Diodes AM4964 Instrukcja Użytkownika Pobierz pdf

AM4964

Document number: DS37241 Rev. 2 - 2

1 of 21

www.diodes.com

June 2014

AM4964

A Product Line of

Diodes Incorporated

NEW PROD UCT

SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER

Description

The AM4964 is highly integrated feature rich single phase Brushless

Direct Current (BLDC) full wave motor driver with combined PWM and

temperature speed control function for fans, blowers and extractors.

For system flexibility, the motor speed can be controlled by an

external PWM signal and temperature sensed by Thermal resister at

the same time. Based on external input PWM and temperature

signals, the AM4964 adjusts the output PWM duty cycle. If the input

PWM duty is constant, the output PWM duty varies with temperature

sensed by Thermal resister sensor between the low and high

temperature corners. If the temperature signal is constant, the output

duty varies with the external input PWM duty. The low and high

temperature corners and the output PWM duty gap between these

temperature corners are adjustable

To help protect the motor coil, the AM4964 provides a rotor lock

protection which shuts down the output if rotor lock is detected. The

device automatically re-starts when the rotor lock is removed.

AM4964 provides a tachometer output Frequency Generator

(FG). The FG output is the magnetic change frequency.

The AM4964 is available in TSSOP-20EP package.

Features

 Flexible Speed Control Options

 Combined PWM+Thermistor Speed Control

 PWM Speed Control

 DC Voltage Speed Control

 Adjustable Low and High Temperature Corners

 Full Speed When Thermal Resistor is Shorted

 Adjustable Output Duty Gap between High and Low

Temperature when 100% PWM Input

 Built-in oscillator  No external capacitor

 Built-in Minimal Speed Setup Circuit

 Alpha Slope Adjustable

 Rotation Speed Indicator (FG)

 Built-in Temperature Control Circuit

 Built-in Thermal Shutdown Circuit

 Lock Protection and Auto-restart

 Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

PGND

OUT2

VCC

VMIN

PWM

IN+

IN-

RADJ

SGND

OUT1

EXPOSED PAD

TSSOP-20EP

Applications

 CPU Cooler Fan in PC

 Brushless DC Motor Driver

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html ogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-

<1000ppm antimony compounds.

1 2 3 4 5 6 ... 20 21

Podsumowanie treści

Strona 1 - TSSOP-20EP

AM4964 Document number: DS37241 Rev. 2 - 2 1 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 2

AM4964 Document number: DS37241 Rev. 2 - 2 10 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 3 - Diodes Incorporated

AM4964 Document number: DS37241 Rev. 2 - 2 11 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 4

AM4964 Document number: DS37241 Rev. 2 - 2 12 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 5

AM4964 Document number: DS37241 Rev. 2 - 2 13 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 6

AM4964 Document number: DS37241 Rev. 2 - 2 14 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 7 - Functional Descriptions

AM4964 Document number: DS37241 Rev. 2 - 2 15 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 8

AM4964 Document number: DS37241 Rev. 2 - 2 16 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 9

AM4964 Document number: DS37241 Rev. 2 - 2 17 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 10 - NEW PROD UCT

AM4964 Document number: DS37241 Rev. 2 - 2 18 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 11

AM4964 Document number: DS37241 Rev. 2 - 2 19 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 12 - June 2014

AM4964 Document number: DS37241 Rev. 2 - 2 2 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 13 - Applications Note

AM4964 Document number: DS37241 Rev. 2 - 2 20 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 14 - Temperature (

AM4964 Document number: DS37241 Rev. 2 - 2 21 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated

Strona 15 - Applications Note (cont.)

AM4964 Document number: DS37241 Rev. 2 - 2 3 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 16 - PWM Variable

AM4964 Document number: DS37241 Rev. 2 - 2 4 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 17 - Status Output - FG Output

AM4964 Document number: DS37241 Rev. 2 - 2 5 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 18 -

AM4964 Document number: DS37241 Rev. 2 - 2 6 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

AM4964 Document number: DS37241 Rev. 2 - 2 7 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 20

AM4964 Document number: DS37241 Rev. 2 - 2 8 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Strona 21

AM4964 Document number: DS37241 Rev. 2 - 2 9 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated N

Komentarze do niniejszej Instrukcji

Brak uwag

Diodes AM4964 Instrukcja Użytkownika

Przeglądaj online lub pobierz Instrukcja Użytkownika dla Sprzęt komputerowy Diodes AM4964. Diodes AM4964 User Manual Instrukcja obsługi

Podsumowanie treści

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Sprzęt komputerowy Diodes AM4964