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PDF BD6215 Data sheet ( Hoja de datos )

Número de pieza BD6215
Descripción H-bridge drivers
Fabricantes ROHM Semiconductor 
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No Preview Available ! BD6215 Hoja de datos, Descripción, Manual

For brush motors
H-bridge drivers
(7V max.)
BD6210, BD6211, BD6212, BD6215, BD6216, BD6217
No.09007ECT01
Overview
These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a wide range of power
supply voltages (from 3V to 36V), supporting output currents of up to 2A. MOS transistors in the output stage allow for
PWM signal control, while the integrated VREF voltage control function of previous models offers direct replacement of
deprecated motor driver ICs. These highly efficient H-bridge driver ICs facilitate low-power consumption design.
Features
1) Built-in, selectable one channel or two channels configuration
2) Low standby current
3) Supports PWM control signal input (20kHz to 100kHz)
4) VREF voltage setting pin enables PWM duty control
5) Cross-conduction prevention circuit
6) Four protection circuits provided: OCP, OVP, TSD and UVLO
Applications
VCR; CD/DVD players; audio-visual equipment; optical disc drives; PC peripherals;
car audios; car navigation systems; OA equipments
Line up matrix
Rating voltage
Channels
1ch
7V
2ch
0.5A
BD6210
HFP / F
BD6215
FP
1ch
18V
2ch
BD6220
HFP / F
BD6225
FP
1ch
36V
2ch
BD6230
HFP / F
BD6235
FP
*Packages; F:SOP8, HFP:HRP7, FP:HSOP25, FM:HSOP-M28
Maximum output current
1.0A
BD6211
HFP / F
BD6216
FP / FM
BD6221
HFP / F
BD6226
FP / FM
BD6231
HFP / F
BD6236
FP / FM
2.0A
BD6212
HFP / FP
BD6217
FM
BD6222
HFP / FP
BD6227
FM
BD6232
HFP / FP
BD6237
FM
www.rohm.com
c 2009 ROHM Co., Ltd. All rights reserved.
1/16
2009.08 - Rev.C

1 page




BD6215 pdf
BD6210, BD6211, BD6212, BD6215, BD6216, BD6217
Block diagram and pin configuration
BD6210F / BD6211F
Technical Note
VREF 6
FIN 4
RIN 5
DUTY
PROTECT
3 VCC
2 VCC
CTRL
1
OUT1
7
OUT2
Fig.25 BD6210F / BD6211F
8 GND
OUT1
VCC
VCC
FIN
GND
OUT2
VREF
RIN
Table 1 BD6210F/BD6211F
Pin Name
Function
1 OUT1 Driver output
2
VCC
Power supply
3
VCC
Power supply
4 FIN Control input (forward)
5 RIN Control input (reverse)
6 VREF Duty setting pin
7 OUT2 Driver output
8
GND
Ground
Note: Use all VCC pin by the same voltage.
Fig.26 SOP8
BD6210HFP / BD6211HFP / BD6212HFP
VREF 1
FIN 3
RIN 5
DUTY
PROTECT
CTRL
FIN
GND
2
OUT1
7 VCC
6
OUT2
4 GND
Fig.27 BD6210HFP / BD6211HFP / BD6212HFP
Table 2 BD6210HFP/BD6211HFP/BD6212HFP
Pin Name
Function
1 VREF Duty setting pin
2 OUT1 Driver output
3 FIN Control input (forward)
4
GND
Ground
5 RIN Control input (reverse)
6 OUT2 Driver output
7
VCC
Power supply
FIN
GND
Ground
Fig.28 HRP7
www.rohm.com
c 2009 ROHM Co., Ltd. All rights reserved.
5/16
2009.08 - Rev.C

5 Page





BD6215 arduino
BD6210, BD6211, BD6212, BD6215, BD6216, BD6217
Technical Note
i) j) VREF control mode
The built-in VREF-switching on duty conversion circuit provides switching duty corresponding to the voltage of the
VREF pin and the VCC voltage. The function offers the same level of control as the high voltage output setting
function in previous models. The on duty is shown by the following equation.
DUTY VREF [V] / VCC [V]
For example, if VCC voltage is 5V and VREF pin voltage is 3.75V, the switching on duty is about 75 percent.
However, please note that the switching on duty might be limited by the range of VREF pin voltage (Refer to the
operating conditions, shown on page 2). The PWM carrier frequency in this mode is 25kHz (nominal), and the
switching operation is the same as it is the PWM control modes. When operating in this mode, do not input the
PWM signal to the FIN and RIN pins. In addition, establish a current path for the recovery current from the motor, by
connecting a bypass capacitor (10µF or more is recommended) between VCC and ground.
VCC
VREF
0
FIN
RIN
OUT1
OUT2
Fig.42 VREF control operation (timing chart)
2) Cross-conduction protection circuit
In the full bridge output stage, when the upper and lower transistors are turned on at the same time, and this condition
exists during the period of transition from high to low, or low to high, a rush current flows from the power supply to
ground, resulting in a loss. This circuit protects against the rush current by providing a dead time (about 400ns,
nominal) at the transition.
3) Output protection circuits
a) Under voltage lock out (UVLO) circuit
To secure the lowest power supply voltage necessary to operate the controller, and to prevent under voltage
malfunctions, a UVLO circuit has been built into this driver. When the power supply voltage falls to 2.3V (nominal) or
below, the controller forces all driver outputs to high impedance. When the voltage rises to 2.5V (nominal) or above,
the UVLO circuit ends the lockout operation and returns the chip to normal operation.
b) Over voltage protection (OVP) circuit
When the power supply voltage exceeds 7.3V (nominal), the controller forces all driver outputs to high impedance.
The OVP circuit is released and its operation ends when the voltage drops back to 6.8V (nominal) or below. This
protection circuit does not work in the stand-by mode. Also, note that this circuit is supplementary, and thus if it is
asserted, the absolute maximum rating will have been exceeded. Therefore, do not continue to use the IC after this
circuit is activated, and do not operate the IC in an environment where activation of the circuit is assumed.
www.rohm.com
c 2009 ROHM Co., Ltd. All rights reserved.
11/16
2009.08 - Rev.C

11 Page







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