DC-DC Power Management ICs IRU LDO and Switching Controller ICs

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DC-DC Power Management ICsIRU LDO and Switching
Controller ICs

• Odile Ronat
• Director of Outbound Marketing

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Presented By

• Odile Ronat, Director Outbound Marketing
• oronat1_at_irf.com or 1(310)252-7139
• Over 14 years of technical sales and marketing
  management experience
• Responsible for product launches, promotion and
  sales training for all core products (discretes
  ICs)(excludes High Power, Hi-Rel and EMS)

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Training Objectives/Products

• Review LDO and Switching Controller IC product
  line
• Applications and Target Markets
• Sales Tips
• Review of Voltage Regulators
• LDO family
• PWM IC family
• Competition
• Introduce new IRU1120 and IRU3038
• Preview of upcoming IRU3046/IRU3047

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Target Applications

• Step-down Voltage Regulators
• Up to 7.5A using LDOs
• 1 to 20A using PWM switching controller ICs and
  MOSFETs
• Roadmap up to 100A
• Single and multiple power output requirements

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Target Markets

• PC and related applications
• Motherboards
• Memory cards
• I/O, Hot Swap, USB, RS-232
• Printers
• POS terminals
• Industrial PC
• LCD, CRT Monitors
• LED Display
• Graphics cards
• Sound cards
• Disk drives
• CD-ROM readers/writers

• Networking and telecom
• Wireless modems
• Cable modems
• xDSL boxes
• Ethernet card
• LAN/WAN interfaces
• Home LAN
• Routers
• Switches

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Target Markets

• Consumer Electronics
• Set-top boxes
• Game stations
• Digital cameras and docking stations
• GPS
• HDTV , Flat panel TV
• Internet appliances
• DVDs

• Security Systems(Alarms-Micro Controller
  based-4/8/16 bits)
• Projectors
• Industrial Controls (Microcontroller based)
• Power Supplies (Silver Box)
• On-board DC-DC converters

Any application that uses microprocessor,
microcontroller, DSP or ASIC requiring local
on-board converter.
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Design Wins Examples

• Graphic cards
• Nvidia, ATI, Matrox
• IRU3037, IRU3004, IRU1117 and IRU1205
• PC
• AMD K8 Desktop (IRU3037CSTR and IRU1175CSTR)
• Motherboards
• Intel (IRU1150)
• Elite (IRU3013)
• Asus
• Disk drives
• Western Digital (custom products)
• POS terminal
• Hypercom (IRU1117 and IRU1205)
• Set-top box
• Keen Personal Media (IRU1205-33, IRU1206-33 and
  IRU1209)
• Telecom
• RLX (IRU3037 for the GTL 1.25V and 2.5V rail and
  IRU3038 for termination voltage)

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Sales Tips

• Target new designs where architecture is not
  determined
• Find out systems requirements
• Set of input voltages and currents available
• Typically 12V and/or 5V
• Output current and voltage rail requirements
• Typical output voltage 3.3V, 2.5V, 1.8V
• Special feature set needed in the system
• PowerGood, Overcurrent protection, VID,
  Overvoltage protection
• Second order requirements
• Thermal performance, transient requirements,
  space requirements

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Sales Tips (Advanced)

• Draw block diagram to illustrate system
  requirements
• Use IRU selection guide to place IRU product,
  combining blocks when appropriate
• Add external components where required to deliver
  power (MOSFETs, diodes, etc.)
• When you are stocked, call the FAE!

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Set Top Box with IRU Devices
Linear Regulators
5Va,3Va, SB 5V.
12V
IRU3037
5V _at_ 4A System, LAN..
IRU3011
Vcore _at_ 14A CPU
IRU3037
3.3V _at_ 3A System
Vtt, for Pentium CPU
LDO
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LCD Monitor Using IRU3007
12V
IRU3037
5V _at_ 3A
IRU3037
3.3V _at_ 3A
LDO IRU1120
2.5V _at_ 1A
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Next Gen CPU Motherboard
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Finding Out System Requirements for Information
Appliance (I.A.)

• Yes, I will need some voltage regulators.
• My bus is 12V and I need several 5 V and 3.3V
  outputs.
• I looks like I will need
• 4A _at_ 5V for the modem,
• 2A _at_3.3V for the system bus,
• 3A _at_ Vcore for the CPU,
• 2A_at_ 5V.

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Lay-Out System Requirements for Information
Appliance (I.A.)
12V
5V _at_ 4A System, Modem,. .
3.3V _at_ 2A System
Vcore _at_ 3A CPU
LDO
LDO
SB5V_at_ 2A
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Information Appliance (I.A.) Using IRU 3007
12V
IRU3037
5V _at_ 4A System, Modem,. .
IRU3037
3.3V _at_ 2A System
Vcore _at_ 3A CPU
LDO
LDO
SB5V_at_2A
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IRU product sale vs. MOSFET sale

• MOSFET sale
• Audience component engineer
• Design stage
• Circuit design is at the stage where all
  components are being specified
• Requirements
• Voltage
• RDS(on)
• Package

• IRU sale
• Audience system design engineer
• Design stage
• System requirements are specified such as bus
  voltage available and IO and Vout requirements
• Requirements
• Features required (number of outputs, PGOOD, etc)
• Bus voltage available
• IO and Vout

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Questions to Qualify Customers

• Does your design require power management?
• What bus voltages do you have available?
• What output rail currents and voltages do you
  require?
• What other features does your circuit require?

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Voltage Regulators

• Provide clean regulated voltages to various loads
  such as micros, motor controllers, low voltage
  logic circuits and drivers while offering
  protection and filtering from electrical
  transients and noise.

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Voltage Regulators The Four Types
ü
ü
ü

• Regulator has power device on chip
• Controller has power device off chip

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LDO Low Drop-Out Linear Voltage Regulators

• Regulate input DC voltage to a lower fixed or
  programmable DC voltage
• Linear control
• Comparator compared Vout to Vref
• Adjust transistor proportionally to meet voltage
  setting
• Very accurate
• Handle load and line changes well
• Drop-out voltage Vin-Vout
• LDO have lt1.5V Drop-out voltage
• Very LDO have lt1.0V Drop-out voltage

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Switching Voltage Controllers

• Chops input voltage into pulses
• The switch applies the input voltage to the
  filter only when turned on
• Controller ensures that pulses add up to required
  Vout
• The filter averages the switching voltage to
  produce
• VoutVin duty cycle
• Duty cycle time switch is on
• MOSFET operates efficiently in its saturated state

Filter
Internal or External Device
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Voltage Regulator Selection

• Linear Regulators
• Simple and cheap (fewer pins external
  components)
• Efficiency 50 to 70, generate a lot of heat
• The higher the Voltage Drop-out the lower the
  efficiency
• Limited output capability Used for low currents
  (IRU up to 7.5A)
• Easy to design
• Dual output available (IRU1260/IRU2161)
• Low Noise
• Switching Regulators
• High efficient 80
• Higher current
• More complex design
• More expensive
• Noise/EMI/EMC

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Voltage Regulators
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IRU Nomenclature

• Always order sample with COMPLETE part number,
  including temperature range, package and other
  options

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Simplified IRU LDO Selection Single Output
NEW
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IRU LDO Package Types
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IRU LDO Pricing
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New product IRU1120

• Stable with Ceramic Capacitors
• Smaller, higher performance
• 2A Adjustable LDO
• 1.3V dropout voltage
• Internal Thermal Shutdown
• 2 Voltage Reference Initial Accuracy
• Available in 5-Pin Ultra Thin-Pak
• Output current limiting
• Differentiation from competition
• Dual Input Supply
• Stable with Ceramic Capacitors
• 0.55 disti cost
• Sample available Mar 02
• Demo board available Mar 02

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Dual Output IRU LDO

• IRU1260
• 6A (1.3V dropout), 1A (0.6V dropout) Output
• Adjustable
• 7-pin package (IRU1261CPTR _at_ 0.99 disti cost)
• IRU1261
• 6A, 1A dual ouput
• 1.5V and 2.5V fixed output
• 5-pin package (IRU1260CPTR _at_ 0.99 disti cost)
• Application simple logic, rambus memory, graphic
  chips

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LDO Competition

• Cross reference includes over 500 parts
• Linear Tech
• First company to mass market LDO
• Focus on high-end LDO
• Semtech
• Strong presence in LDO
• Aggressively priced
• Fairchild, AMS, STMicro
• Aggressive Pricing
• Sipex/Alpha Semiconductor
• Very aggressive in niche market
• National, ON Semi, Linfinity
• Micrel IRU120x competition
• Pin Compatible with MIC39100/101/102 series
• 1206-xx with MIC39100-xx
• 1207 with MIC39101
• 1209 with MIC39102

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PWM Switching Controller

• Increase efficiency to 80
• Reduce drop-out voltage
• Synchronous vs. non-synchronous

Control FET
Sync FET

• Non- Synchronous Regulator
• Simpler
• Less efficient
• For Vout 2 to 5V

• Synchronous Regulator
• More efficient
• For Vout 1.8 and below

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IRU PWM Controllers and Combos
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Feature Definition

• 5-bit DAC
• Set output voltage with 5-bit digital input
  signal
• PowerGood
• Diagnostic feedback signal
• Soft start
• Feature to limit in-rush current and overheating
• Short-circuit protection
• Device is protected in conditions of
  short-circuit
• Temperature shut-down
• Shut down above max temperature and automatically
  restarts when temperature is low enough
• Under Voltage Lock-Out (UVLO)
• Shuts down the IC when input voltage is below
  limit
• Protect IC and circuit
• Check datasheet for actual features

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IRU3013 PWM Switching Controller for VRM 8.5
5-bit DAC

• Single chip solution for 4 regulated output
• VCORE, 1.2V AGTL, 1.8V, uncommitted LDO
• 5-bit DAC for 1.050 to 1.825Vout
• Power Good function
• Driver Capability (70ns for 3000pF load)
• 220kHz

• Loss-less short circuit protection
• Fixed frequency operation and 100 duty cycle
  with changing load
• Minimum external components required
• No external compensation required

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Matched Chipset for VRM 8.5

• High volume application Intels new Ultra Low
  Voltage Pentium III processor for blade servers
• Up to 2 higher efficiency at the industry-low
  1.1 volts required by Intels new processors
  compared to the nearest competitive solution.

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IRU3037 8-Pin PWM Synch Controller

• Synchronous Switching Regulator Controller in SO8
  pin package.
• Operation from 4V to 25V Vin-max 30V.
• Fixed Frequency Internal 200kHz Oscillator
  (IRU3037) or 400kHz (IRU3037A)
• 0.5A peak output MOSFET gate drive capability
• Simple and low cost

VOUT 1.8V
5V
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Matched Chipset for 5V and 12V Regulators

• Using IRU3037 IC
• Easy selection
• Optimized for cost effectiveness at competitive
  efficiency
• All single MOSFETs are 20V SO-8.
• Use optimized Control and Sync FET for best
  efficiency within tight budget
• Use Dual MOSFET to save space
• FREE Sample Pak Available

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IRU3038 Sync Buck Controller with Tracking Voltage

• Synchronous PWM Controller
• Uncommitted Error Amplifier for Voltage Tracking
• Programmable Switching Frequency from 200 to
  400KHz
• Single 5V or 12V Supply Operation
• Available in 14 Pin SOIC and TSSOP Package

VTT ½ VDDQ 3

• Application
• DDR Termination Voltage
• Vttgt2A

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Tracking Voltage

• VTT tracks VDDQ within 3 to improve data rate
  and to minimize errors

VDDQ changes from 2.5V to 2.87V
VDDQ
VTT
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DDR Memory Using IRU3037 and IRU3038

• IRU3037 for VDDQ
• IRU3038 for VTT
• Simple
• Low cost
• Scalable to higher current

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Additional competitors include TL5002 8-Pin PWM
controller from TI. This product however requires
an external driver chip which increases the
complexity and the cost of the solution.
MAX1809 The MAX1809 is an integrated product
combining the PWM controller, FETs and the error
amplifier. It is suitable for lower currents (up
to 3A) and therefore has more limited
applications since the design is not scalable.
Input voltages are from 3.3-5.5V. FAN5236 The
FAN5236 from Fairchild Semiconductor is avalable
in a QSOP28 packag. It provides a single chip
solution for both VDDQ and Vtt. Though featured
in PCIM, September 2001, there is no datasheet
available yet on the web.
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IRU3033 Non-Sync PWM Switcher Linear Controller
IC

• Simple Hysteretic Switching Controller and LDO
  Controller in an 8 lead SOIC Package
• Fastest transient response of any controller
  method (0 - 100 Duty Cycle in 100 ns)
• No Compensation needed
• On board MOSFET driver
• 1 internal voltage reference
• Internal Under Voltage Lockout protects MOSFET
  during start-up

N
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Switching Controller Competition

• Semtech
• Very Strong at Intel Hillsboro, Acer, Microstar
• SC1182/1185, SC2425,SC1146
• Linear Tech
• Strong market share and great brand recognition
• National Semi
• Intersil(Harris)
• Strong at Asus, Gigabyte, Compaq(Mitac)
• HIP6021,HIP6018,HIP6019, HIP6301
• Fairchild(Raytheon),
• Raytheon with good presence at Gigabyte with
  FAN5091,
• ON Semi(Cherry)
• recent penetration at Asus

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Compelling Reasons to Buy From IR

• All power semiconductor parts from 1 source
• Complementary MOSFETs and other power
  semiconductors
• Very cost competitive for simple applications
• Roadmap for advanced power management ICs and
  integration with matched IC and MOSFETs.

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Upcoming Product IRU3046

• Dual Sync Controller with LDO Controller in
  24-Pin SOIC or TSSOP
• Dual Sync Controller offers out of phase
  operation
• Can be configured as 2 independent or 2-Phase PWM
  controller
• Programmable current sharing in 2-phase
  configuration to combine power from 5V and 12V
  bus to reach total power
• Programmable frequency up to 400kHz
• Power Good Output
• Synchronizable with external clock to minimize
  EMC
• Applications Current up to 20A, DDR VDDQ and VTT
  with a single IC

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IRU3046

• Samples April 02
• Demo board April 02
• Pricing

P/N 10K Pricing
IRU3046CWTR 1.17
IRU3046CFTR 1.17
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• Dont compete with multiphase controller with VID

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Sales Tools

• IRU3037 Sample Paks
• Demo board available
• Contact local FAE
• Cross reference available on training CD-ROM and
  intranet
• DC-DC Power Management Databook CD-ROM
• Available in Mar 02
• Power Design DC-DC Solutions
• DC-DC Selector Guide
• Web page http//www.irf.com/product-info/pmic/
• Disti registration program
• A number of products are on the registration
  program

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Contacts
Volume Pricing SQPD SQPDSQPD_at_irf.com
Technical Support /Demo board FAE
Samples Sample Warehouse www.irf.com BUY IR PRODUCTS Sample1_at_irf.com
US Sales Champion Nick Cataldo 1(203)355-1228 Ncatald1_at_irf.com
Others Sales Questions Amir Asvadi 1(949)453-1008 x206 Aasvadi1_at_irf.com
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Ordering Samples Through www.irf.com

• Go to www.irf.com
• Click on BUY IR PRODUCTS and sign in
• Click on SHOPPING CARTS (top of page)
• Click on CREATE NEW SAMPLE REQUEST
• Option to change your default address to another
  ship-to address.
• Delivery 24 to 48hr in US, 2 to 3 days overseas

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Action Items

• Review customer that buy 30V MOSFETs for DC-DC
  and investigate opportunity for PWM switching
  controller and LDOs
• Identify designers of systems listed on slide 5
  and 6 and introduce product line to them using
  selector guides
• Get feature requirements from potential customers
  using questions on slide 17
• Provide samples or demo board
• CLOSE THE BUSINESS!