TCA3727G 2-phase Stepper Motor Driver Bipolar Automotive Pow

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TCA3727G 2-phase Stepper Motor Driver Bipolar Automotive Pow

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Data Sheet, Rev. 2.2, January 2008
TCA3727G
2-phase Stepper Motor Driver Bipolar
Automotive Power
2-phase Stepper Motor Driver Bipolar
TCA3727G
Features 0.75 amp. outputs Integrated driver, control logic current control (chopper) Fast free-wheeling diodes Max. supply voltage Outputs free crossover current Offset-phase turn-ON output stages Z-diode logic supply standby-current drain Full, half, quarter, mini step Green (RoHS compliant) thermally enhanced package Qualified
PG-DSO-24-13
Description TCA3727G bipolar, monolithic driving bipolar stepper motors, motors other inductive loads that operate constant current. control logic power output stages bipolar windings integrated single chip which permits switched current control motors with 0.75 phase operating voltages direction value current programmed each phase separate control inputs. common oscillator generates timing current control turn-on with phase offset output stages. output stages full-bridge configuration have integrated, fast free-wheeling diodes free crossover current. logic supplied either separately with taken from motor supply voltage series resistor integrated Z-diode. device driven directly microprocessor with possibility modes from full step through half step mini step.
Type TCA3727G Data Sheet
Package PG-DSO-24-13
Marking 3727G Rev. 2.2, 2009-01-22
TCA3727G
Phase
IEP00898
Phase Inhibit
Figure Table
Configuration (top view) Definitions Functions Function Digital control inputs IX0, magnitude current particular phase. Table Input Phase controls current through phase winding H-potential phase current flows from Q12, L-potential reverse direction.
Ground; pins connected internally. Oscillator; works approx. this wired ground across Resistor sensing current phase Push-pull outputs Q11, phase with integrated free-wheeling diodes. Supply voltage; block ground, close possible with stable electrolytic capacitor least parallel with ceramic capacitor Logic supply voltage; either supply with connect across series resistor. Z-diode approx. integrated. both cases block ground directly with stable electrolytic capacitor parallel with ceramic capacitor Push-pull outputs Q22, phase with integrated free wheeling diodes. Resistor sensing current phase Inhibit input; standby potential this pin. This reduces current consumption substantially. Input phase controls current flow through phase winding H-potential phase current flows from Q22, potential reverse direction.
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Table
Digital Control Inputs IX0, Phase Current Imax Imax Example Motor Status current Hold Accelerate
typical Imax with Rsense
Imax
Oscillator Functional Logic Phase
Phase
Phase
Inhibit
Inhibit
Phase Functional Logic Phase
Phase
5-8, 17-19
IEB00899
Figure
Block Diagram 3727G
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Table Parameter
Absolute Maximum Ratings Symbol Min. Limit Values Max. Z-diode IXX; Phase Inhibit max. 10,000 -0.3 Unit Remarks
Supply voltage Logic supply voltage Z-current Output current Ground current Logic inputs
oscillator input voltage
Junction temperature Storage temperature
IGND VIXX VRX, VOSC Tstg
Note: Stresses above those listed here cause permanent damage device. Exposure absolute maximum rating conditions extended periods affect device reliability. Table Parameter Supply voltage Logic supply voltage Case temperature Output current Logic inputs Thermal Resistances Junction ambient Operating Range Symbol Limit Values Min. Max. 1000 without series resistor measured Pdiss IXX; Phase Inhibit PG-DSO-24-13 PG-DSO-24-13 -1000 Unit Remarks
VIXX
Junction ambient (soldered thick board copper area) Junction case
measured PGDSO-24-13
Note: operating range, functions given circuit description fulfilled.
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Table Parameter
Characteristics Symbol Min. Limit Values Typ. Max. Unit Test Condition
Current Consumption from from from from Oscillator Output charging current Charging threshold Discharging threshold Frequency Phase Current Selection (R1; Current Limit Threshold current Hold Setpoint Accelerate Logic Inputs (IX1; IX0; Phase Threshold L-input current L-input current H-input current Standby Cutout (inhibit) Threshold Threshold Hysteresis Internal Z-Diode Z-voltage Power Outputs Diode Transistor Sink Pair (D13, T13; D14, T14; D23, T23; D24, T24) Saturation voltage Saturation voltage Reverse current Forward voltage Forward voltage
Vinh Vinh IQ1/2 Vinh Vinh IQ1/2
IOSC VOSCL VOSCH fOSC
COSC
Vsense Vsense Vsense Vsense VInh (LH) VInh (HL) VInhhy
(HL) -100
(LH)
Vsatl Vsatl
-0.5 -0.75 0.75
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Table Parameter
Characteristics (cont'd) Symbol Min. Limit Values Typ. Max. Unit Test Condition
Diode Transistor Source Pair (D11, T11; D12, T12; D21, T21; D22, T22) Saturation voltage Saturation voltage Saturation voltage Saturation voltage Reverse current Forward voltage Forward voltage Diode leakage current
VsatuC VsatuD VsatuC VsatuD
charge discharge 0.75 charge 0.75 discharge -0.5 -0.75 -0.75
Note: listed characteristics ensured over operating range integrated circuit. Typical characteristics specify mean values expected over production spread. otherwise specified, typical characteristics apply given supply voltage.
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Quiescent Current versus Supply Voltage
Quiescent Current versus Junction Temperature
IED01655
IED01656
Output Current versus Junction Temperature
Operating Condition:
VInh COSC Rsense Load: fphase mode: fullstep
IED01657
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Output Saturation Voltages Vsat versus Output Current
Forward Current Free-Wheeling Diodes versus Forward Voltages
IED01167
Typical Power Dissipation Ptot versus Output Current (non stepping)
Permissible Power Dissipation Ptot versus Case Temperature
Ptot P-DSO-24
IED01660
Measured
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Input Characteristics IXX, Phase Inhibit
Input Current Inhibit versus Junction Temperature
IED01661
Oscillator Frequency fOSC versus Junction Temperature
IED01663
COSZ 2.2nF
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Phase Inhibit Phase
3727
VSatl
VSatu
VSense
VOSC
7,8,17,18,19,20
VSense
IES00706
Figure
Test Circuit
Micro Controller
Phase Inhibit Phase
3727
6,7,8 17,18,19,20
IES00707
Figure
Application Circuit
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Accelerate Mode
Normal Mode
Phase
Phase
IED01666
Figure
Full-Step Operation
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Accelerate Mode
Normal Mode
Phase
Phase
IED01667
Figure
Half-Step Operation
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Figure
Quarter-Step Operation
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Phase
hold
hold hold
hold Phase
IED01665
Figure
Mini-Step Operation
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
satu satu
Operating conditions:
phase phase phase Inhibit
IED01177
Figure
Current Control
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Inhibit Phase Oscillator High Imped. Phase Changeover Oscillator High Imped.
satl High Impedance Vsatu Vsatu High Impedance High Impedance
Phase
Slow Current Decay Fast Current Decay Fast Current Decay Inhibit
IED01178
Operating Conditions:
phase phase
Slow Current Decay
Figure
Phase Reversal Inhibit
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Calculation Power Dissipation total power dissipation Ptot made saturation losses Psat (transistor saturation voltage diode forward voltages), quiescent losses (quiescent current times supply voltage) switching losses (turn-ON turn-OFF operations).
following equations give power dissipation chopper operation without phase reversal. This worst case, because full current flows entire time switching losses occur addition.
Ptot Psat
where
Psat {Vsatl VsatuC VsatuD
DOFF
nominal current (mean value) quiescent current reverse current during turn-on delay peak reverse current conducting time chopper transistor turn-ON time tOFF turn-OFF time tDON turn-ON delay tDOFF turn-OFF delay
cycle duration duty cycle tp/T Vsatl saturation voltage sink transistor (T3, VsatuC saturation voltage source transistor (T1, during charge cycle VsatuD saturation voltage source transistor (T1, during discharge cycle forward voltage free-wheeling diode (D1, supply voltage logic supply voltage current from logic supply
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
sense sense
IES01179
Figure
Voltage Current Chopper Transistor
Turn-ON
Turn-OFF
Vsatl
IET01210
Figure
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Application Hints TCA3727G intended drive both phases stepper motor. Special care been taken provide high efficiency, robustness minimize external components. Power Supply TCA3727G will work with supply voltages ranging from circuit operates with chopper regulation current, interference generation problems arise some applications. Therefore power supply should decoupled 0.22 ceramic capacitor located near package. Unstabilized supplies even afford higher capacities. Current Sensing current windings stepper motor sensed voltage drop across Depending selected current internal comparators will turn sink transistor soon voltage drop reaches certain thresholds (typical 0.25 0.75 (R1, These thresholds neither affected variations variations chopper control fast current rises A/µs) will occur sensing resistors prevent malfunction current sensing mechanism should pure ohmic. resistors should wired directly possible. Capacitive loads such long cables (with high wire wire capacity) motor should avoided same reason. Synchronizing Several Choppers some applications synchronous chopping several stepper motor drivers desirable reduce acoustic interference. This done forcing oscillator TCA3727G pulse generator overdriving oscillator loading currents (approximately ±100 µA). these applications level should between while high level should between Optimizing Noise Immunity Unused inputs should always wired proper voltage levels order obtain highest possible noise immunity. prevent crossconduction output stages TCA3727G uses special break before make timing power transistors. This timing circuit triggered short glitches (some hundred nanoseconds) Phase inputs causing output stage become high resistive during some microseconds. This will lead fast current decay during that time. achieve maximum current accuracy such glitches Phase inputs should avoided proper control signals. Thermal Shut Down protect circuit against thermal destruction, thermal shut down been implemented. provide warning critical applications, current sensing element wired input Inhibit. Before thermal shut down occurs Inhibit will start pull down some hundred microamperes. This current sensed build temperature prealarm.
Data Sheet
Rev. 2.2, 2009-01-22
TCA3727G
Package Outlines
-0.1
2.65 MAX.
0.35
+0.0
2.45 -0.2
1.27 0.35 +0.15
+0.8
10.3 ±0.3
15.6 -0.4 Index Marking
Does include plastic metal protrusion 0.15 max. side Lead width 0.61 max. dambar area
P/PG-DSO-24-1, -13, -15, -16-PO
Figure
PG-DSO-24-13
Green Product (RoHS compliant) meet world-wide customer requirements environmentally friendly products compliant with government regulations device available green product. Green products RoHS-Compliant (i.e Pb-free finish leads suitable Pb-free soldering according IPC/JEDEC J-STD-020).
further information alternative packages, please visit website: Data Sheet
0.23
MAX.
Dimensions Rev. 2.2, 2009-01-22
-0.2
TCA3727G
Revision History
Revision Date 2009-01-22 Changes Final Green Data Sheet version TCA3727G Page Removed P-DIP-20 reference Permissible Power Dissipation Case Temperature curve. Page Updated Figure PG-DSO-24-13 pinout Initial version RoHS-compliant derivate TCA3727 Page certified statement added Page added RoHS compliance statement Green product feature Page Package changed RoHS compliant version Page 25-26: added Revision History, updated Legal Disclaimer Final Data Sheet Initial Release
2008-12-04
2007-06-25 1998-12-16
Data Sheet
Rev. 2.2, 2009-01-22
Edition 2009-01-22 Published Infineon Technologies 81726 Munich, Germany 2009 Infineon Technologies Rights Reserved. Legal Disclaimer information given this document shall event regarded guarantee conditions characteristics. With respect examples hints given herein, typical values stated herein and/or information regarding application device, Infineon Technologies hereby disclaims warranties liabilities kind, including without limitation, warranties non-infringement intellectual property rights third party. Information further information technology, delivery terms conditions prices, please contact nearest Infineon Technologies Office (www.infineon.com). Warnings technical requirements, components contain dangerous substances. information types question, please contact nearest Infineon Technologies Office. Infineon Technologies components used life-support devices systems only with express written approval Infineon Technologies, failure such components reasonably expected cause failure that life-support device system affect safety effectiveness that device system. Life support devices systems intended implanted human body support and/or maintain sustain and/or protect human life. they fail, reasonable assume that health user other persons endangered.

TCA3727G 2-phase Stepper Motor Driver Bipolar Automotive Pow

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