Specification

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[AP1034]

016003455-E-01 - 1 - 2016/06

1. General Description

The AP1034 is driver for bipolar stepper motors. It supports 35V motor power supply and 2.0A constant

current operation. The AP1034 can automatically control Decay setting (slow, fast, pre-fast) in the IC inside

by AKM original "Active Decay Control". The AP1034 can achieve optimal current setting, therefore will

reduce current ripple and bring the motor rotation operation of the high efficiency. The input interface is

clock-in method and supports from 2 Phase (full step) to 2W1-2 Phase (1/8step) excitation. In addition, the

AP1034 is built-in a regulator for control circuit and capable of driving a motor only by motor power supply

voltage (VM), therefore can facilitate design for the application.

It is housed in a small QFN package with good heat dissipation performance, therefore the AP1034 is suitable

for the stepping motor drive in a space-saving and high current.

2. Features

 Built-in PWM current control stepper motor driver

Active Decay Control

 Single Power Supply Operation

Built-in Regulator for control circuit

 Motor Operating Voltage

8.0 ~ 35.0V

 Max Output Current

2.0A



On-Resistance (High+Low)

0.64Ω(typ.) @Ta=25

℃

 Input Interface

Clock-in method



Excitation Mode

2 Phase (Full step)

1-2 Phase (1/2 step)

W1-2 Phase (1/4 step)

2W1-2 Phase (1/8 step)



Selectable PWM chopper frequency

39kHz/77kHz



Spike Noise Blanking Function

Without an external noise filter



Power Saving Function

VM Power Consumption is less than10µA

(Ta=25°C)

 Selectable Motor Rotation Direction

Forward/Reverse

 Corresponding to 3.3V/5V input signal

 Built-in Charge Pump Circuit

 Under Voltage Lockout Circuit(UVLO)

 Thermal Shutdown Circuit (TSD)

 Over Current Protection Circuit (OCP)

 Operating Temperature Range

-30 °C ~ +85°C



Package

AP1034AER: 24-pin QFN (4.0mm

□

)

AP1034AEN: 32-pin QFN (5.0mm

□

)



Pin Compatible Lineups

AP1035AER, AP1035AEN : 1.0A

AP1037AER, AP1037AEN : 1.5A

 Applications

MFP/LBP, Scanner, Robotics

ATM, Vending machines, Ticket machines,

Moneychangers, Point of Sales System (POS) devices

and etc.

Stepper Motor Driver IC equipped with Active Decay Control

AP1034

Summary of content (25 pages)

PAGE 1
[AP1034] AP1034 Stepper Motor Driver IC equipped with Active Decay Control 1. General Description The AP1034 is driver for bipolar stepper motors. It supports 35V motor power supply and 2.0A constant current operation. The AP1034 can automatically control Decay setting (slow, fast, pre-fast) in the IC inside by AKM original "Active Decay Control". The AP1034 can achieve optimal current setting, therefore will reduce current ripple and bring the motor rotation operation of the high efficiency.
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[AP1034] 3. Table of Contents 1. 2. 3. 4. 5. 6. General Description ........................................................................................................................................... 1 Features .............................................................................................................................................................. 1 Table of Contents ................................................................................................................
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[AP1034] 4. Block Diagram CHL CH CL VM NC VG Imt.VDC Regulator VDC UVLO(VM) CVDC OSC VM Charge Pump High-Side Gate Drive Low-Side Gate Drive Blank Time CVG VM VM1 & PWM Control TSD OCP Active Decay Control OUT1A STEP DIR OUT1B RESETB RESET_B M Transltor MODE1 IS1 MODE2 H-Bridge 1 FS MCU RR1 Control Logic VREF 1／8 RIS1 VM Pre Driver VM2 DAC RR2 IS1 CMP 1 IS2 CMP 2 OUT2A OUT2B ENABLE_B ENABLEB IS2 SLEEP_B SLEEPB H-Bridge 2 RIS2 Exposed Pad GND Figure 1.
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[AP1034] 6.
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[AP1034]  Functions Pin Number 24QFN 32QFN 1 1 Pin Name I/O OUT2B O ENABLEB I 2 5 GND CL CH VG P I I O 3,16 4 5 6 6,19 7 8 9 VDC O 7 10 MODE1 I 8 11 MODE2 I 9 12 RESETB I 10 13 FS I 11 14 SLEEPB I 12 15 STEP I 14 17 VREF I 15 18 DIR I 17 20 OUT1B O 18 24 VM1 P 19 22 IS1 OUT1A OUT2A IS2 I O O I 20 21 22 23 25 27 30 32 VM2 P 24 3 13 2,4,16,2 1,23,26, 28,29,31 NC - Function H-bridge 2 Output Terminal Output Enable Terminal Please refer to S
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[AP1034] 7. Absolute Maximum Ratings Parameter Motor Power Supply Voltage Digital Input/Output Terminal Voltage (STEP, DIR, RESETB, MODE1, MODE2, ENABLEB, SLEEPB, FS) VM Level Terminal Voltage (OUT1A,OUT1B, OUT2A,OUT2B) Symbol min max Unit VM -0.5 35 V Vterm1 -0.5 5.5 V Vterm2 -0.5 VM V Condition The Min value must not VM VM V -0.5 +5.5 exceed -0.5V. VDC -0.4 5.5 V VDC Terminal Voltage VREF Input Voltage VREF -0.5 VDC V VCL -0.5 VDC V CL Terminal Voltage ISn -0.5 1.
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[AP1034] 8. Recommended Operating Conditions Parameter Symbol min typ max Unit Note Motor Power Supply Voltage VM 8.0 24.0 35.0 V Maximum Output Current Iload 2.0 A (Note 6) (Continuous) Reference Voltage of VREF 0.0 3.6 V Iload(100%)[A]=(VREF/8)/RISn PWM Constant Current Control Operating Temperature Range Ta -30 85 °C Note 6. Please have a thermal design so as not exceed Tj = 150 degrees and Power Dissipation. Note 7. All voltages are with respect defined to GND (Exposed-Pad). 9.
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[AP1034] Parameter (Ta = 25°C, VM=24V, unless otherwise specified.) Condition min typ max Unit Symbol Current Operation Blanking Time PWM Chopper Frequency Output Current Accuracy tB FS=”L” 1.3 2.6 5.2 µs fCP1 FS=”L” 20 39 60 kHz fCP2 FS=”H” 40 77 120 kHz VREF=2V, %IloadMAX=38% -15 - ±15 % VREF=2V, %IloadMAX=71% -5 - ±5 % VREF=2V, %IloadMAX=100% -5 - ±5 % errIload Protection Circuit Overcurrent protection trip level IOCPTRIP 2.5 5.0 7.
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[AP1034] 10. Functional Descriptions 10.1 Input and Output of Terminal  Truth Table Table 1. Output state against SLEEPB and ENABLEB settings OUT1A OUT1B SLEEPB ENABLEB Condition OUT2A OUT2B Output OFF Output OFF Sleep mode L X (Hi-Z) (Hi-Z) Internal control circuit : OFF Output OFF Output OFF Disable mode H H (Hi-Z) (Hi-Z) Internal control circuit : ON Enable mode H L Output On Output On DIR=”H” : CW DIR=”L” : CCW Note 10.
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[AP1034] Max3.0ms STEP STEP IOUT1 0% IOUT2 0% IOUT1 0% IOUT2 0% SLEEPB ENABLEB ENABLEB RESETB Figure 4. ENABLEB signal Timing Chart (W1-2 phase) Figure 5. Sleep Mode Cancel Timing Chart (W1-2 phase)  MODE1,MODE2 : Motor Excitation Mode Setting Terminal The MODE1 and MODE2 terminals are used to configure stepping format as shown below. Table 4.
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[AP1034]  DIR : Motor Rotation Direction Setting Terminal This pin sets the direction of motor rotation. When changing the direction, a new setting is reflected on a rising edge of the CLK pin. Refer to Figure 6. ・CCW : H-bridge2 current is output by shifting 90deree ahead against the H-bridge1 current. ・CW : H-bridge2 current is output by shifting 90degree behind against the H-bridge1 current. Table 6.
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[AP1034]  FS : PWM Chopper Frequency Select Terminal By inputting “H” to the FS input, it is possible to drive the PWM chopper frequency in 77kHz (typ). By inputting “L” or connecting GND, PWM chopper frequency becomes 39kHz (typ). Please decide the setting of the FS input “50us” before than the ENABLEB input is set to "L". Table 8. Settings of PWM chopper frequency select terminal FS Condition L fCP=39kHz(typ) H fCP=77kHz(typ) 10.
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[AP1034]  Active Decay Mode Current Waveform The AP1034 selects the decay mode automatically for better current follower performance. Usually, it operates in slow decay mode but changes to fast decay mode when switching the step during current decreasing period. Also There is Pre fast decay mode before Charge mode. Therefore if in the low target current, it is possible to reduce the current distortion.
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[AP1034] 10.3 Micro-Step Function  Step Sequence Table 9. Setting Current Comparison of Excitation Modes 2 phase (Full step) 1-2 phase (1/2step) W1-2 phase (1/4step) 1 1 2W1-2 phase (1/8step) Phase1 Current [%Iloadmax] 100 98 92 83 71 56 38 20 0 -20 -38 -56 -71 -83 -92 -98 -100 -98 -92 -83 -71 -56 -38 -20 0 20 38 56 71 83 92 98 Phase2 Current [%Iloadmax] 0 20 38 56 71 83 92 98 100 98 92 83 71 56 38 20 0 -20 -38 -56 -71 -83 -92 -98 -100 -98 -92 -83 -71 -56 -38 -20 Step Angle [°] 1 0.00 2 11.
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[AP1034]  Example of Current Waveforms in Each Excitation Mode STEP STEP +100% +100% +71% +71% IOUT1A 0% IOUT1A 0% -71% -71% -100% -100% +100% +100% +71% +71% IOUT2A 0% IOUT2A 0% -71% -71% -100% -100% : Home position : Home position 2 phase (CW mode：DIR=”H”) 1-2 phase (CW mode：DIR=”H”) STEP +100% +92% +71% +38% IOUT1A 0% -38% -71% -92% -100% +100% +92% +71% +38% IOUT2A 0% -38% -71% -92% -100% : Home position W1-2 phase (CW mode：DIR=”H”) 016003455-E-01 - 15 - 2016/06
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[AP1034] STEP 100% 98% 92% 83% 71% 56% 38% 20% IOUT1A 0% -38% -71% -100% 100% 98% 92% 83% 71% 56% 38% 20% IOUT2A 0% -38% -71% -100% Home position 2W1-2 phase (CW mode：DIR=”H”) Note 12. “+” means the current is flowing through the OUT1B from OUT1A and the OUT2B from OUT2A.
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[AP1034] 10.4 Protection Functions Table 11. Recovery type and the output state of the protection circuit Protection Circuit H-Bridge Outputs Thermal Shutdown (TSD) Hi-Z Under Voltage Lockout (UVLO) Hi-Z Shorted-Load Over Current Protection Shorted-to-Ground Hi-Z (OCP) Shorted-to-Power Recovery type Automatic Automatic Latch off  Thermal Shutdown Circuit (TSD) If the internal temperature of the IC (Tj) reaches 175 °C (typ), the H-Bridge outputs Hi-Z.
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[AP1034]  Over Current Protection Circuit (OCP) The IC has over current protection circuit to prevent breakdown of H-Bridge drivers. If the specified current flows, H-Bridge outputs of all channel becomes latch off. It recovers by re-input of the motor power supply voltage (VM) or input of SLEEPB or RESETB. IOCPTRIP IOUT tOCPDET VOUT ON tOCPDET OFF(HI-Z) OFF(HI-Z) VM SLEEPB or RESETB Figure 13. OCP Timing Chart Note13.
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[AP1034] 11. Recommended External Circuit  Recommended External Circuit VM CVM CVM1 VDC CVDC CVG CVM2 VM1 VM2 CHL VG CH CL OUT1A OUT1B M AP1034 RR1 VREF OUT2A RR2 OUT2B IS1 RIS1 IS2 RIS2 GND FS Exposed Pad MODE1 ENABLE_B MODE2 STEP DIR RESET_B SLEEP_B MCU Figure 14. Recommended External Circuit Table 12. Recommended External Components Items typ Unit Remark CVM 100 Electrolytic Capacitor µF CVM1 0.22 Ceramic Capacitor µF CVM2 0.22 Ceramic Capacitor µF CHL 0.
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[AP1034]  Recommended Layout Top View Bottom View Figure 15. Recommended Layout Pattern Note 18. Please layout the large ground plane on the PCB. Note 19. Exposed Pad (heat sink) is common to the ground terminal. Please connect it to the ground of the PCB. Note 20. The ground via of the PCB back side under IC mounted area is effective for heat radiation to each layer of the PCB.
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[AP1034] 12.
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[AP1034]  Recommended Land Pattern  AP1034AER ： 24-pin QFN Package 4.6 3.0 0.22±0.05 2.6 3.0 4.6 2.6 φ0.3 Thermal Via 0.2 【unit：mm】  AP1034AEN： 32-pin QFN Package 【unit: mm】 *The most suitable dimensions of the mount pad change by a substrate material, solder paste materials, a soldering method, device precision. It is therefore recommended that customers contact the actual design should be optimized according to the situation.
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[AP1034]  Marking  AP1034AER 1034AR (2) YWWAA (3) (1) (4) (5) (1) (2) (3) (4) (5) 1pin Indication Market No. Year code (last 1 digit) Week code Management code (1) (2) (3) (4) (5) 1pin Indication Market No.
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[AP1034] 13. Revise History Date (YY/MM/DD) 16/04/20 16/06/28 Revision Page Contents 00 12 01 18 First Edition : Figure8 In addition, please do not make chattering noise for SLEEPB or RESETB signal because it causes the malfunction of the OCP circuit and may let an IC damage. : Table 13.
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[AP1034] IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products.