ISL65426 Industrial & Communication Product Line Company - - PowerPoint PPT Presentation

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ISL65426 Industrial & Communication Product Line Company - - PowerPoint PPT Presentation

Feb 21, 2023 129 likes •302 views

ISL65426 Industrial & Communication Product Line Company Confidential Intersils Integrated FET Value Proposition High level of integration Internal MOSFETs (synchronous buck regulators) Some include PGood (power OK)

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SLIDE 1

Company Confidential

ISL65426

Industrial & Communication Product Line

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SLIDE 2

Company Confidential Page 2

Intersil’s Integrated FET Value Proposition

  • High level of integration

– Internal MOSFETs (synchronous buck regulators) – Some include PGood (power OK) function – Newer generation devices include up to three outputs

  • Various switching frequency choices

– Up to 1.5MHz for smaller BOM components – Programmable down to 200kHz for high efficiency (up to 95%)

  • Various output current choices

– 600mA to 6A - can support several applications

  • Additional features

– OC, UVLO and temperature shutdown protection features – External SYNC function – Voltage tracking and sequencing capability

  • Various package options

– QFN, HTSSOP, MSOP, DFN

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SLIDE 3

Company Confidential Page 3

ISL65426: Typical Applications

  • Digital Voltmeters
  • POL Modules
  • Barcode Scanners
  • Portable Test Equipment
  • Portable Medical Devices
  • Two-way Radios
  • SFP (Networking)
  • Spectrum Analyzers
  • Oscilloscopes
  • GPS Navigators
  • FPGA/CPLD Power

Solutions

  • Learning Language

Machine

  • Integrated Gear Motors
  • Copy Machines
  • Server Blades
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SLIDE 4

Company Confidential Page 4

Selling Points

  • “One-chip” power solution vs discrete solution

– The flexible dual output architecture can support multi-rail power requirements with one IC

  • Provides a cost-effective and compact solution as opposed to using

discrete solutions for each output rail

  • Complete programmability of output power

– Service all your current requirements (up to 6A) with one IC

  • Option of using a single part across the board for different current

requirements

– Supports all the output voltage requirements with a single IC

  • High switching frequency and high efficiency

– Smaller external BOM components

  • Current mode control

– Provides better transient response

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SLIDE 5

Company Confidential Page 5

ISL65426: 6A Dual Synchronous Regulator

  • VIN 2.375V to 5.5V

– 6A combined IOUT

  • PWM fixed and adjustable output

voltage options

– PWM1: 1.8V, 1.5V, 1.2V or 0.6V – PWM2: 3.3V (VIN=5V), 2.5V, 1.8V

  • r 0.6V
  • Key features

– User-partitioned power blocks – 180° out-of-phase operation – Startup in a pre-biased load – Independent output Soft-start and enable – Stable all-ceramic solutions – High efficiency: 95% – ±1% system accuracy over temperature

  • Package: 5x10 QFN
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SLIDE 6

Company Confidential Page 6

Configuring the ISL65426

SOFT START COMPENSATION EA GM SLOPE COMPENSATION GATE DRIVE CURRENT SENSE LXx PVINx CONTROL LOGIC PWM FB2 OV UV PGOOD2 POWER-ON RESET (POR) PWM REFERENCE 0.60V POWER DEVICE CONFIG POWER GOOD SOFT START COMPENSATION EA GM SLOPE COMPENSATION GATE DRIVE CURRENT SENSE LXx PVINx CONTROL LOGIC PWM FB1 UV PGOOD1 POWER GOOD VCC GND PVINx POR EN1 EN2 V2SET1 V2SET2 V1SET1 V1SET2 OUTPUT VOLTAGE CONFIG OUTPUT VOLTAGE CONFIG THERMAL MONITOR EPAD GND EPAD GND SOFT START EN ISET1 ISET2

ISL65426 Features: Programmable Output Voltage

  • 0.9V, 1.2V, 1.5V, and 1.8V
  • 0.9V, 1.8V, 2.5V, and 3.3V

Parallel the LX’s for: 2A:4A, 3A:3A, 4A:2A, 5A:1A Internal Current Mode Compensation Independent Power Good 180° Out-of-Phase Current Mode Control

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SLIDE 7

Company Confidential Page 7

Configuring the Output Voltage and Current

Output Voltage Configurations

3.3V high high 1.8V high high 2.5V low high 1.5V low high 1.8V high low 1.2V high low 0.6V low low 0.6V low low Channel 2 VOUT V2SET1 V2SET2 Channel 1 VOUT V1SET1 V1SET2

Output Current Configurations

LX1, LX3, LX4, LX5, LX6 5A LX2 1A x x Invalid LX Configurations: SS Prevented LX3, LX4, LX5, LX6 4A LX1, LX2 2A LX5 1A LX1, LX2, LX3, LX4, LX6 5A 1 LX5, LX6 2A LX1, LX2, LX3, LX4 4A 1 LX4, LX5, LX6 3A LX1, LX2, LX3 3A 1 1 Channel 2 Connections IOUT2 Channel 1 Connections IOUT1 I2SET I1SET

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SLIDE 8

Company Confidential Page 8

Voltage Monitoring and Supply Sequencing

Separate Enable and PGOOD signals allows individual control and monitoring

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SLIDE 9

Company Confidential Page 9

Typical Circuit

Dual Input Supply 4A:2A Configuration

EN1 EN2 EN PG2 PG1 V2SET2 IS ET1 V 1SET1 PGND FB2 V1S ET2 ISET2

100 µF C3 L2 1.0µH 1.8V 0.1µF C5 3.3V 10µF C4 5.0V 5.0V V C C PVIN6 PVIN5 L X 5 GND

FB1

200 µF C2 L1 0.6µH 5.0V 10µF C1 L X 1 PVIN1 PVIN2 L X 2 5.0V

ISL65426

L X 3 4A 2A L X 6 L X 4 PVIN3 PVIN4 3.3V

V2SET1

Low component count!!!

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SLIDE 10

Company Confidential Page 10

High Efficiency – System Runs Cooler

Low Vin=2.5V, Nominal Vin=3.3V, High Vin=5.5V

EFFICIENCY VS LOAD 1MHz VOUT1=1.8V ISL65426 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00% 70.00% 80.00% 90.00% 100.00% 0.000 1.000 2.000 3.000 4.000 Output Load (A) Efficency (%) 2.5Vin 3.3 Vin 5.5Vin

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SLIDE 11

Company Confidential Page 11

High Efficiency – System Runs Cooler

Low Vin=4.5V, Nominal Vin=5V, High Vin=5.5V

EFFICIENCY VS LOAD 1MHz VOUT2=3.3V ISL65426 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00% 70.00% 80.00% 90.00% 100.00% 0.000 1.000 2.000 3.000 Output Load (A) Efficency (%) 4.5Vin 5Vin 5.5Vin

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SLIDE 12

Company Confidential Page 12

Startup with Pre-Biased Output

There are 64 digital soft-start steps. Once in regulation, IC operates in CCM.

Figure 1-18. Start-up VOUT1 w/Pre-biased using EN.

Test Conditions: Vin=5V, VOUT1=1.80V:0A EN1=1

  • 4. PHASE1, M1-Zoom-in
  • f the PHASE1

3.

  • 2. VOUT1
  • 1. EN1

Pre-biased at 1.4V

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SLIDE 13

Company Confidential Page 13

Output Ripple – 1.8V and 3.3V Output

Test Conditions: Vin=5.5V, VOUT1=1.8V:4A VOUT2=3.3V:2A EN1=1 ; EN2=1 V1SET1=1; V1SET2=1 V2SET1=1; V2SET2=1

  • 4. OUT2 Ripple
  • 3. PHASE2
  • 2. OUT1 Ripple
  • 1. PHASE1

180° Out-of-Phase The 180° Out-of-Phase Operation of the two regulators reduce Output Ripple and EMI

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SLIDE 14

Company Confidential Page 14

Output Regulation

Output Regulation vs Load Current Output Regulation vs Input Voltage

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SLIDE 15

Company Confidential Page 15

Powering an FPGA/CPLD with ISL65426 FPGA

Core Voltage I/O Voltage Auxiliary Voltage Reset VREF ISL65426 VIN

PWM Output 1 PWM Output 2

ISL65426

PWM Output 1 PWM Output 2

DDR Memory VIN Supervisor Reference

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SLIDE 16

Company Confidential Page 16

Tools and Links

  • Parametric Tables www.intersil.com/products/pt/parametric_table_510.asp

– Complete parametric data for all devices – sort, download, search with parameters you define

  • Samples www.intersil.com/samples

– Order directly from our website or through your local sales rep

  • Online Cross Reference www.intersil.com/products/xref/index.asp

– Competitors’ devices are crossed to help you find the right replacement

  • Block Diagrams www.intersil.com/applications

– Integrated FETs can be found in many applications – find them in these design solutions

  • Engineering Support www.intersil.com/design

– Applications support, online FAQs, design models, document library