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DCP021212P

Datasheet DCP022415DP, DCP022405P, DCP022405DP, DCP021515P, DCP021212P Datasheet (Burr Brown Corporation)

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Page 1
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Miniature, 2W Isolated
UNREGULATED DC/DC CONVERTERS
DCP02
DCP02
DCP02
Series
FEATURES
● UP TO 89% EFFICIENCY
● THERMAL PROTECTION
● DEVICE-TO-DEVICE SYNCHRONIZATION
● SO-28
(1)
POWER DENSITY OF 106W/in
3
(6.5W/cm3)
● EN55022 CLASS B EMC PERFORMANCE
● UL1950 RECOGNIZED
● JEDEC 14-PIN AND SO-28
(1)
PACKAGES
APPLICATIONS
● POINT-OF-USE POWER CONVERSION
● GROUND LOOP ELIMINATION
● DATA ACQUISITION
● INDUSTRIAL CONTROL AND
INSTRUMENTATION
● TEST EQUIPMENT
DESCRIPTION
The DCP02 series is a family of 2W, unregulated, isolated DC/DC converters. Requiring a minimum of external components and including on-chip device protection, the DCP02 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 power densities of 79W/in3 (4.8W/cm3) for the 14-PDIP, and 106W/in (6.5W/cm3) for the SO-28 features and small size makes the DCP02 suitable for a wide range of applications.
NOTE: (1) SO-28 version available January, 2000.
(1)
. This combination of
3
800kHz
Oscillator
SYNC/DISABLE
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: (520) 746-1111
©
1999 Burr-Brown Corporation PDS-1558A Printed in U.S.A. December, 1999
÷ 2
Reset
Watch-dog/
start-up
PSU
Thermal
Shutdown
I
BIAS
Power
Stage
0V
V 0V
OUT
Page 2
SPECIFICATIONS
At TA = +25°C, unless otherwise specified.
DCP02 SERIES PARAMETER CONDITIONS MIN TYP MAX UNITS OUTPUT
Power 100% Full Load 2 W Ripple O/P Capacitor = 1µF, 50% Load 20 mVp-p
INPUT
Voltage Range on V
S
ISOLATION
Voltage 1s Flash Test 1 kVrms
60s Test, UL1950
(1)
LINE
Regulation 1 %/1% of V
SWITCHING/SYNCHRONIZATION
Oscillator Frequency (f Sync Input Low 0 0.4 V Sync Input Current V Disable Time 2 µs
) Switching Frequency = f
OSC
= +2V 75 µA
SYNC
/2 800 kHz
OSC
Capacitance Loading on Sync Pin External 10 pF
RELIABILITY
Demonstrated T
= +55°C 75 FITS
A
THERMAL SHUTDOWN
IC Temperature at Shutdown 150 °C Shutdown Current 3mA
TEMPERATURE RANGE
Operating –40 +85 °C
INPUT OUTPUT LOAD NO LOAD BARRIER
VOLTAGE (V) VOLTAGE (V) REGULATION (%) CURRENT (mA) EFFICIENCY (%) CAPACITANCE (pF)
V
S
V
NOM
75% LOAD
(2)
10% TO 100% LOAD 0% LOAD 100% LOAD V
PRODUCT MIN TYP MAX MIN TYP MAX TYP MAX TYP TYP TYP
(3)
DCP020503P DCP020505P, U DCP020507P, U DCP020509P, U DCP020515DP, U DCP021205P, U
(3)
, U
4.5 5 5.5 3.13 3.3 3.46 19 30 18 74 26
(4)
4.5 5 5.5 4.75 5 5.25 14 20 18 80 22
(4)
4.5 5 5.5 6.65 7 7.35 14 25 20 81 30
(4)
4.5 5 5.5 8.55 9 9.45 12 20 23 82 31
(4)
4.5 5 5.5 ±14.25 ±15 ±15.75 11 20 27 85 24
(4)
10.8 12 13.2 4.75 5 5.25 7 15 14 83 33 DCP021212P 10.8 12 13.2 11.4 12 12.6 7 2 0 15 87 47 DCP021212DP 10.8 12 13.2 ±11.4 ±12 ±12.6 6 20 16 88 35 DCP021515P 13.5 15 16.5 14.25 15 15.75 6 20 15 88 42 DCP022405P 21.6 24 26.4 4.85 5 5.35 6 10 13 81 33 DCP022405DP 21.6 24 26.4 ±4.75 ±5 ±5.25 6 15 12 80 22 DCP022415DP 21.6 24 26.4 ±14.25 ±15 ±15.75 6 20 16 79 44
NOTES: (1) During UL1950 recognition tests only. (2) 100% Load Current = 2W/V (4) SO-28 version available January, 2000.
NOM
–10 10 %
1 kVrms
S
I
Q
= 750V
ISO
C
ISO
RMS
TYP. (3) DCP020503P and U models available January, 2000.
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.
®
DCP02
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PIN CONFIGURATION (Single-DIP)
PIN CONFIGURATION (Dual-DIP)
Top View DIP
V 0V
1
S
2
14
SYNC
DCP02
5
0V
6
+V
OUT
NC
7
8
NC
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
OUT
8 NC Not Connected 14 SYNC Synchronization Pin
Voltage Input
+Voltage Out
Top View DIP
14
SYNC
0V
1
V
S
2
DCP02
5
0V
6
+V
OUT
–V
OUT
7
8
NC
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 NC Not Connected
OUT OUT
14 SYNC Synchronization Pin
Voltage Input
+Voltage Out –Voltage Out
PIN CONFIGURATION (Single-SOIC)
(1)
Top View SOIC
28
SYNC
27
NC
26
NC
0V 0V
1
V
S
2 3
DCP02
(1)
17
NC
16
NC
15
NC
12
0V
13
+V
OUT
14
NC
PIN DEFINITION (Single-SOIC)
PIN # PIN NAME DESCRIPTION
1V 2 0V Input Side Common
S
Voltage Input
3 0V Input Side Common 12 0V Output Side Common 13 +V 14 NC Not Connected
OUT
+Voltage Out
15 NC Not Connected 16 NC Not Connected 17 NC Not Connected 26 NC Not Connected 27 NC Not Connected 28 SYNC Synchronization Pin
PIN CONFIGURATION (Dual-SOIC)
(1)
Top View SOIC
V 0V 0V
1
S
2 3
28
SYNC
27
NC
26
NC
DCP02
(1)
17
NC
16
NC
15
NC
12
0V
13
+V
OUT
14
–V
OUT
PIN DEFINITION (Dual-SOIC)
PIN # PIN NAME DESCRIPTION
1V 2 0V Input Side Common
S
Voltage Input
3 0V Input Side Common 12 0V Output Side Common 13 +V 14 –V 15 NC Not Connected
OUT OUT
+Voltage Out –Voltage Out
16 NC Not Connected 17 NC Not Connected 26 NC Not Connected 27 NC Not Connected 28 SYNC Synchronization Pin
NOTE: (1) SO-28 version available January, 2000.
®
3
DCP02
Page 4
ABSOLUTE MAXIMUM RATINGS
Input Voltage
5V Input Models .................................................................................. 7V
12V Input Models .............................................................................. 15V
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 appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ELECTROSTATIC DISCHARGE SENSITIVITY
ESD damage can range from subtle performance degrada-
ORDERING INFORMATION
Basic Model Number: 2W Product Voltage Input:
5V In
Voltage Output:
5V Out Dual Output: Package Code:
P = 14-Pin Plastic DIP
U = 28-Lead SOIC
NOTE: (1) SO-28 version available 1Q00.
(1)
DCP02
05 05
(D )
()
tion 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
DCP020503P DCP020503U DCP020505P DIP-14 010-1 –40°C to +85°C DCP020505P DCP020505P Rails DCP020505U DCP020507P DIP-14 010-1 –40°C to +85°C DCP020507P DCP020507P Rails DCP020507U DCP020509P DIP-14 010-1 –40°C to +85°C DCP020509P DCP020509P Rails DCP020509U DCP021205P DIP-14 010-1 –40°C to +85°C DCP021205P DCP021205P Rails DCP021205U DCP021212P DIP-14 010-1 –40°C to +85°C DCP021212P DCP021212P Rails DCP021515P DIP-14 010-1 –40°C to +85°C DCP021515P DCP021515P Rails DCP022405P DIP-14 010-1 –40°C to +85°C DCP022405P DCP022405P Rails
Dual
DCP020515DP DIP-14 010-1 –40°C to +85 °C DCP020515DP DCP020515DP Rails DCP020515DU DCP021212DP DIP-14 010-1 –40°C to +85 °C DCP021212DP DCP021212DP Rails DCP022405DP DIP-14 010-1 –40°C to +85 °C DCP022405DP DCP022405DP Rails DCP022415DP DIP-14 010-1 –40°C to +85 °C DCP022415DP DCP022415DP Rails
NOTES: (1) Models with a slash (/ ) are available only in Tape and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel). Ordering 1000 pieces of “DCP020503U/1K” will get a single 1000-piece Tape and Reel. (2) Shaded models available January, 2000.
(2) (2)
(2)
(2)
(2)
(2)
(2)
DIP-14 010-1 –40°C to +85°C DCP020503P DCP020503P Rails
SOIC-28 217-2 –40°C to +85°C DCP020503U DCP020503U/1K Tape and Reels
SOIC-28 217-2 –40°C to +85°C DCP020505U DCP020505U/1K Tape and Reels
SOIC-28 217-2 –40°C to +85°C DCP020507U DCP020507U/1K Tape and Reels
SOIC-28 217-2 –40°C to +85°C DCP020509U DCP020509U/1K Tape and Reels
SOIC-28 217-2 –40°C to +85°C DCP021205U DCP021205U/1K Tape and Reels
SOIC-28 217-2 –40°C to +85°C DCP020515DU DCP020515DU/1K Tape and Reels
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT
(1)
MEDIA
®
DCP02
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TYPICAL PERFORMANCE CURVES
DCP020505P
OUTPUT AC RIPPLE (20MHz Band)
450 400 350 300 250 200 150 100
50
0
Load Current (mA)
Ripple (mVp-p)
0 200
0.1µF
400
1µF
At TA = +25°C, unless otherwise noted.
(V)
OUT
V
Emission Level, Peak (dBµA)
–10 –20
5.4
5.3
5.2
5.1
60
CONDUCTED EMISSIONS (500mA Load)
50 40 30 20 10
0
DCP020505P
10.15 10 30 Frequency (MHz)
DCP021205P
vs LOAD
V
OUT
(V)
OUT
V
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
(W)
OUT
P
2.5
2.0
1.5
1.0
V
OUT
–20 20 40 60 80 1000–40
POWER OUT vs TEMPERATURE (400mA Load)
DCP020505P
vs TEMPERATURE (75% Load)
Temperature (°C)
DCP021205P
5.0
4.9 0 20 40 60 80 100
Load (%)
DCP0212
100
80
60
40
Efficiency (%)
20
0
0 255075100
EFFICIENCY vs LOAD
DCP1212DP
DCP1205P
Load (%)
0.5
0
5
0 25 50 75 100–25–50
Temperature (°C)
®
DCP02
Page 6
FUNCTIONAL DESCRIPTION
OVERVIEW
The DCP02 offers up to 2W of unregulated output power from a 5V, 12V, 15V, or 24V input source with a typical efficiency of up to 89%. 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.
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 DCP02 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.
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 variation in switching frequencies between the DC/DC converters.
The DCP02 overcomes this by allowing devices to be syn­chronized to one another. Up to eight devices can be syn­chronized by connecting the SYNC pins together, taking care to minimize the capacitance of tracking. Significant stray capacitance (> 10pF) will have the effect of reducing the switching frequency, or even stopping the oscillator circuit. It is also recommended that power and ground lines are star connected.
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 SYNC pins are driven by an external device. Details are contained in a separate applications bulletin (AB-153).
THERMAL SHUTDOWN
The DCP02 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.
V
SUPPLY
V
S
SYNC
0V
V
S
SYNC
0V
CONSTRUCTION
The DCP02’s basic construction is the same as standard ICs. There is no substrate within the molded package. The DCP02 is constructed using an IC, rectifier diodes, and a wound magnetic toroid on a leadframe. As there is no solder within the package, the DCP02 does not require any special PCB assembly processing. This results in an isolated DC/DC converter with inherently high reliability.
V
OUT 1
DCP 02
0V
V
+ V
OUT 2
DCP 02
V
OUT1
OUT 2
0V
COM
FIGURE 1. Connecting the DCP02 in Series.
®
DCP02
6
Page 7
ADDITIONAL FUNCTIONS
DISABLE/ENABLE
The DCP02 can be disabled or enabled by driving the SYNC pin using an open drain CMOS gate. If the SYNC pin is pulled low, the DCP02 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 DCP02 to be enabled.
Capacitive loading on the SYNC 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 a 1µF capacitor is used on V decoupled to pin 5. A 2.2µF capacitor on the input is recommended.
. Dual outputs should both be
OUT
Connecting the DCP02 in Series
Multiple DCP02 isolated 2W DC/DC converters can be connected in series to provide nonstandard voltage rails. This is possible by utilizing the floating outputs provided by the DCP02’s galvanic isolation.
Connect the positive V V
(0V) of another (see Figure 1). If the SYNC pins are
OUT
from one DCP02 to the negative
OUT
tied together, the self-synchronization feature of the DCP02 will prevent beat frequencies on the voltage rails. The SYNC feature of the DCP02 allows easy series connection without external filtering, minimizing cost.
The outputs on dual output DCP02 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
OUT
DCP022415D could be connected to provide a 30V rail.
Connecting the DCP02 in Parallel
If the output power from one DCP02 is not sufficient, it is possible to parallel the outputs of multiple DCP02s, as shown in Figure 3. Again, the SYNC feature allows easy synchronization to prevent power-rail beat frequencies at no additional filtering cost.
V
SUPPLY
COM
FIGURE 2. Connecting Dual Outputs in Series.
V
SUPPLY
V
S
0V
V
S
SYNC
0V
V
S
SYNC
DCP 02
DCP 02
DCP 02
+V
–V
+V
OUT
OUT
0V
V
OUT
0V
V
OUT
OUT
–V
OUT
2 x Power Out
0V
COM
FIGURE 3. Connecting Multiple DCP02s in Parallel.
0V
®
7
DCP02
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