IR3080MTRPBF International Rectifier, IR3080MTRPBF Datasheet

IC CONTROLLER PHASE 32LMLPQ

IR3080MTRPBF

Manufacturer Part Number
IR3080MTRPBF
Description
IC CONTROLLER PHASE 32LMLPQ
Manufacturer
International Rectifier
Series
XPhase™r
Datasheet

Specifications of IR3080MTRPBF

Applications
Processor
Current - Supply
11mA
Voltage - Supply
9.5 V ~ 14 V
Operating Temperature
0°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
32-MLPQ
Ic Function
Control IC With VCCVID And Overtemp Detect
Supply Voltage Range
9.5V To 14V
Operating Temperature Range
0°C To +100°C
Digital Ic Case Style
MLPQ
No. Of Pins
32
Filter Terminals
SMD
Rohs Compliant
Yes
Controller Type
PWM
Package
32-Lead MLPQ
Circuit
X-Phase Control IC
Switch Freq (khz)
150kHz to 1.0MHz
Pbf
PbF Option Available
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
IR3080MPBFTR
IR3080MTRPBF
IR3080MTRPBFTR
DESCRIPTION
FEATURES
APPLICATION CIRCUIT
Page 1
The IR3080 Control IC combined with an IR XPhase
implement a complete VRD 10 power solution. 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 XPhase
to design while providing higher efficiency than conventional approaches.
The IR3080 is intended for desktop applications and includes the VCCVID and VRHOT functions required
for proper system operation.
XPHASE
6 bit VR10 compatible VID with 0.5% overall system accuracy
1 to X phases operation with matching phase ICs
On-chip 700Ω VID Pull-up resistors with VID pull-up voltage input
Programmable Dynamic VID Slew Rate
No Discharge of output capacitors during Dynamic VID step-down (can be disabled)
+/-300mV Differential Remote Sense
Programmable 150kHz to 1MHz oscillator
Programmable VID Offset and Load Line output impedance
Programmable Softstart
Programmable Hiccup Over-Current Protection with Delay to prevent false triggering
Simplified Powergood provides indication of proper operation and avoids false triggering
Operates from 12V input with 9.1V Under-Voltage Lockout
6.8V/5mA Bias Regulator provides System Reference Voltage
1.2V @ 150mA VCCVID Linear Regulator with Full Protection
VCCVID Powergood with Programmable delay gates converter operation
Programmable Converter Over-Temperature Detection and Output
Small thermally enhanced 32L MLPQ package
VID POWERGOOD
POWERGOOD
VCCVID
VRHOT
3.3V
VID5
VID0
VID1
VID2
VID3
VID4
12V
TM
VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT
1
2
3
4
5
6
7
8
TM
VIDFB
VCCVID
VIDPWR
VID5
VID0
VID1
VID2
VID3
architecture results in a power supply that is smaller, less expensive, and easier
RVCC
10 ohm
IR3080
CONTROL
IC
CVCC
0.1uF
ROSC
EAOUT
OCSET
VBIAS
VDRP
BBFB
VCC
FB
IIN
23
22
21
20
19
18
17
24
ROCSET
RVDAC
CVDAC
TM
RDRP1
RHOTSET2
RHOTSET1
0.1uF
RDRP
Phase IC provides a full featured and flexible way to
CFB
RFB1
CDRP
RFB
RCP
CCP1
CCP
RMPOUT
VBIAS
EA
ISHARE
VDAC
VOSENSE+
VOSENSE-
Data Sheet No. PD94705 revB
5 Wire Analog Bus
to Phase ICs
Remote Sense
IR3080PbF

Related parts for IR3080MTRPBF

IR3080MTRPBF Summary of contents

Page 1

TM XPHASE VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT DESCRIPTION The IR3080 Control IC combined with an IR XPhase implement a complete VRD 10 power solution. The “Control” IC provides overall system control and interfaces with any number of ...

Page 2

... ORDERING INFORMATION Device IR3080MTRPbF IR3080MPbF ABSOLUTE MAXIMUM RATINGS Operating Junction Temperature……………..150 Storage Temperature Range………………….-65 ESD Rating……………………………………..HBM Class 1C JEDEC standard ...

Page 3

ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over: 9.5V ≤ ≤ 100 C J PARAMETER VDAC Reference System Set-Point Accuracy Source Current Sink Current VID Input Threshold VID Pull-up Resistors Regulation Detect Comparator Input Offset Regulation ...

Page 4

PARAMETER Oscillator Switching Frequency R Peak Voltage (5V typical, measured VBIAS) Valley Voltage (1V typical, measured VBIAS) VBIAS Regulator Output Voltage Current Limit Soft Start and Delay SS/DEL to FB Input Offset Voltage Charge ...

Page 5

PARAMETER VCC Under-Voltage Lockout Start Threshold Stop Threshold Hysteresis General VCC Supply Current VIDPWR Supply Current VOSNS- Current VRHOT Comparator HOTSET Bias Current Output Voltage VRHOT Leakage Current Threshold Hysteresis Threshold Voltage (increasing temperature) Note 1: Guaranteed by design, but ...

Page 6

PIN DESCRIPTION PIN# PIN SYMBOL PIN DESCRIPTION 1 VIDFB Feedback to the VCCVID regulator. Connect to the VCCVID output. 2 VCCVID 1.2V/150mA Regulator Output. Can also drive external pass transistor to minimize on-chip power dissipation 3 VIDPWR Power for VID ...

Page 7

SYSTEM THEORY OF OPERATION TM XPhase Architecture TM The XPhase architecture is designed for multiphase interleaved buck converters which are used in applications requiring small size, design flexibility, low voltage, high current and fast transient response. The architecture can control ...

Page 8

PWM Control Method The PWM block diagram of the XPhase trailing edge modulation is used. A high-gain wide-bandwidth voltage type error amplifier in the Control IC is used for the voltage control loop. An external RC circuit connected to the ...

Page 9

VPEAK (5.0V) VPHASE4&5 (4.5V) VPHASE3&6 (3.5V) VPHASE2&7 (2.5V) VPHASE1&8 (1.5V) VVALLEY (1.00V) PWM Operation The PWM comparator is located in the Phase IC. Upon receiving a clock pulse, the PWM latch is set; the PWMRMP voltage begins to increase; the ...

Page 10

PHASE IC CLOCK PULSE EAIN PWMRMP VDAC GATEH GATEL STEADY-STATE OPERATION TM Body Braking In a conventional synchronous buck converter, the minimum time required to reduce the current in the inductor in response to a load step decrease is; The ...

Page 11

Figure 5. Inductor Current Sensing and Current Sense Amplifier The advantage of sensing the inductor current versus high side or low side sensing is that actual output current being delivered to the load is obtained rather than peak or sampled ...

Page 12

IR3080 THEORY OF OPERATION Block Diagram The Block diagram of the IR3080 is shown in Figure 6, and specific features are discussed in the following sections. VCC - START + STOP + 9.1V VCC UVLO COMPARATOR VID DELAY 8.9V - ...

Page 13

The IR3080 can accept changes in the VID code while operating and vary the DAC voltage accordingly. The sink/source capability of the VDAC buffer amplifier is programmed by the same external resistor that sets the oscillator frequency. The slew rate ...

Page 14

Processor Pins (0 = low high) VID4 VID3 VID2 VID1 ...

Page 15

Control IC VDAC Inductor DCR Temperature Correction If the thermal compensation of the inductor DCR provided by the temperature dependent gain of the current sense amplifier is not adequate, a negative temperature coefficient (NTC) thermistor can be used for additional ...

Page 16

VCC VID Linear Regulator and VID Power Good The IR3080 integrates a fully protected 1.2V/150mA VCCVID linear regulator with over-current protection. Power for the VCCVID regulator is drawn from the VIDPWR pin which is typically connected to a 3.3V supply. ...

Page 17

The over-current delay can be reduced by adding a resistor in series with the SS/DEL capacitor. The delay comparator’s offset voltage is reduced by the drop in the resistor caused by the discharge current. The value of the series resistor ...

Page 18

VID = 11111X Fault VID codes of 111111 and 111110 will set the fault latch and disable the error amplifier. An 800ns delay is provided to prevent a fault condition from occurring during Dynamic VID changes. Power Good Output The ...

Page 19

APPLICATION INFORMATIONS 12V RVCC 10 ohm CVCC 0.1uF RHOTSETC1 1nF 1 VIDFB VCC 2 VCCVID VBIAS 3.3V 3 VIDPWR BBFB IR3080 VID5 4 VID5 EAOUT CONTROL VID0 5 VID0 FB IC VID1 6 VID1 VDRP VID2 7 VID2 IIN VID3 ...

Page 20

DESIGN PROCEDURES - IR3080 AND IR3086A CHIPSET IR3080 EXTERNAL COMPONENTS Oscillator Resistor Rosc The oscillator of IR3080 generates a triangle waveform to synchronize the phase ICs, and the switching frequency of the each phase converter equals the oscillator frequency, which ...

Page 21

DEL = t SSDEL VDAC Slew Rate Programming Capacitor C The slew rate of VDAC down-slope SR Equation (8), where I is the sink current of VDAC pin as shown in Figure 15. The resistor R ...

Page 22

No Load Output Voltage Setting Resistor R A resistor between FB pin and the converter output is used to create output voltage offset V difference between V voltage and output voltage at no load condition. Adaptive voltage positioning further DAC ...

Page 23

Measure the inductance L and the inductor DC resistance R follows The bias current flowing out of the non-inverting input of the current sense amplifier creates a voltage drop across ...

Page 24

Combined Over Temperature and Phase Delay Setting Resistors R The over temperature setting resistor divider can be combined with the phase delay resistor divider to save one resistor per phase. Calculate the HOTSET threshold voltage V Equation (23). If the ...

Page 25

RCP RFB VO VDAC RDRP VDRP (a) Type II compensation π ∗ ∗ optional and may be needed ...

Page 26

∗ optional and may be needed in some applications to reduce the jitter caused by the high frequency noise. A CP1 ...

Page 27

DESIGN EXAMPLE 1 - VRD 10 CONVERTER SPECIFICATIONS Input Voltage DAC Voltage: V =1.35 V DAC No Load Output Voltage Offset: V Output Current: I =105 ADC O Maximum Output Current: I =120 ADC OMAX Output ...

Page 28

The power good delay time is − − DEL VccPG I CHG VDAC Slew Rate Programming Capacitor C From Figure 15, the sink ...

Page 29

365 MAX CS _ MIN = = R DRP ∗ Control IC Over Temperature Setting Resistors R Set the temperature threshold at 115 ºC, which corresponds to the IC ...

Page 30

The phase delay resistor ratios for phases 400kHz of switching frequencies are RA RA =0.415, RA =0.202, RA PHASE2 PHASE3 slope. Pre-select R =R PHASE11 PHASE21 RA = PHASE 1 ∗ PHASE 12 ...

Page 31

DESIGN EXAMPLE 2 - EVRD 10 HIGH FREQUENCY ALL-CERAMIC CONVERTER SPECIFICATIONS Input Voltage DAC Voltage: V =1.3 V DAC No Load Output Voltage Offset: V Output Current: I =105 ADC O Maximum Output Current: I =120 ...

Page 32

The power good delay time is ∗ − − DEL VccPG I CHG VDAC Slew Rate Programming Capacitor C From Figure 15, the sink ...

Page 33

162 MAX CS _ MIN = = R DRP ∗ Control IC Over Temperature Setting Resistors R Set the temperature threshold at 115 ºC, which corresponds the IC die ...

Page 34

The over temperature setting voltage of phases and 6 is lower than the phase delay setting voltage, VBIAS*RA Pre-select R PHASEx. PHASE11 ∗ − PHASEx BIAS HOTSET R PHASEx 2 ∗ − ...

Page 35

RAMP = ∗ ∗ ∗ 100 * ...

Page 36

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 one middle layer for a ground plane LGND. • ...

Page 37

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. • Lead land length should be equal to maximum part ...

Page 38

Solder Resist • The solder resist should be pulled away from the metal lead lands by a minimum of 0.06mm. The solder resist mis-alignment is a maximum of 0.05mm and it is recommended that the lead lands are all Non ...

Page 39

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 of lead shorts. Since for 0.5mm pitch devices the ...

Page 40

TYPICAL PERFORMANCE CHARACTERISTICS Page 40 Figure 13 - Oscillator Frequency versus ROSC 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 ...

Page 41

PACKAGE INFORMATION 32L MLPQ ( Body) – θ IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Page C/W, θ JA Data and specifications subject to change without ...

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