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DEMO MANUAL DC823B-B
DESCRIPTION
LTM4600HV: 28V, 10A Step-Down Power
µModule® Regulator
Demonstration circuit DC823B-B features the LTM®4600HVEV, a 10A high efficiency, high density switch mode step-down power module. The input voltage is from 4.5V to 28V. The output voltage is programmable from 0.6V to 5V. The rated load current is 10A, while derating is necessary for different VIN, VOUT, and thermal conditions. Integrated input and output filters enable a simple PCB layout. Only bulk input and output capacitors are needed.
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
BOARD PHOTO
The LTM4600HV data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC823B-B.
Design files for this circuit board are available at http://www.linear.com/demo
(TA = 25°C)
PARAMETER TEST CONDITION VALUE
Input Voltage Range 4.5V to 28V
Output Voltage VOUT Selectable with Jumpers (Open for 0.6V) 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
Maximum Continuous Output Current 5V to 28VIN, 1.5VOUT 10 ADC
Efficiency VIN = 24V, VOUT = 2.5V, IOUT = 10A 83%, See Figure 2
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DEMO MANUAL DC823B-B
QUICK START PROCEDURE
Figure 1. Test Set-Up of DC823B-B (EXTVCC VBIAS Supply is Optional)
Demonstration circuit DC823B-B is easy to set up to evaluate the performance of the LTM4600HVEV. Refer to Figure 1 for proper measurement equipment set-up and follow the procedure below:
1. Place jumpers in the following positions for a typical 1.5VOUT application :
FCB RUN/SS VOUT Select
CCM ON 1.5V
2. With power off, connect the input power supply, load, optional 5V bias supply and meters as shown in Figure 1. Preset the load to 0A and VIN supply to be less than 28V. The optional 5V bias supply applied to the EXTVCC pin must be off while the main VIN is turned off.
3. Turn on the power at the input. The output voltage should be 1.5V ± 2%.
4. Once the proper output voltage is established, adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency and other parameters. Output voltage ripple should be measured at J6 with a BNC cable.
5. For optional load transient test, apply an adjustable pulse signal between IOSTEP CLK and GND pins. Pulse amplitude sets the current step. The pulse signal should have very small duty cycle (<15%) to limit the thermal stress of the transient load circuit. The output transient current can be monitored at BNC connector J5 (10mV/A).
+
–
+ –V
+ –LOAD
0A TO 10A
+
–A
+–
+ –
A
+
–V
dc823ba FO1
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DEMO MANUAL DC823B-B
Figure 2. Measured Supply Efficiencies with Different VIN and VOUT
QUICK START PROCEDURE
Figure 3. Measured Load Transient Response (0A to 5A Step)
Efficiency vs Load Current with 24VIN Efficiency vs Load Current with 12VIN
LOAD CURRENT (A)0
10
EFFI
CIEN
CY (%
)
20
40
50
60
6 8 10
90
30
42 12
70
80
0.6VOUT1.2VOUT1.5VOUT2.5VOUT3.3VOUT5VOUT
dc823bb F02a LOAD CURRENT (A)0
100
EFFI
CIEN
CY (%
)20
40
50
60
6 8 10dc823bb F02b
90
30
42 12
70
80
0.6VOUT1.2VOUT1.5VOUT2.5VOUT3.3VOUT5VOUT
dc823bb F03
4dc823bbf
DEMO MANUAL DC823B-B
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 CAP, 150µF 20% 35V ALUM SANYO 35MV150WXV (now SUNCON 35ME150WXV)
2 2 C5, C2 CAP, 1206 10µF 20% 35V X5R TAIYO YUDEN GMK316BJ106ML-T
3 2 C7, C6 CAP, 1812 100µF 20% 6.3V X5R TDK C4532X5R0J107M
4 1 C10 CAP, 1206 22µF 20% 6.3V X5R TAIYO YUDEN JMK316BJ226ML-T
5 1 C12 CAP, 0603 100pF 10% 50V X7R AVX 06035C101KAT1A
6 1 R1 RES, 0603 49.9k 1% 1/10W AAC CR16-4992FM
7 1 R8 - ALTERNATE RES, 0603 0Ω JUMPER ACC CJ06-000M
R8 RES, 0603 0Ω JUMPER VISHAY CRCW06030000Z0EA
8 1 U1 IC, LTM4600HVEV LINEAR TECHNOLOGY LTM4600HVEV
Additional Demo Board Circuit Components
1 0 C4, C3 CAP, 1206 OPTION TAIYO YUDEN EMK316BJ475ML-T
2 0 C8 CAP, 1812 OPTION TAIYO YUDEN JMK432BJ107MU-T
3 0 C11, C14, C18, C19
CAP, 0603 OPTION OPTION
4 1 C13 CAP, 0603 100pF 10% 50V NPO AVX 06035A101KAT
5 2 C15, C16 CAP, 0603 1µF 20% 10V X5R TAIYO YUDEN LMK107BJ105MA-T
6 0 C17 CAP, 0805 1µF 20% 16V X5R OPTION TAIYO YUDEN EMK212BJ105MG-T
7 1 D1 DIODE, ZENER 4.7V DIODES INC. BZX84C4V7-7-F
8 1 Q14 XSTR, SUD50N03-10CP MOSFET SILICONIX SUD50N03-10CP-E3
9 1 R2 RES, 0603 66.5k 1% 1/10W AAC CR16-6652FM
10 1 R3 RES, 0603 31.6k 1% 1/10W AAC CR16-3162FM
R3 - ALTERNATE RES, 0603 31.6k 1% 1/10W PANASONIC ERJ-3GEY512V
11 1 R4 RES, 0603 22.1k 1% 1/10W AAC CR16-2212FM
12 1 R5 RES, 0603 13.7k 1% 1/10W AAC CR16-1372FM
13 3 R6, R10, R12 RES, 0603 10k 5% 1/10W VISHAY CRCW060310K0JNEA
R6, R10, R12- ALTERNATE
RES, 0603 10k 5% 1/10W VISHAY CRCW0603103J
14 1 R7 RES, 0603 5.1k 5% 1/10W AAC CR16-512JM
R7 RES, 0603 5.1k 5% 1/10W PANASONIC ERJ-3GEY512V
15 1 R9 RES, 0603 1MΩ 5% 1/16W AAC CR16-105JM
16 1 R11 RES, 2512 0.01Ω 5% 1W IRC LRF2512-01-R010-J
17 0 R13 RES, 0603 OPTION OPTION
18 1 R14 RES, 0603 100k 1% 1/10W AAC CR16-1003FM
Hardware
1 6 JP0 TO JP5 HEADER, 2-PIN, 2mm COMM CON 2802S-02G2
2 2 JP6, JP7 HEADER, 3-PIN, 2mm COMM CON 2802S-03G2
3 4 J1, J2, J3, J4 JACK, BANANA KEYSTONE 575-4
4 2 J5, J6 CONN, BNC, 5 PINS CONNEX 112404
5 14 TP1 TO TP14 TURRET MILL-MAX 2501-2-00-80-00-00-07-0
6 3 JP3, JP6, JP7 SHUNT SAMTEC 2SN-BK-G
7 4 STANDOFF, SNAP ON KEYSTONE_8831
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DEMO MANUAL DC823B-B
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 representa-tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
1
DC
M
CC
M
2
13
2
VIN
GN
D
VIN
+
VIN
-
EX
TV
CC
SV
IN
FA
DJ
VO
SE
T
FC
B
PW
RG
D
SG
ND
IOS
TE
PC
LK
VO
+
VO
UT
GN
D
VO
-
RU
N/S
S
JUM
PE
RV
OU
T
JP0
JP1
JP2
JP3
JP4
JP5
1.2
V
1.5
V
1.8
V
2.5
V
3.3
V
5V
VO
+
OF
F
ON
RU
N/S
S
3FC
B
IOS
TE
P
4.5
V-2
8V
0.6
V-5
V/1
0A
(VO
S R
TN
)
CO
MP
12
3.3
V1
1
1.2
V2
1
12
2
1.5
V
21 2
2.5
V5
V1
.8V
VO
UT
SE
L
VIN
VO
UT
SV
IN
VO
SE
T
FC
B
EX
TV
CC
CO
MP
PW
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D
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VIN
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INT
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14.5
M -
1994
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l 1
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1
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H, LT
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DC
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.DS
NN
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4
RE
VIS
ION
HIS
TO
RY
DE
SC
RIP
TIO
ND
AT
EA
PP
RO
VE
DE
CO
RE
V
PR
OD
105/2
7/0
5
RE
VIS
ION
HIS
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RIP
TIO
ND
AT
EA
PP
RO
VE
DE
CO
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PR
OD
105/2
7/0
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HIS
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RO
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PR
OD
105/2
7/0
5
C1
7O
PT
C1
7O
PT
12
R1
3O
PT
R1
3O
PT
12
C1
8
OP
T
C1
8
OP
T
12
R1
4
10
0K
R1
4
10
0K
1 2
TP
13
TP
13
TP
10
TP
10J2
J2
TP
14
TP
14
TP
6T
P6
C4
OP
T
C4
OP
T
1 2
JP
1JP
1
R1
1
0.0
1
R1
1
0.0
1
C1
5
1u
F
C1
5
1u
F
12
TP
1T
P1
TP
7T
P7
JP
0JP
0
R1
2
10
K
R1
2
10
K
12
TP
11
TP
11
J3
J3
TP
9T
P9
R1
49
.9K
R1
49
.9K
1 2
J4
J4
TP
8T
P8
R8
0R8
0
12
U1
LT
M4
60
0H
VE
V
U1
LT
M4
60
0H
VE
V
VINB1
VIND1
VINF1
VINA3
VINA5
VINA7
VINA9
VINA11
VINA13
VINC10
VINC12
VINC14
VINE14
VINE12
VINE10
SG
ND
D2
3
PG
ND
G1
PG
ND
H9
PG
ND
H1
1
PGNDH13
PGNDH15
PGNDH17
PGNDJ1
PGNDK7
PGNDK9
PGNDK11
PGNDK13
PGNDK15
PGNDK17
PGNDL2
PGNDL4
PGNDL6
PGNDL8
PGNDL10
PGNDL12
PGNDL14
PGNDL16
PGNDL18
PGNDL20
PGNDL22
PGNDM2
PGNDM4
PGNDM6
PGNDM10
PGNDM12
PGNDM14
PGNDM16
PGNDM18
PGNDM20
PGNDM22
PGNDN2
PGNDM8
PGNDN4
PGNDN6
PGNDN8
PGNDN10
PG
ND
N1
2P
GN
DN
14
PG
ND
N1
6P
GN
DN
18
PG
ND
N2
0P
GN
DN
22
PG
ND
H7
VO
UT
P2
2V
OU
TP
20
VO
UT
P1
8V
OU
TP
16
VO
UT
P1
4V
OU
TP
12
VO
UT
P1
0V
OU
TP
8V
OU
TP
6V
OU
TP
4V
OU
TP
2V
OU
TR
22
VO
UT
R2
0
VOUTR18
VOUTR16
VOUTR14
VOUTR12
VOUTR10
VOUTR8
VOUTR6
VOUTR4
VOUTR2
VOUTT22
VOUTT20
VOUTT18
VOUTT16
VOUTT14
VOUTT12
VOUTT10
VOUTT6
VOUTT4
VOUTT2
VOUTT8
EX
TV
CC
A1
9
SV
INA
17
FA
DJ
A1
5
VO
SE
TA
21
CO
MP
B2
3
FC
BG
23
PG
OO
DJ2
3
RU
N/S
SF
23
C1
3
10
0p
F
C1
3
10
0p
F
C1
6
1u
F
C1
6
1u
F
12
C1
21
00
pF
C1
21
00
pF
12
TP
2T
P2
C7
10
0u
F
C7
10
0u
F
1 2
C1
1O
PT
C1
1O
PT
12
+C
1
15
0u
F
+C
1
15
0u
F
1 2
C5
10
uF
35V
C5
10
uF
35V
1 2
R2
66
.5K
R2
66
.5K
1 2
R3
31
.6K
R3
31
.6K
12
JP
4JP
4
C2
10
uF
35V
C2
10
uF
35V
1 2
TP
4T
P4
TP
12
TP
12
R9
1M
R9
1M
12
C3
OP
T
C3
OP
T1 2
R4
22
.1K
R4
22
.1K
12
C8
OP
T
C8
OP
T
1 2
J5
J5
1
2
3
4
5
R6
10
K
R6
10
K
12
C1
4
OP
T
C1
4
OP
T
12
C6
10
0u
F
C6
10
0u
F
1 2
R1
0
10
K
R1
0
10
K
12
D1
4.7
V
D1
4.7
V
13
C1
9O
PT
C1
9O
PT
12
J6
J6
1
2
3
4
5
JP
6JP
6
JP
2JP
2
Q1
4Q
14
1
2 3
JP
3JP
3
J1
J1
TP
5T
P5
C1
0
22
uF
6.3
V
C1
0
22
uF
6.3
V
1 2
JP
7JP
7
TP
3T
P3
JP
5JP
5
R7
5.1
K
R7
5.1
K
12
R5
13
.7K
R5
13
.7K
12
6dc823bbf
DEMO MANUAL DC823B-B
Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2011
LT 0111 • PRINTED IN USA
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 applica-tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
