SM105EV SMM105EVAL fully functional printed circuit board designe

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SM105EV SMM105EVAL fully functional printed circuit board designe

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SMM105 Evaluation Quik-Start User's Guide
SM105EV
SMM105EVAL fully functional printed circuit board designed demonstrate features SMM105 Nonvolatile, Single Supply Voltage Marginer Active Output Controller (ADOC). SMM105EV operates from +3.3V-+5V +12V supply includes non-isolated DC-DC converter. 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 converter trimmed within 0.2% tolerance. SMM105EVAL manages voltage monitoring, margining trimming DC-DC converter. 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 converter with Trim/Enable/Sense Functions 28-pin Spring-Loaded Socket SMM105 Status Indicators (LED) READY, FAULT#. Large ground plane minimizes voltage errors
SMM105EV User's Guide Table Contents
Operating Instructions (Pgs. Performance Measurements (Pgs. 3-6) SMM105EV Schematic (Pg.7) Layout Drawings (Pg. Bill Materials (vendor sources) (Pg. Comments Precautions (Pg. Dongle pin-out photo (Pg.
Evaluation Contents
Fully Functional SMM105 Evaluation Board. SMM105 Evaluation User's Guide. Dongle Programmer Interface Card. Dongle Interface Cable meter). CD-ROM containing: SMM105EV 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 SMM105 Evaluation Board
Figure SMM105 Simplified Block Diagram
©SUMMIT MICROELECTRONICS, Inc., 2003 www.summitmicro.com
Drive, Jose, 95131-2312 6/19/03
Phone 408-436-9890 408-436-9897
SMM105EV 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 "SMM105EV 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 SMM105 evaluation board while Dongle connected board. Remove existing cabling from computer's parallel port (LPT1). Connect Dongle parallel port. Insert Dongle cable onto SMM105 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 `SMM105 Programmer' application program click `Standard Settings' button. dialog shown Figure will appear screen. Note: When first running SMM105EV Windows GUI, Read Config. (see Figure This will find address part EVAL Board. Once this done, uncheck `Search Address' box. This allows fast Configuration Reads Writes Margining otherwise each operation takes time Programmer will look EVAL Board address possible addresses. Note: SMM105 device registers preconfigured with Default Configuration Settings shown SMM105 data sheet. Settings specific SMM105EV evaluation included Intel format file located programmed into SMM105 samples shipped with SMM105EV kit. Optional: Click `HEX' folder icon load `SMM105EV.Default Hex' file from CD-ROM drive. Optional: Click `Write Config' button. This configures SMM105 registers accurately monitor DC-DC converter along with performing other supervisory functions. Hardware Note: Dongle interface generates impedance source power program SMM105. Ensure jumpers their correct position displayed Figure jumper START connector must place when powering SMM105 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 tolerance. Explore SMM105 features changing many configurable parameters. Confirm programmed settings agree with actual measurements. Observe functionality SMM105 varying nominal, high settings confirming DC-DC converter output voltage changes according programmed settings. Only Operation: SMM105 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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SMM105EV Quik-Start User's Guide
Figure SMM105 Default Programmer Window with Standard Settings button selected.
Performance Measurements
Assuming input voltage within SMM105 limits, application power board will enable DC-DC converter output voltage preprogrammed setting. 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' button under `Margin Command Status' depressed. actual converter output voltage found clicking `Read' button.
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SMM105EV Quik-Start User's Guide
Figure 4:Setting Nominal DC-DC Converter Output Voltage.
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SMM105EV Quik-Start User's Guide
further demonstration SMM105 features, Voltage Margining performed DCDC converter (Figure Channel first selected `Margin High' then `Write' button below clicked begin process. seen Figure DC-DC converter begins completes margin high event approximately 100mS.
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 100mS.
Figure SMM105EV Margin High Waveform Tektronix TDS3054: Time/Horizontal division 40mS
(500mV/Div) 2.0V DC-DC converter output (Yellow trace)
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SMM105EV Quik-Start User's Guide
Figure Using `Margin Command' Enable Voltage (Low) Margining DC-DC Converter.
Figure SMM105EV Margin Waveform Tektronix TDS3054: Time/Horizontal division 40mS (500mV/Div) 2.0V DC-DC converter output (Yellow trace)
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SMM105EV Quik-Start User's Guide
TP10 TP24
Vddcap
0.1uF 0.01uF DC-DC Enable
DC-DC +VIn DIODE
0.01uF
0.1uF 0.1uF
0.01uF
VRef_Cntl 0.01uF 0.1uF VRef LM4121 VOut
0.1uF 0.01uF
+Vin +Vin Enable +Vin
DC-DC Converter
4.7K Start 4.7K
+Vout +Vout +Vout Sense Trim
Dongle
0.1uF
0.01uF
Fault# Ready
0.1uF
TP21 TP22 TP23 Start Ready Fault#
VddCap 12VIn
VRef Cntl
Start Ready Fault#
Gnd3 Rsrv5 +10V Rsrv8 Rsrv10 TP19 TP20 Vddcap
SMM105
Trim Trim Comp1 Comp2 Filt
0.02uF TP16 Filt ~10K
TP11 ~10K Trim +Vout
Dongle Connector
0.01uF 0.01uF
TP12TP13 TP18 TP17 Comp2 Comp1
Figure SMM105 Evaluation Board Schematic includes non-isolated DC/DC converter. Figure SMM105EV Copper
Figure SMM105 Evaluation Board Silkscreen Figure SMM105EV Bottom Copper
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SMM105EV Quik-Start User's Guide
Table SMM105 Evaluation Board Parts List Item DescriptionResistors 10K, 1/10W, 0805, Vendor Part Number Ref. Des. R5R9, RT1,
4.7K, 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, SMM105 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 SMM105EV Printed circuit board
C14, C15, C10-C13,
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-TP13, TP16-TP24 (Various) J2-J9, (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 SMM105 programmed levels.
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SMM105EV Quik-Start User's Guide
Comments Precautions
Ensure that SMM105 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. SMM105 precision integrated circuit requiring certain attention spent with regards component selection printed circuit board layout ensure greatest possible performance. Since SMM105 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 SMM105 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 SMM105 pin. Choose low-leakage ceramic film capacitors TRIM_CAP ADOC function, making sure these components located close SMM105 possible. Although internal voltage reference available, higher accuracies possible using external 0.1% reference. Locate this device nearby SMM105 keep ground connection from reference SMM105 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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SMM105EV 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

SM105EV SMM105EVAL fully functional printed circuit board designe

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