TC647VPA Microchip Technology, TC647VPA Datasheet
TC647VPA
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TC647VPA Summary of contents
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... A logic low applied to V (Pin 3) causes fan shutdown. The TC647 also features Microchip Technology's pro- prietary FanSense™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE (Pin 5). A missing pulse detector monitors this pin during fan operation ...
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... TC647 Functional Block Diagram MIN V SHDN TC647 GND DS21447C-page 2 – + SHDN – + Control Logic PWM Timer Clock Generator Start-up Timer + – Missing Pulse Detect. + – 10k 70mV (typ OUT FAULT SENSE 2002 Microchip Technology Inc. ...
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... Diagnostic Timer DIAG Note 1: Ensured by design, not tested. 2002 Microchip Technology Inc. *Stresses above those listed under "Absolute Maximum Rat- ings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied ...
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... FET. This output has asymmetrical drive (see Section 1.0, “Electrical Characteristics”). 2.8 Power Supply Input (V V may be independent of the fan’s power supply DD (see Section 1.0, “Electrical Characteristics”). ) MIN input MIN MIN V . See MIN REL if a hard shutdown is desired. ) OUT ) DD 2002 Microchip Technology Inc. ...
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... REL include this hysteresis plus adequate margin to account for normal variations in the absolute value of the threshold and hysteresis. 2002 Microchip Technology Inc. CAUTION: Shutdown mode is unconditional. That is, the fan will not be activated regardless of the voltage The fan should not be shut down until all heat ...
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... TC647 down if multiple fault pulses are detected at approximately one second intervals 1µ FAULT TC647 3 V OUT 3 V MIN C B SENSE 0.01 µ GND 1 µ +12V 1 kΩ TC647 RESET Fan Fault Detected R BASE SENSE R SENSE 2002 Microchip Technology Inc. ...
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... Quit Normal Operation and go to Fan Fault. (9) End. 2002 Microchip Technology Inc. 4.3 Fan Fault Fan Fault is an infinite loop wherein the TC647 is latched in shutdown mode. This mode can only be released by a reset (i ...
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... Yes No Fan Pulse Detected? M.P.D. Expired? No Yes No Cycling Power? Yes Yes Shutdown OUT No V > V MIN REL Yes Power-up Yes Fire Diagnostic Timer (100msec) No Fire Start-up Fan Pulse Timer Detected? (1 SEC) Yes Fan Pulse Detected? No Fan Fault 2002 Microchip Technology Inc. ...
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... Shutdown (Optional) Note: *See cautions regarding latch-up considerations in Section 5.0, "Typical Applications". FIGURE 5-1: Typical Application Circuit. 2002 Microchip Technology Inc. The TC642 demonstration and prototyping board (TC642DEMO) (TC642EV) provide working examples of TC647 cir- cuits and prototyping aids. The TC642DEMO is a printed circuit board optimized for small size and ease of inclusion into system prototypes ...
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... TEMP 2 2 are the chosen temperatures and 2 and R . More information about 1 2 sets the minimum PWM duty MIN Minimum Speed x (1.4V) + 1.25V Full Speed 1000 x (1.4V) + 1.25V = 1.81V 2500 , of DIV = 5.0V then; 5.0V – therefore 5. 50,000 = – 2002 Microchip Technology Inc. ...
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... These can only occur when the fan is ener- SENSE gized (i.e “on”). At very low duty cycles, the OUT 2002 Microchip Technology Inc. V output is “off” most of the time. The fan may be OUT rotating normally, but the commutation events are occurring during the PWM’s off-time. ...
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... A base-current limiting resistor is required with bipolar 1.2 transistors. This is shown in Figure 5-6. 1.0 in Figures 3-1, 5-1, 5-4, 5-6, 5-7, 5-8 1 pin has a minimum source current OUT (BR)CEO voltage must be high enough to suf- OUT 2002 Microchip Technology Inc. or ...
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... TO-92 MPS6602 TO-92 SI2302 SOT-23 MGSF1N02E SOT-23 SI4410 SO-8 SI2308 SOT-23 Note 1: A series gate resistor may be used in order to control the MOSFET turn-on and turn-off times. 2002 Microchip Technology Inc. The correct value for this resistor can be determined follows SENSE V R BASE ...
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... V DD Fan OUT R SENSE GND C) N-Channel MOSFET and V inputs may cause IN MIN , which is usually driven from a IN input should be bypassed with a 1 µF and R based on using an NTC (25°C) MIN (45°C) (see Figure 5-9). MAX = 1.8V. MIN and 2002 Microchip Technology Inc. ...
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... An open-drain output from the processor I/O can be used to reset the TC647 following detection of a fault condition. The FAULT output can be connected to the processor's interrupt input I/O pin, for polled operation (see Figure 5-10). 2002 Microchip Technology Inc. +5V + NTC µ ...
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... Data from one or more Sensors I/O3 CMOS Microcontroller GND INT FIGURE 5-10: TC647 as a Microcontroller Peripheral. DS21447C-page 16 (Optional) (RESET (MSB) 110 240 k . 360 (LSB 1 + GND 1 k +12V +5V Fan 800 OUT 2N2222A +5V TC647 FAULT MIN 0 SENSE R 11 2.2 2002 Microchip Technology Inc. ...
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... Standard marking consists of Microchip part number, year code, week code, traceability code (facility code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. 2002 Microchip Technology Inc. TC647 Example: TC647VPA 025 0215 Example: TC647VOA 0215 ...
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... MILLIMETERS MIN NOM MAX 8 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 9.14 9.46 9.78 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. 2002 Microchip Technology Inc. ...
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... Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 2002 Microchip Technology Inc ...
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... B .010 .012 .016 MILLIMETERS* MIN NOM MAX 8 0.65 1.18 0.76 0.86 0.97 0.05 0.15 4.90 .5.08 4.67 2.90 3.00 3.10 2.90 3.00 3.10 0.40 0.55 0.70 0.90 0.95 1. 0.10 0.15 0.20 0.25 0.30 0. 2002 Microchip Technology Inc. ...
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... Component Taping Orientation for 8-Pin MSOP Devices PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) 8-Pin MSOP 2002 Microchip Technology Inc. User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device Pitch (P) Part Per Full Reel ...
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... TC647 NOTES: DS21447C-page 22 2002 Microchip Technology Inc. ...
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... Microchip Products • Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. SYSTEMS INFORMATION AND UPGRADE HOT LINE The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products ...
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... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21447C-page24 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21447C 2002 Microchip Technology Inc. ...
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... Examples: a) TC647VOA: PWM Fan Speed Controller w/ Fault Detection, SOIC package. b) TC647VUA: PWM Fan Speed Controller w/ Fault Detection, MSOP package. c) TC647VPA: PWM Fan Speed Controller w/ Fault Detection, PDIP package. d) TC647EOATR: PWM Fan Speed Controller w/Fault Detection, SOIC package, Tape and Reel. DS21447C-page25 ...
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... TC647 NOTES: DS21447C-page 26 2002 Microchip Technology Inc. ...
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... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...
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... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...