NEC UPD16814GS Datasheet

DATA SHEET

MOS INTEGRATED CIRCUIT

µ

PD16814

MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT

DESCRIPTION

The µPD16814GS is a monolithic dual H bridge driver circuit employing a power MOS FET for its driver stage. By
complementing the P channel and N channel of the output stage, the circuit current is substantially improved as
compared with that of the conventional charge pump driver.

Because the dual H bridge driver circuits at the output stage are independent of each other, this IC is ideal as the
driver circuit for a 1- to 2-phase excitation bipolar driving stepping motor for the head actuator of an FDD.

FEATURES

• Low ON resistance (sum of ON resistance of top and bottom FETs)

ON1 = 2.0 Ω TYP.

R

• Low current consumption: IDD = 100 µA MAX.

• Four input modes independently controlling dual H bridge drivers

• Stop and Brake modes selectable

• Surface-mount mini-mold package: 16-pin plastic SOP (300 mil)

PIN CONFIGURATION (Top View)

V

M1

1A

PGND

1

2A

V

DD

IN

1

IN

3

IN

2

ORDERING INFORMATION

Part Number Package

µ

PD16814GS 16-pin plastic SOP (300 mil)

1

2

3

4

5

6

7

8

µ

PD16814GS

16

15

14

13

12

11

10

9

NC

1B

PGND

2B

V

M2

SEL

IN

4

DGND

2

The information in this document is subject to change without notice.

Document No. S10112EJ4V0DS00 (4th edition)
Date Published August 1997 N
Printed in Japan

©

1997

BLOCK DIAGRAM

6IN

1

8IN

2

11SEL

7IN

3

10IN

4

CONTROL
CIRCUIT 1

CONTROL
CIRCUIT 2

µ

PD16814

V

DD

5

V

M

V

M1

“H”

BRIDGE 1

“H”

BRIDGE 2

1

2

15

3

12

4

13

1A

1B

PGND

M2

V

2A

2B

1

+

9DGND 14

FUNCTION TABLE

• In Stop mode (SEL = High)

Excitation Direction

—— LLLLSS

H2R LLLHSR
H2FLLHLSF

—— L L H H S S

H1RLHLLRS
<3> L H L H R R
<2> L H H L R F
H1R LHHHRS
H1F HLLLFS
<4> H L L H F R
<1> HLHLFF
H1FHLHHFS

—— H H L L S S

H2RHHLHSR
H2F HHHLSF

—— HHHHSS

IN1 IN2 IN3 IN4 H1 H2

PGND

2

H

1

F

<4><

2

RH

H

<

><

3

H

1

R

>

1

2

F

>

2

2

• In Brake mode (SEL = Low)

µ

PD16814

Excitation Direction

IN1 IN2 IN3 IN4 H1 H2

—— LLLLBB

H2R LLLHBR
H2FLLHLBF

—— L L H H B B

H1RLHLLRB
<3> L H L H R R
<2> L H H L R F
H1R LHHHRB
H1F HLLLFB
<4> H L L H F R
<1> HLHLFF
H1FHLHHFB

—— H H L L B B

H2RHHLHBR
H2F HHHLBF

—— HHHHBB

F: Forward R: Reverse S: Stop B: Brake

FORWARD

V

M

ON

AB

OFF

OFF

ON

REVERSE

V

M

OFF

AB

ON

ON

OFF

STOP

V

M

OFF

AB

OFF

OFF

OFF

BRAKE

V

M

OFF

AB

ON

OFF

ON

3

ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)

Parameter Symbol Ratings Unit
Supply voltage (motor block) VM –0.5 to +7 V
Supply voltage (control block) VDD –0.5 to +7 V
Power dissipation Pd1 0.862

Pd2 1.087
Instantaneous H bridge driver current ID (pulse) ±1.0
Input voltage VIN –0.5 to VDD + 0.5 V
Operating temperature TA 0 to 60 °C
Junction temperature Tj MAX. 150 °C
Storage temperature Tstg –55 to +125 °C

Note 1

Note 2

Note 2,3

Notes1. IC alone.

2. When mounted on board (100 × 100 × 1 mm, glass epoxy)

3. t ≤ 5 ms, Duty ≤ 40%

µ

PD16814

W

A

1.2
When mounted
on board

1.0

IC alone

0.8

(W)

d

0.6

0.4

Average power dissipation P

0.2

d

vs. TA Characteristics

P

0

20 40 60 80

A

Ambient temperature T

(°C)

4