SMM150EV SMM150EVAL fully functional printed circuit board design

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SMM150EV SMM150EVAL fully functional printed circuit board design

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SMM150 Evaluation Quik-Start User's Guide
SMM150EV
SMM150EVAL fully functional printed circuit board designed demonstrate features SMM150 Nonvolatile, Single Supply Voltage Marginer Active Output Controller (ADOC). SMM150EV operates from +2.7V +5.5V supply includes non-isolated DC-DC converter. internall 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 Glitch Filter Wide supply voltage range (2.7V 5.5V) User-Programmable Byte Non-Volatile EEPROM converter trimmed within tolerance. SMM150EVAL 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 SMM150 Status Indicators (LED) READY, FAULT#. Large ground plane minimizes voltage errors
SMM150EV User's Guide Table Contents
Operating Instructions (Pgs. Performance Measurements (Pgs. 3-8) SMM150EV Schematic (Pg.9) Layout Drawings (Pg. 10,11) Bill Materials (vendor sources) (Pg. Comments Precautions (Pg. Dongle pin-out photo (Pg.
Evaluation Contents
Fully Functional SMM150 Evaluation Board. SMM150 Evaluation User's Guide. Dongle Programmer Interface Card. Dongle Interface Cable meter). CD-ROM containing: SMM150EV Gerber Files, Software, file, Application Notes/Briefs. Visit `www.summitmicro.com' current information.
READY
FAULT#
VDD_CAP VREF OV/UV COMP1
Output Control
Glitch Filter
OV/UV
VREF
COMP2
Up/Dn
Margin Target
Digital Comparator
Halt
Control Logic
8-bit
TRIM
Clock
Interface
10Bit
Configuration Registers Memory
CAPM
Figure SMM150 Simplified Block Diagram Figure SMM150 Evaluation Board
©SUMMIT MICROELECTRONICS, Inc., 2004 www.summitmicro.com Drive, Jose, 95131-2312 09/13/04 Phone 408-436-9890 408-436-9897
SMM150EV 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 "SMM150EV 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 SMM150 evaluation board while Dongle connected board. Remove existing cabling from computer's parallel port (LPT1). Connect Dongle parallel port. Insert Dongle cable onto SMM150 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 `SMM150 Programmer' application program click `Standard Settings' button. dialog shown Figure will appear screen. Note: When first running SMM150EV 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: SMM150 device registers preconfigured with Default Configuration Settings shown SMM150 data sheet. Settings specific SMM150EV evaluation included Intel format file located programmed into SMM150 samples shipped with SMM150EV kit. Optional: Click `HEX' folder icon load `SMM150EV.Default Hex' file from CD-ROM drive. Optional: Click `Write Config' button. This configures SMM150 registers accurately monitor DC-DC converter along with performing other supervisory functions. Hardware Note: Dongle interface generates impedance source power program SMM150. Connect power source EVAL board follows (see Figure 12): Connect terminal supply `GND' connect closest `+12V' connect pin. Connect terminal supply `VDD' connect pins. Connect Scope probe test `VM' nearby test pin. Switch power source READY (D3) indicates that DC-DC converter enabled within programmed tolerance. Explore SMM150 features changing many configurable parameters. Confirm programmed settings agree with actual measurements. Observe functionality SMM150 varying nominal, high settings confirming DC-DC converter output voltage changes according programmed settings. DC/DC Operation: SMM150 Eval Board designed operate from only because SMM150 device DC-DC Converters populated boards specified operate from inputs. input DC/DC used, connect "12V" test jumper position.
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SMM150EV Quik-Start User's Guide
Figure SMM150 Default Programmer Window with Standard Settings button selected.
Performance Measurements
Assuming input voltage within SMM150 limits, application power board will enable DC-DC converter allow user output voltage pre-programmed setting. change nominal output voltage setting, simply click Control' adjust value `Nominal' window under `DCSettings' (see Figure value will appear output DC-DC converter after `Send' button under `Margin Command' depressed. actual converter output voltage found clicking `Read' button `ADC Ready Status' box.
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SMM150EV Quik-Start User's Guide
Figure 4:Setting Nominal DC-DC Converter Output Voltage. further demonstration SMM150 features, Voltage Margining performed DCDC converter (Figure Channel first selected `Margin High' beneath `Margin Command' area then `Send' button below clicked begin process. seen Figure DC-DC converter begins completes margin high event approximately 100mS. margin command also performed MUP/MDN switches when "MGN_UP, MGN_DN Pins" selected shown Figure
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SMM150EV Quik-Start User's Guide
Figure Using `Margin Command' Enable Voltage (High) Margining DC-DC Converter. Next, manipulated margin power supply voltage (Figure After selecting `Margin Command' `Low', `Send' button again clicked. Figure displays Margin event. time required this event same Margin High event; approximately 100mS.
Figure SMM150EV Margin High Waveform Tektronix TDS3054: Time/Horizontal division 40mS
(500mV/Div) 2.0V DC-DC converter output (Yellow trace)
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SMM150EV Quik-Start User's Guide
Figure Using `Margin Command' Enable Voltage (Low) Margining DC-DC Converter.
Figure SMM150EV Margin Waveform Tektronix TDS3054: Time/Horizontal division 40mS (500mV/Div) 2.0V DC-DC converter output (Yellow trace)
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SMM150EV Quik-Start User's Guide
MONITOR SMM150 monitors COMP1 COMP2 pins. COMP1 COMP2 high impedance inputs, each connected internally comparator compared against internal reference voltage. Each comparator independently programmed monitor either (Figure monitor level externally with resistive voltage divider. COMP pins connected Vin, Vout voltage that needs monitored. internal comparators COMP1/2 compared VREF, voltage dividers above below 1.25V depending whether monitoring example, monitor 1.7V COMP1 1.3V COMP2, voltage divider resistors are: RUpper 1.37k, RLower 3.83k, RUpper 1.02k, RLower 25.5k, part programmed trigger FAULT# when either COMPx comparator exceeded range. READY FAULT# outputs SMM150 active long triggering limit remains fault condition. READY programmable active high/low open drain output indicates that its' point. When programmed active high output, READY also used input. When pulled low, will latch state comparator inputs. When either COMP1 COMP2 inputs fault, opendrain FAULT# output will pulled status bits will updated (Figure 10). configuration option exists disable FAULT# output while device margining mode.
Figure Setting COMP1/2 Sensors.
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SMM150EV Quik-Start User's Guide
Figure Fault Status bits COMP1/2 Sensors.
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SMM150EV Quik-Start User's Guide
Figure SMM150 Evaluation Board Schematic includes non-isolated DC/DC converter.
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SMM150EV Quik-Start User's Guide
Vout
Figure SMM150 Evaluation Board Silkscreen
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SMM150EV Quik-Start User's Guide
Figure SMM150EV Copper
Figure SMM150EV Bottom Copper
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SMM150EV Quik-Start User's Guide
Table SMM150 Evaluation Board Parts List Item DescriptionVendor Part Number Resistors 10K, 1/10W, 0805, 4.7K, 1/10W, 0805, Digi-Key, 235-1029-ND 10K, Thermistor, 0805, 4.7K, 1/4W, Axial 1/10W, 0805, Capacitors 1uF, 50V, ceramic, X7R, 1206, 0.1uF, 50V, ceramic, X7R, 1206, 0.01uF, 50V, ceramic, X7R, 1206, 0.02uF, 50V, ceramic, X7R, 1206, 10uF, 10V, ceramic, X7R, 1206, 1uF, 10V, Axial Semiconductors LED, Red, 0805, Diode, Small Signal, 1N4148, Voltage Reference, LM4121IM5-1.2CT DC-DC Converter, Non-Isolated, SMM150 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 Push Button Switch SMM150EV Printed circuit board Digi-Key, 160-1176-1-ND Digi-Key, LM4121IM5-1.2CT-ND Power One, SIS12V Series Summit Micro Electronics
Ref. Des. R5-R9, RT1, C14, C15, C10C13, (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 Digi-Key, PTS635SL50 Summit Microelectronics
TP1-TP13, TP16TP24 (Various) J2-J9, (Various) (I2C) (Various) (Reference) SW1, SMM150EV
Note Substitute DC-DC Converters vertical mount format used such Tyco Austin Lynx series SynQor NiQor series. Different output voltage levels also substituted long SMM150 programmed levels.
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SMM150EV Quik-Start User's Guide
Comments Precautions
Ensure that SMM150 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. SMM150 precision integrated circuit requiring certain attention spent with regards component selection printed circuit board layout ensure greatest possible performance. Since SMM150 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 SMM150 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 SMM150 pin. Choose low-leakage ceramic capacitors (e.g., ceramic, XR7) CAPM filter pin, making sure this component located close SMM150 possible. relatively sampling rate SMM150 (500Hz), appear return erroneous readings when connected power supply outputting frequency noise component. This frequency component affects both readings margined voltage levels extent amplitude measured noise. When margining, noise generated supply affect final margined voltage depending relationship amplitude noise when last measurement taken SMM150 complete margining event. obtain more accurate results, external series resistor (R16 schematic) been added between supply voltage, 10µF bypass capacitor (C13 schematic) also added form pass filter. next revision device, external filter (VDD_CAP) will added Npackage allow external supply bypass decoupling internal bus. ceramic capacitor sufficient this purpose.
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SMM150EV 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 2004 SUMMIT Microelectronics, Inc.
trademark Philips Corporation. ©SUMMIT MICROELECTRONICS, Inc., 2004 www.summitmicro.com Drive, Jose, 95131-2312 09/13/04 Phone 408-436-9890 408-436-9897

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