IC manufacturers Analog Devices

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Analog Devices LTC7150S | Demoboard LT Journal Aug 2018

20V, 20A Synchronous Step-Down Regulator

Overview

TopologyBuck Converter
Input voltage3.1-20 V
Switching frequency400-3000 kHz
Output 11 V / 20 A
IC revision1

Description

LT Journal Aug 2018The LTC.7150S is a high efficiency monolithic synchronous buck regulator capable of delivering 20A to the load. It uses a phase lockable controlled on-time constant frequency,current mode architecture. PolyPhase operation allows multiple LTC7150S regulators to run out-of-phase, which reduces the amount of input and output capacitors required. The operating supply voltage range is from 3.1V to 20V. The operating frequency is programmable from 400kHz to 3MHz with an external resistor. The high frequency capabilityallows the use of physically smaller inductor and capacitor sizes. For switching noise sensitive applications, the LTC7150S can be externally synchronized from 400kHz to 3MHz. The PHMODE pin allows the user control of the phase of the outgoing clock signal. The unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that operate at high frequencies while demanding fast transient response.The LTC7150S uses second generation Silent Switcher technology including integrated bypass capacitors to deliver a highly efficient solution at high frequencies with excellent EMI performance.

Features

  • Silent Switcher®2 Architecture for Low EMI
  • VIN Range: 3.1V to 20V
  • VOUT Range: 0.6V to 5.5V
  • Differential VOUT Remote Sense
  • Adjustable Frequency: 400kHz to 3MHz
  • PolyPhase® Operation: Up to 12 Phases
  • Output Tracking and Soft-Start
  • Reference Accuracy: 0.6V ±1% Over Temperature
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Accurate 1.2V Run Pin Threshold
  • Supports Forced Continuous/Discontinuous Modes
  • 42-Lead 6mm × 5mm × 1.3mm BGA Package

Typical applications

  • Distributed Power Systems / Point of Load Supply for ASIC, FPGA, DSP, μP
  • Server Power Applications

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(nH)
LR
(nH)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR
(A)
Z @ 1 GHz
(Ω)
H
(mm)
Type Samples
744308033SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCM SMT High Current Flat Wire Inductor 330 305 27.3 32 0.37 35 MnZn 25 6.8
74279226101SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-MPSB EMI Multilayer Power Suppression Bead 100 160 1100 MHz 8 150 2.3 High Current
Order Code Data­sheet Simu­lation
744308033SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

74279226101SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(nH)
LR
(nH)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR
(A)
Z @ 1 GHz
(Ω)
H
(mm)
Type Samples