MultiphaseDigital PowerControllers

International Rectifier's intelligent multiphase buck PWM controllers are the key component in high frequency voltage regulator (VR) designs for powering today’s high performance microprocessors (CPUs) and graphics processors (GPUs). They are fully compliant with industry standard processor vendor VR specifications.

 

   Intel VR12 Controllers


International Rectifier's VR12 controllers are fully vetted controllers that provide the extremely tight regulation, sophisticated interface, and highly digital content required to meet the emerging VR12 products from Intel. These dual-voltage controllers are offered from 2 phases to 8 as well as single voltage products for DDR memory applications. International Rectifiers unique efficiency shaping features insure customers have the highest possible efficiency in their solution. All controllers have overclocking capability to be used in high performance motherboards, or to offer high performance operation in servers. Full state of the art current, voltage, temperature and phase balance protection are included as well.

Part Number IR3541 IR3536 IR3538 CHL8325 CHL8326 CHL8328 CHL8102 CHL8103 CHL8104 CHL8113
OverClocking yes yes yes yes yes yes yes yes yes yes
Auto-PSI/DPC yes yes yes yes yes yes yes yes yes yes
VGD yes yes yes yes yes yes - - - -
# Voltage Outputs 2 2 2 2 2 2 2 2 2 1
# Phases 5 6 8 5 6 8 3 4 5 3
Typical Configuration 4+1 5+1 7+1 4+1 5+1 7+1 2+1 3+1 4+1 3
Package QFN QFN QFN QFN QFN QFN QFN QFN QFN QFN
Size 6×6 7×7 8×8 6×6 7×7 8×8 5×5 6×6 6×6 5×5
Pins 40 48 56 40 48 56 28 40 40 28
I2C yes yes yes yes yes yes yes yes yes yes
SMBus yes yes yes yes yes yes - - - -
PMBus yes yes yes yes yes yes - - - -

 

   AMD CPU Controllers


International Rectifier AMD CPU controllers have been implemented in server and desktop applications and have brought high efficiency savings, overclocking, and very accurate digital control to AMD solutions. All controllers support serial (SVI) interface protocol, and several support parallel bit (PVI) protocol. These dual-voltage controllers are offered from 2 phases to 8 as well as single voltage products for DDR memory applications. International Rectifiers unique efficiency shaping features insure customers have the highest possible efficiency in their solution. All controllers have overclocking capability to be used in high performance motherboards, or to offer high performance operation in servers. Full state of the art current, voltage, temperature and phase balance protection are included as well.

Part Number IR3541 IR3536 IR3538 CHL8325 CHL8325 CHL8328 CHL8102 CHL8103 CHL8104 CHL8113
OverClocking yes yes yes yes yes yes yes yes yes yes
Auto-PSI/DPC yes yes yes yes yes yes yes yes yes yes
VGD yes yes yes yes yes yes - - - -
# Voltage Outputs 2 2 2 2 2 2 2 2 2 1
# Phases 5 6 8 5 6 8 3 4 5 3
Typical Configuration 4+1 5+1 7+1 4+1 5+1 7+1 2+1 3+ 4+ 3
Package QFN QFN QFN QFN QFN QFN QFN QFN QFN QFN
Size 6×6 7×7 8×8 6×6 7×7 8×8 5×5 6×6 6×6 5×5
Pins 40 48 56 40 48 56 28 40 40 28
I2C yes yes yes yes yes yes yes yes yes yes
SMBus yes yes yes yes yes yes - - - -
PMBus yes yes yes yes yes yes - - - -

*For new designs, the IR3541 or CHL8325 are recommended

**The IR3538 and CHL8338 support both SVI serial as well as PVI parallel AMD interface support

 

   Graphics Processors (GPU) Controllers


International Rectifier Graphics Multiphase controllers are ideal to power high performance Graphic processors, as well as associated DDDR memory. International Rectifier offers both single and dual voltage controllers to manage cost, space and performance. International Rectifier GPU controllers have unique features such as multi-pin VID control, current steering to manage PCMIA and connector current limits, two-level current protection and much more. These controllers are found on mainstream, performance and enthusiast class graphics cards in desktop, server, notebook and High Performance Computing (HPC) environments

Part Number CHL8266 CHL8203 CHL8212 CHL8213 CHL8214 CHL8225G CHL8228G
OverClocking yes yes yes yes yes yes yes
Auto-PSI/DPC yes yes yes yes yes yes yes
VGD - - - - - yes yes
# Voltage Outputs 1 1 2 2 2 2 2
# Phases 6 3 3 4 5 5 8
Typical Configuration 6 3 2+1 3+1 4+1 4+1 6+2
Package QFN QFN QFN QFN QFN QFN QFN
Size 7×7 5×5 5×5 6×6 6×6 6×6 5×5
Pins 48 28 28 40 40 40 28
I2C - yes yes yes yes yes yes
SMBus yes - - - - yes yes
PMBus - - - - - yes yes

 

   Intel VR11.1 Controllers


International Rectifier VR11.1 controllers have been proven in some of the highest performance motherboards and servers in the market. These products introduced International Rectifier's Dynamic Phase control features the first in the industry to be able to both shed phases to save power, and add phases under proprietary digital control, when CPU transient currents are presented. These controllers are ideal for DDR memory as well.

Part Number CHL8314 CHL8316 CHL8318 CHL8318-20
OverClocking yes yes yes yes
Auto-PSI/DPC yes yes yes yes
VGD yes yes yes yes
# Voltage Outputs 1 1 1 1
# Phases 4 6 8 8
Typical Configuration 4 6 8 8
Package QFN QFN QFN QFN
Size 7×7 7×7 8×8 8×8
Pins 48 48 56 56
I2C - - - -
SMBus yes yes yes yes
PMBus - - - -