PBD35171 Datasheet | Ericsson

February 1999 PBD 3517/1 Stepper Motor Drive Circuit Description PBD 3517/1 is a bipolar, monolithic, integrated circuit, intended to drive a stepper motor in a unipolar, bilevel way. One PBD 3517/1 and a minimum of external ponents form a plete control and drive unit for LS-TTL- or microprocessor-controlled stepper motor system for currents up to 500m A. The driver is suited for applications requiring least-posssible RFI. Motor performance can be increased by operating in a bilevel drive mode. This means that a high voltage pulse is applied to the motor winding at the beginning of a step, in order to give a rapid rise of current. Key Features - plete driver and phase logic on chip - 2 x 350 m A continuous-output current - Half- and full-step mode generation - LS-TTL-patible inputs - Bilevel drive mode for high step rates - Voltage-doubling drive possibilities - Half-step position-indication output - Minimal RFI - 16-pin plastic DIP package or 16 pin small outline wide body STEP PB2 INH OA OB PA2 PA1 16-pin plastic DIP 16-pin SO (wide body) Figure 1. Block diagram. 1 PB1 Phase Logic Mono F-F /1 35 17 /1 PBD 3517/1 PBD 3517/1 Maximum Ratings Parameter Pin No. Symbol Min Max Unit Voltage Logic supply Second supply Logic input Current Phase output Second-level output Logic input The zero output Temperature Operating junction temperature Storage...