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參數(shù)資料
| 型號(hào)： | DB2805S/F |
| 廠商： | MS KENNEDY CORP |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 20 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | POWER, HIGH PROFILE, DIP-12 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 121K |
| 代理商： | DB2805S/F |
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
33
B
DB2805S
USA
BeO
TE949311
HI-REL DESIGN
SURFACE MOUNT MAGNETICS
WELDED HERMETIC PACKAGE
LOW INTERNAL TEMPERATURE GRADIENTS
ALL CERAMIC CAPACITORS
WITHSTANDS 5000G
OTHER FEATURES—SINGLE OUTPUT
NO DERATING — –55
° C to +125° C
OUTPUT VOLTAGE ADJUSTMENT STANDARD
REMOTE SHUTDOWN
DESCRIPTION
The DB2800S series of DC-DC converters provides the
ruggedness, reliability and features required to meet the
advanced design challenges of today’s hi-rel market. This has
been accomplished using a new package pioneered by Apex
having very low thermal gradients, excellent hermeticity and
high voltage isolation. The use of advanced substrate and
reflow soldering techniques during construction results in a
rugged, cost-effective pin solderable package.
The DB2800S hybrid converter series utilizes all ceramic
capacitors and surface mount magnetics to provide reliable
operation at all operating temperatures while surviving very
high G forces.
DB2800S series standard features include kelvin sense,
indefinite short circuit protection, remote shutdown, output
fault monitoring, turn on voltage point adjustment, switching
frequency synchronization of up to 3 units using no external
components and pi-network input filtering. An output voltage
adjustment/load compensation pin is also standard, however
a DB2800S series converter may be ordered without this
feature (/F option)
Fault tolerant design protects these converters from most
external circuit faults. The output and output adjust pins will
withstand +35V while the shutdown and all synchronization
pins will withstand +50V protecting the converters from a
variety of system or board faults, i.e. solder bridges, etc.
Unique load fault protection circuitry allows this converter to
pull up loads having difficult static load line characteristics and
allows short term load excursions significantly beyond ratings
in most applications.
The DB2800 series is a current mode push-pull topology
converter which operates at a switching frequency of 500kHZ.
Internal filtering of both input and output eliminates the need for
external capacitors in many applications.
The 12-pin MO-127 High Profile Power Dip package (see
Package Outlines) allows connection to a heatsink and is
hermetically sealed and isolated from the internal circuits.
Please see the package outlines dimension section for dimen-
sions and recommended mounting torque. The use of com-
pressible isolation washers may void the warranty.
1
2
3
4
5
6
12
11
10
9
8
7
TOP
VIEW
– INPUT
TIMING 2
TIMING 1
CASE
– SENSE
+ SENSE
+ INPUT
SHUTDOWN +
CLOCK
ADJUST/COMP*
* Optional N/C on DB2800S /F
– OUTPUT
+ OUTPUT
P W M
CURRENT MODE
CONTROLLER
ERROR AMPLIFIER
REFERENCE AND
ISOLATION
8
7
5
6
1
2
3
10
11
12
4
BLOCK DIAGRAM
EXTERNAL CONNECTIONS
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
MICROTECHNOLOGY
DB2800S 20W SERIES DC-DC CONVERTERS
DB2803SDB2805SDB2812SDB2815S
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