Dual Output Digital Multi-Phase Controller
IR3564A
IR3570A
FEATURES
Dual output 4+1 and 3+2 phase PWM
Controllers
Easiest layout and fewest pins in the industry
Fully supports AMD® SVI1 & SVI2 with dual
OCP and Intel® VR12
Overclocking & Gaming Mode
Switching frequency from 200kHz to 2MHz
per phase
IR Efficiency Shaping Features including
Dynamic Phase Control and Automatic Power
State Switching
Programmable 1-phase operation for Light
Loads and Active Diode Emulation for Very
Light Loads
IR Adaptive Transient Algorithm (ATA) on
both loops minimizes output bulk capacitors
and system cost
Auto-Phase Detection with auto-
compensation
Per-Loop Fault Protection: OVP, UVP, OCP,
OTP, CFP
I2C/SMBus/PMBus system interface for
telemetryof Temperature, Voltage, Current &
Power for both loops
Multiple Time Programming (MTP) with
integrated charge pump for easy custom
configuration
Compatible with IR ATL and 3.3V tri-state
Drivers
+3.3V supply voltage; -40°C to 85°C ambient
operation
Pb-Free, RoHS, 5x5mm, 40-pin, 0.4mm pitch
QFN
DESCRIPTION
The IR3564A/70A is a dual-loop digital multi-phase buck
controller designed for CPU voltage regulation and is fully
compliant with AMD® SVI1 & SVI2 and Intel® VR12
specifications.
The IR3564A/70A includes IR’s Efficiency Shaping
Technology to deliver exceptional efficiency at minimum
cost across the entire load range. IR’s Dynamic Phase
Control adds/drops active phases based upon load
current and can be configured to enter 1-phase operation
and diode emulation mode automatically or by command.
IR’s unique Adaptive Transient Algorithm (ATA), based
on proprietary non-linear digital PWM algorithms,
minimizes output bulk capacitors and Multiple Time
Programmable (MTP) storage saves pins and enables a
small package size. Device configuration and fault
parameters are easily defined using the IR Digital Power
Design Center (DPDC) GUI and stored in on-chip MTP.
The IR3564A/70A provides extensive OVP, UVP, OCP
and OTP fault protection and includes thermistor based
temperature sensing with VRHOT signal.
The IR3564A/70A includes numerous features like
register diagnostics for fast design cycles and platform
differentiation, simplifying VRD design and enabling
fastest time-to-market (TTM) with “set-and-forget”
methodology.
APPLICATIONS
AMD® SVI1 & SVI2, Intel® VR12 based systems
Desktop & Notebook CPU VRs
GPU & Memory VRs
ORDERING INFORMATION
Base Part
Number
IR3564A
IR3570A
IR3564A
IR3570A
IR3564A
IR3570A
Package Type
Form
QFN 5 mm x 5 mm
QFN 5 mm x 5 mm
QFN 5 mm x 5 mm
Tape and Reel
Tape and Reel
Tray
Standard Pack
Quantity
3000
3000
4900
Orderable
Part Number
IR3564AMxxyyTRP
R3570AMxxyyTRP
IR3564AMTRPBF
IR3570AMTRPBF
IR3564AMTYPBF
IR3570AMTYPBF
1
1
1.
Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File (Codes assigned by IR Marketing).
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| © 2013 International Rectifier | Product Brief |
October 1, 2013 | V3.04
Dual Output Digital Multi-Phase Controller
IR3564A
IR3570A
ORDERING INFORMATION
IR3564AM
IR3570AM
P/PBF
– Lead Free
TR
– Tape & Reel /
TY
- Tray
yy
– Configuration File ID
xx
– Customer ID
Package Type (QFN)
IRTN4
2
/IRTN2_L2
1
ISEN4
2
/ISEN2_L2
1
IRTN1_L2
32
IRTN1
IRTN2
40
39
38
37
IRTN3
36
35
34
33
31
30
29
28
27
26
25
24
23
RCSP
RCSM
VRDY2
VSEN
VRTN
RRES
TSEN1
V18A
PWRGD/
VRDY1
PWROK/EN_L2/
INMODE
ISEN1_L2
ISEN1
ISEN2
ISEN3
1
2
3
4
5
6
7
8
9
10
RCSP_L2
RCSM_L2
VCC
VSEN_L2
VRTN_L2
PWM1_L2
PWM4
2
/PWM2_L2
1
PWM3
PWM2
PWM1
IR3570A/IR3564A
40 Pin 5x5 QFN
Top View
1 = IR3570A
2 = IR3564A
22
41 GND
21
14
15
16
17
18
19
20
11
12
13
SM_DIO
VRHOT_ICRIT#
Figure 1: IR3564A/70A Pin Diagram Enlarge
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| © 2013 International Rectifier | Product Brief |
ADDR_PROT
SVT/
SV_ALERT
VDDIO/
SV_ADDR
SV_CLK/
VIDSEL1
SV_DIO/
VIDSEL0
SM_CLK
VINSEN
EN
October 1, 2013 | V3.04
Dual Output Digital Multi-Phase Controller
IR3564A
IR3570A
TYPICAL APPLICATION DIAGRAM
5V
RCSP
RCS
R
series
CCS
12V
Boot
Vcc
Vdrv
PWM
GND
CHL8505
HiGate
Switch
LoGate
V
V_CPU_L1
L
O
A
D
R
series
R
Th
RCSM
VCC
+3.3V
PWM1
ISEN1
IRTN1
5V
V
IR3564A
IR3570A
VSEN
VRTN
RRES
PWM2
ISEN2
IRTN2
12V
Boot
Vcc
Vdrv
PWM
GND
CHL8505
HiGate
Switch
LoGate
TSEN1
R
Th 2
5V
12V
Boot
Vcc
CHL8505
HiGate
Switch
LoGate
V
V18A
PWM3
VRDY1
VRDY2
VINSEN
R
VIN _ 2
Vdrv
PWM
GND
ISEN3
Vin
R
VIN _ 1
5V
12V
Boot
Vcc
CHL8505
HiGate
Switch
LoGate
V
CPU
Serial
Bus
From
System
VDDIO
Applicable circuit when pin is
configured as VDDIO only
EN
PWROK/EN_L2/INMODE
VDDIO/SV_ADDR
PWM1_L2
SM_DIO
SM_CLK
ISEN1_L2
IRTN1_L2
5V
12V
Boot
Vcc
Vdrv
PWM
GND
CHL8505
HiGate
Switch
LoGate
V
V
V
IR3570A
V_CPU_L2
L
O
A
D
SVT/SV_ALERT
SV_DIO
PWM2_L2/PWM4
SV_CLK
ISEN2_L2/ISEN4
IRTN2_L2/IRTN4
VRHOT_CRIT#
Vdrv
PWM
GND
I2C Bus
V
V
V
V
R
series
R
Th
R
series
RCS
CCS
RCSP_L2
RCSM_L2
VSEN_L2
VRTN_L2
ADDR_PROT
GND
Figure 2: Dual-loop VR using IR3564A or IR3570A Controller and CHL8505 MOSFET Drivers in 4+1 or 3+2 Configuration
3
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| © 2013 International Rectifier | Product Brief |
IR3564A
IRTN3
October 1, 2013 | V3.04
Dual Output Digital Multi-Phase Controller
IR3564A
IR3570A
Data and specifications subject to change without notice.
This product will be designed and qualified for the Consumer market.
Qualification Standards can be found on IR’s Web site.
IR WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
www.irf.com
4
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| © 2013 International Rectifier | Product Brief |
October 1, 2013 | V3.04
