Power Management Application Guide Motorola PowerPCand PowerQUICCProce
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Power Management Application Guide Motorola PowerPCand PowerQUICCProcessor based Systems
Embedded systems require multiple (<3.3V) voltages supplied latest high performance processors, chipsets, FPGAs memories. same time, increased gate counts higher clock speeds microprocessors have resulted higher current requirements. Both these trends lead more demanding power supply requirements. Fortunately, power management challenges presented current next generation embedded systems built around PowerPC architecture have already been solved Intersil, world leader high performance power supply ICs.
Processor Power
VDDL VDDH
Chipset Power
Power
Motorola PowerPC PowerQUICC
FPGA/ Chipset
Memory
Memory
selection tables solution diagrams this guide designed help identify right solutions different power supply needs your PowerPC-based designs. global network experts ready assist building cost-efficient high-performance power solutions.
Inside:
Power Solutions Motorola PowerPC PowerQUICC Devices Intersil's Recommended Power Supply Solutions, Including Schematics BOMs Selection Tables Sequencers Supervisory Memory Power Solutions Power Supply Layout Considerations
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www.intersil.com/motorola
PowerPC name trademark Corp. used under license. PowerQUICC name trademark Motorola, Inc. used under license. other product service names property their respective owners.
Intersil's Power Supply Solutions Motorola PowerPC PowerQUICC Processor based Systems
Power Requirements
PowerPC PowerQUICC devices require primary voltages, core logic voltage Input/Output voltage, also critical clock supply. Note that sequencing, tracking relative values these voltages critical proper operation Motorola's PowerPC PowerQUICC devices. Please refer specific Motorola data sheets details. Core Logic Voltage (typically referred VDDL Motorola): Ranging from 1.2V latest PowerQUICC MPC8560 3.3V earlier PowerPCs, core generally most demanding current requirements, from hundreds milliamps tens amps depending device clock frequency. Voltage (typically VDDH): order interface with other components, PowerPC PowerQUICC devices generally require separate voltage their I/Os. 1.8V, 2.5V 3.3V main voltages specified these products. current requirement generally less than switching regulator used high power efficiency required application, this moderate current level supplied linear regulator. Clock Voltage (typically VCCSYN): This voltage typically same core logic voltage, VDD, needs isolated from that transient noise does couple into clock circuitry. This separation usually done with filter between VCCSYN, also accomplished using separate linear regulator VCCSYN. some applications multiple PowerPCs used single board; these boards often power supply solutions shared they sized cumulative maximum load. Memory, FPGAs ASICs also require specific supplies. Memory power solutions discussed page FPGA power solutions, please refer company-specific Powering FPGA Application Guides available www.intersil.com/data/AG.
Recommended Power Supply PowerPC PowerQUICC Families
PowerPC 74XX Processors
Single Solution VDDL, VDDH VCCSYN ISL6521 Sync Buck plus linears (pages 4-5) High Efficiency, Single Solution VDDL VDDH ISL6539 Dual Sync Buck (page +3.3V Solution ISL6526 cost Sync Buck (table page Ease-of-Use Solution MPC7410 EL7558 VDDL (page linear regulator VDDH >20Amp Solution (may required using MPC7447/55/57 clocking >1GHz) ISL6563 two-phase Synchronous Buck with Integrated drivers (table page
PowerPC 8540 PowerQUICC 85XX Processors
Single Solution VDDL, VDDH VCCSYN ISL6521 Sync Buck plus linears (pages 4-5) High Efficiency, Single Solution VDDL VDDH ISL6539 Dual Sync Buck (page
PowerQUICC 82XX PowerPC 82XX Processors
Single Solution VDDL, VDDH VCCSYN ISL6521 Sync Buck plus linears (pages 4-5) Ease-of-Use Solution EL7562 VDDL (page linear regulator VDDH
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Recommended Solutions Power Requirements PowerPC PowerQUICC Device Families
Motorola PowerPC Host Processors
Device MPC7455/57 MPC7447 MPC7445 MPC7441/51 MPC7410 MPC755 MPC750 MPC745 MPC740 MPC603E Generation Peak ICORE Current Requirement VDDL 1.3, 1.6, 1.85 1.1, 1.3, 1.5, 27.0 23.1 18.8 12.7 11.9 ISL6521, EL7554 ISL6528 EL7554 Recommended Intersil Power Solutions ISL6563 ISL6521 ISL6539 EL7558 ISL6521 +3.3V
ISL6526
Motorola PowerPC Integrated Host Processors
Device MPC8540 MPC8245 MPC8241 MPC8240 Generation Peak ICORE Current Requirement VDDL 10.0 est. Recommended Intersil Power Solutions ISL6521 ISL6539 ISL6521, EL7532 ISL6528 +3.3V ISL6526 EL7532
Motorola PowerQUICC Communications Processors
Device MPC8560 MPC8540 MPC8280 MPC8270/75 MPC8264/65/66 MPC8260 MPC8250/55 MPC85X/86X MPC823 Generation Peak ICORE Current Requirement VDDL 1.8, 1.9, 1.8, est. est. ISL6410A ISL6410 ISL6521, EL7532 ISL6528 EL7532 Recommended Intersil Power Solutions ISL6521 ISL6539 +3.3V ISL6526
VDDL Peak currents calculated from PowerPC selection guides Motorola's website Feb. 2004.
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Single Solution Supplying VDDL, VDDH VCCSYN
ISL6521 Switcher VDDL Linear Regulators VDDH VCCSYN.
Multi-output products that incorporate multiple switchers and/or linears single package excellent choice PowerPC-based designs. These combination devices provide voltages required single board, they adjusted provide optimum responses application. Good layout bypassing techniques plus excellent on-chip isolation prevents supplies from interacting. ISL6521 provide required currents voltages 16-pin SOIC package with minimal external components. ISL6521 implements highly efficient synchronous buck design addition includes three linear regulators, which provide voltage additional voltages board. Currents less than 120mA supplied directly from linear regulator drive pins shown here VCCSYN) they used control external transistor supply currents 3Amps shown here VDDH VOTHER). complete data sheet available Simulation tools also available http://www.intersil.com/isim/. example shown here VDDL 1.5V VDDH 2.5V, output voltages programmable from 0.8V 4.5V.
+5VIN
0.1µF
MA732
ISL6521
BOOT
OCSET
VDDH (e.g. 2.5V with
10µF
DRIVE2
Linear Regulator
0.47µF
UGATE
12.7k
5.9k
PHASE
LOUT
(Adjustable 1.5V shown/5A 20A) (see table next page)
VDDL
LGATE
Switching Regulator
10µF
PowerPC
PGND
DRIVE3
VCCSYN
100µF
10µF
Linear Regulator
COMP
2.0k
DRIVE4
Linear Regulator
VOTHER
2.26k
Figure Highly Integrated ISL6521-Based Solution Memory Power Solutions, page Sequencing ICs, page
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Single Solution VDDL, VDDH VCCSYN
following bill-of-materials table shows external products selected Intersil's applications engineers optimize IDDL design 20A.
Component Selection Table
ICCINT
LOUT
7.5µH Pulse P1172.103 4.8µH Sumida CDEP134 1.6µH Sumida CDEP134 0.5µH Pulse PG0006.601
IRF7910 IRF7460 IRF7821 2xIRF7821
IRF7910 IRF7476 IRF7832 2xIRF7832
Q3/Q4
FZT649 less) 2SD1802 less) 2SD1802 (3Aor less) 2SD1802 (3Aor less)
1x1000µF 10MBZ1000M 10x12.5 2x1000µF 10MBZ1000M 10x12.5 2x1800µF 10MBZ1800M 10x20 3x1500µF 10MBZ1500M 10x16
1x1000µF 6.3MBZ1200M 8x16 2x1800µF 6.3MBZ1800M 10x16 2x3300µF 6.3MBZ3300M 10x23 3x3300µF 6.3MBZ3300M 10x23
ISL6521 automatically initializes upon receipt input power. Power-On Reset (POR) function continually monitors input bias supply voltage pin. function initiates soft-start operation after bias supply voltage exceeds threshold. voltages rise monotonicly less than 40ms. Also, ISL6521 includes bootstrap circuitry that allows solution powered from single supply shown Figure
Smallest Size, Output Voltages
ISL6528 8-pin, Cost Switcher VDDL Linear Regulator VDDH
ISL6528 easily provide required current voltages most PowerPC PowerQUICC devices 8-pin SOIC package with minimal external components. VDDL supplied standard buck switcher with bootstrap circuitry which enables operate from supply. +12V supply available, related ISL6529 offer even higher efficiency since implements synchronous buck design. VDDH supplied linear regulator using external transistor minimize heat dissipated ISL6528. VDDL VDDH voltages both resistor dividers ground. This configuration applicable VDDL from 0.8V 3.3V approximately 15A, VDDH from 0.8V 3.3V complete data sheet ISL6528 available deviceinfo.asp?pn=ISL6528, along with technical brief. Simulation tools also available http://www.intersil.com/isim/.
+3.3V
330µF
330µF
BAT54
0.1µF
UGATE
1.71µH
VDDL (6A)
C9,C10 2x470µF
PowerPC
VDDH (1A)
DRIVE2
11.3k
ISL6528
BOOT COMP
150pF 39.2k
470µF 5.36k
1500pF
2.32k
FDS6690A FZT649 ETQ-P6F1R8BFA B520C-13
Fairchild Fairchild Panasonic Diode Inc.
2.67k 0.018µF 30.9
Figure Cost, Small Board Space ISL6528-Based Solution
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Ease-of-Use Core Power Solutions MPC7xx MPC82xx Processors
+3.3V Solutions EL75XX Family Integrated Switchers ISL6410/A
Intersil's EL75xx family highly integrated switching regulators require only external components because power FETs integrated device. Input voltages possible continuous output currents amps available (see table below). These products make very compact, >90% efficient solution either VDDL VDDH. Additionally, systems continuous output EL7558 available. Component selection software, evaluation boards Gerber files available deviceinfo.asp?pn=EL7566.
21.5K
8200pF 0.047µF
COMP
SGND COSC
270pF
VREF
0.22µF
EL7566
PGND PGND PGND 100µF
VOUT (2.5V, 2.7µH 150µF
VDDL VDDH
PowerPC
Figure 3.3V EL7566-Based Integrated Buck Solution
Figure 6Amp EL7566 Eval Board (Actual Size)
Intersil's Family Buck Regulators with Integrated FETs
Part Number ISL6410 ISL6410A EL7534 EL7536 EL7532 EL7554 EL7566 EL7558 Range 3.0V 3.6V 4.5V 5.5V 2.5V 5.5V 2.5V 5.5V 2.5V 5.5V 4.5V 5.5V VOUT Selectable 1.2V, 1.5V 1.8V Selectable 1.2V, 1.8V 3.3V 0.8V 0.8V 0.8V 0.8V 0.8V 3.8V IOUT 0.5A 0.5A 0.6A Pkg/Pin MSOP-10, QFN-16 MSOP-10, QFN-16 MSOP-10 MSOP-10, DFN-10 MSOP-10, DFN-10 HTSSOP-28 HTSSOP-28 HSOP-28
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Highest Efficiency, VDDL VDDH Solution
Highly Flexible Dual Switcher Solution ISL6539 ISL6227)
ISL6539 create most efficient dual-output solution using synchronous buck switchers supply VDDL VDDH. addition, ISL6539 built-in sequencing control features that used implement PowerPC PowerQUICC specifications while minimizing cost size solution. ISL6539 also offers wide input range from +4.5V 18V, ISL6227 offered with 24V. complete data sheet application note available asp?pn=ISL6539.
+4.5V +15V
MA732
MA732
1.0µF
10µF
0.15µF
0.15µF
10µF
10µF
BOOT1
BOOT2
VDDH +2.50V 3.0A
10µH
Si7844DP
UGATE1 PHASE1
UGATE2 PHASE2
10µH Si7840DP
VDDL
PowerPC
4.99K
17.8K
330µF
ISEN1
ISEN2
4.99K
LGATE1 PGND1
ISL6539
LGATE2 PGND2
330µF
15nF
Si7844DP
Si7840DP
15nF
VSEN1
VSEN2 OCSET2 SOFT2
10nF
VPULLUP
OCSET1
SOFT1
VDDH
6.65K 10.0K 17.8K 26.7K
100K
95.3K
10nF
PG2/REF
100K
POWER GOOD VCCO ENABLE POWER GOOD VCCINT
Figure Very Power-Efficient ISL6227 ISL6539-Based Solution Memory Power Solutions, page design shown used supply both VDDL VDDH completely independently with high efficiency. Efficiency enhanced using lower MOSFET rDS(ON) current sense element. ISL6539 control independent output voltages adjustable from 0.9V 5.5V. Power-up sequencing available integrated softstart/enable pins.
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Intersil Switchers Powering PowerPC-based Systems
Intersil Switchers Powering Motorola PowerPC
Device ISL6521 HIP6021 ISL6520 ISL6526 ISL6526A ISL6528 ISL6529 ISL6410 ISL6410A EL7534 EL7536 EL7532 EL7554 EL7566 EL7558 ISL6224 ISL6227 ISL6402/A ISL6539 ISL6558 ISL6563 Description Sync Buck Linears Sync Buck Linears Control Simple, 8-pin Sync Buck Voltage Sync Buck 300kHz High Frequency Sync Buck 600kHz Std. Buck Linear Sync Buck Linear 0.5A Integrated Buck 0.5A Integrated Buck 0.6A Integrated Buck Integrated Buck Integrated Buck Integrated Buck Integrated Buck Integrated Buck High Efficiency Sync Buck Dual Sync Buck with Wide Input Range Dual Sync Buck Linear Dual Sync Buck with Sequencing Multiphase Sync Buck Multiphase Sync Buck with Drivers Range 2.5V 3.3V 3.3V 3.3V 2.5V 5.5V 2.5V 5.5V 2.5V 5.5V 4.5V 5.5V 3.3V 4.5V 4.5V 4.5V VOUT Range 0.8V 4.5V 1.3V 3.5V 0.8V 0.8V 0.8V 0.8V 3.3V 0.8V 3.3V 1.2V, 1.5V 1.8V 1.2V, 1.8V 3.3V 0.8V 0.8V 0.8V 0.8V 0.8V 1.0V 3.8V 0.9V 5.5V 0.9V 5.5V 0.8V 0.9V 5.5V 0.8V 0.9V 3.9V IOUT 0.5A 0.5A 0.6A 100A Pkg/Pin SOIC-16 SOIC-28 QFN-16, SOIC-8 QFN-16, SOIC-14 QFN-16, SOIC-14 SOIC-8 SOIC-14, QFN-16 QFN-16, MSOP-10 QFN-16, MSOP-10 MSOP-10, DFN-10 MSOP-10, DFN-10 MSOP-10, DFN-10 HTSSOP-28 HTSSOP-28 HSOP-28 SSOP-16 SSOP-28 QFN-28, TSSOP-28 SSOP-28 SOIC-16 QFN-24
Sequencing Supervisory
+5VIN
MA732
BOOT
Supply Sequencers
Part Number ISL6123/4 ISL6125
2.0k
DRIVE2
18.2k
OCSET
Range 1.5V 5.5V 1.5V 5.5V 1.5V 5.5V
Sequenced Range +0.7V +5.5V +0.7V +5.5V +0.7V +5.5V
Comments Fully featured with charge-pump Fully featured with open drain logic Fixed Sequence with charge-pump
Package QFN-24 QFN-24 QFN-24
UGATE
5.9k
PHASE
LOUT
ISL6521
DRIVE3
12.7k 5.9k
LGATE
PGND
COMP
ISL6127
VOUT1 1.5V VOUT4 1.8V VOUT3 2.5V VOUT2 3.3V
DRIVE4
2.26k
9.09k
7.15k
Supervisory
Part Number ISL6131 ISL6132 ISL6536/A ICL7665S Range 1.5V 5.5V 1.5V 5.5V 2.7V 5.0V 1.8V Supervised Range +0.7V (min) +0.7V (min) +0.7V (min) +1.3V (min) Comments Quad undervoltage Dual over/ under voltage Quad undervoltage Micropower over/ under detector Package QFN-24 QFN-24 SOIC-8 SOIC-8, PDIP-8
UVLO_A UVLO_B UVLO_C UVLO_D
DLY_OFF_D DLY_OFF_C DLY_OFF_B
Intersil offers family voltage sequencers that control power-up power-down sequences voltage (0.7V 5.5V) power rails. They daisy-chainable allow sequencing higher numbers rails well. Intersil also supplies cost effective voltage supervisory circuits monitor power supply outputs.
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GATE
DLY_ON_D
ISL6123
GATE
DLY_ON_C
GATE
DLY_OFF_A DLY_ON_B
ENABLE
SYSRST#
RESET#
GROUND
DLY_ON_A
GATE
+5VSB
Intersil Powers Memory
Double Data Rate (DDR) Synchronous Dynamic Random Access Memory (SDRAM) today's memory choice many applications. name implies, SDRAM operates rate double that previous-generation Random Access Memory (RAM). While previous SDRAM allowed memory access clock cycle, SDRAM allows memory accesses cycle. Thus, data handling faster more efficient. addition dramatic increase data rate, memory requires less power because operates from lower source voltage, 2.5V compared 3.3V older SDRAM. Newer DDR-II memory operates further reduced voltage 1.8V (VDDQ).
utilize memory, special power considerations have addressed. memory requires three highly regulated voltages referred VDDQ, VREF VDDQ main high-current supply. memory termination voltage that half VDDQ (VDDQ/2). VREF low-power reference voltage that tracks half VDDQ which compared, where VREF DDR, VDDQ supply 2.5V produces high current power memory along with clock synthesizer core. Because this, VDDQ supply usually synchronous buck, switching regulator. supply must source sink current data lines. This also best handled synchronous buck regulator since linear regulators standard bucks cannot sink current.
PGOOD
ROCSET
OCSET/SD
RESET
PGOOD
BOOT1
DBOOT1
UGATE1
GNDA
PHASE1
CBOOT1
LOUT1
VDDQ
PVCC1
COUT1
SLEEP
V2_SD
LGATE1
VREF (.5xVDDQ)
VREF_IN VREF
COMP1
PGND1
ISL6531
DBOOT2
BOOT2 UGATE2
RTT1
CBOOT2
PHASE2
RTT2
SRAM
LOUT2 COUT2
RFB1
SENSE1
LGATE2 PGND2
RTTN
SENSE2
Intersil worked closely with industry chipFigure Typical Memory Power Solution makers memory manufacturers provide power solutions that supply required voltages along with full range protection features. What's more, Intersil looked opportunities value beyond basic memory power requirements. doing, Intersil offers selection memory power that offer very high integration small packages.
Intersil's Power Supply Solutions Memory
Complete Solutions ISL6530 ISL6531 ISL6227 ISL6532/A ISL6534 ISL6539 Single Solutions ISL6520/A ISL6522/A ISL6527/A 4.5V 2.5V 3.3V 12V, 4.5V 12V, 3.3V Small, cost 1%/0.5% regulation External input Comments With VREF output Internally compensated Automatic light/heavy load selection Includes standby LDO, ACPI compliant Includes standby Dual with mode Comments SOIC-8 SOIC-14, QFN-16, TSSOP-14 SOIC-14, QFN-16 Pkg/Pins SOIC-24, QFN-32 SOIC-24, QFN-32 SSOP-28 QFN-20/28 TSSOP-24, QFN-32 SSOP-28 Pkg/Pins
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Power Converter Layout Considerations
Layout very important high frequency switching converter design. With power devices switching efficiently 300kHz higher, resulting current transitions from device another cause voltage spikes across interconnecting impedances parasitic circuit elements. These voltage spikes degrade efficiency, radiate noise into circuit lead device over-voltage stress. Careful component layout printed circuit board design minimizes voltage spikes converters. example, consider turn-off transition MOSFET. Prior turn-off, MOSFET carrying full load current. During turn-off, current stops flowing MOSFET picked lower MOSFET. parasitic inductance switched current path generates large voltage spike during switching interval. Careful component selection, tight layout critical components short wide traces, minimize magnitude voltage spikes. There sets critical components DC-DC converter. switching components most critical because they switch large amounts energy, therefore tend generate large amounts noise. Next small signal components that connect sensitive nodes supply critical bypass current signal coupling. multi-layer printed circuit board recommended. Figure shows connections critical components ISL6530-based converter. Note that capacitors COUT could each represent numerous physical capacitors. Dedicate solid layer, usually middle layer board, ground plane make critical component ground connections with vias this layer. Dedicate another solid layer power plane break this plane into smaller islands common voltage levels. Keep metal runs from PHASE terminals output inductor short. power plane should support input power output power nodes. copper filled polygons bottom circuit layers phase nodes. remaining printed circuit layers small signal wiring. wiring traces from GATE pins MOSFET gates should kept short wide enough easily handle required drive current.
ISL6530
BOOT1
CBOOT1
UGATE1
PHASE1
PHASE1
LOUT1
VDDQ
LGATE1
PGND1
COUT1
COMP1
SENSE1
BOOT2
UGATE2
VDDQ
CBOOT2
PHASE2
LGATE2
PHASE2
LOUT2
LOAD
COUT2
PGND2
COMP1
switching components should placed close controller (ISL6530 Figure first. Minimize length connections between input capacitors, power switches placing them nearby. SENSE2 Position both ceramic bulk input capacitors close upper MOSFET drain possible. Place output inductor output capaciKEY tors between upper MOSFET load. critical small signal ISLAND POWER PLANE LAYER components include bypass capacitors, feedback components, ISLAND CIRCUIT PLANE LAYER compensation components. Position bypass capacitor, close CONNECTION GROUND PLANE with directly ground plane. Place controller compensation components close COMP pins. feedback resistors both regulators should also located close possible Figure Switching Power Supply Layout relevant with vias tied straight ground plane required. Recommendations Using
ISL6530 Example
LOAD
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Power Typical Microprocessor-based System
Power
HIP6301/HIP6601B HIP6302/HIP6602B ISL6402 ISL6406 ISL6558/HIP6601B ISL6560/HIP6602B ISL6559/HIP6602B ISL6569/HIP6602B ISL6556A/B, ISL6605 ISL6561, ISL6605 ISL6563 ISL6563A/B
DRAM Microprocessor
DDRAM Power
Core Term.
ISL6520 ISL6520A/B ISL6522 ISL6530/31 ISL6532 ISL6532A/32B ISL6534 ISL6224 ISL6227A/26 IPM6210A
System Power Control
Power Sequencing
ISL6123 ISL6124 ISL6125 ISL6126 ISL6127 ISL6128 HIP1020
Supervisory
ISL6131 ISL6132 ICL7665S ISL6536 ISL6550
ORing Control
ISL6144
FGPA/ASIC Power
ISL6521 ISL6227 ISL6520 ISL6526 EL7556 ISL6558 ISL6410/A
ISL6529 ISL6539 HIP6012 HIP6601BE ISL6522A ISL6563 EL7558B EL7536 EL7562 EL7554
FPGA/ASIC/ ASSPs
Pluggable Expansion
Swap Protection
ISL6111 HIP1011 HIP1011D ISL6118 HIP1012A ISL6161 ISL6115/16
Interface
ISL6119 EL7551 EL7512
Control
Cont. Power
Core
ISL6520 HIP6012 EL7551 EL7562 EL7564
Battery Management
ISL6291 ISL6292 ISL6293 ISL6295 ICL7673
Peripheral Power
ACPI General Control Purpose
HIP6501A HIP6502B HIP6503 ISL6504 ISL6505 ISL6521 ISL6227 ISL6401 ISL6402 ISL6406 ISL6439 ISL6522 ISL6526 ISL6528
Intersil recognized global leader power management solutions, offering broad portfolio products that will simplify your power designs. Intersil's Endura family power management products ranges from building blocks such charge pumps highly integrated multiple output multiphase PWMs dual voltage swap controllers. leading supplier controller with over billion shipped, Intersil meet your power needs provide following benefits your designs: Superior technical support Reference designs evaluation boards Unprecedented performance reliability High efficiency Complete system monitoring protection (reduces need many external components) Industry wide adoption compatibility
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