CHL8225-00CRT International Rectifier, CHL8225-00CRT Datasheet
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CHL8225-00CRT
Manufacturer Part Number
CHL8225-00CRT
Description
Dual loop, 4+1 multiphase PWM controller for graphics processor VR solutions with multiple input rail control
Manufacturer
International Rectifier
Datasheet
1.CHL8228G-00CRT.pdf
(2 pages)
Specifications of CHL8225-00CRT
Controller
GPU
Overclocking
Yes
Auto-psi/dpc
Yes
Vgd
Yes
Voltage Outputs (#)
2
Phases (#)
5
Typical Configuration
4 + 1 Multiphase
I2c
Yes
Smbus
Yes
Pmbus
Yes
Package
QFN 6 x 6
Trademarks and registered trademarks are the property of the respective
owners.
PB0008, Rev 1.0, June 11, 2010
FEATURES
DESCRIPTION
The CHL8225/8 are dual-loop digital multi-phase buck
controllers. The CHL8225 drives up to 5 phases and the
CHL8228 drives up to 8 phases. They feature Input Voltage
Management allowing up to 3 input voltages to be
monitored to ensure adequate power is delivered to the
load. Dynamic voltage control is provided by 4 registers
which are programmed through I2C/SMBus/PMBus and
then selected using a 2-bit parallel bus for fast access.
The CHL8225/8 NVM saves pins and enables a small
package size.
The CHL8225/8 includes the CHiL Efficiency Shaping
Technology to deliver exceptional efficiency at minimum
cost across the entire load range. CHiL Variable Gate Drive
optimizes the MOSFET gate drive voltage as a function of
real-time load current. CHiL Dynamic Phase Control adds
and drops phases based upon load current. The
CHL8225/8 can be configured to enter 1-phase operation
and active diode emulation mode based upon load current
or by command.
CHiL’s unique Adaptive Transient Algorithm (ATA), based
on proprietary non-linear digital PWM algorithms, minimizes
output bulk capacitors. In addition, a coupled inductor
mode, with phases added/dropped in pairs enables further
improvement in transient response and form factor.
The I2C/PMBus interface can communicate with up to 16
CHL8225/8 based VR loops. Device configuration and fault
5-phase & 8-phase dual output PWM Controller with
phases flexibly assigned between Loops 1 & 2
Dynamic voltage control by 2-bit parallel interface with
Gamer Mode override and Vmax setting
Input Voltage Management for up to 3 Input Voltages
I
Phase Switching frequency from 200kHz to 1.2MHz
CHiL Efficiency Shaping Features including Variable
Gate Drive, Dynamic Phase Control
Programmable 1-phase or 2-phase for Light Loads and
Active Diode Emulation for Very Light Loads
CHiL Adaptive Transient Algorithm (ATA) minimizes
output bulk capacitors and system cost
Designed for use with coupled inductors
Per-Loop Fault Protection: OVP, UVP, OCP, OTP
I2C/SMBus/PMBus system interface for telemetry of
Temperature, Voltage, Current & Power for both loops
Non-Volatile Memory (NVM) for custom configuration
Compatible with CHiL ATL and 3.3V tri-state Drivers
+3.3V supply voltage; 0ºC to 85ºC ambient operation
Pb-Free, RoHS, 6x6 40pin & 8x8 56pin QFN packages
CRITICAL
Monitor and Phase Current Capture Mode
DIGITAL MULTI-PHASE BUCK CONTROLLER
PRODUCT BRIEF
-
1
-
parameters are easily defined using the CHiL Intuitive
Power Designer (IPD) GUI and stored in on-chip NVM.
The CHL8225/8 provides extensive OVP, UVP, OCP and
OTP fault protection and includes thermistor based
temperature sensing with VRHOT signal.
The CHL8225/8 includes numerous features like register
diagnostics for fast design cycles and platform
differentiation, simplifying VRD design and enabling fastest
time-to-market with its “set-and-forget” methodology.
APPLICATIONS
VR_READY_L2
VR_READY
VRHOT2
VINSEN
VR_READY_L2
RCSM
EN_L2
ISEN8
Multiphase GPU systems
RCSP
VSEN
VRTN
RRES
TSEN
V18A
VCC
Figure 1: CHL8225 & CHL8228 Packages
VR_READY
RCSM
RCSP
VSEN
RRES
VRTN
TSEN
V18A
VCC
10
11
12
13
14
1
2
3
4
5
6
7
8
9
56
15
10
1
2
3
4
5
6
7
8
9
55
16
40
11
54
17
39
12
53
18
© 2010 CHiL Semiconductor Corp. All rights reserved
38
13
52
19
37
14
CHL8225/CHL8228
40 Pin 6x6 QFN
51
20
CHL8225
Top View
36
15
One Highwood Drive, Tewksbury, MA 01876
56 Pin 8x8 QFN
Top View
50
CHL8228
21
35
16
49
22
34
17
48
23
33
18
41 GND
32
19
47
24
31
20
46
25
Tel: +1(978) 640-0011
www.chilsemi.com
45
26
30
29
28
27
26
25
24
23
22
21
57 GND
RCSP_L2
RCSM_L2
VCC
VSEN_L2
VRTN_L2
PWM5
PWM4
PWM3
PWM2
PWM1
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
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CHL8225-00CRT Summary of contents
Page 1
... Pb-Free, RoHS, 6x6 40pin & 8x8 56pin QFN packages DESCRIPTION The CHL8225/8 are dual-loop digital multi-phase buck controllers. The CHL8225 drives phases and the CHL8228 drives phases. They feature Input Voltage Management allowing input voltages to be monitored to ensure adequate power is delivered to the load ...
Page 2
... LoGate GND O Mode A D CHL8510 Boot HiGate Vcc HVCC Switch LVCC V_VGD PWM LoGate GND Mode Optional Variable Gate Drive Circuit Tape & Reel Qty Part Number 3000 CHL8225-00CRT CHL8225-xxCRT 3000 3000 CHL8228-00CRT 3000 CHL8228-xxCRT PB0008 Rev 1.0, June 11, 2010 ...