IR3507MTRPBF International Rectifier, IR3507MTRPBF Datasheet

IC XPHASE3 CONTROL 20-MLPQ

IR3507MTRPBF

Manufacturer Part Number
IR3507MTRPBF
Description
IC XPHASE3 CONTROL 20-MLPQ
Manufacturer
International Rectifier
Series
XPhase3™r
Datasheet

Specifications of IR3507MTRPBF

Applications
Processor
Current - Supply
4mA
Voltage - Supply
8 V ~ 28 V
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-MLPQ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
IR3507MTRPBFTR
DESCRIPTION
FEATURES IR3507 PHASE IC
APPLICATION CIRCUIT
The IR3507 Phase IC combined with an IR XPhase3
implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides
overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single
phase of a multiphase converter. The XPhase3
expensive, and easier to design while providing higher efficiency than conventional approaches.
Page 1 of 19
PHSOUT
DACIN
PHSIN
CLKIN
IOUT
PSI
VCCL
EAIN
12V
Power State Indicator (PSI) interface provides the capability to maximize the efficiency at light loads.
7V/2A gate drivers (4A GATEL sink current)
Converter output voltage up to 5.1 V (Limited to VCCL-1.4V)
Loss-less inductor current sensing
Feed-forward voltage mode control
Integrated boot-strap synchronous PFET
Only four external components per phase
3 wire analog bus connects Control and Phase ICs (VID, Error Amp, IOUT)
3 wire digital bus for accurate daisy-chain phase timing control without external components
Anti-bias circuitry prevents excessive sag in output voltage during PSI de-assertion
PSI input is ignored during power up
Debugging function isolates phase IC from the converter
Self-calibration of PWM ramp, current sense amplifier, and current share amplifier
Single-wire bidirectional average current sharing
Small thermally enhanced 20L 4 X 4mm MLPQ package
RoHS compliant
1
2
3
4
5
NOT RECOMMENDED FOR NEW DESIGNS
IOUT
PSI
DACIN
LGND
PHSIN
REPLACEMENT PRODUCT – IR3507ZPBF
IR3507
Figure 1 Application Circuit
IR Confidential
GATEH
BOOST
VCCL
CVCCL
SW
NC
TM
15
14
13
12
11
architecture results in a power supply that is smaller, less
TM
Control IC provides a full featured and flexible way to
CBST
RCS
XPHASE3
L
IR3507PbF
April 2, 2009
COUT
CCS
DATA SHEET
TM
PHASE IC
VOUT+
VOUT-

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IR3507MTRPBF Summary of contents

Page 1

NOT RECOMMENDED FOR NEW DESIGNS DESCRIPTION The IR3507 Phase IC combined with an IR XPhase3 implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides overall system control and interfaces with any number of “Phase” ...

Page 2

... NOT RECOMMENDED FOR NEW DESIGNS ORDERING INFORMATION Part Number IR3507MTRPBF * IR3507MPBF * Samples only ABSOLUTE MAXIMUM RATINGS Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Operating Junction Temperature… ...

Page 3

NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN 8.0V ≤ V ≤ 28V, 4.75V ≤ V ≤ 7.5V CCL ≤ PHSIN ≤1.5MHz ELECTRICAL CHARACTERISTICS The electrical characteristics involve the spread of values guaranteed ...

Page 4

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF PARAMETER PWM Comparator PWM Ramp Slope Vin=12V Input Offset Voltage Note 1 EAIN Bias Current 0 ≤ EAIN ≤ 3V Minimum Pulse Width Note 1 Minimum GATEH Turn-off Time Current Sense ...

Page 5

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF PARAMETER Body Brake Comparator Threshold Voltage with EAIN decreasing Threshold Voltage with EAIN increasing Hysteresis Propagation Delay OVP Comparator OVP Threshold Propagation Delay Synchronous Rectification Disable Comparator Threshold Voltage Negative Current ...

Page 6

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF PIN DESCRIPTION PIN# PIN SYMBOL PIN DESCRIPTION 1 IOUT Output of the Current Sense Amplifier is connected to this pin through a 3kΩ resistor. Voltage on this pin is equal to ...

Page 7

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF SYSTEM THEORY OF OPERATION System Description The system consists of one control IC and a scalable array of phase converters, each requiring one phase IC. The control IC communicates with the ...

Page 8

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF Frequency and Phase Timing Control The oscillator is located in the Control IC and the system clock frequency is programmable from 250kHz to 9MHZ by an external resistor. The control IC ...

Page 9

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF An additional advantage of the architecture is that differences in ground or input voltage at the phases have no effect on operation since the PWM ramps are referenced to VDAC. Figure ...

Page 10

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF Usually the resistor Rcs and capacitor Ccs are chosen so that the time constant of Rcs and Ccs equals the time constant of the inductor which is the inductance L over ...

Page 11

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF share loop is much slower than that of the voltage loop and the two loops do not interact. For proper current sharing the output of current sense amplifier should note exceed ...

Page 12

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF A synchronous rectification disable comparator is used to detect converter CSIN- pin voltage, which represents local converter output voltage. If the voltage is below 75% of VDAC and negative current is ...

Page 13

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF PSI ASSERT PHSIN PSI GATEH GATEL Debugging Mode If CSIN+ pin is pulled up to VCCL voltage, IR3507 enters into debugging mode. Both drivers are pulled low and IOUT output is ...

Page 14

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF Over Voltage Protection (OVP) The IR3507 includes over-voltage protection that turns on the low side MOSFET to protect the load in the event of a shorted high-side MOSFET, converter out of ...

Page 15

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF LAYOUT GUIDELINES The following layout guidelines are recommended to reduce the parasitic inductance and resistance of the PCB layout; therefore, minimizing the noise coupled to the IC. • Dedicate at least ...

Page 16

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF PCB Metal and Component Placement • Lead land width should be equal to nominal part lead width. The minimum lead to lead spacing should be ≥ 0.2mm to minimize shorting. • ...

Page 17

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF Solder Resist • The solder resist should be pulled away from the metal lead lands and center pad by a minimum of 0.06mm. The solder resist mis-alignment is a maximum of ...

Page 18

NOT RECOMMENDED FOR NEW DESIGNS REPLACEMENT PRODUCT – IR3507ZPBF Stencil Design • The stencil apertures for the lead lands should be approximately 80% of the area of the lead lands. Reducing the amount of solder deposited will minimize the occurrence ...

Page 19

PACKAGE INFORMATION 20L MLPQ ( Body) – θ IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Visit us at www.irf.com for sales contact information. Page ...

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