DCP022405 [BB]
Miniature, 2W Isolated UNREGULATED DC/DC CONVERTERS; 微型2W隔离未稳压DC / DC转换器
| 型号： | DCP022405 |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | Miniature, 2W Isolated UNREGULATED DC/DC CONVERTERS |
| 文件： | 总10页 (文件大小：186K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DCP02
DCP02
SERIES
DCP02
SBVS011B – MAY 2001
Miniature, 2W Isolated
UNREGULATED DC/DC CONVERTERS
DESCRIPTION
FEATURES
The DCP02 series is a family of 2W, unregulated, isolated
DC/DC converters. Requiring a minimum of external com-
ponents and including on-chip device protection, the DCP02
series provides extra features such as output disable and
synchronization of switching frequencies.
● UP TO 89% EFFICIENCY
● THERMAL PROTECTION
● DEVICE-TO-DEVICE SYNCHRONIZATION
● SO-28 POWER DENSITY OF 106W/in3 (6.5W/cm3)
● EN55022 CLASS B EMC PERFORMANCE
● UL1950 RECOGNIZED
The use of a highly integrated package design results in highly
reliable products with power densitiesof 79W/in3 (4.8W/cm3)
for DIP-14, and 106W/in3 (6.5W/cm3) for SO-28. This com-
bination of features and small size makes the DCP02 suitable
for a wide range of applications.
● JEDEC 14-PIN AND SO-28 PACKAGES
APPLICATIONS
● POINT-OF-USE POWER CONVERSION
● GROUND LOOP ELIMINATION
● DATA ACQUISITION
● INDUSTRIAL CONTROL AND INSTRUMENTATION
● TEST EQUIPMENT
÷ 2
Reset
800kHz
Oscillator
VOUT
Power
Stage
0V
Watch-dog/
start-up
SYNC/DISABLE
PSU
Thermal
Shutdown
IBIAS
VS
Power Controller IC
0V
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
ABSOLUTE MAXIMUM RATINGS
ELECTROSTATIC
Input Voltage
DISCHARGE SENSITIVITY
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. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
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.
ORDERING INFORMATION
(
)
(D )
05 05
DCP02
Basic Model Number: 2W Product
Voltage Input:
5V In
Voltage Output:
5V Out
Dual Output:
Package Code:
P = DIP-14
U = SO-28
PACKAGE/ORDERING INFORMATION
PACKAGE
SPECIFIED
DRAWING
NUMBER
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
Single
DCP020503P
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
DCP020503P
DCP020503U
DCP020505P
DCP020505U
DCP020507P
DCP020507U
DCP020509P
DCP020509U
DCP021205P
DCP021205U
DCP021212P
DCP021212U
DCP021515P
DCP021515U
DCP022405P
DCP022405U
DCP020503P
DCP020503U/1K
DCP020505P
Rails
Tape and Reel
Rails
DCP020503U
DCP020505P
DCP020505U
DCP020507P
DCP020507U
DCP020509P
DCP020509U
DCP021205P
DCP021205U
DCP021212P
DCP021212U
DCP021515P
DCP021515U
DCP022405P
DCP022405U
DCP020505U/1K
DCP020507P
Tape and Reel
Rails
DCP020507U/1K
DCP020509P
Tape and Reel
Rails
DCP020509U/1K
DCP021205P
Tape and Reel
Rails
DCP021205U/1K
DCP021212P
Tape and Reel
Rails
DCP021212U/1K
DCP021515P
Tape and Reel
Rails
DCP021515U/1K
DCP022405P
Tape and Reel
Rails
DCP022405U/1K
Tape and Reel
Dual
DCP020515DP
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
DIP-14
SO-28
010-1
217-2
010-1
217-2
010-1
217-2
010-1
217-2
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
DCP020515DP
DCP020515DU
DCP021212DP
DCP021212DU
DCP022405DP
DCP022405DU
DCP022415DP
DCP022415DU
DCP020515DP
DCP020515DU/1K
DCP021212DP
Rails
Tape and Reel
Rails
DCP020515DU
DCP021212DP
DCP021212DU
DCP022405DP
DCP022405DU
DCP022415DP
DCP022415DU
DCP021212DU/1K
DCP022405DP
Tape and Reel
Rails
DCP022405DU/1K
DCP022415DP
Tape and Reel
Rails
DCP022415DU/1K
Tape and Reel
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.
DCP02
2
SBVS011B
ELECTRICAL CHARACTERISTICS
At TA = +25°C, unless otherwise specified.
DCP02 SERIES
TYP
PARAMETER
CONDITIONS
MIN
MAX
UNITS
OUTPUT
Power
100% Full Load
2
W
Ripple
O/P Capacitor = 1µF, 50% Load
20
mVp-p
INPUT
Voltage Range on VS
–10
10
%
ISOLATION
Voltage
1s Flash Test
60s Test, UL1950(1)
1
1
kVrms
kVrms
LINE
Regulation
1
%/1% of VS
SWITCHING/SYNCHRONIZATION
Oscillator Frequency (fOSC
Sync Input Low
Sync Input Current
Disable Time
)
Switching Frequency = fOSC/2
VSYNC = +2V
800
kHz
V
µA
µs
0
0.4
10
75
2
Capacitance Loading on Sync Pin
External
pF
RELIABILITY
Demonstrated
TA = +55°C
75
FITS
THERMAL SHUTDOWN
IC Temperature at Shutdown
Shutdown Current
150
3
°C
mA
TEMPERATURE RANGE
Operating
–40
+85
°C
INPUT
OUTPUT
LOAD
NO LOAD
BARRIER
VOLTAGE (V)
VOLTAGE (V)
REGULATION (%)
CURRENT (mA)
EFFICIENCY (%) CAPACITANCE (pF)
VS
VNOM
IQ
CISO
75% LOAD(2)
10% TO 100% LOAD
0% LOAD
100% LOAD
TYP
VISO = 750VRMS
TYP
PRODUCT
MIN
TYP
MAX
MIN
TYP
MAX
TYP
MAX
TYP
DCP020503P, U
DCP020505P, U
DCP020507P, U
DCP020509P, U
DCP020515DP, U
DCP021205P, U
DCP021212P, U
DCP021212DP, U
DCP021515P, U
DCP022405P
4.5
4.5
5
5.5
5.5
3.13
4.75
3.3
5
3.46
5.25
7.35
9.45
19
14
14
12
11
7
30
20
25
20
20
15
20
20
20
10
15
15
25
18
18
20
23
27
14
15
16
15
13
13
12
16
74
80
81
82
85
83
87
88
88
81
81
80
79
26
22
30
31
24
33
47
35
42
33
33
22
44
5
4.5
5
5.5
6.65
7
4.5
5
5.5
8.55
9
4.5
5
5.5
±14.25
4.75
±15 ±15.75
10.8
10.8
10.8
13.5
21.6
21.6
21.6
21.6
12
12
12
15
24
24
24
24
13.2
13.2
13.2
16.5
26.4
26.4
26.4
5
12
±12
15
5
5.25
12.6
11.4
7
±11.4
14.25
4.85
±12.6
15.75
5.35
6
6
6
DCP022405U
4.75
5
5.25
10
6
DCP022405DP, U
DCP022415DP, U
±4.75
±5
±5.25
26.4 ±14.25
±15 ±15.75
6
NOTES: (1) During UL1950 recognition tests only. (2) 100% Load Current = 2W/VNOM TYP.
DCP02
3
SBVS011B
PIN CONFIGURATION (Single-DIP)
PIN CONFIGURATION (Dual-DIP)
Top View
DIP
Top View
DIP
VS
0V
1
2
14 SYNC
VS
0V
1
2
14 SYNC
DCP02
DCP02
0V
+VOUT
NC
5
6
7
0V
+VOUT
–VOUT
5
6
7
8
NC
8
NC
PIN DEFINITION (Single-DIP)
PIN DEFINITION (Dual-DIP)
PIN #
PIN NAME
DESCRIPTION
PIN #
PIN NAME
DESCRIPTION
1
2
5
6
7
8
VS
0V
0V
+VOUT
NC
NC
Voltage Input
1
2
5
6
7
8
VS
0V
0V
+VOUT
–VOUT
NC
Voltage Input
Input Side Common
Output Side Common
+Voltage Out
–Voltage Out
Input Side Common
Output Side Common
+Voltage Out
Not Connected
Not Connected
Not Connected
14
SYNC
Synchronization Pin
14
SYNC
Synchronization Pin
PIN CONFIGURATION (Single-SO)
PIN CONFIGURATION (Dual-SO)
Top View
SO
Top View
SO
VS
0V
0V
1
2
3
28 SYNC
27 NC
VS
0V
0V
1
2
3
28 SYNC
27 NC
26 NC
26 NC
DCP02
DCP02
17 NC
16 NC
15 NC
0V 12
+VOUT 13
NC 14
17 NC
16 NC
15 NC
0V 12
+VOUT 13
–VOUT 14
PIN DEFINITION (Single-SO)
PIN DEFINITION (Dual-SO)
PIN #
PIN NAME
DESCRIPTION
PIN #
PIN NAME
DESCRIPTION
1
2
3
VS
0V
0V
0V
+VOUT
NC
NC
NC
NC
NC
Voltage Input
1
2
3
VS
0V
0V
Voltage Input
Input Side Common
Input Side Common
Output Side Common
+Voltage Out
–Voltage Out
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Synchronization Pin
Input Side Common
Input Side Common
Output Side Common
+Voltage Out
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
12
13
14
15
16
17
26
27
28
12
13
14
15
16
17
26
27
28
0V
+VOUT
–VOUT
NC
NC
NC
NC
NC
SYNC
NC
SYNC
Synchronization Pin
DCP02
4
SBVS011B
TYPICAL CHARACTERISTICS
At TA = +25°C, unless otherwise noted.
DCP020505P
CONDUCTED EMISSIONS (500mA Load)
60
DCP020505P
VOUT vs TEMPERATURE (75% Load)
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
50
40
30
20
10
0
–10
–20
0.15
1
10
30
–40
–20
0
20
40
60
80
100
Frequency (MHz)
Temperature (°C)
DCP021205P
DCP021205P
POWER OUT vs TEMPERATURE (400mA Load)
VOUT vs LOAD
5.4
5.3
5.2
5.1
5.0
4.9
2.5
2.0
1.5
1.0
0.5
0
0
20
40
60
80
100
–50
–25
0
25
50
75
100
Temperature (°C)
Load (%)
DCP020505P
DCP0212
OUTPUT AC RIPPLE (20MHz Band)
EFFICIENCY vs LOAD
450
400
350
300
250
200
150
100
50
100
80
60
40
20
0
DCP1212DP
DCP1205P
0.1µF
1µF
0
0
200
400
0
25
50
75
100
Load Current (mA)
Load (%)
DCP02
5
SBVS011B
SYNCHRONIZATION
FUNCTIONAL DESCRIPTION
OVERVIEW
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 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.
The DCP02 overcomes this by allowing devices to be syn-
chronized to one another. Up to eight devices can be syn-
chronized 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.
POWER STAGE
This uses a push-pull, center-tapped topology switching at
400kHz (divide by 2 from 800kHz oscillator).
If synchronized devices are used, it should be noted that, at
start up, all devices will draw maximum current simulta-
neously. 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.
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.
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).
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.
CONSTRUCTION
THERMAL SHUTDOWN
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.
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.
VSUPPLY
VOUT 1
VS
SYNC
0V
DCP
02
0V
VOUT1 + VOUT 2
VS
VOUT 2
DCP
02
SYNC
0V
0V
COM
FIGURE 1. Connecting the DCP02 in Series.
DCP02
6
SBVS011B
Connecting the DCP02 in Series
ADDITIONAL FUNCTIONS
DISABLE/ENABLE
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.
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 func-
tion is implemented in 2µs. Removal of the pull down will
cause the DCP02 to be enabled.
Connect the positive VOUT from one DCP02 to the negative
VOUT (0V) of another (see Figure 1). If the SYNC pins are
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.
Capacitive loading on the SYNC pin should be minimized in
order to prevent a reduction in the oscillator frequency.
The outputs on dual output DCP02 versions can also be
connected in series to provide two times the magnitude of
VOUT as shown in Figure 2. For example, a dual 15V
DCP022415D could be connected to provide a 30V rail.
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 VOUT. Dual outputs should both be
decoupled to pin 5. A 2.2µF capacitor on the input is
recommended.
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.
VSUPPLY
+VOUT
VS
+VOUT
–VOUT
DCP
02
–VOUT
0V
0V
COM
FIGURE 2. Connecting Dual Outputs in Series.
VSUPPLY
VOUT
VS
SYNC
DCP
DCP
02
02
0V
0V
VS
2 x Power Out
VOUT
SYNC
0V
0V
COM
FIGURE 3. Connecting Multiple DCP02s in Parallel.
DCP02
7
SBVS011B
PACKAGE OPTION ADDENDUM
www.ti.com
30-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
PDIP
SOP
SOP
Drawing
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
NVA
DVB
DVB
DCP020503P
DCP020503U
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
7
25
28
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
Call TI
Level-NA-NA-NA
12
12
7
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP020503U/1K
DCP020505P
1000
25
DCP020505U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP020505U/1K
DCP020507P
1000
25
DCP020507U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP020507U/1K
DCP020509P
1000
25
DCP020509U
12
7
28
Level-3-240C-168 HR
Level-NA-NA-NA
DCP020515DP
DCP020515DU
DCP020515DU/1K
DCP021205P
25
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
1000
25
DCP021205U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP021205U/1K
DCP021212DP
DCP021212DU
DCP021212DU/1K
DCP021212P
1000
25
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
1000
25
DCP021212U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP021212U/1K
DCP021515P
1000
25
DCP021515U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP021515U/1K
DCP022405DP
DCP022405DU
DCP022405DU/1K
DCP022405P
1000
25
12
12
7
28
Call TI
1000
25
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
CU SNPB
Level-3-240C-168 HR
Level-NA-NA-NA
DCP022405U
12
12
7
28
Level-3-240C-168 HR
Level-3-240C-168 HR
Level-NA-NA-NA
DCP022405U/1K
DCP022415DP
DCP022415DU
DCP022415DU/1K
1000
25
12
12
28
Level-3-240C-168 HR
Level-3-240C-168 HR
1000
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
Eco Plan
30-Mar-2005
(2)
-
The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS
&
no Sb/Br)
-
please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 2
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