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User Guide for ANALOG DEVICES models including: EVAL-LTM4719-AZ, EVAL-LTM4719-AZ Evaluation Board, Evaluation Board, Board
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DocumentDocumentEvaluation Board User Guide EVAL-LTM4719-AZ LTM4719 42V Dual Input, Low Noise 150mA Step-Down µModule Regulator with I2C Battery Health Monitor General Description The EVAL-LTM4719-AZ evaluation board features the LTM®4719, a 42V dual input, 150mA synchronous buck power µModule® (micromodule) regulator with an integrated battery health monitor and a low-dropout linear regulator. The EVAL-LTM4719-AZ has a wide operating input range of 2.4V to 42V and supports seamless transition between the two separate input power sources. The output has a range of 1V to 4.2V and can source up to 150mA of continuous output current. The EVAL-LTM4719-AZ also features an EXTVCC jumper (JP3) to VBUS for improved efficiency in some applications. The system can be monitored through VALID1, VALID2, PRIORITY, and PG indicators. There are accurate VSET1 and VSET2 comparators to program independent undervoltage lockout (UVLO) thresholds. Fault protection features include input UVLO, power good, current limit, and overtemperature protection. The built-in precision coulomb counter supports input voltages from 1.8V to 5.5V and a peak current of up to 100mA. The EVAL-LTM4719-AZ utilizes jumpers to easily program the peak current limit of the coulomb counter from 5mA to 100mA by setting IPK0 (JP4), IPK1 (JP5), and IPK2 (JP6). Evaluation Board Photo The EVAL-LTM4719-AZ can be connected directly to a PC at P1 using the DC1613A, Analog Devices I2C/SMBus/ PMBus dongle. The LTpowerPlay® allows the user to run a graphical user interface (GUI) and configure a battery state of health (SoH) monitor. Features and Benefits · Seamless Transition between Inputs · Compatible with LTpowerPlay · Easy to use GUI for the Coulomb Counter · Access Coulomb Counter Register Data · Optional Supercapacitor Balancer EVAL-LTM4719-AZ Evaluation Board FILE DESCRIPTION EVAL-LTM4719-AZ Design files. LTpowerPlay Easy-to-use Windows® based GUI development tool. DC1613A The USB to PMBus controller dongle. Ordering Information appears at end of this user guide. Figure 1. EVAL-LTM4719-AZ Evaluation Board (Part Marking is Laser Mark) Rev. 0 One Analog Way, Wilmington, MA 01887-2356, U.S.A. DOCUMENT FEEDBACK Tel: 781.329.4700 TECHNICAL SUPPORT ©2025 Analog Devices, Inc. All rights reserved. Evaluation Board User Guide EVAL-LTM4719-AZ Performance Summary Specifications are at TA = 25°C. PARAMETER Input voltage range Input voltage range for coulomb counter Output voltage Bus voltage Maximum continuous output current per phase Default operating frequency VIN1, VIN2 VINC VOUT VBUS CONDITIONS Efficiency at VBUS 12VIN1, 2.3VBUS with 150mA load, EN2 off, Burst Mode® operation Efficiency at VOUT 12VIN1, 2.3VBUS, 1.8VOUT with 150mA load, Burst Mode operation MIN TYP MAX UNITS 2.4 42 V 2.7 5.5 V 1.8 V 2.3 V 150 mA 700 kHz 78.6 % 60.5 % Quick Start Required Equipment · Two power supplies · One electronic load · At least four digital multimeters (DMMs) Optional Equipment · DC1613A · PC with the LTpowerPlay software installed Procedure The EVAL-LTM4719-AZ evaluation board provides an easy way to evaluate the performance of the LTM4719 µModule. See Figure 2 for test setup connections and use the following procedure. 1. With power off, ensure that the jumpers are in the proper positions. JP1 JP2 JP3 JP7 JP8 PWM/SYNC DIODE EXTVCC EN2 EN1 BURST PRIORITY OPEN ON ON 2. Configure the IPEAK jumpers for your chosen current limit for the coulomb counter. Note that the IPEAK setting is locked at startup. IPK2 (JP6) 0 0 0 0 1 1 1 1 IPK1 (JP5) 0 0 1 1 0 0 1 1 IPK0 (JP4) 0 1 0 1 0 1 0 1 IPEAK (mA) 5 10 15 20 25 50 75 100 analog.com Rev. 0 2 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ 3. Before connecting the input supply, loads, and meters, preset the VIN1 supply to be between 2.4V and 42V and the VINC supply to be between 2.7V to 5.5V. Preset the load current to 0A. 4. With power off, connect the load, input voltage supplies, and meters, as shown in Figure 2. 5. Turn on VIN1 and VINC. The output voltage should be 1.8V ±2%. 6. Once the proper output voltages are established, adjust the load current up to 150mA. Observe the seamless transition between input supplies, output voltage regulation, output voltage ripple, and other parameters. If VOUT loses regulation while power is being supplied to VINC, the power supplies should be shut down, and the IPEAK limit should be adjusted. 7. Connect the DC1613A dongle from a PC to the P1 connector and configure a battery SoH monitor. See the LTpowerPlay GUI for the LTM4719 Quick Start Guide for details. VIN1 VINC analog.com LOAD VOUT Figure 2. Test Setup of EVAL-LTM4719-AZ Rev. 0 3 of 11 002 Evaluation Board User Guide EVAL-LTM4719-AZ LTpowerPlay Software GUI The LTpowerPlay is a powerful Windows-based development environment that supports Analog Devices power system management (PSM) ICs, including the LTM4719, LTM4676A, LTC®3880, LTC3883, LTC2974, and LTC2978. The software supports a variety of different tasks. Use the LTpowerPlay to evaluate the Analog Devices ICs by connecting to an evaluation (demo) board system. The LTpowerPlay can also be used in an offline mode (with no hardware present) to build a multichip configuration file that can be saved and reloaded later. The LTpowerPlay provides unprecedented diagnostic and debug features. The LTpowerPlay becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. The LTpowerPlay utilizes the DC1613A USB-to-SMBus controller to communicate with one of the many potential targets, including the LTM4719 or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. To access technical support documents for Analog Devices digital PSM products, visit the Help section to access the online help on the LTpowerPlay menu. LTpowerPlay GUI for the LTM4719 Quick Start Guide The following procedure describes how to use the LTpowerPlay to configure and monitor the settings of the LTM4719. 1. Download and install the LTpowerPlay GUI: LTpowerPlay. 2. Ensure the coulomb counter is powered through VINC and adjust the IPEAK settings for your chosen current limit for the coulomb counter. Note that the IPEAK setting is locked at startup. 3. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the EVAL-LTM4719-AZ. The system tree on the left-hand side should look like the following image: b. A green message box shows for a few seconds in the lower left-hand corner, confirming that the LTM4719 is communicating. 4. In the Setup tab, configure the settings for your chosen battery. Once finished, click the Start button. analog.com Rev. 0 4 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ 5. The coulomb counter is now monitoring the SoH of the battery. analog.com Rev. 0 5 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ Typical Performance Characteristics 85 68 Burst Mode OPERATION 51 85 68 Burst Mode OPERATION 51 EFFICIENCY (%) 003a EFFICIENCY (%) 003b 34 34 17 PWM MODE 17 PWM MODE 0 0.1 1 10 100 1k LOAD CURRENT (mA) 0 0.1 1 10 100 1k LOAD CURRENT (mA) (a) Efficiency at VBUS (b) Efficiency at VOUT Figure 3. Efficiency in Burst Mode Operation vs. Pulse-Width Modulation (PWM) Mode VOUT 100mV/DIV analog.com IOUT 100mA/DIV 50µs/DIV Figure 4. Load Transient Response from 15mA to 150mA Load Step VIN1 10A/DIV VINC 5V/DIV VALID1 5V/DIV VOUT (AC) 50mV/DIV 50ms/DIV Figure 5. Switchover to Battery Power 005 004 Rev. 0 6 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ EVAL-LTM4719-AZ Evaluation Board Bill of Materials ITEM QTY REFERENCE Required Circuit Components 1 2 C1, C2 2 2 C10, C11 3 1 C12 4 1 C16 5 1 C18 6 1 C19 7 2 C3, C8 8 2 C4, C5 PART DESCRIPTION CAP., 10F, 50V, 20% TO 80%, Y5V, 1210 CAP., 47F, 10V, 10%, X7R, 1210 CAP., 4.7F, 6.3V, 10%, X7R, 0603 CAP., 0.1F, 25V, 10%, X7R, 0402 CAP., 10F, 10V, 10%, X5R, 0603 CAP., 150F, 6.3V, 20%, X5R, 1210 CAP., 4.7F, 50V, 10%, X7R, 0805 CAP., 1F, 50V, 10%, X5R, 0805 9 1 C9 CAP., 22pF, 50V, 5%, C0G, 0402, AEC-Q200 MANUFACTURER/PART NUMBER AVX CORPORATION, 12105G106ZAT2A MURATA, GRM32ER71A476KE15L SAMSUNG, CL10B475KQ8NQNC MURATA, GRM155R71E104KE14D MURATA, GRM188R61A106KE69D SAMSUNG, CL32A157MQVNNNE MURATA, GRM21BZ71H475KE15L MURATA, GRM219R61H105KA73D MURATA, GCM1555C1H220JA16J 10 21 E1-E18, E20-E22 CONN-PCB SOLDER TERMINAL, TEST POINT TURRET, 0.094 MTG. HOLE PCB 0.062 THK MILL-MAX, 2501-2-00-80-00-00-07-0 11 8 JP1-JP8 CONN-PCB 3-POS UNSHROUDED HDR SINGLE ROW ST, 5.84mm POST HEIGHT, 2.54mm SAMTEC INC., TSW-103-07-F-S SOLDER TAIL, 2.54mm PITCH 12 1 CONN-PCB 12-POS MALE HDR SHROUDED P1 DOUBLE ROW ST, 2mm PITCH, 2.50mm MOLEX, 87831-1241 SOLDER TAIL 13 1 PCB1 PCB, EVAL-LTM4719-AZ 14 2 R1, R2 RES., 1M, 1%, 1/10W, 0402, AEC-Q200 15 1 16 2 R10 R11, R12 RES., 47.5k, 0.1%, 1/10W, 0402 RES., 1M, 5%, 1/10W, 0402, AEC-Q200 17 7 R6, R7, R14, R15, R21, R24, R25 RES., 0 JUMPER, 1/16W, 0402, AEC-Q200 18 1 R16 RES., 549k, 1%, 1/16W, 0402 19 1 R17 RES., 100k, 5%, 1/10W, 0402, AEC-Q200 20 1 R18 RES., 124k, 1%, 1/16W, 0402 21 2 R22, R23 RES., 4.99k, 1%, 1/10W, 0402, AEC-Q200 22 2 R26, R27 RES., 10k, 1%, 1/10W, 0402, AEC-Q200 ADI APPROVED SUPPLIER, 08_070955C PANASONIC, ERJ-2RKF1004X VISHAY, TNPW040247K5BEED PANASONIC, ERJ-2GEJ105X YAGEO, AC0402JR-070RL YAGEO, RC0402FR-07549KL PANASONIC, ERJ-2GEJ104X YAGEO, RC0402FR-07124KL PANASONIC, ERJ-2RKF4991X PANASONIC, ERJ-2RKF1002X analog.com Rev. 0 7 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ ITEM QTY 23 2 REFERENCE PART DESCRIPTION R4, R9 RES., 0 JUMPER, 1/10W, 0402, AEC-Q200 24 1 R5 RES., 0 JUMPER, 3/4W, 1206, AEC-Q200, HIGH POWER 25 1 U1 IC-ADI DUAL-INPUT, LOW-NOISE STEP-DOWN Module REGULATOR 26 1 U2 IC EEPROM 2-KBIT I2C SERIAL EEPROM 400kHZ Required Circuit Components 1 1 C13 2 1 C15 3 1 C17 CAP., OPTION, 0603 CAP., OPTION, 0402 CAP., OPTION, 8mm × 11.9mm 4 5 R3, R8, R13, R19, R20 RES., OPTION, 0402 Hardware: For Evaluation Board Only 1 4 STANDOFF, BRD SPT SNAP FIT, 12.7mm LENGTH 2 8 XJP1-XJP8 CONN., SHUNT, FEMALE, 2-POS, 0.100 PITCH MANUFACTURER/PART NUMBER PANASONIC, ERJ-2GE0R00X VISHAY, CRCW12060000Z0EAHP ANALOG DEVICES, LTM4719IY#PBF MICROCHIP TECHNOLOGY, 24LC025-I/ST KEYSTONE, 8833 SAMTEC, SNT-100-BK-G analog.com Rev. 0 8 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ Schematic EVAL-LTM4719-AZ analog.com Rev. 0 9 of 11 Evaluation Board User Guide EVAL-LTM4719-AZ Ordering Information PART EVAL-LTM4719-AZ TYPE The evaluation board features the LTM4719, a 42V dual input, low noise 150mA µModule regulator with an I2C battery health monitor. Revision History REVISION NUMBER 0 REVISION DATE 01/25 Initial release DESCRIPTION PAGES CHANGED -- analog.com Rev. 0 10 of 11 Evaluation Board User Guide Notes EVAL-LTM4719-AZ ALL INFORMATION CONTAINED HEREIN IS PROVIDED "AS IS" WITHOUT REPRESENTATION OR WARRANTY. NO RESPONSIBILITY IS ASSUMED BY ANALOG DEVICES FOR ITS USE, NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THIRD PARTIES THAT MAY RESULT FROM ITS USE. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. NO LICENSE, EITHER EXPRESSED OR IMPLIED, IS GRANTED UNDER ANY ADI PATENT RIGHT, COPYRIGHT, MASK WORK RIGHT, OR ANY OTHER ADI INTELLECTUAL PROPERTY RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS, IN WHICH ADI PRODUCTS OR SERVICES ARE USED. TRADEMARKS AND REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS. ALL ANALOG DEVICES PRODUCTS CONTAINED HEREIN ARE SUBJECT TO RELEASE AND AVAILABILITY. analog.com Rev. 0 11 of 11