SM205EV SMM205EVAL fully functional printed circuit board designe

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SM205EV SMM205EVAL fully functional printed circuit board designe

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SMM205 Evaluation Quik-Start User's Guide
SM205EV
SMM205EVAL fully functional printed circuit board designed demonstrate features SMM205 Nonvolatile, Dual Channel Voltage Marginer Active Output Controller (ADOC). SMM205EV operates from +3.3V-+5V +12V supply includes non-isolated DC-DC converters. external precision voltage reference permits DC-DC Several key, user-configurable functions are: Programmable nominal, high trim/margin voltages Under-Voltage Over-Voltage (UV/OV) fault monitoring User-Programmable External Internal VREF Multiple supply voltage schemes (12V 3.3V-5.0V) User-Programmable Byte Non-Volatile EEPROM converters trimmed within 0.2% tolerance. SMM205EVAL manages voltage monitoring, margining trimming DC-DC converters. Converter voltage margining along with many other programmable features permitted through 2wire interface. Additional features included EVAL board: connect Power Signal pins User-Programmable Interface connector digitally control DC-DC converter Trim/Margin voltages, etc. Low-Profile, Non-Isolated DC-DC converters with Trim/Enable/Sense Functions 28-pin Spring-Loaded Socket SMM205 Status Indicators (LED) READY, FAULT#. Large ground plane minimizes voltage errors
SMM205EV User's Guide Table Contents
Operating Instructions (Pgs. Performance Measurements (Pgs. 3-6) SMM205EV Schematic (Pg.7) Layout Drawings (Pg. Bill Materials (vendor sources) (Pg. Comments Precautions (Pg. Dongle pin-out photo (Pg.
Evaluation Contents
Fully Functional SMM205 Evaluation Board. SMM205 Evaluation User's Guide. Dongle Programmer Interface Card. Dongle Interface Cable meter). CD-ROM containing: SMM205EV Gerber Files, Software, file, Application Notes/Briefs. Visit `www.summitmicro.com' current information.
VREF_CNTL VREF
READY FAULT#
COMP1 OV/UV
Output Control
COMP2
Trim Drive
TRIM TRIM _CAP
OV/UV
START
Serial Interface
Input Voltage Sensing Signal Conditioning Configuration Registers Memory
12VIN VDD_CAP
3.6/5V Regulator
Figure SMM205 Simplified Block Diagram Figure SMM205 Evaluation Board
©SUMMIT MICROELECTRONICS, Inc., 2003 www.summitmicro.com Drive, Jose, 95131-2312 6/19/03 Phone 408-436-9890 408-436-9897
SMM205EV Quik-Start User's Guide
Operating Instructions
Test Equipment Required Personal Computer with Windows later O/S) parallel port. Power Supply, 500mA. Oscilloscope, Digital sampling, 4-channel High Accuracy (e.g., HP34401A equivalent) Test Steps Software setup Close open Windows application programs. Insert "SMM205EV Software" into CD-ROM drive. Follow installation instructions, rebooting computer when prompted. After computer reboots, perform full power shutdown install Dongle. Dongle installation Caution: apply power sources SMM205 evaluation board while Dongle connected board. Remove existing cabling from computer's parallel port (LPT1). Connect Dongle parallel port. Insert Dongle cable onto SMM205 Evaluation board connector (pin board corresponds white wire with orange stripe, also SMX3200 Dongle Info Page SMX3200 Data Sheet ROM, site document package). Reapply power computer. After computer restarts, open `SMM205 Programmer' application program click `Standard Settings' button then `Read Config' button. dialog shown Figure will appear screen. Note: SMM205 device registers preconfigured with Default Configuration Settings shown SMM205 data sheet. Settings specific SMM205EV evaluation included Intel format file located programmed into SMM205 samples shipped with SMM205EV kit. Optional: Click `HEX' folder icon load `SMM205EV.Default Hex' file from CD-ROM drive. Optional: Click `Write Config' button. This configures SMM205 registers accurately monitor DC-DC converters along with performing other supervisory functions. Hardware Note: Dongle interface generates impedance source power program SMM205. Ensure jumpers their correct position displayed Figure jumper START connector must place when powering SMM205 removed during normal operation Start ADOC function. START polarity programmable normally driven logic signal. Connect power source EVAL board follows: Connect terminal supply `GND' connect closest `+12V' connect pin. Connect terminal supply either `VDD' connect pins. Switch power source READY (D3) indicates that DC-DC converter enabled within programmed tolerances. Explore SMM205 features changing many configurable parameters. Confirm programmed settings agree with actual measurements. Observe functionality SMM205 varying nominal, high settings confirming DC-DC converter output voltages change according programmed settings. Only Operation: SMM205 Eval Board designed operate from because DC-DC Converters populated boards specified operate from inputs. order operate board from +12V only, DC-DC converters Eval should removed populated with input devices. Also, jumper labeled "DC_DC +VIN" must moved from "Vdd" "12V" positions must applied "12V" pin. apply voltage "VDD" pin.
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SMM205EV Quik-Start User's Guide
Figure SMM205 Default Programmer Window with Read Config button depressed.
Performance Measurements
Assuming input voltage within SMM205 limits, application power board will enable DC-DC converters their output voltages pre-programmed settings. change nominal output voltage setting, simply click `ADOC' adjust value `Nominal' window under Output Control' (see Figure value will appear output DC-DC converter after `Write Config' button depressed. actual converter output voltage found clicking `Read' button under `Margin Command Status' text.
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SMM205EV Quik-Start User's Guide
Figure 4:Setting Nominal DC-DC Converter Output Voltages.
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SMM205EV Quik-Start User's Guide
further demonstration SMM205 features, Voltage Margining performed DCDC converters (Figure Channels first selected `Margin High' then `Write' button below clicked begin process. seen Figure DC-DC converter begins completes margin high event approximately 600mS.
Figure Using `Margin Command' Enable Voltage (High) Margining DC-DC Converter. Next, manipulated margin power supply voltage (Figure After selecting `Margin Command' `Low', `Write' button again clicked. Figure displays Margin event. time required this event same Margin High event; approximately 600mS.
Figure SMM205EV Margin High Waveform Tektronix TDS3054: Time/Horizontal division 200mS
(500mV/Div) 2.5V DC-DC converter output (Yellow trace) (500mV/Div) 1.5V DC-DC converter output (Blue trace)
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SMM205EV Quik-Start User's Guide
Figure Using `Margin Command' Enable Voltage (Low) Margining DC-DC Converter.
Figure SMM205EV Margin Waveform Tektronix TDS3054: Time/Horizontal division 200mS (500mV/Div) 2.5V DC-DC converter output (Yellow trace) (500mV/Div) 1.5V DC-DC converter output (Blue trace)
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SMM205EV Quik-Start User's Guide
TP10 TP24
Vddcap
0.1uF 0.01uF DC-DC Enable 0.1uF 0.01uF +Vin +Vin Enable +Vin
DC-DC +VIn DIODE 0.01uF Fault# Ready TP19 TP20 Vddcap 0.01uF 0.1uF 0.1uF 0.01uF VRef_Cntl 0.1uF VRef LM4121 VOut
DC-DC +Vout +Vout +Vout Sense Trim
Dongle
Start
0.1uF
0.01uF
TP21 TP22 TP23 Start Ready Fault#
+Vout TP11 Trim TP14 +Vout TP15 Trim
VddCap 12VIn
Start Ready FaultB Filt
VRef Cntl
TrimA Trim CapA TrimB Trim CapB
Gnd3 Rsrv5 +10V Rsrv8 Rsrv10
SMM205
Comp1 Comp2 DC-DC Enable ~10K ~10K
0.1uF
0.1uF
Filt 0.02uF 0.01uF 0.1uF 0.01uF +Vin +Vin Enable +Vin DC-DC +Vout +Vout +Vout Sense Trim
TP16
TP12TP13 0.01uF
0.1uF
0.01uF
TP18TP17 Comp2 Comp1
Figure SMM205 Evaluation Board Schematic includes non-isolated DC/DC converters.
Figure SMM205 Evaluation Board Silkscreen
Figure SMM205EV Copper
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SMM205EV Quik-Start User's Guide
Figure SMM205EV Bottom Copper
Comments Precautions
Ensure that SMM205 device securely seated 28-pin Spring-Loaded Socket correctly oriented indicated block dot/void part marking orientation. Occasionally, socket lose contact from oxidation. With power turned-off, reseat device pressing down releasing socket. SMM205 precision integrated circuit requiring certain attention spent with regards component selection printed circuit board layout ensure greatest possible performance. Since SMM205 does measure voltage differentially, special attention must paid where part's connected. measurements best made load power supply, should also connected power supply return load. Accurate measurement supply possible laying such that large copper trace from supply voltage return load) routed directly SMM205 joined together there `star ground'). large trace ensures that currents flowing between supply returns does result voltage drop occurring between point load single point connection made SMM205 pin. Choose low-leakage ceramic film capacitors TRIM_CAP ADOC function, making sure these components located close SMM205 possible. Although internal voltage reference available, higher accuracies possible using external 0.1% reference. Locate this device nearby SMM205 keep ground connection from reference SMM205 short possible. FILT_CAP physical location important that forms low-pass filter with filter DC-DC converter switching noise. ceramic capacitor sufficient this purpose.
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SMM205EV Quik-Start User's Guide
Table SMM205 Evaluation Board Parts List Item DescriptionResistors 10K, 1/10W, 0805,
Vendor Part Number
Ref. Des. R5R9, RT1,
1/10W, 0805, Digi-Key, 235-1029-ND 10K, Thermistor, 0805, Capacitors 0.1uF, 50V, ceramic, X7R, 1206,
0.01uF, 50V, ceramic, X7R, 1206, 0.02uF, 50V, ceramic, X7R, 1206, Semiconductors LED, Red, 0805, Diode, Small Signal, 1N4148, Voltage Reference, LM4121IM5-1.2CT DC-DC Converter, Non-Isolated, SMM205 Hardware Connector, Test Point Connector, 18-pin, dual-row, 0.1" spacing (2-pin) Connector, 10-pin, dual-row, 0.1" spacing Jumper, 2-pin, 0.1" spacing Socket, 28-pin, spring-loaded SMM205EV Printed circuit board
C14, C15, C17, C18, C9C13, C16, C19,
Digi-Key, 160-1176-1-ND Digi-Key, LM4121IM5-1.2CT-ND Power One, SIS12V Series Summit Micro Electronics
(Various)
Milmax, 0300-1-15-01-47-27-10-0 Digi-Key, S2112-36-ND Digi-Key, S2112-36-ND Digi-Key, 929955-06-ND Plastronics, 28QN50T15050-F Summit Microelectronics
TP1-TP24 (Various) J2-J11 (Various) (I2C) (Various) (Reference)
Note Substitute DC-DC Converters vertical mount format used such Tyco Austin Lynx series SynQor NiQor series. Different output voltage levels also substituted long SMM205 programmed levels.
©SUMMIT MICROELECTRONICS, Inc., 2003 www.summitmicro.com
Drive, Jose, 95131-2312
Phone 408-436-9890 408-436-9897
6/19/03
SMM205EV Quik-Start User's Guide
View SMX3200 cable connector
Name Ground Ground Reserved Volts Reserved Volts Reserved Wire Color Code white orange orange white green green blue white blue brown white brown
SMX3200 wire color code Parallel Port Dongle
SMX3200 Cable Connector Figure SMX3200 Dongle Dongle Interface Cable
NOTICE
SUMMIT Microelectronics, Inc. reserves right make changes products contained this publication order improve design, performance reliability. SUMMIT Microelectronics, Inc. assumes responsibility circuits described herein, conveys license under patent other right, makes representation that circuits free patent infringement. Charts schedules contained herein reflect representative operating parameters, vary depending upon user's specific application. While information this publication been carefully checked, SUMMIT Microelectronics, Inc. shall liable damages arising result error omission. SUMMIT Microelectronics, Inc. does recommend products life support aviation applications where failure malfunction product reasonably expected cause failure either system significantly affect their safety effectiveness. Products authorized such applications unless SUMMIT Microelectronics, Inc. receives written assurances, satisfaction, that: risk injury damage been minimized; user assumes such risks; potential liability SUMMIT Microelectronics, Inc. adequately protected under circumstances.
Revision This document supersedes previous versions. Copyright 2003 SUMMIT Microelectronics, Inc.
trademark Philips Corporation. ©SUMMIT MICROELECTRONICS, Inc., 2003 www.summitmicro.com Drive, Jose, 95131-2312 Phone 408-436-9890 408-436-9897
6/19/03

SM205EV SMM205EVAL fully functional printed circuit board designe

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