ROHM BD62321HFP Technical data

H-bridge Drivers for Brush Motors

H-bridge Drivers High current series

BD62231HFP

●Description

BD62321HFP is full bridge driver for brush motor applications. This IC can operate at a wide range of power-supply voltages (from 6V to 32V), supporting output currents of up to 3A. MOS transistors in the output stage allow for PWM signal control. The replacement is also easy because of the pin compatible with BD623XHFP series.

●Features

1) Built-in one channel driver

2) Low standby current

3) Supports PWM control signal input (20kHz to 100kHz)

4) Cross-conduction prevention circuit

5) Four protection circuits provided: OCP, OVP, TSD, UVLO and SAP

●Applications

VCR; CD/DVD players; audio-visual equipment; optical disc drives; PC peripherals;OA equipments

●Absolute maximum ratings (Ta=25℃, All voltages are with respect to ground)

Parameter Symbol Ratings Unit

Supply voltage VCC 36 V

Output current I

3.0 *1 A

OMAX

No.11007EBT05

All other input pins VIN -0.3 ~ VCC V

Operating temperature T

Storage temperature T

Power dissipation Pd 1.4 *2 W

Junction temperature T

*1 Do not, exceed Pd or ASO. *2 HRP7 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 11.2mW/℃ above 25℃.

●Operating conditions (Ta=25℃)

Parameter Symbol Ratings Unit

Supply voltage VCC 6 ~ 32 V

-40 ~ +85 ℃

OPR

-55 ~ +150 ℃

STG

150 ℃

jmax

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2011.12 - Rev.B

BD62321HFP

●Electrical characteristics (Unless otherwise specified, Ta=25℃ and VCC=24V)

Limits

Parameter Symbol

Unit Conditions

Min. Min. Min.

Supply current ICC 0.7 1.4 2.2 mA Forward / Reverse / Brake

Technical Note

Stand-by current I

- 0 10 µA Stand-by

STBY

Input high voltage VIH 2.0 - - V

Input low voltage VIL - - 0.8 V

Input bias current IIH 30 50 100 µA VIN=5.0V

Output ON resistance RON 0.5 1.0 1.5 Ω IO=1.0A, vertically total

Input frequency range F

20 - 100 kHz FIN / RIN

MAX

●Block diagram and pin configuration

BD62321HFP

1 VCC

FIN

RIN

3

5

Fig.1 BD62321HFP

CTRL

FIN

GND

PROTECT

OUT1 OUT2

6 2

Table 1 BD62321HFP

VCC

7

Pin Name Function

1 VCC Power supply

2 OUT1 Driver output

GND

4

3 FIN Control input (forward)

4 GND Ground

5 RIN Control input (reverse)

6 OUT2 Driver output

7 VCC Power supply

FIN GND Ground

Note: Use all VCC pin by the same voltage.

VCC

OUT1

FIN

GND

RIN

OUT2

VCC

Fig.2 HRP7 package

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2011.12 - Rev.B

BD62321HFP

]

Technical Note

●Electrical characteristic curves (Reference data)

2.0

1.5

1.0

Circuit Current: Icc [mA

0.5 6 1218243036

Supply Voltag e: Vcc [V]

Fig.3 Supply current Fig.4 Stand-by current Fig.5 Input threshold voltage

1.0

0.8

85°C 25°C

-40° C

85°C 25°C

-40° C

0.6

0.4

Input Bias Current: I IH [mA]

0.2

0.0 0 6 12 18 24 30 36

Input Voltag e: VIN [V]

Fig.6 Input bias current Fig.7 Under voltage lock out Fig.8 Over voltage protection

3

2.5

2

1.5

85°C 25°C

-40° C

8

A]



6

4

2

Stand-by Current: ISTBY [

0

6 1218243036

Supply Vol tage: Vc c [V]

9

6

3

Internal signal: Release [V] _

0

4.5 5 5.5 6

Supply Vol tage: VC C [V]

2

1.5

1

-40° C 25°C 85°C

85°C 25°C

-40° C

25°C 85°C

1.5

1.0

-40°C 25°C 85°C

0.5

0.0

Internal Logic: H/L [-] _

-0.5

0.8 1.2 1.6 2

Input Vol tage: V IN [ V]

54

45

36

27

85°C 25°C

18

-40° C

9

Internal signal: Release [V] _

0

36 40 44 48

Supply Vol tage: VC C [V]

1.5

1.0

0.5

-40° C 25°C 85°C

85°C 25°C

-40°C

1

0.5

Output Voltage: V CC-VOUT [V]

0.5

Output Voltage:V CC- VOUT [V]

0.0

Internal Logic: H/L [-] _

0

00.511.522.53

Output Current: IOUT [A]

Fig.9 Output high voltage Fig.10 High side body diode Fig.11 Over current protection (H side)

3

2.5

2

1.5

1

Output Voltage: V OUT [V]

0.5

0

00.511.522.53

Output Current: IOUT [A]

85°C 25°C

-40° C

Fig.12 Output low voltage Fig.13 Low side body diode Fig.14 Over current protection (L side)

0

00.511.522.53

Output Current: IOUT [A]

2

1.5

1

0.5

Output Voltage: V OUT [V]

0

00.511.522.53

Output Current: IOUT [A]

-40°C 25°C 85°C

-0.5 4 4.2 4.4 4.6 4.8 5

Load Cur rent [A ]

1.5

1.0

0.5

0.0

Internal Logic: H/L [-] _

-0.5 4 4.2 4.4 4.6 4.8 5

Load Cur rent [A ]

85°C 25°C

-40° C

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2011.12 - Rev.B

BD62321HFP

Technical Note

●Functional descriptions

1) Operation modes

Table 2 Logic table

FIN RIN OUT1 OUT2 Operation

a L L Hi-Z* Hi-Z* Stand-by (idling)

b H L H L Forward (OUT1 > OUT2)

c L H L H Reverse (OUT1 < OUT2)

d H H L L Brake (stop)

e PWM L H

f L PWM

* Hi-Z is the off state of all output transistors. Please note that this is the state of the connected diodes, which differs from that of the mechanical relay.

__________

PWM

__________

PWM

Forward (PWM control)

H Reverse (PWM control)

a) Stand-by mode

In stand-by mode, all internal circuits are turned off, including the output power transistors. Motor output goes to high impedance. If the motor is running at the switch to stand-by mode, the system enters an idling state because of the body diodes. However, when the system switches to stand-by from any other mode (except the brake mode), the control logic remains in the high state for at least 50µs before shutting down all circuits.

b) Forward mode

This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is low. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2.

c) Reverse mode

This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is high. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1.

d) Brake mode

This operating mode is used to quickly stop the motor (short circuit brake). It differs from the stand-by mode because the internal control circuit is operating in the brake mode. Please switch to the stand-by mode (rather than the brake mode) to save power and reduce consumption.

OFF

M

OFF

ON

OFF

M

OFF

ON

OFF

ON

OFF

M

OFF

ON

M

a) Stand-by mode b) Forward mode c) Reverse mode d) Brake mode

Fig.15 Four basic operations (output stage)

OFF

ON

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2011.12 - Rev.B