RDD08U SERIES
DC - DC CONVERTER 6.6 ~ 8.1W SINGLE & DUAL OUTPUT FEATURES
LOW COST 2:1 WIDE INPUT RANGE I/O ISOLATION INPUT Pi FILTER SHORT CIRCUIT PROTECTION HIGH PERFORMANCE UL/cUL/TUV/CE
MODEL LIST
MODEL NO. INPUT OUTPUT OUTPUT OUTPUT VOLTAGE WATTAGE VOLTAGE CURRENT Single Output Models
9~18 VDC 9~18 VDC 9~18 VDC 9~18 VDC 18~36 VDC 18~36 VDC 18~36 VDC 18~36 VDC 35~75 VDC 35~75 VDC 35~75 VDC 35~75 VDC 6.6 WATTS 7.5 WATTS 8 WATTS 8.1 WATTS 6.6 WATTS 7.5 WATTS 8 WATTS 8.1 WATTS 6.6 WATTS 7.5 WATTS 8 WATTS 8.1 WATTS +3.3 VDC + 5 VDC + 12 VDC + 15 VDC +3.3 VDC + 5 VDC + 12 VDC + 15 VDC +3.3 VDC + 5 VDC + 12 VDC + 15 VDC 2000 mA 1500 mA 670 mA 540 mA 2000 mA 1500 mA 670 mA 540 mA 2000 mA 1500 mA 670 mA 540 mA
EFF. (TYP .)
80% 82% 85% 85% 80% 83% 85% 85% 80% 83% 85% 85%
EFF. (min.)
78% 80% 83% 83% 78% 81% 83% 83% 78% 81% 83% 83%
RDD08 - 03S1U RDD08 - 05S1U RDD08 - 12S1U RDD08 - 15S1U RDD08 - 03S2U RDD08 - 05S2U RDD08 - 12S2U RDD08 - 15S2U RDD08 - 03S3U RDD08 - 05S3U RDD08 - 12S3U RDD08 - 15S3U
Dual Output Models
RDD08 - 05D1U RDD08 - 12D1U RDD08 - 15D1U RDD08 - 05D2U RDD08 - 12D2U RDD08 - 15D2U RDD08 - 05D3U RDD08 - 12D3U RDD08 - 15D3U 9~18 VDC 9~18 VDC 9~18 VDC 18~36 VDC 18~36 VDC 18~36 VDC 35~75 VDC 35~75 VDC 35~75 VDC 8 WATTS 8.1 WATTS 8.1 WATTS 8 WATTS 8.1 WATTS 8.1 WATTS 8 WATTS 8.1 WATTS 8.1 WATTS 5 VDC 12 VDC 15 VDC 5 VDC 12 VDC 15 VDC 5 VDC 12 VDC 15 VDC 800 mA 340 mA 270 mA 800 mA 340 mA 270 mA 800 mA 340 mA 270 mA 82% 85% 85% 83% 85% 85% 83% 85% 85% 80% 83% 83% 81% 83% 83% 81% 83% 83%
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RDD08U SERIES
SINGLE & DUAL OUTPUT
CIRCUIT SCHEMATIC
Block diagram for RDD08U series with single output
Vi +
Rectifier Switching Device
Vo +
Vi -
Vo -
PWM Controller ON/OFF
Opto Isolation
Reference & Error Amp.
Block diagram for RDD08U series with dual output
Vi +
Rectifier Switching Device
Vo +
com
Vi -
Rectifier
Vo -
PWM Controller ON/OFF
Opto Isolation
Reference & Error Amp.
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RDD08U SERIES
SINGLE & DUAL OUTPUT
SPECIFICATION
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
o
GENERAL
Characteristics
Switching frequency Isolation voltage Isolation resistance Ambient temperature Case temperature Derating Storage temperature Dimension Cooling Case material
Conditions
Vi nom, Io nom Input / Output Input / Output, @ 500VDC Operating at Vi nom, Io nom Operating at Vi nom, Io nom Vi nom Non operational L20.3 x W31.8 x H10.2 Free air convection Tinplate nickel plated
min.
1,500 1G -40
typ.
280
max.
unit
KHz VDC
+ 71 +100
o o o
C C
See derating curve -40 +100
%/ C C mm
o
INPUT SPECIFICATIONS
Characteristics
Input voltage range
Conditions
Ta min ... T max, Io nom a
min.
9 18 35
typ.
12 48 24 48 30 25 20
max.
18 36 75
unit
VDC VDC VDC mA mA mA
No load input current
Vi nom, Io = 0
12V models 24V models 48V models
Input voltage w/o damage
Io nom
12V models 24V models 48V models
20 40 80 8.7 17.4 31.5
VDC VDC VDC VDC VDC VDC
startup voltage
Io nom
12V models 24V models 48V models
Input filter
Pi type
OUTPUT SPECIFICATIONS
Characteristics
Output voltage accuracy Minimum load Line regulation Load regulation Transient recovery time Temperature coefficient Ripple & noise Efficiency Capacitive Load Vi nom
Conditions
Vi nom, Io nom single output models
dual output models (each output)
min.
0 10
typ.
max.
2
unit
% % %
Io nom, Vi min ...Vi max
Vi nom, Io 0 ...Io nom, single output models Vi nom, Io min ...Io nom, dual output models
0.5 0.5
% % % ms % / oC mV F
1
1 0.02 50 Up to 85%, See model list 3300 2200 470 330 1000
Vi nom, Io nom=1 Vi nom, Io nom
1/2 lo nom
Vi nom, Io nom, BW = 20MHz Vi nom, Io nom, Po / Pi Io nom 3.3Vout models 5.0Vout models 12.0Vout models 15.0Vout models 5Vout models 12Vout models 15Vout models
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RDD08U SERIES
SINGLE & DUAL OUTPUT
CONTROL AND PROTECTION
Input reversed Output short circuit Rated over load protection Remote on/off control Shunt diode built in, external fuse recommended Continuous 110%min....140%max ON : 3....10Vdc or open circuit UL60950-1 EN60950-1 EN61204-3(Class A for EMI) OFF: 0....1.5Vdc or short circuit pin1 and pin2,3
APPROVALS AND STANDARD
UL/cUL TUV CE
MECHANISM & PIN CONFIGURATION
mm [inch]
31.75 [1.25]
20.32 [0.80]
12 3 9 11
15.24 [0.60]
10.2 [0.4] DIA 0.50 [0.02] 5.08 [0.20]
23 22
16
14
2.54 [0.10]
BOTTOM VIEW
PHYSICAL CHARACTERISTICS
CASE SIZE CASE MATERIAL WEIGHT 20.3 x 31.8 x 10.2 mm 0.8 x 1.25 x 0.4 inches Tinplate nickel plated 16 g
PIN ASSIGNMENT
GENERAL
PIN NO. SINGLE DUAL 1
Remote On/Off Remote On/Off
2&3 Vi Vi -
9 N. C. com
11 N. C. Vo -
14 Vo+ Vo+
16 Vo com
22 & 23 Vi+ Vi+
DERATING
100 Power out [ % ]
NATURAL CONVECTION COOLING
0 -40
o
71
100
Ambient Temperature [ C ]
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