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MTD6501G Datasheet

Download or read online Microchip Technology MTD6501G 3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver pdf datasheet.



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3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver
Features
• Position Sensorless BLDC Drivers (No Hall
Sensor Required)
• 180° Sinusoidal Drive, for High Efficiency and Low
Acoustic Noise
• Support 2V to 14V Power Supplies
• Speed Control Through PAM and/or PWM
• Built-in Frequency Generator (FG Output Signal)
• Built-in Lock-up Protection and Automatic
Recovery Circuit (External Capacitor not
Necessary)
• Built-in Over Current Limitation and Short Circuit
Protection
• Built-in Thermal Shutdown Protection
• Thermally Enhanced SOP-8 Package for
MTD6501C and MTD6501G (Maximum Output
Current – 800 mA);
• MSOP-10L Package for MTD6501D (Maximum
Output Current – 500 mA)
• 20 kHz PWM Output Frequency for MTD6501C/D
and 23 kHz for MTD6501G
• Boost Mode (Optional Back Electromotive Force
(BEMF) Pre-amplification in MTD6501D)
• No External Tuning Required
The MTD6501C/D/G devices are formerly products of
Advanced Silicon.
 2010-2012 Microchip Technology Inc.
MTD6501C/D/G
Description
The MTD6501C/D/G devices are 3-phase, full-wave
drivers for brushless sensorless DC motors. They
feature 180° sinusoidal drive, high torque output, and
silent drive. Due to their adaptive features and wide
power-supply range capabilities (2V to 14V), they are
intended to cover a wide range of motor characteristics,
while requiring no external tuning from the user. Speed
control can be achieved through either power supply
modulation or pulse-width modulation (using the PWM
digital input pin).
Due to the compact packaging and minimum bill of
materials (power transistors incorporated, no Hall
sensor, no external tuning), they are best suited for low-
cost fan applications requiring high efficiency and low
acoustic noise, such as CPU cooling fans. Frequency
generator output enables precision speed control in
closed-loop applications. The MTD6501C/D/G drivers
include a Lock-up Protection mode, which turns off the
output current when the motor is under lock condition,
and an automatic recovery that enables the fan to run
when the lock condition is removed. Motor overcurrent
limitation,
short-circuit
shutdown protection are also included.
The MTD6501C and the MTD6501G are available in a
compact thermally-enhanced SOP-8 package, while
the MTD6501D is available in the MSOP-10L package.
Package Types
MTD6501C, MTD6501G
SOP-8
FG
1
2
V
DD
OUT1
3
OUT2
4
MTD6501D
MSOP
FG
1
GND
2
V
3
DD
OUT1
4
OUT2 5
protection
and
thermal-
PWM
8
V
7
CC
OUT3
6
GND
5
PWM
10
BOOST
9
V
8
CC
OUT3
7
6 GND
DS22263B-page 1

Summary of Contents

Page 1

... Motor overcurrent limitation, short-circuit shutdown protection are also included. The MTD6501C and the MTD6501G are available in a compact thermally-enhanced SOP-8 package, while the MTD6501D is available in the MSOP-10L package. Package Types MTD6501C, MTD6501G ...

Page 2

... MTD6501C/D/G Functional Block Diagram REF Regulator Timing Controller V DD PWM PWM Input Thermal protection DS22263B-page 2 BOOST MTD6501D Only Motor Phase Detection Circuit Overcurrent protection Short-circuit protection 2010-2012 Microchip Technology Inc OUT3 OUT2 OUT1 GND ...

Page 3

... Typical Application Fan Motor Driver Using the MTD6501C or MTD6501G V logic (controller side Recommended External Components for Typical Application Element Type/Value 2010-2012 Microchip Technology Inc. PWM input (0.02-100 kHz) FG PWM OUT1 ...

Page 4

... GND BOOST VCC OUT1 OUT3 5 6 OUT2 GND Comment >1 µF Connect as close as possible to IC input pins >1 µF Connect as close as possible to IC input pins >10 k Connect to Vlogic on controller side Tie to GND for BOOST mode C 2 2010-2012 Microchip Technology Inc. ...

Page 5

... Note 1: Reference PCB, according to JEDEC standard EIA/JESD 51-9. 2: Derating applies for ambient temperatures outside the specified operating range (refer to 3: OUT1, OUT2, OUT3 (Continuous, 100% duty cycle). 4: MTD6501C and MTD6501G 5: MTD6501D Min. Typ. Max. Units 2 14 — ...

Page 6

... Operating Temperature Storage Temperature Range 1.2 SOP-8 1 0.8 0.6 MSOP-10 0.4 0.2 0 FIGURE 1-1: Allowable Power Dissipation (P DS22263B-page 6 Sym. Min. Typ. Max. T -30 95 OPR T -55 150 STG T (° Function of Ambient Temperature (T D_MAX 5.0V 25° Units Conditions °C ° 2010-2012 Microchip Technology Inc. ...

Page 7

... PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 2-1: MTD6501C/D/G PIN FUNCTION TABLE MTD6501C, MTD6501D MTD6501G SOP-8 MSOP N/A 9 Legend Input Output Power 2010-2012 Microchip Technology Inc. MTD6501C/D/G Table 2-1. Type Symbol O FG ...

Page 8

... MTD6501C/D/G NOTES: DS22263B-page 8 2010-2012 Microchip Technology Inc. ...

Page 9

... Hz to 100 kHz), while the output transistor activation always occurs at a fixed rate, which is outside of the range of audible frequencies. The MTD6501C and MTD6501D typical output frequency is 20 kHz. The MTD6501G output frequency is 23 kHz. 3.2 Frequency Generator Function The Frequency Generator output is a Hall-sensor equivalent” ...

Page 10

... GND activates Boost mode (active low feature, internal pull-up). TABLE 3-1: POSSIBLE MODES OF OPERATION BASED ON THE BOOST PIN CONNECTION BOOST Pin Mode of Operation Floating Normal Tied to GND Boost DS22263B-page 10 CC 2010-2012 Microchip Technology Inc. ...

Page 11

... PACKAGING INFORMATION 4.1 Package Marking Information 8-Lead SOP (3.90 mm) (MTD6501C, MTD6501G) 10-Lead MSOP (MTD6501D) Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week 01) NNN Alphanumeric traceability code e Pb-free JEDEC designator for Matte Tin (Sn) ...

Page 12

... MTD6501C/D/G DS22263B-page 12 2010-2012 Microchip Technology Inc. ...

Page 13

... Microchip Technology Inc. MTD6501C/D/G DS22263B-page 13 ...

Page 14

... MTD6501C/D/G DS22263B-page 14 2010-2012 Microchip Technology Inc. ...

Page 15

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2010-2012 Microchip Technology Inc. MTD6501C/D/G DS22263B-page 15 ...

Page 16

... MTD6501C/D/G Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22263B-page 16 2010-2012 Microchip Technology Inc. ...

Page 17

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2010-2012 Microchip Technology Inc. MTD6501C/D/G DS22263B-page 17 ...

Page 18

... MTD6501C/D/G NOTES: DS22263B-page 18 2010-2012 Microchip Technology Inc. ...

Page 19

... APPENDIX A: REVISION HISTORY Revision B (May 2012) The following is the list of modifications: 1. Added the MTD6501G device to the family and related information throughout the document. 2. Updated the Temperature Specifications table. 3. Sorted the information in Table 2-1. 4. Corrected Frequency Generator output to open Section 3.2 Frequency Generator drain in Function” ...

Page 20

... MTD6501C/D/G NOTES: DS22263B-page 20 2010-2012 Microchip Technology Inc. ...

Page 21

... Microchip Technology Inc. MTD6501C/D/G . Examples: a) MTD6501C-HC1 Tube, 8LD SOP Package b) MTD6501C-LC1 Tape and Reel, 8LD SOP Package c) MTD6501D-HC1 Tube, 10LD MSOP Package d) MTD6501D-LC1 Tape and Reel, 10LD MSOP Package e) MTD6501G-HC1 Tube, 8LD SOP Package f) MTD6501G-LC1 Tape and Reel, 8LD SOP Package DS22263B-page 21 ...

Page 22

... MTD6501C/D/G NOTES: DS22263B-page 22 2010-2012 Microchip Technology Inc. ...

Page 23

... Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2010-2012, Microchip Technology Incorporated, Printed in the U ...

Page 24

... Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2010-2012 Microchip Technology Inc. 11/29/11 ...

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