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PDF ( 数据手册 , 数据表 ) DCP0115

零件编号 DCP0115
描述 Miniature 15V Input/ 1W Isolated UNREGULATED DC/DC CONVERTERS
制造商 Burr-Brown Corporation
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DCP0115 数据手册, 描述, 功能
® DCP0115
DCP0115
DCP0115
Series
Miniature 15V 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% (at Full Load)
q 1000Vrms ISOLATION
q 400kHz SWITCHING
q 93 MILLION HOURS MTTF
q AVAILABLE IN TAPE AND REEL
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.
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
–VOUT
0V
PSU
Thermal
Shutdown
IBIAS
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







DCP0115 pdf, 数据表
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.
R1
820
R2
1k
C2
0.47µF
R3
820
+15V
C1
0.47µF
1
VS
2
0V
DCP0115
R4
1k
5
0V
6
+VOut
7
–VOut
C3
0.47µF
FIGURE 3. DCP011515 Fully Loaded.
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.
EXTERNAL SYNCHRONIZATION
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.
This interface can also be used to stop (disable) the DCP0115.
CTL
1
0
SYNCON
1
0
1
FUNCTION
External Sync
Self-Sync
Device Stop
0V
+Out 1
–Out 1
0V
+Out 2
0V
+Out 3
+15V
1
VCC
2
0V
14
SYNC
0V
DCP0115xxx
C1
470nF
5
6
C2 7
470nF
0V
+VOUT
–VOUT
8
+5V
1
VCC
2
0V
14
SYNC
C3
470nF
DCP0105xxx
5
0V
6
+VOUT
7
8
1
VCC
2
0V
14
SYNC
C4
470nF
DCP0105xxx
5
0V
6
+VOUT
7
8
+5V +15V
(One Per
DC/DC)
C6
470nF
C5
470nF
+5V 0V
R1
33k
I/O1A
I/O1B
U1
CONT
0V
CTL
FREQ IN
I/O1A
I/O1B
U3
CONT
I/O1A
U4
I/O1B
CONT
R2
33k
0V
I/O1A
U5
I/O1B
CONT
SYNC ON
4066
0V
R3
33k
FIGURE 4. Universal Interface.
®
DCP0115
8














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