Stepping Motor Driver series High Voltage Series Stepping Motor Drivers BD6422EFV (PARALLEL-IN type) BD6425, BD6423EFV (CLK-IN type) No.12009EAT06 Description These products are a low power consumption PWM constant current-drive driver of bipolar stepping motor with power supplys rated voltage of 45V and rated output current of 1.0A, 1.5A. Feature 1) Power supply: one system drive (rated voltage of 45V) 2) Rated output current: 1.0A, 1.5A 3) Low ON resistance DMOS output 4) CLK-IN drive mode (BD6425/6423EFV) 5) Parallel IN drive mode (BD6422EFV) 6) PWM constant current control (other oscillation) 7) Built-in spike noise blanking function (external noise filter is unnecessary) 8) FULL STEP & HALF STEP (two kinds), applicable to QUARTER STEP 9) Current decay mode switching function (4 kinds of FAST/SLOW DECAY ratio) 10) Normal rotation & reverse rotation switching function (BD6425/6423EFV) 11) Power save function 12) Built-in logic input pull-down resistor 13) Power-on reset function(BD6425/6423EFV) 14) Thermal shutdown circuit (TSD) 15) Over current protection circuit (OCP) 16) Under voltage lock out circuit (UVLO) 17) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention) 18) Electrostatic discharge: 8kV (HBM specification) 19) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package Application serial dot impact printersewing machine etc. Absolute maximum ratings(Ta=25) Item Symbol BD6425EFBD64V 23/6422EFV Unit Supply voltage V -0.2+45.0 -0.2+45.0 V CC1,2 1 3 1.45 1.1 W Power dissipation Pd 2 4 4.70 4.0 W Input voltage for control pin V -0.2+5.5 -0.2+5.5 V IN RNF maximum voltage V 0.7 0.7 V RNF 5 5 Maximum output current I 1.5 1.0 A/phase OUT Operating temperature range T -25+85 -25+85 opr Storage temperature range T -55+150 -55+150 stg Junction temperature T +150 +150 jmax 1 70mm70mm1.6mm glass epoxy board. Derating in done at 11.6mW/ for operating above Ta=25. 2 4-layer recommended board. Derating in done at 37.6mW/ for operating above Ta=25. 3 70mm70mm1.6mm glass epoxy board. Derating in done at 8.8mW/ for operating above Ta=25. 4 4-layer recommended board. Derating in done at 32.0mW/ for operating above Ta=25. 5 Do not, however exceed Pd, ASO and Tjmax=150. www.rohm.com 2012.02 - RevA. 1/8 2012 ROHM Co., Ltd. All rights reserved. Technical Note BD6422EFV, BD6423EFV, BD6425EFV Operating conditions( (Ta= -25+85) Item Symbol BD6425EFV BD6423/6422EFVUnit Supply voltage V 19~42 V CC1,2 6 6 Maximum Output current (DC) I 1.2 0.7 A/phase OUT 6 Do not however exceed Pd, ASO. Electrical characteristics (Unless otherwise specified Ta=25V =37V) CC1,2 Limit Item Symbol Unit Condition Min. Typ. Max. Whole Circuit current at standby I - 1.0 2.5 mA L CCST Circuit current I - 2.0 5.0 mAPS=H, VREF=3V CC Control input H level input voltage V 2.0 - - V INH L level input voltage V - - 0.8 V INL H level input current I 35 50 AV100=5V INH IN L level input current I -10 0 AV =0- V INL IN Output (OUT1A, OUT1B, OUT2A, OUT2B) Output ON resistance(BD6425EFV) R - 1.10 I =1.431.0A,Sum of upper and lower ON OUT Output ON resistance(BD6423/6422EFV) R - 2.00 I =2.600.5A,Sum of upper and lower ON OUT Output leak current I - - A 10 LEAK Current control RNFXS input current (BD6425EFV) I -2.0 -0.1 A- RNFXS=0V RNFS RNFX input current I -40 -20 A RNFX=0V- RNF VREF input current I -2.0 -0.1 AV- REF=0V VREF VREF input voltage range V 0 - 3.0 V REF Minimum on time (Blank time) t 0.5 1.5 s3.0 C=470pF, R=82k ONMIN BD6425/6423EFV Comparator threshold V 0.57 0.60 0.63 V VREF3V CTH BD6422EFV Comparator threshold 100% V 0.57 0.60 0.63 V VREF3V, (I0X,I1X)= (L,L) CTH100 Comparator threshold 67% V 0.38 0.40 0.42 V VREF3V, (I0X,I1X)= (H,L) CTH67 Comparator threshold 33% V 0.18 0.20 0.22 V VREF3V, (I0X,I1X)= (L,H) CTH33 www.rohm.com 2012.02 - RevA. 2/8 2012 ROHM Co., Ltd. All rights reserved. = = = = PS=