Linear Technology LTM4630EY-1 Quick setup guide

1
dc2081a-bfa
DEMO MANUAL DC2081A-B
Description
LTM4630EY-1
Dual 18A or Single 36A μModule
Regulator with ±0.8% DC and
±3% Transient Accuracy
Demonstrationcircuit 2081A-B featurestheLT M
®
4630EY-1,
the high efficiency, high density, dual 18A, switch mode
step-down μModule
®
regulator with ±0.8% total DC output
accuracy. The input voltage is from 4.5V to 15V. The output
voltage is programmable from 0.6V to 1.8V. DC2081A-B is
configuredasdual-phase,single-output,whichcandeliver
up to 36A maximum. With the help of external compensa-
tion, ±3% transient accuracy can be achieved with 25%
load step. The board designs with minimum components
to demonstrate this high efficiency, high density μModule.
As explained in the data sheet, output current de-rating is L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
performance summary
necessary for certain VIN, VOUT, and thermal conditions.
These features and the availability of the LTM4630EY-1
in a compact 16mm × 16mm × 5.01mm BGA package
make it ideal for use in many high-density point-of-load
applications. The LTM4630-1 data sheet must be read
in conjunction with this demo manual for working on or
modifying the demo circuit DC2081A-B.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2081A-B
Specifications are at TA= 25°C
PARAMETER CONDITIONS VALUE
Input Voltage Range 4.5V ~ 15V
Output Voltage VOUT VIN = 4.5 ~ 15V, IOUT = 0 ~ 36A (for LTM4630-1A) 1.0V ± 0.8% (0.992V ~ 1.008V)
Maximum Continuous Output Current De-rating is Necessary for Certain VIN, VOUT and
Thermal Conditions, See Data Sheet for Detail
36A
Default Operating Frequency 400kHz
Efficiency VIN = 5V, VOUT = 1.0V, IOUT = 36A, fSW = 400kHz 85.7%, See Figure 2
Load Transient VIN = 12V, VOUT = 1.0V, ISTEP = 0 ~ 9A < 56.3mVP-P, See Figure 3

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dc2081a-bfa
DEMO MANUAL DC2081A-B
Dc2081a-B BoarD photo
Demonstration circuit DC2081A-B is easy to set up to
evaluate the performance of the LTM4630-1. Please refer
to Figure 1 for proper measurement setup and follow the
procedure below:
1. With power off, connect the input power supply, load
and meters as shown in Figure 1. Preset the load to 0A
and VIN supply to 12V.
2. Turn on the power supply at the input. The output volt-
age should be 1.0V ± 0.8% (0.992V ~ 1.008V).
Quick start proceDure
3. Oncethe proper output voltage is established, adjust the
load within the operating range and observe the output
voltage regulation, output voltage ripple, efficiency and
other parameters. Output ripple can be measured at J6
with BNC cables.
4. (Optional) For optional load transient test, apply an ad-
justable pulse signal between “IOSTEP CLK” and “GND”
test point. Pulse amplitude (3V~ 3.5V) sets the load
stepcurrentamplitude. The output transient current can
be monitored at the BNC connector J5 (15mV/A). The
pulse signal should have very small duty cycle (<10%)
to limit the thermal stress on the transient load circuit.

3
dc2081a-bfa
DEMO MANUAL DC2081A-B
Figure 1. Test Setup of DC2081A-B
Quick start proceDure
Load (0-36A)
V
VOUT
V
VIN
A
-1A
B

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dc2081a-bfa
DEMO MANUAL DC2081A-B
Figure 2. Measured LTM4630-1 Efficiency (VOUT = 1.0V, fsw = 400kHz)
Quick start proceDure
Figure 3. Measured LTM4630-1 0A – 9A Load Transient (VIN=12V, VOUT = 1.0V, fsw = 400kHz)
LOAD CURRENT (A)
0
EFFICIENCY (%)
95
85
75
90
80
70
65 8 12 16 20 24 28 32
2081A F02
364
5VIN
12VIN
0A TO 9A
LOAD STEP
1.0VOUT
(20MHz BW)
20mV/DIV

5
dc2081a-bfa
DEMO MANUAL DC2081A-B
Quick start proceDure
Figure 4. LTM4630-1 Thermal Capture (VIN=12V, VOUT = 1.0V/36A, fsw=400kHz, TA= 25°C, No Airflow and No Heat Sink)

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dc2081a-bfa
DEMO MANUAL DC2081A-B
Dc2081a-B parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 CIN1 CAP., ALUM., 150μF, 25V, 20% SUN ELECT., 25CE150AX
2 4 CIN2, CIN3, CIN4, CIN5 CAP., CER., 22μF, X5R, 25V, 10%, 1210 MURATA, GRM32ER61E226KE15L
3 5 COUT3, COUT5, COUT7, COUT12,
COUT14
CAP., CER., 220μF, X5R, 4V, 20%, 1206 MURATA, GRM31CR60G227ME11L
4 1 C1 CAP., CER., X7R, 47pF, 25V, 10%, 0603 AVX, 06033C470KAT2A
5 1 C4 CAP., CER., 2.2μF, X5R, 10V, 10% 0603 MURATA, GRM188R61A225KE34D
6 1 C5 CAP., C0G, 3300pF, 50V, 5%, 0603 MURATA, GRM1885C1H332JA01D
7 1 C7 CAP., CER., 0.1μF, X5R, 25V, 10% 0603 AVX, 06033D104KAT2A
8 3 C8, C9, C10 CAP., CER., 1μF, X7R, 10V, 10%, 0603 AVX, 0603ZC105KAT2A
9 1 Q1 XSTR., SUD50N04-8M8P-4GE3 MOSFET VISHAY, SUD50N04-8M8P-4GE3
10 2 R1, R3 RES., 10Ω, 1/10W, 1%, 0603 VISHAY, CRCW060310R0FKEA
11 1 R2 RES., 121k, 1/10W, 1%, 0603 VISHAY, CRCW0603121KFKEA
12 2 R4, R18 RES., 10k, 1/10W, 1%, 0603 VISHAY, CRCW060310K0FKEA
13 1 R9 RES., 100k, 1/10W, 1%, 0603 VISHAY, CRCW0603100KFKEA
14 1 R11 RES., 1k, 1/10W, 1%, 0603 VISHAY, CRCW06031K00FKEA
15 1 R13 RES., CHIP, 4.02k, 1%, 0603 VISHAY, CRCW06034K02FKEA
16 1 R16 RES., SENSE, 0.015Ω, 1W, 2512 VISHAY, WSL2512R0150FEA
17 1 R19 RES., 90.9k, 1/10W, 1%, 0603 VISHAY, CRCW060390K9FKEA
18 1 U1 LTM4630EY-1#PBF, 16X16X4.41-LGA LINEAR TECH., LTM4630EY-1A#PBF
Additional Demo Board Circuit Components
1 0 COUT2, COUT4, COUT6, COUT8 OPT., SANYO-D4D OPT.
2 0 COUT9, COUT10 OPT., SANYO-D4D OPT.
3 0 COUT1, COUT11, COUT13 OPT. 1210 OPT.
4 0 C3 OPT.OPT.
5 0 R8, R10 OPT 0603 OPT
6 2 R12, R14 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA
Hardware
1 9 E1-E7, E17, E18 TEST POINT, TURRET, .094" MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0
2 0 E8-E14 (OPT) TESTPAD SMD TESTPAD SMD
3 2 J1, J3 JACK, BANANA KEYSTONE, 575-4
4 2 J2, J4 STUD, TESTPIN PEM KFH-032-10
5 4 J2, J4 (X2) NUT, BRASS 10-32 ANY #10-32
6 2 J2, J4 RING, LUG #10 KEYSTONE #10
7 2 J2, J4 WASHER, TIN PLATED BRASS ANY #10
8 2 J5, J6 CONN., BNC, 5 PINS CONNEX, 112404
9 4 (STAND-OFF) STANDOFF, NYLON, SNAP-ON, .500" TALL KEYSTONE, 8833

7
dc2081a-bfa
DEMO MANUAL DC2081A-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.
Dc2081a-B schematic Diagram
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
36A
NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603.
m
DYNAMIC LOAD CIRCUIT
VOUT
4.5V - 15V
PGOOD RUN
TRACK
VFB PGOOD COMP RUN TRACK DIFFP DIFFN
VFB COMP
VIN
INTVCC
VOUT
VO+
VO-
VO+
INTVCC
VO+ VO-
VOUT
VIN
VOUT
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
PRODUCTION
-
1 HAORAN W 10-22-14
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
PRODUCTION
-
1 HAORAN W 10-22-14
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
PRODUCTION
-
1 HAORAN W 10-22-14
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: [phone]
Milpitas, CA 95035 Phone: [phone]
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT DC2081A-B
Wednesday, October 22, 2014
11
HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT
N/A
LTM4630EV / LTM4630EY-1
HAORAN W.
STEP-DOWN POWER MODULE REGULATOR
LT
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: [phone]
Milpitas, CA 95035 Phone: [phone]
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT DC2081A-B
Wednesday, October 22, 2014
11
HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT
N/A
LTM4630EV / LTM4630EY-1
HAORAN W.
STEP-DOWN POWER MODULE REGULATOR
LT
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: [phone]
Milpitas, CA 95035 Phone: [phone]
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT DC2081A-B
Wednesday, October 22, 2014
11
HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT
N/A
LTM4630EV / LTM4630EY-1
HAORAN W.
STEP-DOWN POWER MODULE REGULATOR
LT
C5 3.3nF C5 3.3nF
COUT5 220uF
1206
4V
COUT5 220uF
1206
4V
R10 (OPT) R10 (OPT)
J5 IOSTEP J5 IOSTEP
R12 0 Ohm R12 0 Ohm
C9
1uF
C9
1uF
CIN4
22uF 25V
1210
CIN4
22uF 25V
1210
E9 CLKIN E9 CLKIN
+
COUT4
(OPT)
+
COUT4
(OPT)
+
COUT8 (OPT)
+
COUT8 (OPT)
R11
1K
R11
1K
C1
47pF
C1
47pF
R18 10K R18 10K
C7
0.1uF
C7
0.1uF
CIN5
22uF 25V
1210
CIN5
22uF 25V
1210
+
COUT6 (OPT)
+
COUT6 (OPT)
R4
10K
R4
10K
+
COUT2
(OPT)
+
COUT2
(OPT)
E18
GND
E18
GND
C4
2.2uF
10V C4
2.2uF
10V
R19 90.9K 1% R19 90.9K 1%
+
CIN1 150uF
25V
+
CIN1 150uF
25V
R2
121K
1% R2
121K
1%
E8
TEMP
E8
TEMP
COUT11 (OPT) COUT11 (OPT)
R9
100K
1%
R9
100K
1%
R3
10
R3
10
E11
EXTVCC
E11
EXTVCC
E2
VIN-
E2
VIN-
E4
VO-
E4
VO-
J3
GND
J3
GND
1
E6
RUN
E6
RUN
COUT3 220uF 4V 1206 COUT3 220uF 4V 1206
E3
VO+
E3
VO+
C8 1uF C8 1uF
+
COUT9
(OPT)
+
COUT9
(OPT)
J1
VIN
J1
VIN
1
Q1
SUD50N04-8M8P
Q1
SUD50N04-8M8P
2
1
3
4
E7
SGND
E7
SGND
E12
PHASMD
E12
PHASMD
R13
4.02K
R13
4.02K
+
COUT10
(OPT)
+
COUT10
(OPT)
J2
0.6 - 1.8V
VOUT
J2
0.6 - 1.8V
VOUT
E14
SW2
E14
SW2
R16 0.015 1W 2512 R16 0.015 1W 2512
E13 SW1 E13 SW1
E17
IOSTEP CLK
E17
IOSTEP CLK
COUT14 220uF 1206 4V COUT14 220uF 1206 4V
J6J6
U1 LTM4630EY-1 U1 LTM4630EY-1
VOUT1
A1
VOUT1
A2
VOUT1
A3
VOUT1
A4
VOUT1
A5
VOUT1
B1
VOUT1
B2
VOUT1
B3
VOUT1
B4
VOUT1
B5
VOUT1
C1
VOUT1
C2
VOUT1
C3
VOUT1
C4
VFB1
D5
SW1
G2
PGOOD1
G9
COMP1
E6
RUN1
F5
TRACK1
E5
VOUTS1
C5
VOUT2
A8
VOUT2
A9
VOUT2
A10
VOUT2
A11
VOUT2
A12
VOUT2
B8
VOUT2
B9
VOUT2
B10
VOUT2
B11
VOUT2
B12
VOUT2
C9
VOUT2
C10
VOUT2
C11
VOUT2
C12
VFB2
D7
SW2
G11
PGOOD2
G8
COMP2
E7
RUN2
F9
TRACK2
D8
VOUTS2
C8
VIN
M2
VIN
M3
VIN
M4
VIN
M5
VIN
M6
VIN
M7
VIN
M8
VIN
M9
VIN
M10
VIN
M11
VIN
L2
VIN
L3
VIN
L4
VIN
L5
VIN
L6
VIN
L7
VIN
L8
VIN
L9
VIN
L10
VIN
L11
VIN
K2
VIN
K3
VIN
K4
VIN
K9
VIN
K10
VIN
K11
VIN
J2
VIN
J3
VIN
J4
VIN
J9
VIN
J10
VIN
J11
GND
A6
GND
A7
GND
B6
GND
B7
GND
D1
GND
D2
GND
D3
GND
D4
GND
D9
GND
D10
GND
D11
GND
D12
GND
E1
GND
E2
GND
E3
GND
E4
GND
E10
GND
E11
GND
E12
GND
F1
GND
F2
GND
F3
GND
F10
GND
F11
GND
F12
GND
G1
GND
G3
GND
G10
GND
G12
GND
H1
GND
H2
GND
H3
GND
H4
GND
H5
GND
H6
GND
H7
GND
H9
GND
H10
GND
H11
GND
H12
GND
M12
GND
M1
GND
L12
GND
J1
GND
J5
GND
J8
GND
J12
GND
K1
GND
K5
GND
K6
GND
K7
GND
K8
GND
K12
GND
L1
SGND
C7
SGND
D6
SGND
F6
SGND
F7
SGND
G6
SGND
G7
FSET
C6
PHASMD
G4
DIFFP
E8
DIFFN
E9
CLKOUT
G5
MODE-PLLIN
F4
TEMP
J6
INTVCC
H8
EXTVCC
J7
DIFFOUT
F8
E1
VIN+
E1
VIN+
COUT12 220uF 1206 4V COUT12 220uF 1206 4V J4
GND
J4
GND
R14
0 Ohm
0603
R14
0 Ohm
0603
COUT7 220uF
1206
4V
COUT7 220uF
1206
4V
E5
PGOOD
E5
PGOOD
R8 (OPT) R8 (OPT)
E10
CLKOUT
E10
CLKOUT
COUT13 (OPT) COUT13 (OPT)
C10 1uF C10 1uF
COUT1
(OPT)
COUT1
(OPT)
C3
(OPT)
C3
(OPT)
CIN3
22uF 25V
1210
CIN3
22uF 25V
1210
R1
10
R1
10
CIN2
22uF 25V
1210
CIN2
22uF 25V
1210

8
dc2081a-bfa
DEMO MANUAL DC2081A-B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com ©
LINEAR TECHNOLOGY CORPORATION 2015
LT 0715 REV A • 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 application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation

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