DC/DC Power Conversion for Datacenter, Open Compute …

1 48V datacenter SolutionsDC/DC Power Conversion for datacenter , open Compute & AI 48V Power Solution: Power Solution: Digital Multi-Phase Controller + Intelli-PhaseTM ..MPS 48V datacenter & of ContentsOverviewToday s datacenters use an average of 3kW to 5kW per rack to Power server, storage, and networking racks. Most are designed to Power basic CPUs to operate at high levels of efficiency. Hence, the traditional 12V Power architecture has been widely accepted and implemented (see Figure 1).As the demand for cloud computing, AI applications, and high- Power processors and accelerators grows, datacenters are evolving to accommodate new high- Power requirements.

2 For example, an early AI market supercomputer required 3200W for the entire Power system. The second generation s Power demand increased threefold, resulting in 10kW for the entire Power system. Since the Power lost in distributing high current increases by the square of the current (I2R), more copper must be used in the backplane or wiring harness to control the distribution losses. Ultimately, this limits the Power delivery of the order to meet the industry s new Power requirements, MPS has developed a new Power architecture, using a 48V distribution voltage that is capable of a 16x reduction in Power distribution losses, in addition to presenting a 48V datacenter solution to address new design 1: Traditional 12V Power Distribution12V BUSDDR VRDDRCoreDDRDDR U VR(s)Sec ond BUS(R ange: 4V to 6V)48V BUSF irst Stage:(R ange.)

3 4V to 6V)DDRDDRO therCoreMP S Intelli -PhaseTM (DrMOS)MP S Intelli -PhaseTM (DrMOS)MP S Intelli -PhaseTM (DrMOS)MP S Intelli -PhaseTM (DrMOS)MP S Intelli -PhaseTM (DrMOS)MPS Digital Multi -Phase ControllerMPS Power Modules48V4V 6V LLCF igure 2: 48V Power Structure MPS 4V to 6V SystemMPS 48V Power Structure48V Power Structure: MPS s New 48V to System4 MPS 48V Power Structure First-stage solution: MPS LLC Power Modules Second-stage solution: Digital multi-phase controller + low-voltage Intelli-PhaseTM 10:1 input-to-output ratio Offered at various Power levels Parallel operation Low-voltage Intelli-PhaseTM products use patented technologies to boost performance including efficiency, Power density, and overall performance while reducing losses from the Power delivery network (PDN) Low-voltage Intelli-PhaseTM devices offer MPS s proprietary footprint, which helps reduce overall solution sizeIntelli-PhaseTM is MPS s state-of-the-art Power stage.

4 MPS s DrMOS uses our monolithic process to drastically improve performance, and incorporates advanced features, including current sense, temperature sense, and fault reporting. Total system efficiency is greatly optimizedFigure 3: 48V Power Structure MPS 10V to 5V System548V Power Structure: Reutilize a 12V Legacy System Easiest method for 48V migration, as it can reuse an existing 12V system Second-stage solution: Digital multi-phase controller + Intelli-PhaseTM As part of the MPS portfolio, the Intelli-PhaseTM family offers continuous current ratings up to 90A Intelli-PhaseTM devices are offered in a common footprint or an MPS proprietary footprintMPS 48V Power Structure First-stage solution: MPS LLC Power Modules, 4:1 input-to-output ratio or 4.

5 1 STC topology48V BUSF irst Stage: (R ange:40-60V)MPS Digital Multi -Phase Controller48V BUSF irst Stage: (Range: 40V to 60V)Se ond Stage:12V BUS(R ange: 10V to 15V)DDRDDRO therCoreMPS Power Modules48V10V 15V LLCMPS Intelli-PhaseTM (DrMOS)MPS Intelli-PhaseTM (DrMOS)MPS Intelli-PhaseTM (DrMOS)MPS Intelli-PhaseTM (DrMOS)MPS Intelli-PhaseTM (DrMOS)Topologies for 48V-to-12V ConversionTwo commonly seen topologies for 48V-to-12V Conversion are LLC and STC. An LLC (inductor-inductor-capacitor) is a resonant topology comprised of two inductors and one capacitor. It allows for zero-current switching of the main switches, thereby dramatically lowering switching losses and boosting efficiency.

6 Figure 4 shows an example of an llc resonant STC (switched-tank capacitor) is another resonant topology that primarily uses a network of capacitors to step down from a 48V input to 12V output. Figure 5 shows an example of an STC 5: STC Converter48V/N48 VFigure 4: LLC Convertern:1 resonant NETWORKVDIPLRCRROIDR2VO+-Q1Q2 VIN+-LLC and STC ComparisonLLCSTCGood for any current/ Power level applicationsOverall performance: - High Power density - Low PDN Loss - Efficiency when using a 10:1 Power Scalable and interchangeableSmaller overall solution sizeGood for applications below 500 WOverall performance: - Lower Power density - Higher PDN loss - Comparable efficiency to a 4:1 LLC Well-understood topologyLarger overall solution size6 TopologiesFirst-Stage Solution.

7 Power ModulesThe MPC1100-54 is an open -frame digital DC/DC Power module with continuous Power , up to 300W (see Figure 6). This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system VIN Range: 40V to 60V 10:1 Input-to-Output Ratio Power Level: Up to 300W Power Density: 1700W/in3 LLC Topology PMBus/I2C-Compliant Supports Parallel Operation Built-In MTP to Store Custom Configurations GUI Configuration Software Provided Great for High-Current and High- Power Applications Pin-to-Pin Compatible with the MPC1102-54 VIN UVLO VOUT OVP/UVP OCP_TDC/SPIKE OTP7 MPC1100-54 High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 300W Power ModuleFigure 6.

8 MPC1100-54-xxxxFirst-Stage SolutionPart NumberVIN (V)VOUT Range (V) Power Density (W/in3)POUT (W)Peak Efficency (%)Efficiency @ 300W (%)MPC1100-54-xxxx40 to 604 to MPC1102-54 is an open -frame digital DC/DC Power module with continuous Power , up to 500W (see Figure 7).This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 500W Power ModuleDimensions27mmx18mmx6mmFeatures GUI Configuration Software Provided Great for High-Current and High- Power Applications Pin-to-Pin Compatible with the MPC1100-54 VIN Range: 40V to 60V 10:1 Input-to-Output Ratio Power Level: Up to 500W Power Density.

9 2810W/in3 LLC Topology PMBus/I2C-Compliant Supports Parallel Operation Built-In MTP to Store Custom Configurations VIN UVLO VOUT OVP/UVP OCP_TDC/SPIKE OTPF igure 7: MPC1102-54-xxxx Peak Efficency (%)Part NumberVIN (V)VOUT Range (V) Power Density (W/in3)POUT (W)Efficiency (%)MPC1102-54-xxxx40 to 604 to @ 300W: @ 500W: MPC11057-54-0750 is an open -frame digital DC/DC Power module with continuous Power , up to750W (see Figure 8). This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 750W Power ModuleFeatures VIN Range: 40V to 60V 10:1 Input-to-Output Ratio Power Level: Up to 750W Power Density: 1840W/in3 LLC Topology PMBus/I2C-Compliant Built-In MTP to Store Custom Configurations VIN UVLO VOUT OVP/UVP OCP_TDC/SPIKE OTP GUI Configuration Software Provided Great for High-Current and High- Power ApplicationsFigure 8.

10 MPC11057-54-0750-xxxx Peak Efficency (%)Part NumberVIN (V)VOUT Range (V) Power Density (W/in3)POUT (W)Efficiency @ 750W (%)MPC11057-54 -0750-xxxx40 to 604 to MPC12106-54-0750 is an open -frame digital DC/DC Power module with continuous Power , up to 750W. This module accepts up to a 60V input, and is configured in a 4:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 750W Power ModuleFeatures VIN Range: 40V to 60V 10:1 Input-to-Output Ratio Power Level: Up to 750W Power Density.