IR3538MTRPBF International Rectifier, IR3538MTRPBF Datasheet
![no-image](/images/manufacturer_photos/0/3/338/international_rectifier_sml.jpg)
IR3538MTRPBF
Manufacturer Part Number
IR3538MTRPBF
Description
Dual Loop, 7+1 multiphase VR12/AMD PWM controller for high efficiency, highly accurate VR solutions
Manufacturer
International Rectifier
Datasheet
1.IR3538MTRPBF.pdf
(2 pages)
Specifications of IR3538MTRPBF
Controller
CPU
Overclocking
Yes
Auto-psi/dpc
Yes
Vgd
Yes
Voltage Outputs (#)
2
Phases (#)
8
Typical Configuration
7 + 1 Multiphase
I2c
Yes
Smbus
Yes
Pmbus
Yes
Package
QFN 8 x 8
FEATURES
APPLICATIONS
PIN DIAGRAM
6-phase & 8-phase dual output PWM Controller
Phases are flexibly assigned between Loops 1 & 2
Intel® VR12, AMD® 3.4MHz SVI/PVI & Memory
Overclocking & Gaming Mode with Vmax setting
Switching frequency from 200kHz to 1.2MHz per
IR Efficiency Shaping Features including Variable
Programmable 1-phase or 2-phase for Light Loads
IR Adaptive Transient Algorithm (ATA) on both loops
Auto-Phase Detection with auto-compensation
Per-Loop Fault Protection: OVP, UVP, OCP, OTP, CFP
I2C/SMBus/PMBus system interface for telemetry
Non-Volatile Memory (NVM) for custom
Compatible with IR ATL and 3.3V Tri-state Drivers
+3.3V supply voltage; -20ºC to 85ºC ambient
Pb-Free, RoHS, 7x7 48-pin & 8x8 56-pin QFN
Intel ® VR12 & AMD® SVI & PVI based systems
DDR Memory with Vtt tracking
Overclocked & Gaming platforms
modes
phase
Gate Drive and Dynamic Phase Control
and Active Diode Emulation for Very Light Loads
minimizes output bulk capacitors and system cost
of Temperature, Voltage, Current & Power for
both loops
configuration
operation
packages
Figure 1: IR3536/CHL8326 Package Top View
1
VR_READY_L2
VR_READY
VFIXEN_PSI
/ PWROK
PWRGD
VINSEN
RCSP
RCSM
CFP
VSEN
VRTN
RRES
TSEN
V18A
VCC
November 28, 2011 | FINAL | V1.04
1
1
/
2
/
2
1
2
10
11
12
1
2
3
4
5
6
7
8
9
48
13
47
14
46
15
45
16
48 Pin 7x7 QFN
44
17
Top View
CHL8326
43
18
42
19
41
20
40
21
39
22
49 GND
38
23
37
24
36
35
34
33
32
31
30
29
28
27
26
25
RCSP_L2
RCSM_L2
VCC
VSEN_L2
VRTN_L2
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
VAR_GATE
Digital Multi-Phase Buck Controller
DESCRIPTION
The IR3536/CHL8326 and IR3538/CHL8328 are dual-loop
digital multi-phase buck controllers. The IR3536/CHL8326
drive up to 6 phases and the IR3538/CHL8328 drives up to
8 phases. The IR3536/CHL8326 and IR3538/CHL8328 are
fully Intel® VR12 and AMD® SVI/PVI compliant on both
loops and provide a Vtt tracking function for DDR memory.
The IR3536/CHL8326 and IR3538/CHL8328 include the
IR Efficiency Shaping Technology to deliver exceptional
efficiency at minimum cost across the entire load range.
IR Variable Gate Drive optimizes the MOSFET gate drive
voltage based on real-time load current. IR Dynamic Phase
Control adds/drops phases based upon load current.
The IR3536/CHL8326 and IR3538/CHL8328 can be
configured to enter 1-phase operation and active 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.
The I2C/PMBus interface can communicate with up to 16
IR3536/CHL8326 and IR3538/CHL8328 based VR loops.
Device configuration and fault parameters are easily
defined using the IR Intuitive Power Designer (DPDC) GUI
and stored in on-chip NVM.
The IR3536/CHL8326 and IR3538/CHL8328 provides
extensive OVP, UVP, OCP and OTP fault protection and
includes thermistor based temperature sensing with
VR_HOT signal.
NVM storage saves pins and enables a small package size.
The IR3536/CHL8326 and IR3538/CHL8328 also include
numerous features like register diagnostics for fast design
cycles and platform differentiation, truly simplifying
VRD design and enabling fastest time-to-market with its
“set-and-forget” methodology.
Figure 2: IR3538/CHL8328 Package Top View
VR_READY_L2
1
Intel/MPoL mode
2
AMD mode
VFIXEN_PSI
VR_READY
/ PWROK
PWRGD
VINSEN
GPO_B
ISEN8
RCSP
RCSM
CFP
VSEN
VRTN
RRES
TSEN
V18A
VCC
1
1
/
2
/
2
1
2
10
11
12
13
14
1
2
3
4
5
6
7
8
9
56
15
55
16
54
17
53
18
52
19
56 Pin 8x8 QFN
51
20
Top View
CHL8328
50
21
49
22
48
23
47
24
CHL8326/28
46
25
IR3536/38
45
57 GND
26
44
27
43
28
42
41
40
39
38
37
36
35
34
33
32
31
30
29
ISEN7
RCSP_L2
RCSM_L2
VCC
VSEN_L2
VRTN_L2
PWM8
PWM7
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
Related parts for IR3538MTRPBF
IR3538MTRPBF Summary of contents
Page 1
FEATURES 6-phase & 8-phase dual output PWM Controller Phases are flexibly assigned between Loops 1 & 2 Intel® VR12, AMD® 3.4MHz SVI/PVI & Memory modes Overclocking & Gaming Mode with Vmax setting Switching frequency from ...
Page 2
... VINSEN 1 Intel/MPoL mode 2 AMD mode Figure 4: IR3538/CHL8328 Package Top View, Enlarged IR3536/38 CHL8326/28 Part Number Programming 1 3000 IR3536MTRPBF Unprogrammed 1 3000 IR3538MTRPBF Unprogrammed 2 3000 IR3536MxxyyTRP Customer Configuration 2 3000 IR3538MxxyyTRP Customer Configuration Tape & Reel Qty Part Number 3000 CHL8326-00CRT 3000 CHL8326-xxCRT 3000 ...