BD6212FP-EVAL-N-ND datasheet, PDF

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BD6212FP-EVAL-N-ND: DescriptionPower Management IC Development Tools BD6212 Eval Brd; CategoryDevelopment board/suite/development tools; File Size639KB，8 Pages; ManufacturerROHM Semiconductor; Websitehttps://www.rohm.com/; Environmental Compliance

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BD6212FP-EVAL-N-ND Overview

Power Management IC Development Tools BD6212 Eval Brd

BD6212FP-EVAL-N-ND Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	ROHM Semiconductor
Product Category	Power Management IC Development Tools
RoHS	Details
Product	Evaluation Boards
Type	Motor / Motion Controllers & Drivers
Tool Is For Evaluation Of	BD6212FP
Input Voltage	3 V to 5.5 V
Packaging	Bulk
Output Current	2 A
For Use With	BD6212FP
Maximum Operating Temperature	+ 85 C
Minimum Operating Temperature	- 25 C
Factory Pack Quantity	1

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ROHM Motor Driver IC Solutions

Evaluation Board:

H-Bridge Motor Drivers

For DC Brush Motors

BD6212FP, BD6222FP, BD6232FP (2A / 5.5V, 15V, 32V)

●Introduction

This application note will provide the steps necessary to operate and evaluate ROHM’s H-Bridge motor drivers using the BD62x2 evaluation

board. DC brush motors are increasingly required for a broad range of applications. DC brush motor is preferred due to their simplicity,

reliability and low cost. H-bridge driver ICs control the motor’s direction, speed, braking and idling.

No.0000000012

●Description

This evaluation board has been developed for ROHM’s H-Bridge driver customers evaluating the BD62x2FP series. The BD62x2FP series

can operate across a wide range of power supply voltages (from 3V to 32V max), supporting output currents of up to 2A. PWM signal

control (20 kHz-100 kHz) or VREF control modes are used to vary motor rotation speeds. ROHM’s ICs are complete with over current

protection (OCP), over voltage protection (OVP), thermal shutdown (TSD) and under voltage lock out (UVLO) protection circuits while also

facilitating a low-power consumption design (10µA max). Overlap (shoot-through) protection to prevent high currents during motor reversal

or breaking is also built in. In addition, the devices are designed to withstand up to 4 kV ESD.

●H-Bridge

Motor Driver Operation Modes

a) Stand-by mode

b) Forward mode

c) Reverse mode

d) Brake mode

e) Forward PWM control mode

f) Reverse PWM control mode

g) Forward VREF control mode

h) Reverse VREF control mode

●Applications

VCR; CD/DVD players; A/V equipment; optical disc drives; PC peripherals; car audio; car navigation systems; office automation equipment

●Evaluation

Board Operating Limits and Absolute Maximum Ratings

Limit

Parameter

Supply Voltage

BD6212

BD6222

BD6232

VREF Voltage

BD6212

BD6222

BD6232

Electrical Characteristics

Max.Output Current

VREF bias current

Output

Frequency

Input

Range

Carrier

IOMAX

IVREF

FPWM

FMAX

ISTBY

-10

100

µA

kHz

µA

VREF = Vcc

BD6212 / BD6222 / BD6232 =>

VREF = 3.75V / 9V / 18V

FIN / RIN

Stand-by

VREF

1.5

5.5

VCC

5.5

Symbol

MIN

TYP

MAX

Unit

Conditions

Frequency

Stand-by current

Application Note

Forward PWM control mode

a) VREF is connected to VCC and RIN is a low input (<0.8V), selected through SW1. R5 is disconnected by opening

the jumper connection, SW2 is set to H position and a PWM signal with a frequency range between 20-100kHz with

an amplitude range same as that of VCC is given to FIN.

b) The speed of the motor can be controlled by varying the duty cycle of the input PWM signal. OUT1 pin is high and

OUT2 pin toggles between low and high impedance states. The motor which is connected between OUT1 and

OUT2 rotates in the forward (clockwise) direction. A path for the recovery current from the motor is established by

the 10µF bypass capacitor connected between VCC and GND as shown in Figure 1.

Reverse PWM control mode

a) VREF is connected to VCC and FIN is a low input (<0.8V), selected through SW2. R4 is disconnected by opening

the jumper connection, SW1 is set to H position and a PWM signal with a frequency range between 20-100kHz with

an amplitude range same as that of VCC is given to RIN.

b) The speed of the motor can be controlled by varying the duty cycle of the input PWM signal. OUT2 pin is high and

OUT1 pin toggles between low and high impedance states. The motor which is connected between OUT1 and

OUT2 rotates in the reverse (anti-clockwise) direction. A path for the recovery current from the motor is established

by the 10µF bypass capacitor connected between VCC and GND as shown in Figure 1.

Forward VREF control mode

a) FIN is a high input (>2V) and RIN is a low input (<0.8V) and are selected through SW2 and SW1 respectively. The

speed of the motor can be controlled by the VREF voltage given through a potentiometer connection varying

between VCC and ground as shown in the schematic.

b) OUT1 pin is high and OUT2 pin toggles between the low and high and the motor which is connected between

OUT1 and OUT2 rotates in the forward (clockwise) direction. The duty conversion circuit provides the switching

duty corresponding to the voltage levels of the VREF and VCC pins.

c) The on duty is represented by the following equation in this mode,

½½½½

(½)

½½½

(½)

VI.

VII.

The switching on duty is limited by the range of VREF pin voltage. The PWM output carrier frequency in this mode

is 25kHz (nominal). A path for the recovery current from the motor is established by the 10µF bypass capacitor

connected between VCC and ground as shown in Figure 1.

VIII.

Reverse VREF control mode

a) RIN is a high input (>2V) and FIN is a low input (<0.8V) and are selected through SW1 and SW2 respectively. The

speed of the motor can be controlled by the VREF voltage given through a potentiometer connection varying

between VCC and ground as shown in the schematic.

b) OUT2 pin is high and OUT1 pin toggles between the low and high and the motor which is connected between

OUT1 and OUT2 rotates in the reverse (anti-clockwise) direction. The duty conversion circuit provides the switching

duty corresponding to the voltage levels of the VREF and VCC pins.

c) The on duty is represented by the following equation in this mode,

½½½½

(½)

½½½

(½)

The switching on duty is limited by the range of VREF pin voltage. The PWM output carrier frequency in this mode

is 25kHz (nominal). A path for the recovery current from the motor is established by the 10µF bypass capacitor

connected between VCC and ground as shown in Figure 1.

Page

BD6212FP-EVAL-N-ND Related Products

	BD6212FP-EVAL-N-ND	BD6232FP-EVAL-N-ND
Description	Power Management IC Development Tools BD6212 Eval Brd	Power Management IC Development Tools BD6232 Eval Brd
Product Attribute	Attribute Value	Attribute Value
Manufacturer	ROHM Semiconductor	ROHM Semiconductor
Product Category	Power Management IC Development Tools	Power Management IC Development Tools
RoHS	Details	Details
Product	Evaluation Boards	Evaluation Boards
Type	Motor / Motion Controllers & Drivers	Motor / Motion Controllers & Drivers
Tool Is For Evaluation Of	BD6212FP	BD6232FP
Input Voltage	3 V to 5.5 V	6 V to 32 V
Packaging	Bulk	Bulk
Output Current	2 A	2 A
For Use With	BD6212FP	BD6232FP
Maximum Operating Temperature	+ 85 C	+ 85 C
Minimum Operating Temperature	- 25 C	- 25 C
Factory Pack Quantity	1	1

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