MTD6502B-L MICROCHIP [Microchip Technology], MTD6502B-L Datasheet

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MTD6502B-L

Manufacturer Part Number
MTD6502B-L
Description
5V 3-Phase BLDC Sinusoidal Sensorless Fan Motor Driver
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.MTD6502B-L.pdf (20 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MTD6502B-LC1-01
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MTD6502B-LC1-02
Manufacturer:
MICROCHIP
Quantity:
12 000
Features:
• Position Sensorless BLDC Drivers
• 180° Sinusoidal Drive, for High Efficiency and Low
• Support 2V to 5.5V Power Supplies
• Direction Control:
• Speed Control through Power Supply Modulation
• Built-in Frequency Generator (FG Output Signal)
• Built-in Lock-up Protection and Automatic
• Built-in Over Current Limitation
• Built-in Thermal Shutdown Protection
• No External Tuning Required
• Available Packages:
Applications:
• Notebook CPU Cooling Fans
• 5V 3-Phase Brushless DC Motors
 2011 Microchip Technology Inc.
(No Hall Sensor Required)
Acoustic Noise
- Forward direction: connect DIR pin to GND or
- Reverse direction: connect DIR pin to V
(PSM) and/or Pulse-Width Modulation (PWM)
Recovery Circuit (External Capacitor not
Necessary)
- 3 mm x 3 mm TDFN-10
leave floating
5V 3-Phase BLDC Sinusoidal Sensorless Fan Motor Driver
DD
Description:
The MTD6502B device is a 3-phase full-wave driver for
brushless sensorless DC motors. It features 180°
sinusoidal drive, high torque output and silent drive.
With adaptive features, parameters and a wide range
of power-supplies (2V to 5.5V), the MTD6502B device
is intended to cover a wide range of motor
characteristics, while requiring minimum external com-
ponents. Speed control can be achieved through either
power supply modulation or pulse-width modulation
(using the PWM digital input pin).
With the compact packaging and minimum bill-of-
material (integrated power transistors, no Hall sensor,
no external tuning), the MTD6502B is best suited for
low-cost fan applications requiring high efficiency and
low acoustic noise, such as notebook CPU cooling
fans. Frequency generator (FG) output enables the
precision speed control in closed-loop applications.
The MTD6502B driver includes a lock-up protection
mode, which turns off the output current when the
motor is under lock condition, and an automatic recov-
ery that enables the fan to run when the lock condition
is removed. The motor overcurrent limitation and ther-
mal-shutdown protection are included for safety-
enhanced operations.
The MTD6502B is available in a compact thermally-
enhanced 3 mm x 3 mm TDFN package.
Package Types
* Includes Exposed Thermal Pad (EP); see
MTD6502B
OUT1
OUT2
GND
V
FG
DD
1
2
3
4
5
MTD6502B
3x3 TDFN*
EP
11
10
9
8
7
6
PWM
DIR
V
OUT3
GND
CC
DS25003A-page 1
Table
2-1.

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MTD6502B-L Summary of contents

Page 1

... Brushless DC Motors  2011 Microchip Technology Inc. MTD6502B Description: The MTD6502B device is a 3-phase full-wave driver for brushless sensorless DC motors. It features 180° sinusoidal drive, high torque output and silent drive. With adaptive features, parameters and a wide range of power-supplies (2V to 5.5V), the MTD6502B device ...

Page 2

... MTD6502B Functional Block Diagram REF V Regulator PWM Controller DIR Thermal protection DS25003A-page 2 Motor Phase Detection Circuit Over-current protection Short-circuit protection V CC OUT3 OUT2 OUT1 GND  2011 Microchip Technology Inc. ...

Page 3

... PWM GND DIR OUT1 OUT3 4 7 OUT2 GND 5 6 Type/Value 1 µF Connect as close as possible to IC input pins 1 µF Connect as close as possible to IC input pins 10 kΩ Connect to Vlogic on microcontroller side MTD6502B Comment DS25003A-page 3 ...

Page 4

... MTD6502B NOTES: DS25003A-page 4  2011 Microchip Technology Inc. ...

Page 5

... OL_FG I — — 10 LH_FG T — 0.5 — RUN T 4.5 5 5.5 WAIT — 750 — T — 170 — SD — 25 — SD_HYS MTD6502B is also internally limited, according OUT Electrical Charac- = +25°C A Units Conditions V µA PWM = Ω 0.5A OUT CC Ω 0.5A OUT CC Ω 0.5A ...

Page 6

... MTD6502B TEMPERATURE SPECIFICATIONS Electrical Specifications: Unless otherwise specified, all limits are established for V Parameters Temperature Ranges Operating Temperature Storage Temperature Range Thermal Package Resistances Thermal Resistance, 10L-TDFN DS25003A-page 6 Sym Min Typ Max T -40 — +125 OPR T -55 — +150 STG  ...

Page 7

... PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 2-1: MTD6502B PIN FUNCTION TABLE MTD6502B Type Name 3x3 TDFN — GND 3 — OUT1 5 O OUT2 7 O OUT3 8 — DIR 10 I PWM 11 — EP Legend Input Output  2011 Microchip Technology Inc. ...

Page 8

... MTD6502B NOTES: DS25003A-page 8  2011 Microchip Technology Inc. ...

Page 9

... FUNCTIONAL DESCRIPTION The MTD6502B generates a full-wave signal to drive a 3-phase sensorless BLDC motor. High efficiency and low-power consumption are achieved due to the CMOS transistors and synchronous rectification drive type. 3.1 Speed Control The rotational speed of the motor can be controlled either through the PWM digital input signal acting directly on the power supply (V ) ...

Page 10

... Km and its measurement criteria among different motor manufacturers. In order to work with various motor applications, the MTD6502B offers various options to adopt a wide range of BEMF coefficient. The BEMF coefficient (Km) is defined as the peak value of the phase-to-phase BEMF voltage, normalized to the electrical speed of the motor ...

Page 11

... PACKAGING INFORMATION 4.1 Package Marking Information 10-Lead TDFN (3x3x0.9 mm) XXXX YYWW NNN PIN 1 MTD6502B-LC1-00 MTD6502B-LC1-01 MTD6502B-LC1-02 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 ...

Page 12

... MTD6502B Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25003A-page 12  2011 Microchip Technology Inc. ...

Page 13

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2011 Microchip Technology Inc. MTD6502B DS25003A-page 13 ...

Page 14

... MTD6502B NOTES: DS25003A-page 14  2011 Microchip Technology Inc. ...

Page 15

... APPENDIX A: REVISION HISTORY Revision A (March 2011) • Original Release of this Document.  2011 Microchip Technology Inc. MTD6502B DS25003A-page 15 ...

Page 16

... MTD6502B NOTES: DS25003A-page 16  2011 Microchip Technology Inc. ...

Page 17

... Km Range Value:  2011 Microchip Technology Inc. -XX Examples: Km Range a) MTD6502B-LC1-00 Value b) MTD6502B-LC1-01 c) MTD6502B-LC1-02 MTD6502B . Tape and Reel, 10LD TDFN Pkg, Km Range Value = 0 Tape and Reel, 10LD TDFN Pkg, Km Range Value = 1 Tape and Reel, 10LD TDFN Pkg, Km Range Value = 2 DS25003A-page 17 ...

Page 18

... MTD6502B NOTES: DS25003A-page 18  2011 Microchip Technology Inc. ...

Page 19

... PIC ® MCUs and dsPIC devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. MTD6502B logo, MPLAB, PIC, PICmicro, PICSTART, ® DSCs ® ...

Page 20

Worldwide Sales and Service AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://www.microchip.com/ ...

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