Datasheet DCV010505DP-U, DCV010505DP, DCV012415DP-U, DCV012415DP, DCV012405P-U Datasheet (Burr Brown Corporation)

®

DCV01

DCV01

DCV01

For most current data sheet and other product

information, visit www.burr-brown.com

Miniature, 1W, 1500Vrms Isolated

UNREGULATED DC/DC CONVERTERS

FEATURES

● UP TO 85% EFFICIENCY

● THERMAL PROTECTION

● DEVICE-TO-DEVICE SYNCHRONIZATION

● SHORT CIRCUIT PROTECTION

● EN55022 CLASS B EMC PERFORMANCE

● UL1950 RECOGNIZED COMPONENT

● JEDEC PDIP-14 AND GULL-WING PACKAGES

Series

APPLICATIONS

● INDUSTRIAL CONTROL AND

INSTRUMENTATION

● POINT-OF-USE POWER CONVERSION

● GROUND LOOP ELIMINATION

● DATA ACQUISITION

● TEST EQUIPMENT

● SECONDARY ISOLATION CIRCUITS

DESCRIPTION

The DCV01 series is a family of 1W, 1500Vrms
isolated, unregulated, isolated DC/DC converters. Re­quiring a minimum of external components and in­cluding on-chip device protection, the DCV01 series
provides extra features such as output disable and
synchronization of switching frequencies.

The use of a highly integrated package design results
in highly reliable products with a power density of
40W/in3 (2.4W/cm3). This combination of features
high isolation and small size makes the DCV01 suit­able for a wide range of applications.

SYNC

OUT

800kHz

Oscillator

SYNC

IN

V

S

Power Controller IC

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©

2000 Burr-Brown Corporation PDS-1592A Printed in U.S.A. April, 2000

÷ 2

Reset

Watch-dog/

start-up

PSU

Thermal

Shutdown

V

Power

Stage

I

BIAS

0V

1

OUT

0V

DCV01

®

SPECIFICATIONS

At TA = +25°C, unless otherwise specified.

DCV01 SERIES
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT

Power 100% Full Load 0.97 W
Ripple O/P Capacitor = 1µF, 50% Load 20 mVp-p
Voltage vs Temp Room to Cold 0.046 %/°C

INPUT

Voltage Range on V

S

ISOLATION

Voltage 1s Flash Test 1.5 kVrms

LINE

Regulation 1 %/1% of V

SWITCHING/SYNCHRONIZATION

Oscillator Frequency (f
Sync Input Low 0 0.4 V

) Switching Frequency = f

OSC

Sync Input Current V
Disable Time 2 µs
Capacitance Loading on SYNC

Pin External 3 pF

IN

RELIABILITY

Demonstrated T

THERMAL SHUTDOWN

IC Temperature at Shutdown 150 °C
Shutdown Current 3mA

TEMPERATURE RANGE

Operating –40 +85 °C

INPUT OUTPUT LOAD NO LOAD BARRIER LEAKAGE

VOLTAGE (V) VOLTAGE (V) REGULATION (%) CURRENT (mA) EFFICIENCY (%) CAPACITANCE (pF) CURRENT (

V

S

V

NOM

75% LOAD

(2)

PRODUCT MIN TYP MAX MIN TYP MAX TYP MAX TYP TYP TYP TYP

DCV010505 4.5 5 5.5 4.75 5 5.25 19 31 20 80 3.6 0.9
DCV010505D 4.5 5 5.5 ±4.75 ±5 ±5.25 19 32 23 80 3.8 0.9
DCV010512 4.5 5 5.5 11.4 12 12.6 23 38 30 85 5.1 1.2
DCV010512D 4.5 5 5.5 ±11.4 ±12 ±12.6 19 37 40 82 4.0 1.0
DCV010515 4.5 5 5.5 14.25 15 15.75 30 50 34 84 3.8 0.9
DCV010515D 4.5 5 5.5 ±14.25 ±15 ±15.75 27 50 42 85 4.7 1.1
DCV011512D
DCV011515D
DCV012405
DCV012415D

(4)

13.5 15 16.5 ±11.4 ±12 ±12.6 11 39 19 78 4.2 1.0

(4)

13.5 15 16.5 ±14.25 ±15 ±15.75 12 39 20 79 4.2 1.0

(4)

21.6 24 26.4 4.75 5 5.25 13 23 14 77 3.8 0.9

(4)

21.6 24 26.4 ±14.25 ±15 ±15.75 12 35 17 76 5.3 1.3

NOTES: (1) During UL1950 recognition tests only, UL File #E199929. (2) 100% Load Current = 1W/V
Q3 2000.

Room to Hot 0.016 %/°C

–10 10 %

60s Test, UL1950

SYNC

= +55°C 75 FITS

A

10% TO 100% LOAD

(1)

/2 800 kHz

OSC

= +2V 75 µA

(3)

TYP. (3) Load regulation = (V

NOM

1.5 kVrms

I

Q

0% LOAD 100% LOAD V

at 10% – V

OUT

at 100%)/ V

OUT

C

ISO

= 750Vrms V

ISO

at 75%. (4) Scheduled availability

OUT

= 750Vrms

ISO

S

µ

A)

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

®

DCV01

2

ABSOLUTE MAXIMUM RATINGS

Input Voltage:

5V Input Models .................................................................................. 7V

15V Input Models.............................................................................. 18V

24V Input Models.............................................................................. 29V

Storage Temperature...................................................... –60°C to +125°C

Lead Temperature (soldering, 10s) ................................................. 270°C

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with

ELECTROSTATIC
DISCHARGE SENSITIVITY

appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ORDERING INFORMATION

Basic Model Number: 1W Product
Voltage Input:

5V In

Voltage Output:

5V Out
Dual Output:
Package Code:

P = PDIP-14

P-U = PDIP-14 Gull-Wing

DCV01

()

05

(D )

05

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.

PACKAGE/ORDERING INFORMATION

PACKAGE SPECIFIED

PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER
Single

DCV010505P DIP-14 010-1 –40°C to +85°C DCV010505P DCV010505P Rails
DCV010505P-U Gull-Wing-14 010-2 –40°C to +85°C DCV010505P-U DCV010505P-U/700 Tape and Reel
DCV010512P DIP-14 010-1 –40°C to +85°C DCV010512P DCV010512P Rails
DCV010512P-U Gull-Wing-14 010-2 –40°C to +85°C DCV010512P-U DCV010512P-U/700 Tape and Reel
DCV010515P DIP-14 010-1 –40°C to +85°C DCV010515P DCV010515P Rails
DCV010515P-U Gull-Wing-14 010-2 –40°C to +85°C DCV010515P-U DCV010515P-U/700 Tape and Reel
DCV012405P
DCV012405P-U

Dual

DCV010505DP DIP-14 010-1 –40°C to +85°C DCV010505DP DCV010505DP Rails
DCV010505DP-U Gull-Wing-14 010-2 –40°C to +85°C DCV010505DP-U DCV010505DP-U/700 Tape and Reel
DCV010512DP DIP-14 010-1 –40°C to +85°C DCV010512DP DCV010512DP Rails
DCV010512DP-U Gull-Wing-14 010-2 –40°C to +85°C DCV010512DP-U DCV010512DP-U/700 Tape and Reel
DCV010515DP DIP-14 010-1 –40°C to +85°C DCV010515DP DCV010515DP Rails
DCV010515DP-U Gull-Wing-14 010-2 –40°C to +85°C DCV010515DP-U DCV010515DP-U/700 Tape and Reel
DCV011512DP
DCV011512DP-U
DCV011515DP
DCV011515DP-U
DCV012415DP
DCV012415DP-U

NOTE: (1) Models with a slash (/ ) are available only in Tape and Reel in the quantities indicated (e.g., /700 indicates 700 devices per reel). Ordering 700 pieces
of “DCP010505BP-U/700” will get a single 700-piece Tape and Reel. (2) Scheduled availability Q3, 2000.

(2)

(2)

(2)

(2)

(2)

(2)

(2)

(2)

DIP-14 010-1 –40°C to +85°C DCV012405P DCV012405P Tape and Reel

Gull-Wing-14 010-2 –40°C to +85°C DCV012405P-U DCV012405P-U/700 Rails

DIP-14 010-1 –40°C to +85°C DCV011512DP DCV011512DP Rails
DIP-14 010-2 –40°C to +85°C DCV011512DP-U DCV011512DP-U/700 Tape and Reel

Gull-Wing-14 010-1 –40°C to +85°C DCV011515DP DCV011515DP Rails

DIP-14 010-2 –40°C to +85°C DCV011515DP-U DCV011515DP-U/700 Tape and Reel

Gull-Wing-14 010-1 –40°C to +85°C DCV012415DP DCV012415DP Rails

DIP-14 010-2 –40°C to +85°C DCV012415DP-U DCV012415DP-U/700 Tape and Reel

DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

(1)

MEDIA

®

3

DCV01

PIN CONFIGURATION (Single-DIP and Gull-Wing)

PIN CONFIGURATION (Dual-DIP and Gull-Wing)

Top View DIP

V
0V

1

S

2

14

SYNC

IN

DCV01

5

0V

6

+V

OUT

NC

7

8

SYNC

OUT

PIN DEFINITION (Single-DIP)

PIN # PIN NAME DESCRIPTION

1V
2 0V Input Side Common

S

5 0V Output Side Common
6+V
7 NC Not Connected
8 SYNC
14 SYNC

OUT

OUT

Voltage Input

+Voltage Out

Unrectified Transformer Output
Synchronization Pin

IN

Top View DIP

14

SYNC

IN

0V

1

V

S

2

DCV01D

5

0V

6

+V

OUT

–V

OUT

7

8

SYNC

OUT

PIN DEFINITION (Dual-DIP)

PIN # PIN NAME DESCRIPTION

1V
2 0V Input Side Common

S

5 0V Output Side Common
6+V
7–V
8 SYNC
14 SYNC

OUT
OUT

OUT

Voltage Input

+Voltage Out
–Voltage Out
Unrectified Transformer Output
Synchronization Pin

IN

®

DCV01

4

TYPICAL PERFORMANCE CURVES

DCV010512D V

OUT

vs LOAD

Load (%)

V

OUT

(V)

14.5

14.0

13.5

13.0

12.5

12.0

11.5

11.0

10.5

10.00
20 30 50 7060 80 90 1004010

+V

OUT

–V

OUT

DCV010515D V

OUT

vs LOAD

Load (%)

V

OUT

(V)

18

17

16

15

14

20 30 50 7060 80 90 1004010

+V

OUT

–V

OUT

At TA = +25°C, unless otherwise noted.

50
45
40
35
30
25
20

Ripple (mVp-p)

15
10

5
0

20 30 50 7060 80 90 1004010

85

80

75

70

OUTPUT RIPPLE vs LOAD (20MHz BW)

DCV010505

1µF Ceramic

4.7µF Ceramic
10µF Ceramic

Load (%)

DCV010512D EFFICIENCY vs LOAD

65

Efficiency (%)

60

55

50

20 30 50 7060 80 90 1004010

Load (%)

90
85
80
75
70
65

Efficiency (%)

60
55
50

20 30 50 7060 80 90 1004010

(V)

OUT

V

5.60

5.50

5.40

5.30

5.20

5.10

5.00

4.90

4.80

Load (%)

DCV010515D EFFICIENCY vs LOAD

5

20 30 6050 70 80 1004010

DCV012405 V

Load (%)

vs LOAD

OUT

DCV01

®

TYPICAL PERFORMANCE CURVES (Cont.)

DCV010505

CONDUCTED EMISSIONS (125% Load)

Emission Level, Peak (dBµA)

Frequency (MHz)

10.15 10 30

60
50
40
30
20
10

0
–10
–20

At TA = +25°C, unless otherwise noted.

90
80
70
60
50
40

Efficiency (%)

30
20
10

0

DCV012405 EFFICIENCY vs LOAD

20 30 7060 80 90 10040 5010

Load (%)

Emission Level, Peak (dBµA)

CONDUCTED EMISSIONS (8% Load)

DCV010505

60
50
40
30
20
10

0
–10
–20

10.15 10 30
Frequency (MHz)

®

DCV01

6

FUNCTIONAL DESCRIPTION

OVERVIEW

The DCV01 offers up to 1W of unregulated output power
with a typical efficiency of up to 85%. This is achieved
through highly integrated packaging technology and the
implementation of a custom power stage and control IC. The
circuit design utilizes an advanced BiCMOS/DMOS pro­cess. Separate primary and secondary transformer windings
give good isolation and low barrier capacitance.

POWER STAGE

This uses a push-pull, center-tapped topology switching at
400kHz (divide by 2 from 800kHz oscillator).

OSCILLATOR AND WATCHDOG

The onboard 800kHz oscillator generates the switching
frequency via a divide by 2 circuit. The oscillator can be
synchronized to other DCV01 circuits or an external source,
and is used to minimize system noise.

A watchdog circuit checks the operation of the oscillator
circuit. The oscillator can be stopped by pulling the SYNC
pin LOW. The output pins will be tri-stated. This will occur
in 2µs.

THERMAL SHUTDOWN

The DCV01 is protected by a thermal shutdown circuit. If the
on-chip temperature exceeds 150°C, the device will shut
down. Once the temperature falls below 150°C, normal
operation will resume.

SYNCHRONIZATION

In the event that more than one DC/DC converter is needed
onboard, beat frequencies and other electrical interference
can be generated. This is due to the small variations in
switching frequencies between the DC/DC converters.

The DCV01 overcomes this by allowing devices to be
synchronized to one another. Up to eight devices can be
synchronized by connecting the SYNCIN pins together, tak­ing care to minimize the capacitance of tracking. Stray
capacitance (> 3pF) will have the effect of reducing the

switching frequency, or even stopping the oscillator circuit.
If synchronized devices are used, it should be noted that, at

start up, all devices will draw maximum current simulta­neously. This can cause the input voltage to dip and should
it dip below the minimum input voltage (4.5V), the devices
may not start up. A 2.2µF capacitor should be connected
close to the input pins.

If more than eight devices are to be synchronized, it is
recommended that the SYNCIN pins are driven by an exter­nal device. Details are contained in a separate applications
bulletin (AB-153).

CONSTRUCTION

The DCV01’s basic construction is the same as standard ICs.
There is no substrate within the molded package. The
DCV01 is constructed using an IC, rectifier diodes, and a
wound magnetic toroid on a leadframe. As there is no solder
within the package, the DCV01 does not require any special
PCB assembly processing. This results in an isolated
DC/DC converter with inherently high reliability.

IN

ADDITIONAL FUNCTIONS

DISABLE/ENABLE

The DCV01 can be disabled or enabled by driving the SYNC
pin using an open drain CMOS gate. If the SYNCIN pin is
pulled low, the DCV01 will be disabled. The disable time
depends upon the external loading; the internal disable func­tion is implemented in 2µs. Removal of the pull down will
cause the DCV01 to be enabled.

Capacitive loading on the SYNCIN pin should be minimized
in order to prevent a reduction in the oscillator frequency.

DECOUPLING
Ripple Reduction

The high switching frequency of 400kHz allows simple
filtering. To reduce ripple, it is recommended that at least a
1µF capacitor is used on V

. Dual outputs should both be

OUT

decoupled to pin 5. A 2.2µF low ESR capacitor on the input
of the 5V in versions, and a 0.47µF low ESR cap on the 24V
DCV01 in versions is recommended.

V

SUPPLY

COM

FIGURE 1. Connecting the DCV01 in Series.

V

S

SYNC

0V

V

S

SYNC

0V

IN

IN

DCV 01

DCV 01

7

V

V

OUT 1

0V

OUT 2

0V

V

OUT1

+ V

OUT 2

DCV01

®

Connecting the DCV01 in Series

Multiple DCV01 isolated 1W DC/DC converters can be
connected in series to provide nonstandard voltage rails.
This is possible by utilizing the floating outputs provided by
the DCV01’s galvanic isolation.

Connect the positive V
V

(0V) of another (see Figure 1). If the SYNCIN pins are

OUT

from one DCV01 to the negative

OUT

tied together, the self-synchronization feature of the DCV01
will prevent beat frequencies on the voltage rails. The
SYNCIN feature of the DCV01 allows easy series connec­tion without external filtering, minimizing cost.

The outputs on dual output DCV01 versions can also be
connected in series to provide two times the magnitude of
V

as shown in Figure 2. For example, a dual 15V DCV01

OUT

could be connected to provide a 30V rail.

Connecting the DCV01 in Parallel

If the output power from one DCV01 is not sufficient, it is
possible to parallel the outputs of multiple DCV01s, as
shown in Figure 3. Again, the SYNCIN feature allows easy
synchronization to prevent power-rail beat frequencies at no
additional filtering cost.

PCB LAYOUT
Ripple and Noise

Careful consideration should be given to the layout of the
PCB in order that the best results can be obtained.

The DCV01 is a switching power supply and as such can
place high peak current demands on the input supply. In
order to avoid the supply falling momentarily during the fast
switching pulses ground and power planes should be used to
track the power to the input of DCV01. If this is not possible
then the supplies must be connected in a star formation with
the tracks made as wide as possible.

If the SYNCIN pin is being used then the tracking between
device SYNCIN pins should be short to avoid stray capaci­tance. If the SYNCIN pin is not being used it is advisable to
place a guard ring, (connected to input ground) around this
pin to avoid any noise pick up.

The output should be taken from the device using ground
and power planes, this will ensure minimum losses.

A good quality low ESR capacitor placed as close as
practicable across the input will reduce reflected ripple and
ensure a smooth start up.

A good quality low ESR capacitor placed as close as
practicable across the rectifier output terminal and output
ground will give the best ripple and noise performance.

THERMAL MANAGEMENT

Due to the high power density of this device it is advisable
to provide ground planes on the input and output.

V

SUPPLY

COM

FIGURE 2. Connecting Dual Outputs in Series.

V

SUPPLY

V

S

0V

V

S

SYNC

0V

V

S

SYNC

0V

IN

IN

DCV 01

DCV 01

DCV 01

+V

OUT

–V

OUT

0V

V

OUT

0V

V

OUT

0V

+V

OUT

–V

OUT

2 x Power Out

COM

FIGURE 3. Connecting Multiple DCV01s in Parallel.

®

DCV01

8