MC33565 Drop Voltage Regulator designed computer peripheral card appli
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MC33565 Smart Voltage Regulator Peripheral Card Applications
MC33565 Drop Voltage Regulator designed computer peripheral card applications, allowing glitch-free transitions from "sleep" "active" system modes. internal logic circuitry detect whether there supply ("active" system mode) auxiliary supply ("sleep" system mode). guaranteed regulated output voltage always available even main supply drops out. regulated output voltage provided either internal dropout voltage regulator external P-channel MOSFET switch, depending system being "active" "sleep" mode.
SOIC-8 SUFFIX CASE
MC565 ALYW
Glitch-Free Transition from "Sleep" "Active" Mode Compatible with Instantly Available Systems Output Current Output Regulated over Temperature Excellent Line Load Regulation (0.4%) Prevents Reverse Current Flow during Sleep Mode Short Circuit Protection
Micro8t (MSOP-8) SUFFIX CASE 846A
M565 ALYW
Applications
Computer Ethernet PCI/NIC Cards
Main Input Switch Drive External P-Channel MOSFET
Assembly Location Wafer Year Work Week
CONNECTIONS
Main Input Auxiliary Input Switch Drive Regulator Output Sense Input
Voltage Detector
Pins internally connected Auxiliary Input Regulator V/200 Ground Reference Regulator Output Sense Input Load MC33565DR2 MC33565DMR2 SOIC-8 Micro8 2500 Tape Reel 2500 Tape Reel
ORDERING INFORMATION
Device MC33565D Package SOIC-8 Shipping Units Rail
Figure Simplified Block Diagram
Semiconductor Components Industries, LLC, 2002
March, 2002 Rev.
Publication Order Number: MC33565/D
MC33565
Main Input 23.1 Voltage Detector 4.02 4.17 Switch Drive External P-Channel MOSFET
10.4
Auxiliary Input
1.25 Reference
Regulator Regulator Output Current Sense Thermal Shutdown Sense Input Load
Ground
Figure Functional Block Diagram
ASSIGNMENTS FUNCTIONS
FUNCTION Main Input Auxiliary Input Sense Input Regulator Output Switch Drive DESCRIPTION This input connects system main power source, typically connection. These pins internally connected. This input connects system auxiliary power source, typically This regulator control circuit power ground. sense input connects directly load allowing precise regulation. This output precisely regulated capable This output designed drive gate external P-channel MOSFET switch.
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MC33565
MAXIMUM RATINGS (Notes
Rating Main Input Voltage Range (Pin Auxiliary Input Voltage Range (Pin Thermal Resistance Junction Suffix, SOIC-8, Case Suffix, MSOP-8, Case 846A Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, seconds) Symbol Vin(M) Vin(A) Tstg -5.0 +150 +150 Value -0.5 +7.0 -0.5 +7.0 Unit °C/W
ELECTRICAL CHARACTERISTICS (Vin(A) Vin(M) connected Cpin6,7 typical values
25°C, min/max values -5.0°C 150°C unless otherwise noted.) Characteristic MAIN INPUT (Pin Operating Voltage Range Quiescent Current Output Input Reverse Leakage Current (Vin(M) Vout 25°C) AUXILIARY INPUT (Pin Quiescent Current REGULATOR OUTPUT (Pin Output Voltage Note Vin(M) 25°C -5.0°C 150°C Vin(M) Vth(L) Vin(M) Line Regulation Load Regulation Short Circuit Current 25°C, Note VOLTAGE DETECTOR (Pins Input Threshold Voltage (Figure Output State Transition, Vin(M) Decreasing Output High State Transition, Vin(M) Increasing Hysteresis SWITCH DRIVE OUTPUT (Pin Output Voltage State (Vin(M) Vin(A) Isink High State (Vin(M) Vin(A) Isource Peak Output Current Sink Current (Vin(M) Source Current (Vin(M) Propagation Delay, Main Input Switch Drive Output (Figure Switch Drive Output Fall (Vin(M) Decreasing) Switch Drive Output Rise (Vin(M) Increasing) VO(L) VO(H) Isink(PK) Isource(PK) 0.044 4.15 0.65 Vth(L) Vth(H) 0.120 4.02 4.17 0.150 0.180 Vout 3.267 3.234 Regline Regload 3.333 3.366 13.2 13.2 IQ(A) Vin(M) IQ(M) Symbol Unit
Maximum Ratings those values beyond which damage device occur. This device series contains protection exceed following tests: Human Body Model 2500 883, Method 3015. Machine Model Method Thermal shutdown activation occur when maximum operating junction temperature exceeded.
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MC33565
TYPICAL CHARACTERISTICS
Vth(H) Main Input Voltage Vth(L) Main Input Voltage
Switch Drive Output
Switch Drive Output
Vin(M) rise fall times (10% 90%)
Vin(M) rise fall times (10% 90%)
Figure Voltage Detector Thresholds
Figure Switch Drive Main Input Timing Diagram
Vout capacitor Phase Margin Gain (dB)
Vout capacitor
Phase Margin Gain (dB)
Phase Margin
Phase Margin
Gain
Gain
Frequency (Hz) Vout capacitor over operating temperature range. Maximum permissible over operating temperature range.
Frequency (Hz)
Figure Predicted Gain Phase Zero Load Current
Figure Predicted Gain Phase Full Load Current
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MC33565
VO(H), SWITCH DRIVE OUTPUT VOLTAGE HIGH STATE 4.35 4.30 4.25 4.20 4.15 4.10 4.05 4.00 JUNCTION TEMPERATURE (°C) Vin(M) Vin(A) Isource VO(L), SWITCH DRIVE OUTPUT VOLTAGE STATE (mV) JUNCTION TEMPERATURE (°C) Vin(M) Vin(A) Isink
Isink(PK), SWITCH DRIVE PEAK OUTPUT SINK CURRENT (mA)
Figure Switch Drive Output Voltage High State (external P-channel MOSFET turned off) Junction Temperature
Isource(PK), SWITCH DRIVE PEAK OUTPUT SOURCE CURRENT (mA)
Figure Switch Drive Output Voltage State (external P-channel MOSFET turned Junction Temperature
24.5 24.0 23.5 23.0 22.5 22.0 21.5 21.0 20.5 20.0 19.5 Vin(M)
41.0 40.5 40.0 39.5 39.0 38.5 38.0 37.5 37.0 36.5 JUNCTION TEMPERATURE (°C) Vin(M)
JUNCTION TEMPERATURE (°C)
Figure Switch Drive Peak Output Sink Current Junction Temperature
Figure Switch Drive Peak Output Source Current Junction Temperature
Vout, REGULATOR OUTPUT VOLTAGE
3.310 Vin(M) Regline, LINE REGULATION (mV) 3.308 3.306 3.304 3.302 3.300 3.298 3.296 3.294 3.292 3.290 JUNCTION TEMPERATURE (°C) Vin(M) Iout
Vin(M) Vout Iout
JUNCTION TEMPERATURE (°C)
Figure Regulator Output Voltage Junction Temperature
Figure Line Regulation Junction Temperature
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MC33565
Regload, LOAD REGULATION (mV) JUNCTION TEMPERATURE (°C) Vin(M) Vout Iout IQ(M), MAIN INPUT QUIESCENT CURRENT (mA) Vin(M) Vin(A) Iout JUNCTION TEMPERATURE (°C)
Figure Load Regulation Junction Temperature
Figure Main Input Quiescent Current Junction Temperature
IQ(A), AUXILIARY INPUT QUIESCENT CURRENT (mA)
OUTPUT INPUT LEAKAGE CURRENT (µA) Vin(M) Vin(A) Iout
JUNCTION TEMPERATURE (°C) Vin(M) Vout measured
JUNCTION TEMPERATURE (°C)
Vth(L), VOLTAGE DETECTOR LOWER THRESHOLD
4.028 4.024 4.020 4.016 4.012 4.008 4.004 4.000 3.996 JUNCTION TEMPERATURE (°C) Vin(M) Decreasing
Vth(H), VOLTAGE DETECTOR UPPER THRESHOLD
Figure Auxiliary Input Quiescent Current Junction Temperature
Figure Output Input Reverse Leakage Current Junction Temperature
4.195 4.185 4.175 4.165 4.155 4.145 4.135 4.125 JUNCTION TEMPERATURE (°C) Vin(M) Increasing
Figure Voltage Detector Lower Threshold Junction Temperature
Figure Voltage Detector Upper Threshold Junction Temperature
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MC33565
tDH, SWITCH DRIVE OUTPUT RISE TIME (µS) 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 1.25 JUNCTION TEMPERATURE (°C) tDL, SWITCH DRIVE OUTPUT FALL TIME (µs)
JUNCTION TEMPERATURE (°C)
Figure Switch Drive Output Rise Time Junction Temperature
Figure Switch Drive Output Fall Time Junction Temperature
Trace
Vin(M) Falling Vth(L)
Load
Regulator Output Trace
Vin(A) Bypass Mode
Load Trace
Vout Switching Bypass Mode
Trace
Vout Load Transient Response
mV/div 1.00 V/div 20.0 ms/div TRACE Vin(M) stepping from Vth(L) TRACE Vout switching from regulator output Vin(A)
Figure Load Transient Response
Figure Bypass Mode Transition
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MC33565
OPERATING DESCRIPTION MC33565 designed power managed computer applications such peripheral card interface (PCI) network interface cards (NIC) where glitch-free transitions between supplies necessary. this type application, presence supply represents "active" system mode, while presence represents "sleep" system mode. MC33565 complies with instantly available requirements specified Advanced Configuration Power Interface (ACPI) standards Intel, Microsoft, Toshiba. regulated output voltage available even when supply been shut down only auxiliary supply available. MC33565 supply inputs, Main Input (typically Auxiliary Input (typically MC33565 functions linear regulator while Main Input greater than lower threshold voltage. Below this threshold, internal regulator turns output supplied from Auxiliary Input external P-channel MOSFET. P-channel MOSFET gate controlled Switch Drive Output.
Voltage Detector P-Channel MOSFET Switch Polarity
P-channel MOSFET drain should connected Auxiliary Input, source load gate Switch Drive Output. imperative that polarity P-channel MOSFET reversed. reversed, that drain connected load source connected Auxiliary supply, body diode could forward biased Auxiliary supply voltage below Vout. Consequently, linear regulator would turn would supply current Auxiliary supply rail.
External Compensation
Regulators nature feedback systems. with feedback system, loop stability needs evaluated insure stability. MC33565 requires external compensation capacitor with minimum value stability. Increasing capacitance will improve overall load transient response. equivalent series resistance (ESR) capacitor should less than order output voltage maintained within tight tolerance.
Sense
Internal circuitry detects system being powered from Main Auxiliary Input supply. During normal operating conditions, MC33565 powered Main Input. regulated output voltage provided internal drop voltage regulator. While this mode, gate P-channel MOSFET driven high, turning MOSFET Switch OFF. internal Voltage Detector typical upper lower thresholds 4.17 4.02 respectively. typical hysteresis voltage between upper lower thresholds providing good noise immunity. Main Input supply available supply voltage drops below 4.02 internal regulator turns Switch Drive goes low. This enables external MOSFET Switch, connecting Auxiliary supply load allowing load remain powered even though Main Input supply available. Once Main Input supply voltage above 4.17 MOSFET Switch Drive goes high internal regulator enabled. Voltage Detector logic active throughout entire range Main Input supply ramp Switch Drive signal never turned inappropriately during Main Input ramp output voltage kept above while load biased from Main Input supply.
Input Blocking
Sense Input provides tight regulation output voltage while Main supply present even with varying load current. take most benefit Sense input, connect close possible load. separate trace connect source MOSFET Switch load shown Figure This will help reduce interference coupling Sense Input generated output current. Sense Input required correct device operation.
Vin(A) Switch Drive Output Regulator Output
Sense Input
Figure Voltage Regulation Using Sense Feature Board Layout
internal regulator pass device (NPN transistor) ensures that significant reverse current flows from Vout Main Supply while output powered Auxiliary Supply. Reverse current typically less than over entire operating temperature range.
recommended that MC33565 placed close possible MOSFET Switch compensation capacitor. short traces minimize extraneous signals from being induced Sense Input Switch Drive Signals. Also, avoid routing Sense Input close input load current paths, well Ground return path prevent signal coupling. part list board layout demonstration board using MC33565 SOIC-8 package available. board operates with input voltage between
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MC33565
provides output current demonstration board layout (Silk Screen Layers) shown Figures respectively.
Current Limit Thermal Shutdown
MC33565 incorporates current limit thermal shutdown protect device during fault conditions. device detects current limit short circuit condition, typically device limits drive internal regulator. Thermal shutdown protects internal circuitry event that maximum junction temperature exceeded. When activated, typically 170°C, output disabled. There hysteresis built into thermal
limiting circuit. result, device overheating, output will appear oscillating. This feature provided prevent catastrophic failures from accidental device overheating. intended used substitute proper heatsinking. Please consider that thermal resistance values provided maximum ratings table will vary depending size, adjacent components flow. planning operate device close maximum junction temperature recommended that measure device temperature your application insure junction temperature exceeded.
MGSF1P02ELT
Motherboard/ Mainboard Slot Drive Output
Main Input
Regulator Output MC33565
Auxiliary Input
Sense Input
Card Circuitry
Figure Application Board Schematic (See Figures
Input Main Input
Drive Output Regulator Output
MC33565
Sense Input MTDF1C02HD
Vout
Figure Alternative Application: Card Input with Swap Circuitry
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MC33565
VOUT
VAUX Sense
Figure Demonstration Board Silk Screen Layer
here enable remote sense
Figure Demonstration Board Layer
PARTS LIST
Reference Part/Description Ceramic Capacitor Tantalum Capacitor MC33565D MGSF1P02ELT Vendor Various Various Semiconductor Semiconductor Notes (SOIC-8 Only) P-Channel MOSFET
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MC33565
PACKAGE DIMENSIONS
SOIC-8 SUFFIX CASE 751-07 ISSUE
0.25 (0.010)
SEATING PLANE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSION INCLUDE MOLD PROTRUSION. MAXIMUM MOLD PROTRUSION 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.127 (0.005) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. MILLIMETERS 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 0.10 0.25 0.19 0.25 0.40 1.27 0.25 0.50 5.80 6.20 INCHES 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 0.004 0.010 0.007 0.010 0.016 0.050 0.010 0.020 0.228 0.244
0.10 (0.004) 0.25 (0.010)
Micro8t (MSOP-8) SUFFIX CASE 846A-02 ISSUE
0.08 (0.003)
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSION DOES INCLUDE MOLD FLASH, PROTRUSIONS GATE BURRS. MOLD FLASH, PROTRUSIONS GATE BURRS SHALL EXCEED 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE INTERLEAD FLASH PROTRUSION. INTERLEAD FLASH PROTRUSION SHALL EXCEED 0.25 (0.010) SIDE. MILLIMETERS 2.90 3.10 2.90 3.10 -1.10 0.25 0.40 0.65 0.05 0.15 0.13 0.23 4.75 5.05 0.40 0.70 INCHES 0.114 0.122 0.114 0.122 -0.043 0.010 0.016 0.026 0.002 0.006 0.005 0.009 0.187 0.199 0.016 0.028
SEATING PLANE
0.038 (0.0015)
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MC33565
Micro8 trademark International Rectifier.
Semiconductor trademark registered trademark Semiconductor Components Industries, (SCILLC). SCILLC reserves right make changes without further notice products herein. SCILLC makes warranty, representation guarantee regarding suitability products particular purpose, does SCILLC assume liability arising application product circuit, specifically disclaims liability, including without limitation special, consequential incidental damages. "Typical" parameters which provided SCILLC data sheets and/or specifications vary different applications actual performance vary over time. operating parameters, including "Typicals" must validated each customer application customer's technical experts. SCILLC does convey license under patent rights rights others. SCILLC products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure SCILLC product could create situation where personal injury death occur. Should Buyer purchase SCILLC products such unintended unauthorized application, Buyer shall indemnify hold SCILLC officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that SCILLC negligent regarding design manufacture part. SCILLC Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
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MC33565/D
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