidential-For Customer Use Only
TECHNOLOGY Fax: (408)434-0507
1uF
TITLE: SCHEMATIC
+
VOUT
PH2
MODE SHT 1
E
1
2
3
4
DEMO MANUAL
DC2190A-A/DC2190A-B
SCHEMATIC DIAGRAM
dc2190afa
1
2
3
4
OPT
C10
OPT
1210
C19
OPT
1210
VOUT
OPT
+
C42
1m
1m
+
C26
OPT
1210
OPT
C43
OPT
5
1m
3
2
1
+
A
R33
C36
1nF
10 1%
R37
OPT
C44
+
C84
OPT
1210
Vcontrol
OPT
5
Q9
OPT
4
Q12
OPT
4
3
2
0.1uF
C33
-
+
VCC
C86
OPT
1210
SW4
SW3
SW2
SW1
C39
0.1uF
L7 OPT
L8 OPT
L4 OPT
L3 OPT
C87
OPT
1210
100pF
C37
U2
LT1999CS8-10
R35
7
10k 1%
VCC
OPT
R31
INTVCC
C34
VCC
-
+
SHT1
SHT2
B
SNS4+ SHT2
SNS3+
LT2078CS8
U6A
1
Q15
OPT
4
Q16
OPT
4
10nF
SNS2+ SHT1
SNS1+
2
3
0.1uF
C32
10k 1%
R32
C35 1nF
CHARGE/DISCHARGING
CURRENT CONTROL (OPTIONAL)
C85
OPT
1210
4 Q11
OPT
4
10 1%
C38
C83
OPT
1210
R52 R86 R43 R34
1m
BG2
SHT1
VOUT
TG2
SHT1
VOUT
E5
J8
J7
C41
REFIN
VBATT
VBATT
VREF
SW2
SHT1
Q10
B
5
1
2
3
5
1
2
3
OPT
D1
4
4
Q13
OPT
VIN
5
R40
10k
1%
R38
10k
1%
R36
392k
1%
VIN
ITH SHT1
0
R85
D4
5.1V
HYST
REF
VCC
7
5
6
C
LTC1843CS8
INB-
INA+
V-
8
R39
10k 1%
Q26
R41
392k
1%
VIN
OPT
4 Q27
Q25
OPT
4
Q28
OPT
4
D
U8
0
OUT2
OUT1
PH
DIV
V+
PH2 SHT2
C78
0.1uF
4
4
Q29
OPT
Q30
OPT
BG3 SHT2
TG3 SHT2
SW3 SHT2
4
3
2
1
VCC
U5
VSS
COMPIN+
REF
LTC1541CMS8
AMPIN+
AMPIN- COMPOUT
AMPOUT
5
6
7
8
C79
VREF
0.1uF
VCC
C69
4.7nF
1
D
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
SCALE = NONE
APPROVALS
LTC Confidential-For Customer Use Only
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
TECHNOLOGY Fax: (408)434-0507
Vcontrol
DATE:
SIZE
E
Monday, November 24, 2014
SHEET 3
OF 3
HIGH POWER 60V, 4-PHASE SYNCHRONOUS
STEP-DOWN SUPPLY
IC NO.
REV.
LTC3892EFE-1
N/A
2
DEMO CIRCUIT 2190A-A
TITLE: SCHEMATIC
VFB1 SHT 1
Q34
DO NOT STUFF
THIS PAGE IS FOR BI-DIRECTIONAL CHARGER ONLY.
R58
OPT
5
4
3
2
1
INTVCC
Q31
OPT
4
Q32
OPT
4
VIN
E
CHARGE/DISCHARGE MODE FB SWITCH OVER
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. ` \
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. DING L.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
OPT
D3
LTC6902CMS
OUT3
OUT4
GND
MOD
SET
C82
6
7
8
9
10
3.3k
R42
ON BOARD PWM GENERATOR
OPT
4
RUN1 SHT 1
C80
0.1uF
0
C81
VCC
0
OUTA OUTB
U7
4
3
2
1
R61
DO NOT STUFF
R49
INPUT UV/OV PROTECTION
SHT1 PH1
INTVCC
Q33
MMBT3904
R59
DO NOT STUFF
VIN
D2
OPT
BG4
SHT2
SHT1
BG1
R47
OPT
TG4
SHT2
SHT1
TG1
VIN OPT
SW4
SHT2
C
SW1 SHT1
R50
DO NOT STUFF
Q14
OPT
1
2
3
5
1
2
3
5
3
2
1
VIN
5
3
2
1
5
3
2
1
5
3
2
1
5
3
2
1
5
1
2
3
5
1
2
3
5
1
2
3
5
1
2
3
3
2
1
5
3
2
1
1
4
5
6
8
8
4
3
2
A
1
2
3
4
DEMO MANUAL
DC2190A-A/DC2190A-B
SCHEMATIC DIAGRAM
11
dc2190afa
1
2
3
4
VIN
J1
E3
J2
E4
ITH3
SHT 2
J5
C89
OPT
OPT
1uF
C18
+
OPT
C20
A
OPT
C91
150uF
+
+
OPT
C100
+
33uF
63V
OPT
C93
10uF
C22
3
2
1
S2OPT
C28
S2+
R25 OPT
R21
OPT
SER2918H-103
L1 10uH
VIN
OPT
R46
R16 0
R13
OPT
Q1
BSC123N08NS3 G
JP2
RUN
SNS2+
OFF
ON
C56
OPT
RS2 3m
R7
0
VOUT
C40
+
33uF
63V
OPT
R3
R5
OPT
C92
OPT
C21
RUN1
TR/SS1
R4
OPT
VIN
C2
100uF
63V
INTVCC
C90
VOUT
0 R84
R83 0
R82 0
R81 0
R89 0
R90 0
C88
VIN
GND
12V / 60A
VOUT
RUN1
J3
RUN3
SHT 2
SHT 3
SHT 2 TR/SS3
VFB3
SHT 2
SHT 2 EXTVCC
EXTVCC
SHT 2 DRVUV
DRVUV
GND
C1
2.2uF
100V
5
OPT
R22
3
2
1
4
B
C16
2.2uF
100V
Q5
BSC042NE7NS3
4
B
R1
13
12
22
14
TG2
BG2
SHT 3
SHT 3
SHT 3 SNS2+
SW2
SHT 3
BOOST2
SW1
TG1
BG1
SNS1+
BG2
SNS2+
INTVCC
R29
OPT
BOOST1
BG1
SW1
TG1
SENSE1+
SENSE1-
RUN1
TK/SS1
ITH1
VFB1
INTVCC
DRVCC
ITH1
1
R28
0
SHT 3
SHT 3
SHT 3
SNS1+ SHT 3
BG1
TG1
SW1
C31
0.22uF
JP1
MODE
6
4
2
VOUT
S1+
C29
S1-
R26 OPT
OPT
R24
SER2918H-103
CUSTOMER NOTICE
OPT
Q8
BSC042NE7NS3
R23
OPT
L2 10uH
Q4
BSC123N08NS3 G
SNS1+
10 1%
R10
PH1
R8
100k
INTVCC
D
OPT
D
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
C24
OPT
APPROVALS
C23
10uF
C77
RS1 3m
SCALE = NONE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. ` \
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. DING L.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
4
4
VIN
10pF
C7
499k 1%
R9
MODE SHT 2
5
3
1
C17
2.2uF
100V
RUN1
Q6
BSC042NE7NS3
4
BG1
24
25
SW1
26
C15 2.2uF
R20 100
Q3
BSC123N08NS3 G
4
TG1
C13
2.2pF
R18 0
27
R30
90.9k
1%
C
S1-
3 S1+
4
8
C11 0.1uF
28 TR/SS1
1%
35.7k
R11
BURST
INT. SYNC
EXT. SYNC/P.S.
INTVCC
10nF
C9
0.1uF
C5
470pF
C6
1.5k 1%
R14
VFB1
16V
C4 4.7uF
2
7
21
6
29.4k
R_PRG
OPT
R2
MODE/PLLIN
TG2
R27
0
BG2
SW2
TG2
SENSE2+
SENSE2-
RUN2
TK/SS2
ITH2
VFB2
EXTVCC
DRVUV
LTC3892EFE-1
U1
C
INTVCC
SW2
Q7
BSC042NE7NS3
4
20
BG2
C30
0.22uF
18
SW2
19
17
11
10
9
Q2
BSC123N08NS3 G
4
TG2
S2+
S2-
RUN2
TR/SS2 16
47pF
ITH2
C8
VFB2
C3
0.1uF
2.2 1%
C12
2.2pF
R45 0
R12 0
R44 0
C14 2.2uF
R19 100
R17 0
ITH1
VFB1
VIN
23
VBIAS
5
FREQ
16V UP TO 55V
5
3
2
1
5
3
2
1
5
3
2
1
GND
29
DRVSET
15
5
1
2
3
5
1
2
3
5
1
2
3
5
12
1
2
3
A
C25
150uF
+
C27
VOUT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
SHT 2
12V / 60A
J4
ITH
DATE:
SIZE
E
Monday, November 24, 2014
SHEET 1
OF 2
HIGH POWER 60V, 4-PHASE SYNCHRONOUS
STEP-DOWN SUPPLY
IC NO.
REV.
LTC3892EFE-1
N/A PCB NO.
2
DEMO CIRCUIT 2190A-B
LTC Confidential-For Customer Use Only
TECHNOLOGY Fax: (408)434-0507
1uF
TITLE: SCHEMATIC
+
VOUT
GND
SYNC
VFB1 SHT 3
E2
E1
E
1
2
3
4
DEMO MANUAL
DC2190A-A/DC2190A-B
SCHEMATIC DIAGRAM
dc2190afa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1
2
3
4
C10
OPT
1210
C42
OPT
C19
OPT
1210
VOUT
OPT
+
1m
1m
+
C26
OPT
1210
OPT
C43
OPT
5
1m
3
2
1
+
A
R33
C36
1nF
10 1%
R37
OPT
C44
+
C84
OPT
1210
Vcontrol
OPT
5
Q9
OPT
4
Q12
OPT
4
3
2
0.1uF
C33
-
+
VCC
C86
OPT
1210
SW4
SW3
SW2
SW1
C39
0.1uF
L7 OPT
L8 OPT
L4 OPT
L3 OPT
C87
OPT
1210
100pF
C37
U2
LT1999CS8-10
R35
7
10k 1%
VCC
OPT
R31
INTVCC
10nF
VCC
-
+
SHT1
SHT2
B
SNS4+ SHT2
SNS3+
LT2078CS8
U6A
1
Q15
OPT
4
Q16
OPT
4
C34
SNS2+ SHT1
SNS1+
2
3
0.1uF
C32
10k 1%
R32
C35 1nF
CHARGE/DISCHARGING
CURRENT CONTROL (OPTIONAL)
C85
OPT
1210
4 Q11
OPT
4
10 1%
C38
C83
OPT
1210
R52 R86 R43 R34
1m
BG2
SHT1
VOUT
TG2
SHT1
VOUT
E5
J8
J7
C41
REFIN
VBATT
VBATT
VREF
SW2
SHT1
Q10
B
5
1
2
3
5
1
2
3
OPT
D1
4
4
Q13
OPT
VIN
5
R40
10k
1%
R38
10k
1%
R36
392k
1%
VIN
ITH SHT1
0
R85
D4
5.1V
HYST
REF
VCC
7
5
6
C
LTC1843CS8
INB-
INA+
V-
8
R39
10k 1%
Q26
R41
392k
1%
VIN
OPT
4 Q27
Q25
OPT
4
Q28
OPT
4
D
U8
0
3.3k
OUT2
OUT1
PH
DIV
V+
PH2 SHT2
C78
0.1uF
4
4
Q29
OPT
VIN
Q30
OPT
BG3 SHT2
TG3 SHT2
SW3 SHT2
4
3
2
1
VCC
U5
VSS
COMPIN+
REF
LTC1541CMS8
AMPIN+
AMPIN- COMPOUT
AMPOUT
5
6
7
8
C79
VREF
0.1uF
VCC
C69
4.7nF
1
D
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
SCALE = NONE
APPROVALS
DATE:
SIZE
E
Monday, November 24, 2014
SHEET 2
OF 2
HIGH POWER 60V, 4-PHASE SYNCHRONOUS
STEP-DOWN SUPPLY
IC NO.
REV.
LTC3892EFE-1
N/A
2
DEMO CIRCUIT 2190A-B
TITLE: SCHEMATIC
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
Vcontrol
Q34
DO NOT STUFF
VFB1 SHT 1
CHARGE/DISCHARGE MODE FB SWITCH OVER
Q31
OPT
4
Q32
OPT
4
E
THIS PAGE IS FOR BI-DIRECTIONAL CHARGER ONLY.
R58
OPT
5
4
3
2
1
INTVCC
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. ` \
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. DING L.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
OPT
D3
LTC6902CMS
OUT3
OUT4
GND
MOD
SET
C82
6
7
8
9
10
R42
ON BOARD PWM GENERATOR
OPT
4
RUN1 SHT 1
C80
0.1uF
0
C81
VCC
0
OUTA OUTB
U7
4
3
2
1
R61
DO NOT STUFF
R49
INPUT UV/OV PROTECTION
SHT1 PH1
INTVCC
Q33
MMBT3904
R59
DO NOT STUFF
VIN
D2
OPT
BG4
SHT2
SHT1
BG1
R47
OPT
TG4
SHT2
SHT1
TG1
VIN OPT
SW4
SHT2
C
SW1 SHT1
R50
DO NOT STUFF
Q14
OPT
1
2
3
5
1
2
3
5
3
2
1
VIN
5
3
2
1
5
3
2
1
5
3
2
1
5
3
2
1
5
1
2
3
5
1
2
3
5
1
2
3
5
1
2
3
3
2
1
5
3
2
1
1
4
5
6
8
8
4
3
2
A
1
2
3
4
DEMO MANUAL
DC2190A-A/DC2190A-B
SCHEMATIC DIAGRAM
dc2190afa
13
DEMO MANUAL
DC2190A-A/DC2190A-B
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
14 Linear Technology Corporation
dc2190afa
LT 0516 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2015
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