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BD63621MUV Scheda tecnica(PDF) 3 Page - Rohm |
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BD63621MUV Scheda tecnica(HTML) 3 Page - Rohm |
3 / 29 page 3/24 BD63621MUV TSZ02201-0P2P0B701290-1-2 © 2017 ROHM Co., Ltd. All rights reserved. 21.Dec.2020 Rev.002 www.rohm.com TSZ22111・15・001 Description of operation ○ SELECT/Input Mode Switching Terminal This is the terminal to set the input mode. SELECT DECAY Mode L DECAY Mode 1 H DECAY Mode 2 ○CLK/Clock input terminal for advancing the electrical angle CLK is reflected at rising edge. The Electrical angle advances by one for each CLK input. Motor’s misstep will occur if noise is picked up at the CLK terminal, so please design the pattern in such a way that there is no noise plunging ○MODE0,MODE1/Motor Excitation Mode Setting Terminal Set the motor excitation mode Please refer to the P.13-14 for the timing chart & motor torque vector of various excitation modes. Unrelated to CLK, change in setting is forcibly reflected (refer to P.16). ○CW_CCW/Motor rotating direction setting Set the motor’s rotating direction. Change in setting is reflected at the CLK rising edge immediately after the change in setting (refer to P.15) CW_CCW Rotating direction L Clockwise (CH2’s current is outputted with a phase lag of 90°in regard to CH1’s current) H Counter Clockwise (CH2’s current is outputted with a phase lead of 90°in regard to CH1’s current) ○ENABLE/Output enable terminal Turn off forcibly all the output transistors (motor output is open). When ENABLE=L, input to CLK is blocked, and phase advance operation of internal translator circuit is stopped. However, during excitation modes (MODE0,MODE1) switch within the interval of ENABLE=L, as ENABLE= L→H is reset, the new mode upon switch will be applied for excitation (refer to P.16). ENABLE Motor Output L OPEN (electrical angle maintained) H ACTIVE ○PS/Power save terminal PS can make circuit standby state and make motor output OPEN. In standby state, translator circuit is reset (initialized) and electrical angle is initialized. Please be careful because there is a delay of 40µs(Max) before it is returned from standby state to normal state and the motor output becomes ACTIVE (refer to P.12). PS Status L Standby state(RESET) H ACTIVE The electrical angle (initial electrical angle) of each excitation mode immediately after RESET is as follows (refer to P.13-14). Excitation Mode Initial Electrical Angle FULL STEP 45° HALF STEP A 45° HALF STEP B 45° QUARTER STEP 45° MODE0 MODE1 Excitation Mode L L FULL STEP H L HALF STEP A L H HALF STEP B H H QUARTER STEP |
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