DCP011512DP [BB]
IC-DC-DC CONVERTER ; 集成电路（IC）的DC -DC转换器\n
| 型号： | DCP011512DP |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | IC-DC-DC CONVERTER
|
| 文件： | 总10页 (文件大小：176K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
DCP0115
DCP0115
Series
DCP0115
Miniature 15V Input, 1W Isolated
UNREGULATED DC/DC CONVERTERS
FEATURES
● STANDARD JEDEC PLASTIC PACKAGE
● LOW PROFILE: 0.15" (3.8mm)
● SYNCHRONIZABLE
DESCRIPTION
The DCP0115 family is a series of high efficiency,
15V input isolated DC/DC converters. In addition to
1W nominal galvanically isolated output power capa-
bility, the range of DC/DCs are also fully
synchronizable. The devices feature thermal shutdown,
and overload protection is implemented via watchdog
circuitry. Advanced power-on reset techniques give
superior reset performance and the devices will start
into any capacitive load up to full power output.
● OUTPUT SHORT CIRCUIT PROTECTION
● THERMAL SHUTDOWN
● STARTS INTO ANY CAPACITIVE LOAD
● EFFICIENCY: 76% (at Full Load)
● 1000Vrms ISOLATION
The DCP01 family is implemented in standard-molded
IC packaging, giving outlines suitable for high volume
assembly.
● 400kHz SWITCHING
● 93 MILLION HOURS MTTF
● AVAILABLE IN TAPE AND REEL
APPLICATIONS
● POINT OF USE POWER CONVERSION
● GROUND LOOP ELIMINATION
● DATA ACQUISITION
SYNCOUT
● INDUSTRIAL CONTROL AND
INSTRUMENTATION
● TEST EQUIPMENT
÷ 2
Reset
800kHz
Oscillator
+VOUT
–VOUT
Power
Stage
0V
Watch-dog/
start-up
SYNCIN
PSU
Thermal
IBIAS
Shutdown
VS
Power Controller IC
0V
InternationalAirportIndustrialPark • MailingAddress:POBox11400,Tucson,AZ85734 • StreetAddress:6730S.TucsonBlvd.,Tucson,AZ 85706 • Tel:(520)746-1111 • Twx:910-952-1111
Internet:http://www.burr-brown.com/ • FAXLine:(800)548-6133(US/CanadaOnly) • Cable:BBRCORP • Telex:066-6491 • FAX:(520)889-1510 • ImmediateProductInfo:(800)548-6132
©1997 Burr-Brown Corporation
PDS-1382C
Printed in U.S.A. January, 1999
SPECIFICATIONS
At TA = +25°C, VS = +15V, unless otherwise specified.
DCP0115 SERIES
TYP
PARAMETER
CONDITIONS
MIN
MAX
UNITS
OUTPUT
Power
VS + 4%
100% Full Load
1
0.92
W
W
(1)
Voltage (VNOM
)
DCP011512D
DCP011515D
75% Full Load
75% Full Load
±10
±13
±12
±15
±12.6
±15.75
V
V
Voltage vs Temperature
Short Circuit Duration
Ripple
±0.08
%/°C
VS ± 10%
CL = O/P Capacitor = 10µF
100% Full Load
Indefinite
6
mVp-p
INPUT
Nominal Voltage (VS)
Voltage Range
15
V
%
–10
10
Supply Current
Reflected Ripple Current
100% Full Load
CIN = I/P Capacitor = 1µF
50% Full Load
83
8
mA
mArms
ISOLATION
Voltage(2)
1s Flash Test
1
kVrms
kVrms
GΩ
Continuous Voltage(3)
Insulation Resistance
Input/Output Capacitance
1
>1
2.5
pF
LOAD REGULATION
DCP011512D
10% to 100% Load
10% to 25% Load
25% to 75% Load
75% to 100% Load
20
10
5
39
39
%
%
%
%
–7
DCP011515D
10% to 100% Load
10% to 25% Load
25% to 75% Load
75% to 100% Load
20
10
9
%
%
%
%
–4
SWITCHING/SYNCHRONIZATION
Oscillator Frequency (fOSC
Sync Input Low
Sync Input Current
Reset Time
SYNCOUT Frequency
)
Switching Frequency = fOSC/2
VSYNC = +2V
800
kHz
V
µA
µs
0
0.8
48
3.8
400
kHz
GENERAL
No Load Current
DCP011512D
DCP011515D
Efficiency
0% Load
0% Load
14
17
mA
mA
DCP011512D
100% Full Load
10% Full Load
100% Full Load
10% Full Load
TA = +85°C
76
48
76
42
%
%
%
DCP011515D
MTTF(3)
%
136,000
2,630,000
92,600,000
hrs
hrs
hrs
TA = +55°C
TA = +25°C
Weight
14-Pin PDIP
1.08
3
g
THERMAL SHUTDOWN
Die Temperature
Shutdown Current
115
–40
140
100
°C
mA
TEMPERATURE RANGE
Operating
°C
NOTES: (1) 100 % load current = 1W/VNOM typical. (2) Rated working voltage = 130Vrms (IEC950 convention). (3) Life test data.
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.
®
2
DCP0115
PIN CONFIGURATION (Dual Out)
PIN DEFINITION
PIN #
PIN NAME
DESCRIPTION
Top View
DIP
1
2
5
6
7
8
14
VS
0V
0V
Voltage Input.
Input Side Common.
Output Side Common.
+Voltage Out.
–Voltage Out.
Unregulated 400kHz Output from Transformer.
Synchronization Pin.
VS
0V
1
2
14 SYNCIN
+VOUT
–VOUT
SYNCOUT
SYNCIN
DCP0115
0V
+VOUT
–VOUT
5
6
7
ELECTROSTATIC
DISCHARGE SENSITIVITY
8
SYNCOUT
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.
ABSOLUTE MAXIMUM RATINGS
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.
Input Voltage ........................................................................................ 18V
Storage Temperature ...................................................... –60°C to +150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
ORDERING INFORMATION
(
)
15 15
DCP01
D
Basic Model Number: 1W Product
Voltage Input:
15V In
Voltage Output:
15V Out
Dual Output:
Package Code:
P = 14-Pin Plastic DIP
P-U = 14-Pin Plastic DIP Gull Wing
PACKAGE/ORDERING INFORMATION
PACKAGE
SPECIFIED
DRAWING
NUMBER(1)
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(2)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
Dual
DCP011512D
DCP011512D
"
DCP011515D
DCP011515D
"
14-Pin PDIP
14-Pin PDIP Gull Wing
010-1
010-2
"
010-1
010-2
"
–40°C to +100°C
–40°C to +100°C
DCP011512DP
DCP011512DP-U
DCP011512DP
DCP011512DP-U
DCP011512DP-U/700
DCP011515DP
DCP011515DP-U
DCP011515DP-U/700
Rails
Rails
Tape and Reel
Rails
Rails
Tape and Reel
"
"
"
14-Pin PDIP
14-Pin PDIP Gull Wing
"
–40°C to +100°C
–40°C to +100°C
"
DCP011515DP
DCP011515DP-U
"
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) 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 DCP011512DP-U/700 will get a single
700-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
®
3
DCP0115
TYPICAL PERFORMANCE CURVES
At TA = +25°C, unless otherwise noted.
DCP011512D
DCP011515D
EFFICIENCY vs LOAD
80
EFFICIENCY vs LOAD
80
75
70
65
60
55
50
45
40
75
70
65
60
55
50
45
40
0
10
20
30
40
50
60
70
80
90 100
0
10
20
30
40
50
60
70
80
90 100
Load (%)
Load (%)
DCP011512D
OUTPUT VOLTAGE vs LOAD
DCP011515D
OUTPUT VOLTAGE vs LOAD
14.0
13.5
13.0
12.5
12.0
11.5
11.0
18.0
17.5
17.0
16.5
16.0
15.5
15.0
14.5
14.0
+VOUT
–VOUT
+VOUT
–VOUT
80 90 100
0
10
20
30 40
50
60
70
0
10
20
30
40
50
60
70
80
90 100
Load (%)
Load (%)
REFLECTED rms RIPPLE CURRENT vs LOAD
PEAK-TO-PEAK RIPPLE VOLTAGE vs LOAD
CL = 100nF
60
50
40
30
20
10
0
200
180
160
140
120
100
80
CIN = 100µF
60
CL = 1µF
CIN = 1µF
40
CL = 10µF
20
0
80 90 100
0
10
20
30 40
50
60
70
0
10
20
30
40
50 60
Load (%)
70
80
90 100
Load (%)
®
4
DCP0115
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, unless otherwise noted.
DCP011512D
OUTPUT VOLTAGE vs INPUT VOLTAGE (75% Load)
DCP011515D
OUTPUT VOLTAGE vs INPUT VOLTAGE (75% Load)
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
17.5
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
–VOUT
+VOUT
–VOUT
+VOUT
13.5
14.0
14.5
15
15.5
16.0
16.5
120
10
13.5
14.0
14.5
15
15.5
16.0
16.5
100
10
Input Voltage (V)
Input Voltage (V)
SWITCHING FREQUENCY vs TEMPERATURE
OUTPUT POWER vs TEMPERATURE
101
100
99
98
97
96
95
94
93
92
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–40
–20
0
20
40
60
80
100
–40
–20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
DCP011512D
DCP011512D
LOAD BALANCE (+VOUT LOAD = 100%)
LOAD BALANCE (+VOUT LOAD = 10%)
15
10
5
15
10
5
+VOUT
+VOUT
0
0
–5
–10
–15
–5
–10
–15
–VOUT
–VOUT
50
100
75
50
150
100
75
–VOUT Load (% of Full Load)
–VOUT Load (% of Full Load)
®
5
DCP0115
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, unless otherwise noted.
DCP011515D
DCP011515D
LOAD BALANCE (+VOUT LOAD = 100%)
LOAD BALANCE (+VOUT LOAD = 10%)
15
10
20
15
+VOUT
+VOUT
10
5
5
0
0
–5
–5
–VOUT
–VOUT
–10
–15
–20
–10
–15
–20
10
10
100
75
50
150
100
75
50
–VOUT Load (% of Full Load)
–VOUT Load (% of Full Load)
®
6
DCP0115
THERMAL SHUTDOWN
FUNCTIONAL DESCRIPTION
OVERVIEW
The DCP0115 is also protected by thermal shutdown. If the
on-chip temperature reaches a predetermined value, the DC/
DC will shutdown. This effectively gives indefinite short
circuit protection for the DC/DC.
The DCP0115 offers up to 1W of unregulated output power
from a 15V input source with a typical efficiency of 76%.
This is achieved through highly integrated packaging tech-
nology and the implementation of a custom power stage and
control IC.
SYNCHRONIZATION
Any number of DCP01 family devices can be synchro-
nized by connecting the SYNCIN pins on the devices
together (see Figure 1). All the DCP01 devices will then
self-synchronize.
POWER STAGE
This uses a pull-pull, center-tapped topology switching at
400kHz (divide by 2 from 800kHz oscillator).
This same synchronization method applies to any VIN ver-
sion of the DCP01 family, allowing synchronization of
various VOUT and VIN DC/DCs.
OSCILLATOR AND WATCHDOG
The on-board 800kHz oscillator provides the switching
frequency via a divide by 2 circuit and allows synchroniza-
tion via the SYNCIN pins. To synchronize any number of
DCP0115 family of devices, simply tie the SYNCIN pins
together (see the Synchronization section). The watchdog
circuitry protects the DC/DC against a stopped oscillator and
checks the oscillator frequency which will shut down the
output stage if it drops below a certain threshold—i.e., it will
be tri-stated after approximately 10µs.
The SYNCOUT pin gives an unrectified 400kHz signal from
the transformer. This can be used to set the timing of external
circuitry on the output side. In noise sensitive applications
any pick-up from the SYNCOUT pin can be minimized by
putting a guard ring round the pin (see Figure 2).
+5V
+15V
1
2
14
C5
470nF
VS
0V
SYNCIN
SYNCIN
SYNCIN
Bottom View
1 per DCP01
FIGURE 2. SYNCOUT Guard Ring.
DCP0115xxx
5
6
7
0V
+Out 1
–Out 1
0V
C1
470nF
DIVIDE BY 2 RESET
+VOUT
–VOUT
Isolated DC/DC converter performance normally suffers
after power reset. This is because a change in the steady state
transformer flux creates an offset after power-up. The DCP01
family does not suffer from this problem. This is achieved
through a patented(1) technique employed on the divide by 2
reset circuitry resulting in no change in output phase after
power interruption.
8
C2
470nF
+5V
+15V
1
2
14
VS
0V
C6
470nF
DCP0105xxx
5
6
7
0V
CONSTRUCTION
0V
C3
470nF
The DCP0115’s basic construction is the same as standard
ICs. There is no substrate within the molded package. The
DCP0115 is constructed using an IC, rectifier diodes, and a
wound magnetic toroid on a leadframe. As there is no solder
within the package, the DCP0115 does not require any
special PCB assembly processing. This results in an isolated
DC/DC with inherently high reliability.
Out+
+Out 2
8
1
2
14
VS
0V
DCP0105xxx
5
6
7
0V
0V
ADDITIONAL FUNCTIONS
DISABLE/ENABLE
C4
470nF
Out+
+Out 3
8
The DCP0115 can be disabled or enabled by driving the
SYNCIN pin with an open drain CMOS gate. If the SYNCIN
pin is pulled low, the DCP0115 will disable. The disable time
depends on the output loading but the internal shutdown takes
FIGURE 1. Standard Interface.
®
7
DCP0115
up to 10µs. Making the gate open drain will re-enable the
DCP0115. However, there is a trade-off in using this function;
the DCP0115 quiescent current may increase and the on-chip
oscillator may run slower. This degradation in performance is
dependent on the external CMOS gate capacitance, therefore
the smaller the capacitance, the lower the performance de-
crease. Driving the SYNCIN pin with a CPU type tri-state
output, which has a low output capacitance, offers the lowest
reduction in performance.
DECOUPLING
Ripple Reduction
The high switching frequency of 400kHz allows simple
filtering. To reduce ripple, it is recommended that 0.47µF
capacitors are used on VS and VOUT (see Figure 3). Dual
outputs should both be decoupled to pin 5. In applications
where power is supplied over long lines and output loading
is high, or, there is significant inductance at the output, it
may be necessary to use a 2.2µF capacitor on the input to
insure startup.
There is no restriction on the size of the output capacitor used
to reduce ripple. The DCP0115 will start into any capacitive
load. Low ESR capacitors will give the best reduction.
+15V
1
VS
0V
C1
0.47µF
2
EXTERNAL SYNCHRONIZATION
DCP0115
The DCP0115 can be synchronized externally if required
using a simple external interface. Figure 4 shows a universal
interface using a 4066 quad switch. The CTL and SYNCON
pins are used to select external synchronization or self-
synchronization.
5
6
7
0V
+VOut
–VOut
C2
0.47µF
R1
820Ω
R2
1kΩ
C3
0.47µF
R3
820Ω
R4
1kΩ
This interface can also be used to stop (disable) the DCP0115.
CTL
SYNCON
FUNCTION
1
—
0
1
0
1
External Sync
Self-Sync
Device Stop
FIGURE 3. DCP011515 Fully Loaded.
+15V
+5V
+15V
1
14
VCC
SYNC
2
C6
470nF
C5
470nF
(One Per
DC/DC)
0V
0V
DCP0115xxx
+5V
0V
5
6
7
0V
+Out 1
–Out 1
0V
C1
470nF
R1
33kΩ
+VOUT
–VOUT
8
C2
470nF
I/O1A
U1
+5V
I/O1B
CONT
CTL
1
2
14
VCC
0V
SYNC
0V
FREQ IN
DCP0105xxx
I/O1A
I/O1B
U3
5
6
7
0V
0V
C3
470nF
CONT
+VOUT
+Out 2
8
I/O1A
I/O1B
U4
CONT
R2
33kΩ
0V
I/O1A
I/O1B
U5
1
2
14
VCC
0V
SYNC
CONT
SYNC ON
R3
33kΩ
4066
0V
DCP0105xxx
5
6
7
0V
0V
C4
470nF
+VOUT
+Out 3
8
FIGURE 4. Universal Interface.
®
8
DCP0115
Connecting the DCP0115 in Series
1. To predict the output voltage at 100% load take the measured
or specified voltage at 75% load and multiply by
(1 + Load Reg 75% to 100%). For example a DCP011512DP
typical +VOUT at 100% load will be 12V x (1 – 7%) = 11.2V.
Multiple DCP01 isolated 1W DC/DC converters can be
connected in series to provide non-standard voltage rails.
This is possible by utilizing the floating outputs provided by
the DCP01’s galvanic isolation. For example, the output on
dual output DCP01 versions can be connected in series to
provide 2 times the magnitude of VOUT (see Figure 5). In this
example, a dual 12V DCP011512D is connected to provide
a 24V rail.
2. To predict the output voltage at 25% load take the measured
or specified voltage at 75% load and multiply by
(1 + Load Reg 25% to 75%). For example a DCP011512DP
typical +VOUT at 25% load will be 12V x (1 + 5%) = 12.6V.
To then estimate the voltage at 10% load take the previously
calculated +VOUT at 25% load and multiply by (1 + Load Reg
10% to 25%). In this case the typical +VOUT at 10% load will
be 12.6V x (1 + 10%) = 13.9V.
Connecting the DCP0115 in Parallel
If the output power from one DCP0115 is not sufficient, it
is possible to parallel the outputs of multiple DCP0115s (see
Figure 6). Again, the SYNC feature allows easy synchroni-
zation to prevent power-rail beat frequencies at no additional
filtering cost.
To obtain predictions for loads other than those specified
assume the VOUT versus load characteristic is linear between
the load points and calculate accordingly. The 10% to 100%
load specification guarantees the maximum voltage excursion
for any load between 10% to 100% with respect to VOUT at
75% load.
PREDICTING OUTPUT VOLTAGE VERSUS LOAD
The above does not take into consideration line regulation and
assumes a nominal input voltage. The 1:1 line regulation of the
DCP01 family means that a percentage change in the input
will give a corresponding percentage change in the output.
The Load Regulation specifications are calculated as fol-
lows:
CONDITION
CALCULATION
10% to 100% Load
10% to 25% Load
10% to 75% Load
75% to 100% Load
(VOUT at 10% load – VOUT at 100% load)/ VOUT at 75% load
(VOUT at 10% load – VOUT at 25% load)/ VOUT at 25% load
(VOUT at 10% load – VOUT at 75% load)/ VOUT at 75% load
(VOUT at 75% load – VOUT at 100% load)/ VOUT at 75% load
VSUPPLY
+VOUT
VS
+VOUT
24V
–VOUT
–VOUT
0V
DCP
01
0V
COM
FIGURE 5. Connecting the DCP0115 in Series.
VSUPPLY
+VOUT
+VOUT
VS
SYNCIN
0V
0V
DCP
01
–VOUT
VS
+VOUT
0V
0V
DCP
01
SYNCIN
0V
–VOUT
–VOUT
COM
FIGURE 6. Connecting Multiple DCP0115s in Parallel.
®
9
DCP0115
15.24 (0.600)
SIP DC/DC
DCP01xx
11.8 (0.464)
+VIN
–VIN
1.9 (0.075)
0V
+VOUT
–VOUT
2.54 (0.100)
14-Pin
1.2 (0.047)
All Leads on 2.54mm Pitch
Dimensions in mm (inches)
FIGURE 8. PCB Pad Size and Placement for “U” Package.
FIGURE 7. PCB Layout for DCP0115 and Competitive SIP
DC/DC.
®
10
DCP0115
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500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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