MPM3620 MPS | Alldatasheet

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MPM3620 24V Input 2A Module Synchronous Step-Down Converter with Integrated Inductor MPM3620 Rev. 1.1 www.MonolithicPower.com 1 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The MPM3620 is a synchronous rectified, step- down module converter with built-in power MOSFETs, inductor, and two capacitors. It offers a compact solution that requires only 5 external components to achieve a 2A continuous output current with excellent load and line regulation over a wide input-supply range. Also, it provi des fast load transient response. An external AAM pin provides selectable power-save mode and forced PWM mode. Full protection features include over-current protection(OCP) and thermal shut down(TSD). MPM3620 eliminates design and manufacturing risks while dramatically improving time-to- market. The MPM3620 is available in a space-saving QFN-20 (3mmx5mmx1.6mm) package.

FEATURES

  • 4.5V-to-24V Operating Input Range
  • 2A Continuous Load Current
  • 200 μA Low Quiescent Current
  • 90m Ω/40mΩ Low RDS(ON) Internal Power MOSFETs
  • Integrated Inductor
  • Integrated V CC and Bootstrap Capacitors
  • External AAM for Power-Save Mode Programming
  • Over-Current Protection and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in QFN-20 (3mmx5mmx1.6mm) Package
  • Total solution size 6.7mmx6.3mm

APPLICATIONS

  • Industrial Controls
  • Medical and Imaging Equipment
  • Telecom and Networking Applications
  • LDO Replacement
  • Space and Resource-limited Applications All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Load Current VOUT =3.3V LOAD CURRENT (A) 100 0.01 0.1 1 10 12VIN 19VIN24VIN

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 2 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

ORDERING INFORMATION

Part Number* Package Top Marking MPM3620GQV QFN-20 (3mmx5mmx1.6mm) See Below * For Tape & Reel, add suffix –Z (e.g. MPM3620GQV–Z); TOP MARKING MP: MPS prefix: Y: year code; W: week code: 3620 first four digits of the part number; LLL: lot number; M: module PACKAGE REFERENCE

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 3 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. ABSOLUTE MAXIMUM RATINGS (1) -0.3V (-5V for <10ns) to 28V (30V for <10ns) Continuous Power Dissipation (TA = +25°C) (3) Recommended Operating Conditions (4) (5) Operating Junction Temp. (TJ). -40°C to +125°C Thermal Resistance (6) θJA θJC Notes: 1) Exceeding these ratings may damage the device. 2) For additional details on EN pin’s ABS MAX rating, please refer to the “Enable Control” section on page 14. 3) The maximum power dissipation is a function of the maximum junction temperature T J (MAX), the junction-to-ambien t thermal resistance θJA, and the ambient temperature T A. The maximum continuous power dissipation at any ambien t temperature is calculated by P D (MAX) = (T J (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will produce an excessive die temperature, causing the converte r to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 4) The device is not guaranteed to function outside of its operating conditions. 5) In practical design, the minimum V OUT is limited by the minimum on-time. To allow a margin, a 50ns on-time is recommended for calculating. To set the output voltage above 5.5V, please refer to the application information on page 17. 6) Measured on JESD51-7, 4-layer PCB.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 4 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN=12V, TJ=-40°C to +125°C (7), typical value is tested at TJ=+25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Supply Current (Shutdown) I IN V EN = 0V,TJ=25°C 1 μA Supply Current (Quiescent) I q VFB = 1V, VAAM=0.5V 0.2 mA VFB = 1V, VAAM=5V 0.7 HS Switch-On Resistance HS RDS-ON VBST-SW=5V 90 m Ω LS Switch-On Resistance LS RDS-ON VCC =5V 40 m Ω Integrated Inductor Inductance(8) L 1 µH Inductor DC Resistance L DCR T J=+25°C 25 45 65 m Ω Switch Leakage SW LKG V EN = 0V, VSW =12V 1 μA Current Limit (8) I LIMIT Under 40% Duty Cycle 3.8 4.8 A Oscillator Frequency f SW VFB=0.75V, TJ=+25°C 1600 2000 2400 kHz VFB=0.75V,T J=-40°C to +125°C 1500 2000 2500 kHz Fold-Back Frequency f FB V FB<400mV 0.3 f SW Maximum Duty Cycle D MAX V FB=700mV 77 % Minimum On Time (8) τON_MIN 35 ns Feedback Voltage V FB TJ=+25°C 786 798 810 mV TJ=-40°C to +125°C 782 798 814 mV Feedback Current I FB V FB=820mV 10 50 nA AAM Source Current IAAM TJ=+25°C 5.6 6.2 6.8 μA TJ=-40°C to +125°C 4.3 6.2 7.9 μA EN Rising Threshold V EN_RISING 1.15 1.4 1.65 V EN Falling Threshold V EN_FALLING 1.05 1.25 1.45 V EN Input Current I EN V EN=2V 2 μA VIN Under-Voltage Lockout Threshold—Rising INUVVth 3.65 3.9 4.15 V VIN Under-Voltage Lockout Threshold—Hysteresis INUVHYS 650 mV VCC Regulator V CC 5 V VCC Load Regulation I CC=5mA 1.5 % Soft-Start Time t SS V OUT from 10% to 90% 1.5 ms Thermal Shutdown (8) 150 °C Thermal Hysteresis (8) 20 °C Notes: 7) Not tested in production; guaranteed by over-temperature correlation. 8) Guaranteed by characterization test.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 5 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS VIN = 12V, VOUT = 3.3V, TA = 25°C, unless otherwise noted. Load Regulation VOUT =5V Efficiency vs. Load Current VOUT =3.3V Efficiency vs. Load Current VOUT =2.5V Load Regulation VOUT =2.5V Load Regulation VOUT =3.3V Load Regulation VOUT =1.8V Efficiency vs. Load Current VOUT =1.2V Efficiency vs. Load Current VOUT =1.8V LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A)LOAD CURRENT (A)LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) Efficiency vs. Load Current VOUT =5V 100 0.01 0.1 1 10 -0.5 0.5 0 0.5 1 1.5 2 100 0.01 0.1 1 10 -0.5 0.5 0 0.5 1 1.5 2 100 0.01 0.1 1 10 -0.5 0.5 0 0.5 1 1.5 2 100 0.01 0.1 1 10 -0.5 0.5 100 0.01 0.1 1 10 12VIN 19VIN 24VIN 12VIN 19VIN 24VIN 12VIN 5VIN 19VIN24VIN 12VIN 5VIN 19VIN 24VIN 12VIN 5VIN 19VIN 12VIN5VIN 19VIN24VIN 5VIN 24VIN 19VIN 12VIN 5VIN 19VIN 12VIN 5VIN 12VIN

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 6 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS (continued) VIN = 12V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 7 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS (continued) VIN = 12V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 8 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS (continued) VIN = 12V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 9 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS Performance waveforms are captured from the evaluation board discussed in the Design Example section.VIN = 12V, VOUT = 3.3V, COUT=22µF, TA = 25°C, unless otherwise noted.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 10 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) Performance waveforms are captured from the evaluation board discussed in the Design Example section.VIN = 12V, VOUT = 3.3V, COUT=22µF, TA = 25°C, unless otherwise noted.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 11 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. PIN FUNCTIONS Package Pin # Name Description 1 FB Feedback. Connect FB to the tap of an external resistor divider from the output to AGND to set the output voltage. To prevent current-limit runaway during a short-circuit fault, the frequency foldback comparator lowers the oscillator frequency when the FB voltage is below 400mV. Place the resistor divider as close as possible to FB. Avoid placing vias on the FB traces. 2 VCC Internal 5V LDO Output. The module integrates a LDO output capacitor, so there is no need to add an external capacitor. 3 AGND Analog Ground. Reference ground of logic circuit. AGND is connected internally to PGND, so there is no need to add any external connections to PGND. 4, 5, 6 SW Switch Output. A large copper plane is recommended on pins 4, 5, and 6 to improve thermal performance. 7, 8, 9 OUT Power Output. Connect load to OUT. An output capacitor is needed. 10, 15, 19, 20 NC No Connection. DO NOT CONNECT. NC must be left floating. 11 BST Bootstrap. A bootstrap capacitor is integrated internally, so an external connection is not needed. 12, 13, 14 PGND Power Ground. Reference ground of the power device. PCB layout requires extra care (please see recommended “PCB Layout Guidelines” on page 19). For best results, connect to PGND with copper and vias. 16 IN Supply Voltage. IN supplies power for the internal MOSFET and regulator. The MPM3620 operates from a +4.5V to +24V input rail. It requires a low ESR and low- inductance capacitor to decouple the input rail. Place the input capacitor very close to IN and connect it with wide PCB traces and multiple vias. 17 EN Enable. EN=high to enable the module. Leave EN floating or connect it to GND to disable the module.

18 AAM

Advanced Asynchronous Modulation. AAM sources a 6.2 μA current from an internal 5V supply. Float AAM or drive AAM high (>2.5V) to force the MPM3620 to operate in continuous conduction mode (CCM). If AAM mode is required under light load, connect a resistor to ground to program AAM voltage in the range of 0V to1V.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 12 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. FUNCTIONAL BLOCK DIAGRAM AAM OUT AGND PGND EN Figure 1: Functional Block Diagram

2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. about 3.9V while its falling threshold is 3.25V. Figure 4. 6.5V Zener Diode Connection prevent damage to the Zener diode. EN input current to less than 100µA. internally to 1.5ms (VOUT from 10% to 90%). following the soft-start slew rate. threshold (50% below the reference, typically). hiccup mode to re-start the part periodically. current condition is removed. power supply resumes operation.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR MPM3620 Rev. 1.1 www.MonolithicPower.com 16 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

APPLICATION INFORMATION

Setting the Output Voltage The external resistor divider sets the output voltage (see “Typical Application” on page 1). Choose R1 (refer to Table 1); R2 is then given by: OUT V 0.798V Figure 7. Feedback Network Table 1. Recommended Parameters for Common Output Voltages

2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Table 1. Recommended Parameters For Common Output Voltages(continued) 9) V OUT PFM ripple is tested when Io=0A, for those specs noted (12), the ripple is tested when Io=1mA. 10) VOUT PWM ripple is tested when Io=2A. 11) Load transient from 1A to 2A, slew rate =0.8A/µs. a large divider resistor value. A 10µA load current can pull the output voltage to a normal regulation level. to reduce the output-ripple voltage. achieve better thermal performance.

2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. output capacitor, and L1=1μH.

  1. Use large ground plane to connect directly
  2. The high-current paths (PGND, IN, and
  3. Place the external feedback resistors next
  4. Keep the feedback network away from the

Application Circuits” on pages 21-23. Figure 11. Recommended PCB Layout

2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Table 2. Design Example Figure 13. The typical performance and circuit evaluation board datasheets.

2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Figure 18. VOUT=1V, IOUT=2A the output-voltage ripple is smaller than 15mV in PWM mode.

MPM3620 – SYNCHRONOUS STEP-DOWN MODULE WITH INTEGRATED INDUCTOR NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon w hen integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MPM3620 Rev. 1.1 www.MonolithicPower.com 24 2/12/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

PACKAGE INFORMATION

QFN-20 (3mmx5mmx1.6mm)