FEATURES * Very Low Cost * Ultra Miniature Size (2.10 x 2.6 x 0.362 inches) (53.34 x 66.04 x 9.19 mm) * Advanced Hybrid Design * High Input Voltage (+12 to +48VDC/+24 to +75VDC) * High Output Current (3A RMS, 4A Peak/5A RMS, 7A Peak) * Up to 10MHz Step Clock Rate * No Minimum Inductance * FAULT Input and Output * Short Circuit and Over Temperature Protection * Microstep Resolution to 51,200 Step/Rev. (1.8 Motor) * Microstep Resolutions can be Changed "On-The-Fly" Without Loss of Motor Position * 20 kHz Chopping Rate * Automatically Switches Between Slow and Fast Decay for Unmatched Performance * 14 Selectable Resolutions Both in Decimal and Binary * Adjustable Automatic Current Reduction * At Full Step Output * Optional Cooling Fan (HFC-22) * Optional Receptacle Carrier (PR-22) DESCRIPTION The IM483H and IM805H are high performance, low-cost microstepping drivers that utilize advanced hybrid OPTION: Hybrid Mounted with Optional HFC-22 Heat Sink/ Fan/Clip Assembly. technology to greatly reduce size without sacrificing features. Both are exceptionally small, easy to interface and use, and yet powerful enough to handle the most demanding applications. Because the IM483H and IM805H share a common package and pin configuration, they offer flexibility in that the system designer can increase or decrease the power of the system as needed without the need to redesign the interface to the drive. The IM483H and IM805H have 14 built-in microstep resolutions (both binary and decimal). The resolution can be changed at any time without the need to reset the driver. This feature allows the user to rapidly move long distances, yet precisely position the motor at the end of travel without the expense of highperformance controllers. In many instances mechanical gearing can be replaced with microstepping. This reduces cost and system size, and eliminates potential maintenance while increasing accuracy and smoothness. With the development of proprietary and patented circuits, ripple current has been minimized to reduce the motor heating that is common with other designs. This feature allows the use of low inductance motors to improve high-speed performance and system efficiency. The IM483H/IM805H microstepping hybrids are designed to be soldered directly into a PC board. This eliminates the need for wiring and mounting, thus saving design and assembly time, reducing system cost and increasing reliability. The ultra-small size reduces the overall space required in your system. In addition, each unit is 100% tested and comes with a 2-year warranty. Available as options for the IM483H/IM805H are the HFC-22 Heat Sink/Fan/Clip assembly and the PR-22 Pin Receptacles with throwaway carrier. The HFC-22 provides a unique cooling solution and was designed specifically for the IM483H and IM805H Microstepping Hybrid Drivers. The HFC-22 will easily maintain a reliable rear plate temperature without using large heat sinks and cumbersome mounting hardware. The heat sink and fan are easily mounted to the driver by means of a removable clip developed by IMS, and when fully assembled with the IM483H or IM805H takes up only 6.8 in3 of space! For applications where ease of removal is required, the PR-22 provides a reliable, high quality receptacle which comes attached to a high temperature plastic throwaway carrier that facilitates wave soldering. These drives, because of their ultra-small size, advanced technology and low-cost, provide designers with affordable state-of-the-art solutions for the competitive edge needed in today's market. IM483H/IM805H SPECIFICATIONS ELECTRICAL Input Voltage (Motor)* _________ +12 to +48 VDC/+24 to +75 VDC Input Voltage (Logic) ____________________________________ +5 VDC Output Current (Per Phase) ___________ 3 Amps (RMS), 4A (Peak)/ 5A (RMS), 7A (peak) Step Clock Frequency (Max) ______________________________ 10MHz Steps per Revolution (1.8 Motor) 400, 800, 1000, 1600, 2000, 3200, 5000, 6400, 10000, 12800, 25000, 50000, 51200 Protection _____________________________ Thermal, Phase to Phase, VIN to Phase IM483H/IM805H Pin Assignments and Functions *Includes motor back EMF. TEMPERATURE Storage _________________________________________ -40 to +125 C Rear Mounting Surface _____________________________ 0 to +65 C OPTIONS TN-22H _______________________ Thermal Pad (Included with Driver) HFC-22 ___________________________ Heat Sink/Fan/Clip Assembly INT-483H/INT-805H _____________________ Driver Interface Board IM483H/IM805H-DK1 ___________________________ Developer's Kit (Includes Driver, Interface Board, Heat Sink/Fan/Clip Assembly) PR-22 __________________________________ 23 Pin Receptacles with Throwaway Carrier PB-22 ________________________________ Small Pry Bar (To Remove Throwaway Carrier/Driver From Pin Receptacles) OSC-483H _______ Analog Speed Control Board for IM483H Driver OSC-805H _______ Analog Speed Control Board for IM805H Driver MECHANICAL SPECIFICATIONS Dimensions in Inches (mm) BLOCK DIAGRAM DEVELOPER'S KIT/INTERFACE BOARD The Developer's Kit provides all of the tools needed for rapid prototyping and product evaluation of the IM483H/IM805H Hybrid drivers. Included in the Kit are a driver, an interface board and its schematic, and an HFC-22 assembly. The INT-483H/INT-805H interface board features an on-board +5V supply, additional fault protection, opto isolation for logic inputs, and removable screw terminals for easy prototyping. The interface board schematic provides a useful guide for PC board layout when completing a system design using the IM483H/ IM805H Hybrid. The HFC22 Heat Sink/ Fan/Clip assembly is designed specifically for use with the IM483H/ IM805H and provides a unique, compact cooling solution. MINIMUM CONNECTIONS INT-483H/INT-805H Pin Assignments and Descriptions PR-22 RECEPTACLE CARRIER Disposable plastic frame holds 23 receptacles in place for wave or hand solder, then simply pry the plastic frame free and throwaway. NOTE: Mounting screws MUST be used to secure Hybrid when using Receptacle Carrier. NOTE: Low impedance electrolytic capacitors MUST be placed between +V and the phase grounds for each phase (Pins P2: 2 & 8). In addition, a 68mF electrolytic capacitor MUST be placed between the +5 VDC output of the +5 volt supply and ground. Capacitors should be placed as close as possible to the driver. Dimensions in Inches (mm)