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PDF BD62220AEFV Data sheet ( Hoja de datos )
| Número de pieza | BD62220AEFV | |
| Descripción | DC Brush Motor Drivers | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Driver IC for PPC
High Performance, High Reliability
36V 2ch DC Brush Motor Drivers
for PPC's etc.
BD62220AEFV
General Description
BD62220AEFV is a built-in 2 channel H-bridge motor
driver for 2 DC brush motors or 1 stepper motor. This
driver can facilitate low power consumption by direct
PWM or PWM constant current control. There are built in
protection circuits in this IC. It is possible to output an
abnormal detection signal for Wired-OR that notifies each
protection circuit operation, which contributes to set high
reliability.
Features
Single Power Supply Input (rated voltage of 36V)
Rated Output Current (peak): 2.0A(2.8A)
Low ON-Resistance DMOS Output
Forward, Reverse, Brake, Open
Power Save Function
External PWM Control
PWM Constant Current Control (current limit function)
Built-in Spike Noise Cancel Function (external noise
filter is unnecessary)
Driver for 2 DC Brush Motor
Driver for 1 Stepper motor
FULL STEP, HALF STEP (driving stepper motor)
µSTEP Drive by External DAC (driving stepper motor)
Built-in logic input pull-down resistor
Cross-conduction Prevention Circuit
Output detection signal during abnormal states
(Wired-OR)
Thermal Shutdown Circuit (TSD)
Over-current Protection Circuit (OCP)
Under Voltage Lock out Circuit (UVLO)
Over Voltage Lock out Circuit (OVLO)
Ghost Supply Prevention (protects against malfunction
when power supply is disconnected)
Adjacent Pins Short Protection
Inverted Mounting Protection
Microminiature, ultra-thin and high heat-radiation
(exposed metal type) HTSSOP-B28 package
Application
Plain Paper Copier (PPC), Multi-function Printer, Laser
Printer, Inkjet Printer, Photo Printer, FAX, Mini Printer and
etc.
Key Specifications
Power Supply Voltage Range:
Rated Output Current:
Rated Output Current (Peak):
Operating Temperature Range:
Output ON-Resistance:
(Total of upper and lower resistors)
8 to 28 [V]
2.0 [A]
2.8 [A]
-25 to +85 [°C]
0.65 [Ω] (Typ)
Package
W(Typ) x D(Typ)x H(Max)
HTSSOP-B28
9.70mm x 6.40mm x 1.00mm
Figure 1
Typical Application Circuit
9 GND
IN1A 16
IN1B 17
IN2A 19
IN2B 20
VREF1 11
VREF2 12
CR 10
TEST2 18
14
TEST1
13 PS
15 FAILA
7 VCC1
5 OUT1A
2
OUT1B
3
RNF1
RNF1S
4
22 VCC2
24 OUT2A
27 OUT2B
26
RNF2
25 RNF2S
GND
1
Figure 2. Typical Application Circuit
○Product structure：silicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays.
1/21
TSZ02201-0P2P0B301460-1-2
21.Jun.2016 Rev.001
1 page  
BD62220AEFV
Application Information
1. Points to Notice for Terminal Description and PCB Layout
(1) PS/ Power Save Terminal
PS can make circuit into standby state and make motor outputs OPEN.
Please be careful because there is a delay of 40μs (max) before it returns from OFF state to normal state.
PS State
L POWER SAVE (STANDBY)
H ACTIVE
(2) IN1A,I N1B, IN2A, IN2B/ H Bridge Control Terminal
It decides output logic for H bridge.
Input
Output
PS
IN1A
IN2A
IN1B
IN2B
OUT1A
OUT2A
OUT1B
OUT2B
LX
X
OPEN
OPEN
HL
L
OPEN
OPEN
HH L H L
HL H L H
HH
H
L
L
X: H or L
State
POWER SAVE (STANDBY)
STOP
FORWARD
REVERSE
BRAKE
(3) TEST1,TEST2/ Terminal for Testing
This is the terminal used at the time of distribution test. Please connect to GND. Please be careful because there is a
possibility of malfunction if it is not connected to GND.
(4) VCC1,VCC2/ Power Supply Terminal
Motor’s drive current is flowing in it, so please connect it in such a way that the wire is thick & short and has low
impedance. VCC voltage may have great fluctuation, so please connect the bypass capacitor (100uF to 470uF) as
close as possible to the terminal. Adjust in such a way that the VCC voltage is stable. Please increase the
capacitance if needed, especially when large current or motors that have great back electromotive force are used. In
addition, to reduce the power supply’s impedance in wide frequency bandwidth, parallel connection of multi-layered
ceramic capacitor (0.01µF to 0.1µF) is recommended. Extreme care must be observed to make sure that the VCC
voltage does not exceed the rating even for a moment. VCC1 & VCC2 are shorted inside IC, so please be sure to
short VCC1 & VCC2 externally when using. If used without shorting, malfunction or destruction may occur because of
concentration of current routes etc., so please make sure that they are shorted when in use. Moreover, there is a
built-in clamp component in the output terminal to prevent electrostatic destruction. If sudden pulse or surge voltage
of more than the maximum absolute rating is applied, the clamp component operates which can result to destruction.
Please be sure to not exceed the maximum absolute rating. It is effective to mount a Zener diode with maximum
absolute rating. Also, diode is inserted between VCC terminal and GND terminal to prevent electrostatic destruction.
If reverse voltage is applied between VCC terminal and GND terminal, there is a danger of IC destruction so please
be careful.
(5) GND/ Ground Terminal
In order to reduce the noise caused by switching current and to stabilize the internal reference voltage of IC, please
connect it 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.
(6) OUT1A,OUT1B,OUT2A,OUT2B/ H Bridge Output Terminal
Motor’s drive current is flowing in it, so please connect it in such a way that the wire is thick & short and has low
impedance. It is also effective to add a Schottky diode if output has great positive or negative fluctuation when large
current is applied. For example, a counter electromotive voltage etc. is great. Moreover, there is a built-in clamp
component in the output terminal to prevent electrostatic destruction. If sudden pulse or surge voltage of more than
the maximum absolute rating is applied, the clamp component operates which can result to destruction. Please be
sure to not exceed the maximum absolute rating.
(7) RNF1,RNF2/ Connection Terminal of Resistor for Detecting of Output Current
Please connect the resistor of 0.1Ω to 0.3Ω for current detection between this terminal and GND according to
application circuits (Figure 3,4) and consider the power consumption of the current-detecting resistor. Determine the
resistor in such a way that W=IOUT2･R[W] does not exceed the power dissipation of the resistor. In addition, please
connect it in such a way that it has low impedance and does not have impedance in common with other GND
patterns. This is because motor’s drive current flows in the pattern through RNF terminal to current-detecting resistor
to GND. Please do not exceed the rating because there is the possibility of circuits’ malfunction etc. if the RNF
voltage has exceeded the maximum rating (0.7V). Moreover, please be careful not to short RNF terminal to GND
because there is the danger that OCP or TSD will operate when large current flows without normal PWM constant
current control.. However, if RNF terminal is open, there is also the possibility of malfunction because output current
does not flow either. Please do not let it open.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/21
TSZ02201-0P2P0B301460-1-2
21.Jun.2016 Rev.001
5 Page 
BD62220AEFV
5. µSTEP Drive for Stepper Motor
Output current of channel 1 and channel 2 can be determined by VREF1, VREF2. Output logic can be done by IN1A,
IN1B, IN2A, IN2B. Therefore, linear voltage input by external DAC to VREF1, VREF2 enables to drive stepper motor in
µSTEP mode.
IN1A
IN1B
IN2A
IN2B
VREF1
VREF2
OUT(ch1)
OUT(ch2)
Figure 9. µSTEP Control Sequence and Output Current
6. Power Dissipation
Please confirm that the IC’s chip temperature Tj is not over 150°C. Consider the IC’s power consumption (W), package
power (Pd) and ambient temperature (Ta). When Tj=150°C is exceeded, the functions as a semiconductor do not
operate and problems such as parasitic and leaks occur. Constant use under these conditions leads to deterioration and
eventually destruction of the IC. Tjmax=150°C must be strictly obeyed under all circumstances.
(1) Thermal Calculation
The IC’s consumed power can be estimated roughly with the power supply voltage (VCC), circuit current (ICC), output
ON-Resistance (RONH, RONL) and motor output current value (IOUT).
The calculation method during external PWM drive, SLOW DECAY, driving channel 1 only is shown here:
When using both channel 1 and channel 2, calculate for each H bridge.
Consumed power of the VCC [W] = VCC [V]⋅ICC [A] ･･･････①
Consumed power of the output DMOS [W] = (RONH[W] + RONL[W]) ⋅ IOUT[A]2 ⋅ on _ duty[%]/ 100
During output ON
(2 ⋅ RONL[W])⋅ IOUT[A]2 ⋅ (100 − on _ duty[%]/ 100) ･･･②
During current decay
However, on duty: PWM on duty [%]
Model Number
Upper P-Channel DMOS
ON-Resistance RONH[Ω] (Typ)
BD62220AEFV
0.4
Lower N-Channel DMOS
ON-Resistance RONL[Ω] (Typ)
0.25
Consumed total power of IC W_total [W] = ① + ②
Junction temperature Tj = Ta[°C] + θja[°C / W] ⋅ W _ total[W]
However, the thermal resistance value θja [°C/W] differs significantly depending on circuit board conditions. Refer to the
Power Dissipation curve on page 14. Also, we are taking measurements of thermal resistance value θja of the actual
boards used. Please feel free to contact our salesman. The calculated values above are only theoretical. For actual
thermal design, please perform sufficient thermal evaluation for the application board used, and create the thermal design
with enough margin to not exceed Tjmax=150°C. Although not normally used, if the IC is to be used under specific or
strict heat conditions, please consider attaching an external Schottky diode between the motor output terminal and GND
to decrease heat from the IC.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/21
TSZ02201-0P2P0B301460-1-2
21.Jun.2016 Rev.001
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet BD62220AEFV.PDF ] | |
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