STK672-110-E Sanyo Semiconductor Corporation, STK672-110-E Datasheet

STK672-110-E

Manufacturer Part Number

STK672-110-E

Description

Two-phase Stepping Motor Driver Square Wave Drive Output Current 1.8a

Manufacturer

Sanyo Semiconductor Corporation

Datasheet

1.STK672-110-E.pdf (9 pages)

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• The motor speed can be controlled by the frequency of an external clock signal (the CLOCK pin signal).

• The excitation type is switched according to the state (low or high) of the MODE pin. The mode is set to 2-phase or 1-2

• A motor direction switching pin (the CWB pin) is provided.

• All inputs are schmitt inputs and 40kΩ (typical: –50 to +100%) pull-up resistors are built in.

• The motor current can be set by changing the Vref pin voltage. Since a 0.22Ω current detection resistor is built in, a

• The input frequency range for the clock signal used for motor speed control is 0 to 25kHz.

• Supply voltage ranges: V CC = 10 to 42V, V DD = 5.0V ±5%

• This IC supports motor operating currents of up to 1.8A at Tc = 105°C, and of up to 2.65A at Tc = 25°C.

Ordering number : EN6041A

STK672-110-E

Overview

The STK672-110-E is a unipolar fixed-current chopper type 2-phase stepping motor driver hybrid IC. It features power

MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC

allows the STK672-110-E to control the speed of the motor based on the frequency of an external input clock signal.

It supports two types of excitation for motor control: 2-phase excitation and 1-2 phase excitation. It also provides a function

for switching the motor direction.

Applications

• Two-phase stepping motor drive in send/receive facsimile units

• Paper feed in copiers, industrial robots, and other applications that require 2-phase stepping motor drive

Features

phase excitation on the rising edge of the clock signal.

current of 1A is set for each 0.22V of applied voltage.

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

Thick-Film Hybrid IC

Unipolar Fixed-Current Chopper (Self-Excited PWM)

Scheme and Built-in Phase Signal Distribution IC

Two-Phase Stepping Motor Driver

(Square Wave Drive) Output Current 1.8A

61108HKIM/12799RM (OT) No.6041-1/9

s products or

Related parts for STK672-110-E

STK672-110-E Summary of contents

Page 1

... MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC allows the STK672-110-E to control the speed of the motor based on the frequency of an external input clock signal. It supports two types of excitation for motor control: 2-phase excitation and 1-2 phase excitation. It also provides a function for switching the motor direction ...

Page 2

... Note: A fixed-voltage power supply must be used. Package Dimensions unit:mm (typ) 4168 32.5 8 2.0 0.5 0.4 11 2=22 2.9 STK672-110-E Symbol Conditions V CC max No signal V DD max No signal V IN max Logic input pins 5V, CLOCK ≥ 200Hz I OH max Ear max Pd max With an arbitrarily large heat sink. Per MOSFET ...

Page 3

... Internal Equivalent Circuit Block Diagram STK672-110-E ITF02596 No.6041-3/9 ...

Page 4

... The following circuit (for a lowered current of over 0.2A) is recommended if the application needs to temporarily lower the motor current. Here, a value of close to 100kΩ must be used for resistor RO1 to make the transistor output saturation voltage as low as possible. 5V RO1 Vref RO3 RO2 STK672-110-E STK672-110-E 10μF 10 Two-phase stepping motor + ...

Page 5

... In the sample application circuit, the peak value of the motor current ( set by RO1, RO2, and V DD (5V) as described by the formula below Figure 2 Motor Current I O Flowing into the Driver Vref ÷ Rs Here hybrid IC internal current detection resistor Vref = (R02 ÷ (R01 + R02)) × 5V STK672-110- 0.22Ω STK672-110-E Function At least 20μs At least 10μs 0 ...

Page 6

... Thermal design [Operating range in which a heat sink is not used] The STK672-110-E package has a structure that uses no screws, and is recommended for use without a heat sink. This section discusses the safe operating range when no heat sink is used. In the maximum ratings specifications, Tc max is specified to be 105°C, and when mounted in an actual end product system, the Tc max value must never be exceeded during operation. Tc can be expressed by formula (A) below, and thus the range for Δ ...

Page 7

... Timing Chart 2-phase excitation MODE RESETB CWB CLOCK Gate F1 Gate F2 Gate F3 Gate F4 100% VrefA 100% VrefB 1-2 phase excitation MODE RESETB CWB CLOCK Gate F1 Gate F2 Gate F3 Gate F4 100% VrefA 100% VrefB STK672-110-E ITF02598 ITF02599 No.6041-7/9 ...

Page 8

... MODE RESETB CWB CLOCK Gate F1 Gate F2 Gate F3 Gate F4 100% VrefA 100% VrefB Switching from 2-phase to 1-2 phase excitation MODE RESETB CWB CLOCK Gate F1 Gate F2 Gate F3 Gate F4 100% VrefA 100% VrefB STK672-110-E ITF02600 ITF02601 No.6041-8/9 ...

Page 9

... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2008. Specifications and information herein are subject to change without notice. STK672-110-E Figure =24V =5.0V 11 Clock=500Hz L=1 ...

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