bd67929efv ROHM Co. Ltd., bd67929efv Datasheet
bd67929efv
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bd67929efv Summary of contents
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... BD67929EFV ●Description BD67929EFV is a 3-phase brushless motor driver for polygon mirror motors of direct PWM drive type built-in PLL ensuring. As for its basic function 3-phase 120°energization direct PWM drive type with power supply rated voltage of 36V and rated output current 2.3A useful for high speed drive. It has the P-MOS and D-MOS on the output block, and the output ON Resistance is very low 1.35Ω ...
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... BD67929EFV ●Absolute maximum ratings (Ta=25℃) Parameter Supply voltage Applied voltage of LD, FG terminal Applied voltage of HB terminal Input voltage of Hall signal Input voltage of CLK Input voltage of control pin (SS, SBE) Power dissipation Output current Operating temperature range Storage temperature range Junction temperature *1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 11.6mW/℃ for operating above Ta=25℃ ...
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... BD67929EFV ●Electrical characteristics (Unless otherwise specified, Ta=25℃, V Parameter Whole Circuit current 1 Circuit current 2 VREG output Output voltage Driver block ( Output ON resistance Forward voltage of Diode on low side Forward voltage of Diode on high side Output leak current Hall comparator (HUP, HUN, HVP, HVN, HWP, HWN) ...
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... BD67929EFV ●Pin function Pin No Pin name 1 GND Ground 2 VCC Power supply terminal output terminal Current detection comparator 4 CS input terminal Connection terminal of resistor 5 RNF for output current detection 6 W Output terminal 7 V Output terminal 8 U Output terminal 9 HB Bias terminal for Hall element ...
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... BD67929EFV ●Terminal function ○HWP, HVP, HUP, HWN, HVN, HUN/Hall signal input terminal These terminals are the input terminals of the output signals from Hall elements. This has the comparator with hysteresis. The width of hysteresis voltage is ±12mV(Typ.). The output of this comparator will be high if the voltage of HxP terminal is greater than the voltage of HxN terminal by 12mV, and the level will be low if the voltage of HxP terminal is less than the voltage of HxN terminal by 12mV ...
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... BD67929EFV ○VREG/5V regulator output terminal This terminal is the connection terminal of capacitor to stabilize the 5V output of internal regulator. It should be connected with the capacitor (0.01µF-1µF) to the ground. This terminal is used as the regulator to the Hall element too. The road current should be within 20mA. ○PROCLK/Connection terminal of a capacitor to set the clock cycle for protection This terminal is the connection terminal of capacitor to set the time of detection. The period of PROCLK=C× ...
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... BD67929EFV ○GND/Ground terminal In order to reduce the noise caused by switching current and to stabilize the internal reference voltage of IC, please wire in such a way that the wiring impedance from this terminal is made as low as possible to achieve the lowest electrical potential no matter what operating state it may be. ...
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... BD67929EFV ●Servo and PLL This IC synchronizes the phase of the reference CLK signal and the internal three-phase synthesized FG in motor RPM control. In the control system, the rising of the FG signal and the falling of CLK signal are monitored and the phase comparison of the two signals is made. The output signal after the phase comparison is smoothed by the active filter with the above INT amplifier used to determine the torque of the motor ...
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... BD67929EFV ●Protection Circuits ○Thermal Shutdown (TSD) This IC has a built-in thermal shutdown circuit for thermal protection. When the IC's chip temperature rises above 175℃ (Typ.), the motor output becomes OPEN. Also, when the temperature returns to under 150℃(Typ.), it automatically returns to normal operation. However, even when TSD is in operation, if heat is continued to be added externally, heat overdrive can lead to destruction. ○ ...
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... BD67929EFV ●Power Consumption Please confirm that the IC's chip temperature Tj is not over 150℃, while considering the IC's power consumption (W), package power (Pd) and ambient temperature (Ta). When Tj is exceeded 150℃, the functions as a semiconductor do not operate and problems such as parasitism and leaks occur. Constant use under these circumstances leads to deterioration and eventually destruction of the IC. Tjmax=150℃ ...
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... BD67929EFV ●Power Dissipation ○HTSSOP-B28 Package HTSSOP-B28 has exposed metal on the back, and it is possible to dissipate heat from a through hole in the back. Also, the back of board as well as the surfaces has large areas of copper foil heat dissipation patterns, greatly increasing power dissipation. The back metal is shorted with the back side of the IC chip, being a GND potential, therefore there is a possibility for malfunction shorted with any potential other than GND, which should be avoided ...
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... BD67929EFV ●Notes for use (1) Absolute maximum ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses ...
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... BD67929EFV (12) Input terminal of IC This monolithic IC, and between each element there isolation foe element partition and a P substrate. This P layer and each element's N layer make up the P-N junction, and various parasitic elements are made up. For example, when the resistance and transistor are connected to the terminal as shown in figure, ○ ...
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... BD67929EFV ●Ordering part number Part No. Part No. HTSSOP-B28 9.7±0.1 (MAX 10.05 include BURR) (5. 1PIN MARK 0.625 S 0.08 S 0.65 +0.05 0.24 -0.04 0.08 M www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package EFV: HTSSOP-B28 <Tape and Reel information> Tape Embossed carrier tape (with dry pack) + 6° ...
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