GS-D200S SGS-Thomson-Microelectronics, GS-D200S Datasheet
GS-D200S
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GS-D200S Summary of contents
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... The GS-D200 uses bipolar power outputs while the GS-D200S has powermos outputs to significantly reduce both commutation and conduction losses. A further benefit offered by the GS-D200S is the complete protection of the outputs against any type of shorts. SELECTION CHART Type ...
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... Quiescent Supply Current I s Quiescent Logic Supply Current I ss Input Voltage V i Input Current I i Source/Sink Saturation Voltage(GS-D200) V sat Source/Sink Saturation Voltage(GS-D200S) Pin V sat Current Limit Intervention Chopper Frequency Stepckl Width t clk Set Up Time t s Hold Time ...
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... Figure 2: GS-D200 and GS-D200S Block Diagram GS-D200/GS-D200S 3/17 ...
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... GS-D200/GS-D200S Figure 3: GS-D Modules Typical Application Figure 4: GS-D200 and GS-D200S Connection Diagram (Top view) 4/17 ...
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... The oscillator input must be grounded when the unit is externally synchronized. Phase current setting input. A resistor connected between this pin and Gnd1 oset allows the factory setted phase current value (1A for GS-D200 and 2A for GS-D200S changed. Logic input that allows the phase current decay mode selection. When high or ...
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... GS-D200/GS-D200S BIPOLAR STEPPER MOTOR BASICS Simplified to the bare essentials, a bipolar perma- nent magnet motor consists of a rotating-perma- nent magnet surrounded by stator poles carrying the windings (fig. 5). Figure 5: Simplified Bipolar Two Phase Motor Bidirectional drive current is imposed on windings A-B and C-D and the motor is stepped by commu- tating the voltage applied to the windings in se- quence ...
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... Figure 7: Two-Phase-on (Normal Mode) Drive Figure 8: Half Step Sequence GS-D200/GS-D200S 7/17 ...
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... GS-D200/GS-D200S PHASE SEQUENCE GENERATION INSIDE THE GS-D200/GS-D200S The modules contains a three bit counter plus some combinational logic which generate suitable phase sequences for half step, wave and normal full step drive. This 3 bit counter generates a basic eight-step Gray code master sequence as shown in fig ...
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... By selecting CONTROL HIGH, the average current is increased thanks to the slow decay. oset When the GS-D200S is used in the fast-decay mode it is recommended to connect external fast recovery, low drop diodes between each phase output and the supply return (GND). The slow-de- ...
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... GS-D200/GS-D200S Figure 12: Chopper Control with Slow Decay Figure 13: Chopper Control with Fast Decay 10/17 drive current ( ON – – – – recirculati o n current (Q ON, Q OFF drive current ( ON – – – – recirculation current ( OFF, D ...
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... Phase Current Programming The output current of the GS-D200 is factory set to 1A while the GS-D200S has a standard 2A value. The phase current value can be changed by con- necting an appropriate resistor between pin 9 and ground or V (see fig. 14). In the first case the ...
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... GS-D200/GS-D200S Figure 14: GS-D200 and GS-D200S Phase Current Programming Chopper Frequency Programming The chopper frequency is internally set to 17kHz, and it can be changed by addition of external components as follows. To increase the chopper frequency a resistor must be connected between Oscillator (pin 8) and V (pin 12, see fig. 15). ...
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... If all the motors are relatively small, the fast decay may be used, the chopper frequency does not need Figure 18: Multimotor Synchronization. Small Motor and Fast Current Decay Figure 17: GS-D200S Free Air Derating Curve Tamb ( C) any adjustement and fig. 18 shows how to synchro- nize several modules. ...
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... GS-D200/GS-D200S Figure 19: Multimotor Synchronization. Large and Small Motor. Slow Current Decay THERMAL OPERATING CONDITIONS In many cases the modules do not require any additional cooling because the dimensions and the shape of the metal box are studied to offer the minimum possible thermal resistance case-to-am- bient for a given volume ...
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... Rth Rth Rth hs Rth The following table gives the thermal resistance of some commercially available heath-sinks that fit on the GS-D200 module. Manufacturer Part Number R Thermalloy Thermalloy Thermalloy Half Step Fischer 6.38 W Assman 6.60 W Assman GS-D200/GS-D200S (7 93.5 C tot th Tamb 85 55 3.9 C 7.7 P tot 5 3.9 tot 17.7 C ...
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... GS-D200/GS-D200S MECHANICAL DATA 2.2 (0.87) 2.54 (0.1) 29.5 18.4 (1.16) (0.72) 23.0 (0.90) 2.2 (0.87) Dimensions in mm MOTHER BOARD LAYOUT 16/17 85.5 (3.37) 5.04 (0.2) 5.04 (0.2) 5.04 (0.2) 1.2 (0.47) 66.67 (2.62) 78.5 (3.09) 82.3 (3.24) 0.5 (0.02) 20.5 (0.81) 18.5 (0.73) 2.54 (0.1) 2.54 (0.1) 4 (0.16) 7 (0.28) ...
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... SGS-THOMSON Microelectroni c s. 1994 SGS-THOMSON Microelectronics – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. GS-D200/GS-D200S 17/17 ...