DCP010512BP [BB]
Miniature, 1W Isolated UNREGULATED DC/DC CONVERTERS; 微型1W隔离未稳压DC / DC转换器
| 型号： | DCP010512BP |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | Miniature, 1W Isolated UNREGULATED DC/DC CONVERTERS |
| 文件： | 总8页 (文件大小：129K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
DCP01
DCP01B
Series
DCP01
For most current data sheet and other product
information, visit www.burr-brown.com
Miniature, 1W Isolated
UNREGULATED DC/DC CONVERTERS
APPLICATIONS
FEATURES
● POINT-OF-USE POWER CONVERSION
● GROUND LOOP ELIMINATION
● DATA ACQUISITION
● UP TO 85% EFFICIENCY
● THERMAL PROTECTION
● DEVICE-TO-DEVICE SYNCHRONIZATION
● SHORT CIRCUIT PROTECTION
● INDUSTRIAL CONTROL AND
INSTRUMENTATION
● EN55022 CLASS B EMC PERFORMANCE
● UL1950 RECOGNIZED COMPONENT
● JEDEC PDIP-14 AND GULL-WING PACKAGES
● TEST EQUIPMENT
DESCRIPTION
The DCP01B series is a family of 1W, unregulated,
isolated DC/DC converters. Requiring a minimum of
external components and including on-chip device
protection, the DCP01B series provides extra features
such as output disable and synchronization of switch-
ing 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
and small size makes the DCP01B suitable for a wide
range of applications.
SYNCOUT
÷ 2
Reset
800kHz
Oscillator
VOUT
Power
Stage
0V
Watch-dog/
start-up
SYNCIN
PSU
Thermal
Shutdown
IBIAS
VS
Power Controller IC
0V
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
Twx: 910-952-1111
•
Internet: http://www.burr-brown.com/
•
Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©2000 Burr-Brown Corporation
Printed in U.S.A. May, 2000
PDS-1586B
SPECIFICATIONS
At TA = +25°C, unless otherwise specified.
DCP01B SERIES
TYP
PARAMETER
CONDITIONS
MIN
MAX
UNITS
OUTPUT
Power
Ripple
100% Full Load
O/P Capacitor = 1µF, 50% Load
Room to Cold
0.97
20
0.046
0.016
W
mVp-p
%/°C
%/°C
Voltage vs Temp
Room to Hot
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
Capacitance Loading on SYNCIN Pin
)
Switching Frequency = fOSC/2
VSYNC = +2V
800
kHz
V
µA
µs
pF
0
0.4
75
2
External
3
RELIABILITY
Demonstrated
TA = +55°C
75
FITS
THERMAL SHUTDOWN
IC Temperature at Shutdown
Shutdown Current
150
3
°C
mA
TEMPERATURE RANGE
Operating
–40
+100
°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(3)
0% LOAD
100% LOAD
TYP
VISO = 750VRMS
TYP
PRODUCT
MIN
TYP
MAX
MIN
TYP
MAX
TYP
MAX
TYP
DCP010505B
DCP010505DB
DCP010512B
DCP010512DB
DCP010515B
DCP010515DB
DCP012405B
4.5
4.5
4.5
4.5
4.5
4.5
21.6
5
5
5.5
5.5
5.5
5.5
5.5
5.5
26.4
4.75
±4.25
11.4
5
5.25
±5.75
12.6
19
18
21
19
26
19
13
31
32
38
37
42
41
23
20
22
29
40
34
42
14
80
81
85
82
82
85
77
3.6
3.8
5.1
4.0
3.8
4.7
3.8
±5
5
12
±12
15
5
±11.4
14.25
±14.25
4.75
±12.6
15.75
5
5
±15 ±15.75
5.25
24
5
NOTES: (1) During UL1950 recognition tests only. (2) 100% Load Current = 1W/VNOM TYP. (3) Load regulation = (VOUT at 10% Load – VOUT at 100% Load)/VOUT
at 75% Load.
ABSOLUTE MAXIMUM RATINGS
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
Input Voltage:
5V Input Models .................................................................................. 7V
24V Input Models .............................................................................. 29V
Storage Temperature ...................................................... –60°C to +125°C
Lead Temperature (soldering, 10s) ................................................. 270°C
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ORDERING INFORMATION
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.
(
( B )
)
(D )
DCP01 05 05
Basic Model Number: 1W Product
Voltage Input:
5V In
Voltage Output:
5V Out
Dual Output:
Model Revision:
Package Code:
P = PDIP-14
P-U = PDIP-14 Gull-Wing
®
2
DCP01B
PIN CONFIGURATION (Single-DIP and Gull-Wing)
PIN CONFIGURATION (Dual-DIP and Gull-Wing)
Top View
DIP
Top View
DIP
1
2
14 SYNCIN
VS
0V
1
2
14 SYNCIN
VS
0V
DCP01DB
DCP01B
5
6
7
0V
+VOUT
NC
5
6
7
0V
+VOUT
–VOUT
8
SYNCOUT
8
SYNCOUT
PIN DEFINITION (Single-DIP)
PIN DEFINITION (Dual-DIP)
PIN #
PIN NAME
DESCRIPTION
PIN #
PIN NAME
DESCRIPTION
1
2
5
6
7
8
14
VS
0V
0V
Voltage Input
1
2
5
6
7
8
14
VS
0V
0V
Voltage Input
Input Side Common
Output Side Common
+Voltage Out
Not Connected
Unrectified Transformer Output
Synchronization Pin
Input Side Common
Output Side Common
+Voltage Out
–Voltage Out
Unrectified Transformer Output
Synchronization Pin
+VOUT
NC
SYNCOUT
SYNCIN
+VOUT
–VOUT
SYNCOUT
SYNCIN
PACKAGE/ORDERING INFORMATION
PACKAGE
SPECIFIED
DRAWING
NUMBER
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
Single
DCP010505BP
DCP010505BP-U
DCP010512BP
DCP010512BP-U
DCP010515BP
DCP010515BP-U
DCP012405BP
DCP012405BP-U
Dual
DIP-14
DIP-14 Gull-Wing
DIP-14
DIP-14 Gull-Wing
DIP-14
DIP-14 Gull-Wing
DIP-14
DIP-14 Gull-Wing
010-1
010-2
010-1
010-2
010-1
010-2
010-1
010-2
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
DCP010505BP
DCP010505BP-U
DCP010512BP
DCP010512BP-U
DCP010515BP
DCP010515BP-U
DCP012405BP
DCP012405BP-U
DCP010505BP
DCP010505BP-U/700
DCP010512BP
DCP010512BP-U/700
DCP010515BP
DCP010515BP-U/700
DCP012405BP
DCP012405BP-U/700
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
DCP010505DBP
DCP010505DBP-U
DCP010512DBP
DCP010512DBP-U
DCP010515DBP
DCP010515DBP-U
DIP-14
DIP-14 Gull-Wing
DIP-14
DIP-14 Gull-Wing
DIP-14
010-1
010-2
010-1
010-2
010-1
010-2
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
–40°C to +100°C
DCP010505DBP
DCP010505DBP
Rails
Tape and Reel
Rails
Tape and Reel
Rails
DCP010505DBP-U DCP010505DBP-U/700
DCP010512DBP DCP010512DBP
DCP010512DBP-U DCP010512DBP-U/700
DCP010515DBP DCP010515DBP
DCP010515DBP-U DCP010515DBP-U/700
DIP-14 Gull-Wing
Tape and Reel
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.
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.
®
3
DCP01B
TYPICAL PERFORMANCE CURVES
At TA = +25°C, unless otherwise noted.
DCP010505B
OUTPUT RIPPLE vs LOAD (20MHz BW)
50
DCP010505B VOUT vs VS
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
4.4
1µF Ceramic
4.7µF Ceramic
10µF Ceramic
45
40
35
30
25
20
15
10
5
0
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
VS (V)
10
10
10
20
30
40
50
60
70
80
80
80
90 100
Load (%)
DCP010505B VOUT vs LOAD
DCP010505B EFFICIENCY vs LOAD
5.8
5.7
5.6
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
85
80
75
70
65
60
55
20
30
40
50
60
70
90
100
10
20
30
40
50
60
70
80
90
100
Load (%)
Load (%)
DCP010505DB VOUT vs LOAD
DCP010505DB EFFICIENCY vs LOAD
5.8
5.7
5.6
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
85
80
75
70
65
60
55
+VOUT
–VOUT
20
30
40
50
60
70
90
100
10
20
30
40
50
60
70
80
90
100
Load (%)
Load (%)
®
4
DCP01B
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, unless otherwise noted.
DCP010512B EFFICIENCY vs LOAD
DCP010512B VOUT vs LOAD
90
85
80
75
70
65
60
55
50
14.5
14
13.5
13
12.5
12
11.5
11
10
10
10
20
20
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
Load (%)
Load (%)
DCP010512DB VOUT vs LOAD
DCP010512DB EFFICIENCY vs LOAD
14.5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.00
85
80
75
70
65
60
55
50
+VOUT
–VOUT
10
20
30
40
50
60
70
80
90 100
30
40
50
60
70
80
90 100
Load (%)
Load (%)
DCP010515B VOUT vs LOAD
DCP010515B EFFICIENCY vs LOAD
18
17.5
17
85
80
75
70
65
60
55
50
16.5
16
15.5
15
14.5
14
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
Load (%)
Load (%)
®
5
DCP01B
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, unless otherwise noted.
DCP010515DB EFFICIENCY vs LOAD
DCP010515DB VOUT vs LOAD
90
85
80
75
70
65
60
55
50
18
17
16
15
14
+VOUT
–VOUT
10
20
30
40
50
60
70
80
90 100
10
20
30
40
50
60
70
80
90 100
Load (%)
Load (%)
DCP012405B EFFICIENCY vs LOAD
DCP012405B VOUT vs LOAD
90
80
70
60
50
40
30
20
10
0
5.60
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
100
Load (%)
Load (%)
DCP010505B
CONDUCTED EMISSIONS (125% Load)
DCP010505B
CONDUCTED EMISSIONS (8% Load)
60
50
60
50
40
40
30
30
20
20
10
10
0
0
–10
–20
–10
–20
0.15
1
10
30
0.15
1
10
30
Frequency (MHz)
Frequency (MHz)
®
6
DCP01B
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.
FUNCTIONAL DESCRIPTION
OVERVIEW
The DCP01B 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 pro-
cess.
If more than eight devices are to be synchronized, it is
recommended that the SYNCIN pins are driven by an exter-
nal device. Details are contained in a separate applications
bulletin (AB-153).
POWER STAGE
CONSTRUCTION
This uses a push-pull, center-tapped topology switching at
400kHz (divide by 2 from 800kHz oscillator).
The DCP01B’s basic construction is the same as standard
ICs. There is no substrate within the molded package. The
DCP01B is constructed using an IC, rectifier diodes, and a
wound magnetic toroid on a leadframe. As there is no solder
within the package, the DCP01B does not require any
special PCB assembly processing. This results in an isolated
DC/DC converter with inherently high reliability.
OSCILLATOR AND WATCHDOG
The onboard 800kHz oscillator generates the switching
frequency via a divide by 2 circuit. The oscillator can be
synchronized to other DCP01B 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.
ADDITIONAL FUNCTIONS
DISABLE/ENABLE
The DCP01B can be disabled or enabled by driving the SYNC
pin using an open drain CMOS gate. If the SYNCIN pin is
pulled low, the DCP01B 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 DCP01B to be enabled.
THERMAL SHUTDOWN
The DCP01B 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.
Capacitive loading on the SYNCIN pin should be minimized
in order to prevent a reduction in the oscillator frequency.
SYNCHRONIZATION
DECOUPLING
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.
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 VOUT. Dual outputs should both be
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
DCP01B in versions is recommended.
The DCP01B overcomes this by allowing devices to be
synchronized to one another. Up to eight devices can be
synchronized by connecting the SYNCIN pins together, tak-
ing 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.
VSUPPLY
VOUT 1
VS
SYNCIN
0V
DCP
01B
0V
VOUT1 + VOUT 2
VS
VOUT 2
DCP
01B
SYNCIN
0V
0V
COM
FIGURE 1. Connecting the DCP01B in Series.
®
7
DCP01B
The DCP01B 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 DCP01B. If this is not
possible then the supplies must be connected in a star
formation with the tracks made as wide as possible.
Connecting the DCP01B in Series
Multiple DCP01B 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 DCP01B’s galvanic isolation.
Connect the positive VOUT from one DCP01B to the nega-
tive VOUT (0V) of another (see Figure 1). If the SYNCIN pins
are tied together, the self-synchronization feature of the
DCP01B will prevent beat frequencies on the voltage rails.
The SYNCIN feature of the DCP01B allows easy series
connection without external filtering, minimizing cost.
If the SYNCIN pin is being used then the tracking between
device SYNCIN pins should be short to avoid stray capaci-
tance. 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 outputs on dual output DCP01B 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
DCP01B could be connected to provide a 30V rail.
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.
Connecting the DCP01B in Parallel
If the output power from one DCP01B is not sufficient, it is
possible to parallel the outputs of multiple DCP01Bs, as
shown in Figure 3. Again, the SYNCIN feature allows easy
synchronization to prevent power-rail beat frequencies at no
additional filtering cost.
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.
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.
VSUPPLY
+VOUT
VS
+VOUT
–VOUT
0V
DCP
01B
–VOUT
0V
COM
FIGURE 2. Connecting Dual Outputs in Series.
VSUPPLY
VOUT
VS
SYNCIN
DCP
DCP
01B
01B
0V
0V
VS
2 x Power Out
VOUT
SYNCIN
0V
0V
COM
FIGURE 3. Connecting Multiple DCP01Bs in Parallel.
®
8
DCP01B
相关型号：
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