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PDF ( 数据手册 , 数据表 ) DCP0124

零件编号 DCP0124
描述 Miniature 24V Input/ 1W Isolated UNREGULATED DC/DC CONVERTERS
制造商 Burr-Brown Corporation
LOGO Burr-Brown Corporation LOGO 


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DCP0124 数据手册, 描述, 功能
® DCP0124
DCP0124
DCP0124
Series
Miniature 24V Input, 1W Isolated
UNREGULATED DC/DC CONVERTERS
FEATURES
q STANDARD JEDEC PLASTIC PACKAGE
q LOW PROFILE: 0.15" (3.8mm)
q SYNCHRONIZABLE
q OUTPUT SHORT CIRCUIT PROTECTION
q THERMAL SHUTDOWN
q STARTS INTO ANY CAPACITIVE LOAD
q EFFICIENCY: 76% (±15V Out)
q 1000Vrms ISOLATION
q 400kHz SWITCHING
q 93 MILLION HOURS MTTF
q AVAILABLE IN TAPE AND REEL
DESCRIPTION
The DCP0124 family is a series of high efficiency,
24V 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.
The DCP01 family is implemented in standard-molded
IC packaging, giving outlines suitable for high volume
assembly.
APPLICATIONS
q POINT OF USE POWER CONVERSION
q GROUND LOOP ELIMINATION
q DATA ACQUISITION
q INDUSTRIAL CONTROL AND
INSTRUMENTATION
q TEST EQUIPMENT
800kHz
Oscillator
SYNCIN
÷2
Reset
Watch-dog/
start-up
Power
Stage
SYNCOUT
VOUT
0V
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
©1997 Burr-Brown Corporation
PDS-1383C
Printed in U.S.A. February, 1999







DCP0124 pdf, 数据表
Connecting the DCP0124 in Series
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.
Connect the positive VOUT from one DCP01 to the negative
VOUT (0V) of another (see Figure 5). If the SYNCIN pins are
tied together, the self-synchronization feature of the DCP01
will prevent beat frequencies on the voltage rails. The SYNC
feature of the DCP01 allows easy series connection without
external filtering which is necessary in competing solutions.
The outputs on dual output DCP01 versions can also be
connected in series to provide 2 times the magnitude of
VOUT (see Figure 6). For example, a dual 15V DCP012415D
could be connected to provide a 30V rail.
Connecting the DCP0124 in Parallel
If the output power from one DCP0124 is not sufficient, it
is possible to parallel the outputs of multiple DCP01s (see
Figure 7). Again, the SYNC feature allows easy synchroni-
zation to prevent power-rail beat frequencies at no additional
filtering cost.
PREDICTING OUTPUT VOLTAGE VERSUS LOAD
The Load Regulation specifications are calculated as fol-
lows:
CONDITION
10% to 100% Load
10% to 25% Load
10% to 75% Load
75% to 100% Load
CALCULATION
(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
1. To predict the output voltage at 100% load take the mea-
sured or specified voltage at 75% load and multiply by
(1 + Load Reg 75% to 100%). For example a DCP012405P
typical VOUT at 100% load will be 5V x (1 – 4%) = 4.8V.
2. To predict the output voltage at 10% load take the mea-
sured or specified voltage at 75% load and multiply by
(1 + Load Reg 10% to 75%). For example a DCP012405P
typical VOUT at 10% load will be 5V x (1 + 9%) = 5.4V.
3. To predict the output voltage at 25% load on higher VOUT
versions take the measured or specified voltage at 75%
load and multiply by (1 + Load Reg 25% to 75%). For
example a DCP012415DP typical +VOUT at 25% load will
be 12V x (1 + 8%) = 13.0V. 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 13.0V
x (1 + 11%) = 14.4V.
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.
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.
VSUPPLY
COM
VS VOUT 1
SYNCIN DCP 01
0V 0V
VS VOUT 2
SYNCIN DCP 01
0V 0V
FIGURE 5. Connecting the DCP0124 in Series.
VOUT1 + VOUT 2
®
DCP0124
8














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