Note*: Conditions: VCC1 = 24V, IOH = 1.5A, 2W1-2 excitation mode.

Transcription

1 Ordering number : END STK6--E Thick-Film Hybrid IC Unipolar Constant-current Chopper (external excitation PWM) Circuit with uilt-in Microstepping Controller Stepping Motor Driver (sine wave drive) Output Current. (no heat sink*) Overview The STK6--E is a stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a builtin microstepping controller and is based on a unipolar constant-current PWM system. The STK6--E supports application simplification and standardization by providing a built-in phase distribution stepping motor controller. It supports five excitation methods: phase, - phase, W- phase, W- phase, and W- phase excitations, and can provide control of the basic stepping angle of the stepping motor divided into / step units. It also allows the motor speed to be controlled with only a clock signal. The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels, low noise, fast response, and high-efficiency drive. pplications Facsimile stepping motor drive (send and receive) Paper feed and optical system stepping motor drive in copiers Laser printer drum drive Printer carriage stepping motor drive X-Y plotter pen drive Other stepping motor applications Note*: Conditions: VCC = V, IOH =., W- excitation mode. ny and all SNYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, V equipment, 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 SNYO 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's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. 6HKIM/TN(OT)/6RM (OT) No. -/

2 STK6--E Features Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator. <Control lock Features> One of five drive types can be selected with the drive mode settings (M, M, and M) ) phase excitation drive ) - phase excitation drive ) W- phase excitation drive ) W- phase excitation drive ) W- phase excitation drive Provides four freely selectable modes for the vector locus during microstepping drive: circular mode, one inside mode, and two outside modes. Phase retention even if excitation is switched. The excitation phase state can be verified in real time using the MO, MO, and MOI signal output pins. The input counter block can be selected to be one of the following by the high/low setting of the M input pin. ) Rising edge only ) oth rising and falling edges The and RETURN input pins include built-in malfunction prevention circuits for external pulse noise. ENLE and pins provided. These are Schmitt trigger inputs with built-in kω (typical) pull-up resistors. No noise generation due to the difference between the and phase time constants during motor hold since external excitation is used. Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any value between V and /VCC. <Driver lock> External excitation PWM drive allows a wide operating supply voltage range (VCC = to V) to be used. Current detection resistor (.Ω) built-in the hybrid IC itself. Power MOSFETs adopted for low drive loss. Provides a motor output drive current of IOH =.. Specifications bsolute Maximum Ratings at Ta = C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC max No signal V Maximum supply voltage V CC max No signal -. to. V Input voltage V IN max Logic input pins -. to. V Output current I OH max.s, pulse, when V CC applied. Load: R = Ω, L = mh for each phase.. Repeated avalanche capacity Ear max mj llowable power dissipation Pd max θc-a = W Operating substrate temperature Tc max C Junction temperature Tj max C Storage temperature Tstg - to C llowable Operating Ranges at Ta = C Parameter Symbol Conditions Ratings Unit Supply voltage V CC With signals applied to V Supply voltage V CC With signals applied ± % V Input voltage V IH to V CC V Phase driver withstand voltage V DSS Tr,,, and (the,,, and outputs) (min) V Output current I OH Duty %. No. -/

3 STK6--E Electrical Characteristics at Tc = C, VCC = V, VCC = V Parameters Symbols Conditions Rating min typ max unit Control supply current I CC Pin, with ENLE pin held low.. m Output saturation voltage Vsat R L = Ω (I. ).. V verage output current Ioave Load: R =.Ω / L =.mh For each phase, Vref V.6..6 FET diode forward voltage Vdf If =.. V [Control Inputs] Input voltage Input current V IH Except for the Vref pin V V IL Except for the Vref pin V I IH Except for the Vref pin μ I IL Except for the Vref pin μ [Vref Input Pin] Input voltage V I Pin. V Input current I I Pin μ [Control Outputs] Output voltage V OH I = m, pins MOI, MO, MO. V V OL I = m, pins MOI, MO, MO. V [Current Distribution Ratio ( )] W-, W-, - Vref θ = / % W-, W- Vref θ = / % W- Vref θ = / % W-, W-, - Vref θ = / % W- Vref θ = / % W-, W- Vref θ = 6/ % W- Vref θ = / % Vref % PWM frequency fc khz Note: constant-voltage power supply must be used. The design target value is shown for the current distribution ratio. Package Dimensions unit:mm (typ)..... =.... No. -/

4 STK6--E Internal lock Diagram M M CW M RETURN MOI MO MO ENLE SG Excitation mode control Rise/fall detection and switching Rise detection Excitation state monitor RC oscillator VCC M M Vref 6 Current distribution ratio switching Phase advance counter Pseudo-sine wave generator Phase excitation drive signal generation Reference clock generation PWM control SU PG ITF66 No. -/

5 STK6--E Test Circuit Diagrams Vsat Vdf V CC VCC Start STK6--E 6 Ω STK6--E 6 Vref=.V V V VCC ITF6 ITF6 IIH, IIL Ioave, ICC, fc VCC VCC VCC IIH IIL M M M M M STK6--E CW RETURN ENLE Vref ITF6 Vref=V V Low when measuring I CC Start V V VCC 6 STK6--E a b a b SW SW VCC ITF When measuring Ioave: With SW set to a, Vref = V When measuring fc: With SW set to b, Vref = V When measuring ICC: Set ENLE low No. -/

6 STK6--E Power-on Reset The application must perform a power-on reset operation when VCC power is first applied to this hybrid IC. pplication circuit that used W- phase excitation (microstepping operation) mode. V CC =V VCC=V to V V CC =V 6 Two-phase stepping motor μf or higher ENLE kω RET STK6--E VCC=V SG PG MoI Mo Mo Vref ITF Setting the Motor Current The motor current IOH is set by the Vref voltage on the hybrid IC pin. The following formula gives the relationship between IOH and Vref. IOH = Vref/Rs, Rs: The hybrid IC internal current detection resistor (.Ω ±%) pplications can use motor currents from the current (. to.) set by the duty of the frequency set by the oscillator up to the limit of the allowable operating range, IOH =. I OL I OH Motor current waveform Ioave Function Table M M Phase switching clock edge timing M phase excitation - phase excitation W- phase excitation W- phase excitation Rising edge only - phase excitation W- phase excitation W- phase excitation W- phase excitation Rising and falling edges Forward Reverse ENLE Motor current is cut off when low CW ctive low MO MO No. -6/

7 STK6--E Printed Circuit oard Design Recommendations This hybrid IC has two grounds, the PG pins (pins and ) and the SG pin (pin ). These are connected internally in the hybrid IC. Two power supplies are required: a motor drive supply and a V supply for the hybrid IC itself. If the ground connections for these supplies are not good, the motor current waveforms may become unstable, motor noise may increase, and vibration levels may increase. Use appropriate wiring for these grounds. Here we present two methods for implementing these ground connections. If the grounds for the motor drive supply and the hybrid IC V supply are connected in the immediate vicinity of the power supplies: If PG and SG are shorted at the power supply, connect only the PG line to pins and on the hybrid IC. lso, be sure that no problems occur due to voltage drops due to common impedances. In the specifications, this must be VCC ±%. The current waveforms will be more stable if the Vref ground is connected to pin. For initial values, use μf or over for C and μf or over for C. Locate C as close to the hybrid IC as possible, and the capacitor ground line must be as short as possible. Stepping motor Motor drive power supply -- PG C STK6--E μf or over PG V power supply -- SG Oscillator circuit () C μf or over VCC Vref SG ITF If the grounds for the motor drive supply and the hybrid IC V supply are separated: Insert a capacitor (C) of μf or over as close as possible to the hybrid IC. The capacitor ground line must be as short as possible. The capacitor C may be included if necessary. Its ground line should also be as short as possible. Stepping motor Motor drive power supply -- PG C STK6--E Separation μf or over PG V power supply -- SG Oscillator circuit () C μf or over V CC Vref SG ITF No. -/

8 Functional Description External Excitation Chopper Drive lock Description STK6--E V CC M M IOFF ION Enable φ (control signal) Current divider Vref L φ L φ khz Divider S CR oscillator khz = D MOSFET ND Q Latch circuit R Noise filter Rs ITF Driver lock asic Circuit Structure Since this hybrid IC adopts an external excitation method, no external oscillator circuit is required. When a high level is input to φ in the basic driver block circuit shown in the figure and the MOSFET is turned on, the comparator input will go low and the comparator output will go low. Since a set signal with the PWM period will be input, the Q output will go high, and the MOSFET will be turned on as its initial value. The current ION flowing in the MOSFET passes through L and generates a potential difference in Rs. Then, when the Rs potential and the Vref potential become the same, the comparator output will invert, and the reset signal Q output will invert to the low level. Then, the MOSFET will be turned off and the energy stored in L will be induced in L and the current IOFF will be regenerated to the power supply. This state will be maintained until the time when an input to the latch circuit set pin occurs. In this manner, the Q output is turned off and on repeatedly by the reset and set signals, thus implementing constant current control. The resistor and capacitor on the comparator input are spike removal circuit elements and synchronize with the PWM frequency. Since this hybrid IC uses a fixed frequency due to the external excitation method and at the same time also adopts a synchronized PWM technique, it can suppress the noise associated with holding a position when the motor is locked. Input Pin Functions Pin No. Symbol Function Pin circuit type Phase switching clock uilt-in pull-up resistor CMOS Schmitt trigger input CW Rotation direction setting (CW/CCW) uilt-in pull-up resistor CMOS Schmitt trigger input RETURN Forced phase origin return uilt-in pull-up resistor CMOS Schmitt trigger input ENLE Output cutoff uilt-in pull-up resistor CMOS Schmitt trigger input,, M, M, M Excitation mode setting uilt-in pull-up resistor CMOS Schmitt trigger input, M, M Vector locus setting uilt-in pull-up resistor CMOS Schmitt trigger input System reset uilt-in pull-up resistor CMOS Schmitt trigger input Vref Current setting Operational amplifier input No. -/

9 STK6--E Input Signal Functions and Timing (phase switching clock) ) Input frequency range: DC to khz ) Minimum pulse width: μs ) Duty: to 6% (However, the minimum pulse width takes precedence when M is high.) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) uilt-in multi-stage noise rejection circuit 6) Function: - When M is high or open: The phase excited (driven) is advanced one step on each rising edge. - When M is low: The phase is advanced one step by both rising and falling edges, for a total of two steps per cycle. Input cquisition Timing (M = Low) input System clock Phase excitation counter clock Excitation counter up/down Control output timing Control output switching timing 6 CW (Method for setting the rotation direction) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) Function: - When CW is low: The motor turns in the clockwise direction. - When CW is high: The motor turns in the counterclockwise direction. ) Notes: When M is low, the CW input must not be changed for about 6.μs before or after a rising or falling edge on the input. RETURN (Forcible return to the origin for the currently excited phase) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) uilt-in noise rejection circuit ) Notes: The currently excited (driven) phase can be forcibly moved to the origin by switching this input from low to high. Normally, if this input is unused, it must be left open or connected to VCC. ENLE (Controls the on/off state of the,,, and excitation drive outputs and selects either operating or hold as the internal state of this hybrid IC.) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) Function: - When ENLE is high or open: Normal operating state - When ENLE is low: This hybrid IC goes to the hold state and excitation drive output (motor current) is forcibly turned off. In this mode, the hybrid IC system clock is stopped and no inputs other than the reset input have any effect on the hybrid IC state. No. -/

10 STK6--E M, M, and M (Excitation mode and input edge timing selection) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) Function: M M M Phase switching clock edge timing phase excitation - phase excitation W- phase excitation W- phase excitation Rising edge only - phase excitation W- phase excitation W- phase excitation W- phase excitation Rising and falling edges ) Valid mode setting timing: pplications must not change the mode in the period μs before or after a signal rising or falling edge. Mode Setting cquisition Timing input System clock Mode setting M to M Mode switching clock Mode switching timing Hybrid IC internal setting state Phase excitation clock Excitation counter up/down 66 M and M (Microstepping mode rotation vector locus setting) M M Phase Mode Circular See page for details on the current division ratio. Circular Phase ITF (Resets all parts of the system.) ) Pin circuit type: uilt-in pull-up resistor (kω, typical) CMOS Schmitt trigger structure ) Function: - ll circuit states are set to their initial values by setting the pin low. (Note that the pulse width must be at least μs.) t this time, the and phases are set to their origin, regardless of the excitation mode. The output current goes to about % after the reset is released. ) Notes: When power is first applied to this hybrid IC, Vref must be established by applying a reset. pplications must apply a power on reset when the VCC power supply is first applied. Vref (Sets the current level used as the reference for constant-current detection.) ) Pin circuit type: nalog input structure ) Function: - Constant-current control can be applied to the motor excitation current at % of the rated current by applying a voltage less than the control system power supply voltage VCC minus.v. - pplications can apply constant-current control proportional to the Vref voltage, with this value of.v as the upper limit. No. -/

11 STK6--E Output Pin Functions Pin No. Symbol Function Pin circuit type MOI Phase excitation origin monitor Standard CMOS structure, MO, MO Phase excitation state monitor Standard CMOS structure Output Signal Functions and Timing,,, and (Motor phase excitation outputs) ) Function: - In the phase and phase excitation modes, a.μs (typical) interval is set up between the and and and output signal transition times. MO, MO, and MOI (Phase excitation state monitors) ) Pin circuit type: Standard CMOS structure ) Function: - Output of the current phase excitation output state. Phase coordinate Phase Phase Phase Phase MO MO MOI outputs a when each phase is at the origin, and outputs a otherwise. Current division ratios set by M, M, and M Values provided for reference purposes. Mode Circular Setting M = M = Current division ratio W- M = M = M = M = M = M = M = M = Units Number of steps / W- / / / W- / / / W- 6 / 6/ / % W- 6 / / / W- / / / W- 6/ / / W- / / [Load conditions] VCC = V, VCC = V, R/L =./.mh No. -/

12 STK6--E Phase States During Excitation Switching Excitation phases before and after excitation mode switching <clockwise direction> W- phase phase W- phase - phase W- phase W- phase W- phase phase W- phase - phase W- phase W- phase phase phase - phase W- phase - phase W- phase 6 6 phase - phase phase W- phase phase W- phase Excitation phase according to the first clock input pulse after changing the excitation mode setting (M and M) Excitation phase immediately before setting the excitation mode 6 No. -/

13 STK6--E Excitation phases before and after excitation mode switching <counterclockwise direction> W- phase phase W- phase - phase W- phase W- phase W- phase phase W- phase - phase W- phase W- phase phase phase - phase W- phase - phase W- phase phase - phase phase W- phase phase W- phase 6 No. -/

14 STK6--E Excitation Time and Timing Charts rising edge operation Phase Excitation Timing Chart (M = ) M M M - Phase Excitation Timing Chart (M = ) M M M CW MOSFET gate signal MO MO MOI CW MOSFET gate signal MO MO MOI % % % % Comparator reference voltage Vref % % Comparator reference voltage Vref % % Vref Vref W- Phase Excitation Timing Chart (M = ) M M M W- Phase Excitation Timing Chart (M = ) M M M CW MOSFET gate signal MO MO MOI CW MOSFET gate signal MO MO MOI Comparator reference voltage % % % % Vref % % % % Comparator reference voltage % % % % % % % Vref % % % % % % Vref % Vref ITF6 No. -/

15 rising and falling edge operation STK6--E - Phase Excitation Timing Chart (M = ) M M M W- Phase Excitation Timing Chart (M = ) M M M CW MOSFET gate signal MO MO MOI CW MOSFET gate signal MO MO MOI % % % % % Comparator reference voltage Vref % % Comparator reference voltage % Vref % % % % Vref Vref W- Phase Excitation Timing Chart (M = ) M M M W- Phase Excitation Timing Chart (M = ) M M M CW MOSFET gate signal MO MO MOI CW MOSFET gate signal MO MO MOI Comparator reference voltage % % % % % % % Vref % % % % % % % Vref Comparator reference voltage % % % % % % % 6% % % % % % % Vref % % % % % % % 6% % % % % % % Vref ITF No. -/

16 STK6--E Thermal Design <Hybrid IC verage Internal Power Loss Pd> The main elements internal to this hybrid IC with large average power losses are the current control devices, the regenerative current diodes, and the current detection resistor. Since sine wave drive is used, the average power loss during microstepping drive can be approximated by applying a waveform factor of.6 to the square wave loss during phase excitation. The losses in the various excitation modes are as follows. phase excitation PdEX = (VsatVdf) I IOH t OH (Vsat tvdf t) I - phase excitation Pd-EX =.6 {(VsatVdf) IOH t OH (Vsat tvdf t)} I W- phase excitation PdW-EX =.6 {(VsatVdf) IOH t OH (Vsat tvdf t)} W- phase excitation PdW-EX =.6 {(VsatVdf) I IOH t OH (Vsat tvdf t)} I OH W- phase excitation PdW-EX =.6 {(VsatVdf) IOH t (Vsat tvdf t)} Here, t and t can be determined from the same formulas for all excitation methods. t = L n ( R. IOH) t = L V n ( CC. ) R. V CC R I OH R V CC. However, the formula for t differs with the excitation method. phase excitation t = (tt) - phase excitation t = t W- phase excitation t = t W- phase excitation W- phase excitation t = t IOH t t t Motor Phase Current Model Figure ( Phase Excitation) : input frequency (Hz) Vsat : The voltage drop of the power MOSFET and the current detection resistor (V) Vdf : The voltage drop of the body diode and the current detection resistor (V) IOH : Phase current peak value () t : Phase current rise time (s) VCC : Supply voltage applied to the motor (V) t : Constant-current operating time (s) L : Motor inductance (H) t : Phase switching current regeneration time (s) R : Motor winding resistance (Ω) No. -/

17 STK6--E <Determining the Size of the Hybrid IC Heat Sink> Determine θc-a for the heat sink from the average power loss determined in the previous item. Tc max: Hybrid IC substrate temperature ( C) θc-a = Tc max - Ta [ C/W] Ta: pplication internal temperature ( C) Pd EX PdEX: Hybrid IC internal average loss (W) Determine θc-a from the above formula and then size S (in cm ) of the heat sink from the graphs shown below. The ambient temperature of the device will vary greatly according to the air flow conditions within the application. Therefore, always verify that the size of the heat sink is adequate to assure that the Hybrid IC back surface (the aluminum plate side) will never exceed a Tc max of C, whatever the operating conditions are. Heat sink thermal resistance, θc-a - C/W No. Fin. ( C/W) θc-a - Pd Guaranteed ambient temperature 6 C θc-a= Tc max -- Ta ( C/W) Pd Tc max= C C C 6 IC internal average power loss, Pd - W Heat sink thermal resistance, θc-a - C/W No. Fin. ( C/W) θc-a - S mm l plate (no surface finish) (flat black surface finish). ITF Heat sink surface area, S - cm Vertical standing type Natural convection air cooling ITF Next we determine the usage conditions with no heat sink by determining the allowable hybrid IC internal average loss from the thermal resistance of the hybrid IC substrate, namely C/W. For a Tc max of C at an ambient temperature of C PdEX = - =.W For a Tc max of C at an ambient temperature of C PdEX = - =.W This hybrid IC can be used with no heat sink as long as it is used at operating conditions below the losses listed above. (See ΔTc Pd curve in the graph on page.) <Hybrid IC internal power element (MOSFET) junction temperature calculation> The junction temperature, Tj, of each device can be determined from the loss Pds in each transistor and the thermal resistance θj-c. Tj = Tc θj-c Pds ( C) Here, we determine Pds, the loss for each transistor, by determining PdEX in each excitation mode. Pds = PdEX/ The steady-state thermal resistance θj-c of a power MOSFET is. C/W. No. -/

18 STK6--E 6 fc - VCC Tc = C 6 fc - Tc VCC = V (fixed) PWM frequency, fc - khz 6 PWM frequency, fc - khz Supply voltage, V CC - V ITF Vsat - IOH V CC = V (fixed) 6 Substrate temperature, Tc - C ITF V CC = V (fixed) IOH - Vdf Output saturation voltage, Vsat - V Tc = C Tc = C Phase output current, IOH - Tc= C Tc= C Motor output current, IOH -... Phase output current, IOH - ITF IOH -VCC Test motor: PK- Tc = C Phase output current, IOH -... FET diode forward voltage, Vdf - V ITF IOH -Tc Test motor: PK- V CC = V VCC = V Substrate temperature increase, ΔTc - C. Vref=V Supply voltage, VCC - V ITF 6 V CC = V, V CC = V Test motor: PK- (R =.Ω/L = mh) With IOH set at. EX ΔTc - PPS EX (V CC =6V IOH=.) -EX W-EX W-EX, W-EX Motor COM current, IM -. Vref=V 6 Substrate temperature, Tc - C ITF IM - VCC I OH =. IOH=. Tc = C, VCC = V PK- Motor common pin current With one phase held. k k k Input PPS - Hz ITF6 Supply voltage, VCC - V ITF No. -/

19 STK6--E Motor current setting voltage, Vref - V Tc = C V CC = V VCC = V PK- In hold mode loave Vref - I IOL IOH Substrate temperature increase, ΔTc - C 6 Self cooling for the independent (free standing) IC With no heat sink ΔTc - Pd(typ).... Motor output current, IOH, IOL, Ioave - ITF 6 Power loss, Pd - W ITF SNYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SNYO Semiconductor Co.,Ltd. products described or contained herein. SNYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SNYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SNYO Semiconductor Co.,Ltd. ny and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SNYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SNYO Semiconductor Co.,Ltd. or any third party. SNYO 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,. Specifications and information herein are subject to change without notice. PS No. -/