Linear LTM4636 User manual

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dc2330aaf
DEMO MANUAL DC2230A-A
DESCRIPTION
LTM4636
40A DC/DC µModule Regulator
Demonstration circuit 2230A-A features the LT M
®
4636EY,
a 40A high efficiency, switch mode step-down power
µModule
®
regulator.Theinputvoltagerangeisfrom4.7V to
15V. For input voltage range from 4.7V to 5.5V, short PVCC
pin to VIN pin with R8 = R21 = 0Ω and remove R17. The
output voltage range is 0.6V to 3.3V. Derating is necessary
forcertainVIN,VOUT, frequencyand thermal conditions.The
board operates in continuous conduction mode in heavy
load conditions. For high efficiency at low load currents,
the MODE_PLLIN jumper selects pulse-skipping mode for
noise sensitive applications or BurstMode
®
operation in
less noise sensitive applications. The MODE_PLLIN pin L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and μModule are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
BOARD PHOTO
also allows the LTM4636 to synchronize to an external
clock signal. DC2230A-A has the option of choosing both
internal and external compensation circuit for LTM4636.
Tying the PHASMD pin to different voltage generates cer-
tain phase difference between MODE_PLLIN and CLKOUT.
The LTM4636 data sheet must be read in conjunction with
this demo manual prior to working on or modifying demo
circuit DC2230A-A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2230A-A

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dc2230aaf
DEMO MANUAL DC2230A-A
QUICK START PROCEDURE
PERFORMANCE SUMMARY
PARAMETER CONDITIONS/NOTES VALUE
Input Voltage Range 4.7V to 15V
Output Voltages 1.0V ± 1.3%
Maximum Continuous Output Current Derating is Necessary for Certain Operating Conditions. See Data Sheet for Details. 40ADC
Operating Frequency 350kHz
Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 40A 87.7% (see Figure 2)
Load Transient VIN = 12V, VOUT = 1.0V, ISTEP = 0A to 10A 81mV (see Figure 3)
Demonstration circuit 2230A-A is an easy way to evalu-
ate the performance of the LTM4636EY. Please refer to
Figure1 for proper measurement equipment setup and
follow the procedure below.
1. Place jumpers in the following positions for a typical
application:
MODE RUN
CCM ON
2. 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.
3. Turn on the power supply at the input. The output volt-
age should be 1.0V ± 1.3% (0.987V to 1.013V).
4. Vary the input voltage from 6V to 15V and adjust the
load current from 0A – 40A. Observe the output volt-
age regulation, ripple voltage, efficiency, and other
parameters.
5. (Optional) For optional load transient test, apply an
adjustable pulse signal between IOSTEP_CLK and GND
test points. The pulse amplitude sets the load step cur-
rent amplitude. Keep the pulse width short (<1ms) and
pulse duty cycle low (<5%) to limit the thermal stress
on the load transient circuit.
6. (Optional) LTM4636 can be synchronized to an external
clock signal. Place the JP1 jumper on EXT_CLK and
apply a clock signal (0V to 5V, square wave) on the
MODE_PLLIN test point.

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dc2330aaf
DEMO MANUAL DC2230A-A
Figure 1. Measurement Setup of DC2230A-A
+
–
+
–
+
–
+
–
LOAD
QUICK START PROCEDURE

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dc2230aaf
DEMO MANUAL DC2230A-A
Figure 2. Measured Efficiency at VIN = 5V/12V, VOUT = 1V, fSW = 350kHz, CCM
QUICK START PROCEDURE
Figure 3. Measured Load Transient, VIN = 12V, VOUT = 1.0V, ISTEP = 0A to 10A
OUTPUT CURRENT (A)
0
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
dc2230aa F02
12VIN
5VIN
VOUT
50mV/DIV
IOUT_STEP
10A/DIV

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DEMO MANUAL DC2230A-A
QUICK START PROCEDURE
Figure 4. Thermal Image of LTM4636, VIN = 12V, VOUT = 1.0V, ILOAD = 40A, Ambient Temperature = 23.0°C, No Forced Airflow

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DEMO MANUAL DC2230A-A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART #
Required Circuit Components
1 1 CIN1 CAP., ALUM. ELECT., 150µF, 25V, CE SERIES SUN ELECT., 25CE150AX
2 6 CIN4, CIN5, CIN6, CIN7, CIN8, CIN9 CAP., 22µF, X5R, 16V, 20%,1210 MURATA, GRM32ER61C226ME20
3 8 COUT1, COUT2, COUT3, COUT4,
COUT6, COUT7, COUT11, COUT12
CAP., 100µF, X5R, 6.3V, 20%,1210 MURATA, GRM32ER60J107ME20L
4 3 COUT8, COUT13, COUT14 CAP., POSCAP, 470µF, 2.5V, 20%, D3L PANASONIC, 2R5TPE470M9
5 1 C15 CAP.,100pF, NP0, 50V, 5%, 0603 MURATA, GRM1885C1H101JA01D
6 1 C18 CAP., 2200pF, X7R, 25V, 10%, 0603 MURATA, GRM188R71E222KA01D
7 2 C19, C25 CAP., 0.1µF, X5R, 16V, 10%, 0603 MURATA, GRM188R61C104KA01D
8 1 C22 CAP., 4.7µF, X5R, 10V, 10%, 0603 TDK, C1608X5R1A475K080AC
9 1 C23 CAP., 1µF, X5R, 25V, 10%, 0603 MURATA, GRM188R61E105KA12D
10 1 C24 CAP., 22µF, X5R, 6.3V, 20%, 0805 KEMET, C0805C226M9PACTU
11 1 Q1 XSTR., MOSFET, N-CH, 40V, 50A, TO-252 VISHAY, SUD50N04-8M8P-4GE3
12 1 R9 RES., 7.5k, 0.5%, 0603 VISHAY, CRCW06037K5FKEA
13 4 R11, R12, R16, R54 RES., 10k, 1/10W, 1%, 0603 VISHAY, CRCW060310K0FKEA
14 1 R18 RES., 15k, 1/10W, 1%, 0603 VISHAY, CRCW060315K0FKEA
15 2 R25, R32 RES., 10Ω, 1/10W, 1%, 0603 VISHAY, CRCW060310R0FKEA
16 1 R35 RES., 2.2Ω, 1/8W, 5%, 0805 VISHAY, CRCW08052R20JNEA
17 1 R40 RES., 34.8k, 1/10W, 1%, 0603 VISHAY, CRCW060334K8FKEA
18 1 R55 RES., SENSE, 0.01Ω, 1/2W, 1%, 2010 VISHAY, WSL2010R0100FEA
19 1 U1 LTM4636EY#PBF, 16mm × 16mm × 5.01mm BGA LINEAR TECH., LTM4636EY#PBF
Additional Demo Board Circuit Components
1 0 COUT9 (OPT) CAP., OPTION, D3L OPT
2 0 COUT10, COUT15, COUT16 (OPT) CAP., OPTION, 1210 OPT
3 0 C14, C16, C17, C26(OPT) CAP., OPTION, 0603 OPT
4 0 R8, R10, R13, R14, R15, R19, R20,
R21, R22, R38 (OPT), R22, R24, R38,
R56 (OPT)
RES., OPTION, 0603 OPT
5 3 R17, R23, R33 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA
6 0 Q2 XSTR., OPT, TO-252 OPT
Hardware
1 20 E1-E20 TEST POINT, TURRET, 0.064 MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
2 1 JP1 CONN., HEADER, 1 × 3, 2mm SULLINS, NRPN031PAEN-RC
3 1 JP2 CONN., HEADER, 1 × 4, 2mm SULLINS, NRPN041PAEN-RC
4 2 J1, J2 CONN., JACK, BANANA, NON-INSULATED, 0.218 KEYSTONE, 575-4
5 2 J3, J4 STUD, TEST PIN PEM, KFH-032-10
64 J3, J4 × 2 NUT
, BRASS 10-32 ANY, #10-32M/S BR PL
7 2 J3, J4 RING, LUG #10 KEYSTONE, 8205
8 2 J3, J4 WASHER, TIN PLATED BRASS ANY, #10 EXT BZ TN
9 2 J5, J6 CONN., BNC, 5 PINS CONNEX, 112404
10 2 XJP1, XJP2 SHUNT, 2mm SAMTEC 2SN-BK-G
11 4 (STANDOFF) STANDOFF, NYLON, SNAP-ON, 0.500 KEYSTONE, 8833 (SNAP-ON)

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dc2330aaf
DEMO MANUAL DC2230A-A
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
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS AND CAPACITORS ARE 0603.
25V
4.7V - 15V
ON
2.5V
EEFGX0E471L
OFF
*
WHEN VIN < 5.5V, SHORT PVCC TO VIN WITH R8 =R21= 0ohm and remove R17.
1.0V / 40A
DYNAMIC LOAD CIRCUIT
DO NOT EXCEED 5% DUTY CYCLE!
MODE
PS BM CCM
VIN
GND
m
‐A OPTLTM4636EY
C17 *Q2
‐B
R10 OPT
ASSY I.C.
OPT
LTM4636EY‐1 10nF
C26
1uF
OPT
86.6k
R13,R14
OPT 10k
R20 OPT 100k
R24 OPT
0
R56 OPT
66.5k SUD50N04
VOSNS+
VIN VOUT
VOUT
VOUT
BIAS
BIAS
PVCC
PVCC
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YL
PRODUCTION
3 09-22-16
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YL
PRODUCTION
3 09-22-16
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YL
PRODUCTION
3 09-22-16
__
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
3
Thursday, September 22, 2016
11
STEP-DOWN MODULE REGULATOR
LT
YL
B
LTM4636EY DEMO CIRCUIT 2230
SINGLE OUTPUT, HIGH CURRENT,
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
3
Thursday, September 22, 2016
11
STEP-DOWN MODULE REGULATOR
LT
YL
B
LTM4636EY DEMO CIRCUIT 2230
SINGLE OUTPUT, HIGH CURRENT,
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
3
Thursday, September 22, 2016
11
STEP-DOWN MODULE REGULATOR
LT
YL
B
LTM4636EY DEMO CIRCUIT 2230
SINGLE OUTPUT, HIGH CURRENT,
COUT4
100uF 1210
E2
VIN
E5
HIZREG
COUT1
100uF
COUT7
100uF 1210
R16 10K
R21 OPT R17
0
C25
0.1uF
C24 22uF 0805
R19 OPT
Q2
*
2
1
3
4
R10
*
C23 1uF
R55 0.01 2010
COUT12
100uF 1210
E20
BIAS
COUT11
100uF 1210
CIN5 22uF 1210
J6
IOSTEP
1
2
3
4
5
R33
0
C18
2200pF
E6
PGOOD
COUT16
OPT 1210
CIN9 22uF 1210
R54 10K
J3 VOUT
COUT10
OPT 1210
R14
*
E17
CLKOUT
R56
*
C14 OPT
J1
R25 10
COUT15
OPT 1210
U1
LTM4636EY / LTM4636EY-1
GMON H9
SNSP1 F2
TEST3 H2
HIZREG
F3
PGOOD
E1
SW L11
RUNP
G8
CLKOUT G3
SNSP2 F1
TEST2 F5
RUNC
E2 TRACK/SS E3
VFB E4
TEST4 / CROWBAR E11
GND
M9
GND
M10
GND / OVP_SET
E12
COMPB D5 COMPA E5
NC / BIAS G9
PHASEMD
G7
TEMP+ G12
TEMP- G11
GND
M12
VOSNS1 D4
VOSNS- D3
GND / OVP_TRIP
E10
INTVCC
F6
MODE_PLLIN
H3
PWM H7
PVcc
F9
GND / OVER_TEMP
D10
TEST1 H4
GND
M1
FREQ
G5
GND
M2
TMON H8
GND
M11
SGND
G4
SGND
F4
SW K11
VOUT A1
VOUT A2
VOUT A3
VOUT A4
VOUT A5
VOUT A6
VOUT A7
VOUT A8
VOUT A9
VOUT A10
VOUT A11
VOUT A12
VOUT B1 VOUT B2 VOUT B3 VOUT B4 VOUT B5 VOUT B6 VOUT B7 VOUT B8 VOUT B9 VOUT B10 VOUT B11 VOUT B12 VOUT C1 VOUT C2 VOUT C3 VOUT C4 VOUT C5 VOUT C6 VOUT C7 VOUT C8 VOUT C9 VOUT C10 VOUT C11 VOUT C12
VOUT D1
VOUT D2
VOUT D11
VOUT D12
GND
M3
GND
D6
GND
D7
GND
D8
GND
D9
GND
E6
GND
E7
GND
E8
GND
E9
GND
F7
GND
F8
GND
F10
GND / OTP_SET
F11
GND
F12
GND
G1
GND
G2
GND
G6
GND
G10
GND
H10
GND
H11
GND
H12
GND
H1
GND
J1
GND
J2
GND
J3
GND
J8
GND
J9
GND
J10
GND
J11
GND
J12
GND
K1
GND
K2
GND
K3
GND
K9
GND
K10
GND
K12
GND
L1
GND
L2
GND
L3
GND
L9
GND
L10
GND
L12
VIN H5
VIN H6
VIN J4
VIN J5
VIN J6
VIN J7
VIN K4
VIN
K5
VIN
K6
VIN
K7
VIN
K8
VIN
L4
VIN
L5
VIN
L6
VIN
L7
VIN
L8
VIN M4
VIN M5
VIN M6
VIN M7
VIN M8
+
COUT14
470uF
C19
0.1uF
R20 *
R18 15k
J2
JP2
1 3 2
4
C15
100pF
P1
E11
IOSTEP_CLK
P2
R11
10K
E16
TMON
C16 OPT
R9 7.5k
E13
CROWBAR
+
COUT8
470uF
J5
VOUT
1
2
3
4
5
R32 10
R8 OPT
E14
VOUT_SNS
R24
*
R23
0
+
COUT9
OPT
+
COUT13
470uF
C26
*
COUT3 100uF
COUT6
100uF 1210
COUT2
100uF
J4
GND
R35
2.2
0805
CIN8 22uF 1210
E10
RUN
E9
MODE_PLLIN
CIN7 22uF 1210
E7
OVER_TEMP
R40
34.8k
+
CIN1 150uF
R15 OPT
E12
GND
JP1
RUN
1 3 2
R13
*
E4
INTVCC
R22 OPT
E18
TEMP+
R12
10K
CIN6 22uF 1210
E15
GND_SNS
C22
4.7uF
R38
OPT
C17
*
CIN4 22uF 1210
E19
TEMP-
E8
OVP_TRIP
E1
GND
Q1
SUD50N04-8M8P
2
1
3
4
E3
GND

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dc2230aaf
DEMO MANUAL DC2230A-A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 1116 • 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