CHINFA TDD25-12D3

TDD25 SERIES
DC - DC CONVERTER
23 ~ 25W SINGLE & DUAL OUTPUT
FEATURES
‧EFFICIENCY UP TO 86%
‧2:1 & 3:1 WIDE INPUT RANGE
‧I/O ISOLATION
‧INPUT Pi FILTER
‧SHORT CIRCUIT PROTECTION
‧HIGH PERFORMANCE
‧2 YEARS WARRANTY
MODEL LIST
MODEL NO.
INPUT
EFF.
EFF. CAPACITOR
INPUT
OUTPUT OUTPUT OUTPUT
LOAD
CURRENT
VOLTAGE
WATTAGE VOLTAGE CURRENT (min.) (typ.) (max.)
(typ.)
Single Output Models
TDD25 - 03S2
18~60 VDC
1.17 A
23 WATTS
+3.3 VDC
7000 mA
78%
80%
3500μF
TDD25 - 05S2
18~60 VDC
1.20 A
25 WATTS
+ 5 VDC
5000 mA
84%
86%
3500μF
TDD25 - 12S2
18~60 VDC
1.13 A
24 WATTS
+ 12 VDC
2000 mA
84%
86%
470μF
TDD25 - 15S2
18~60 VDC
1.18 A
25 WATTS
+ 15 VDC
1700 mA
84%
86%
300μF
TDD25 - 03S3
35~75 VDC
0.58 A
23 WATTS
+3.3 VDC
7000 mA
78%
80%
3500μF
TDD25 - 05S3
35~75 VDC
0.60 A
25 WATTS
+ 5 VDC
5000 mA
84%
86%
3500μF
TDD25 - 12S3
35~75 VDC
0.56 A
24 WATTS
+ 12 VDC
2000 mA
84%
86%
470μF
TDD25 - 15S3
35~75 VDC
0.59 A
25 WATTS
+ 15 VDC
1700 mA
84%
86%
300μF
Dual Output Models
TDD25 - 12D2
18~60 VDC
1.11 A
25 WATTS
± 12 VDC
± 1000 mA
84%
86%
± 220μF
TDD25 - 15D2
18~60 VDC
1.21 A
25 WATTS
± 15 VDC
± 850 mA
84%
86%
± 100μF
TDD25 - 12D3
35~75 VDC
0.59 A
25 WATTS
± 12 VDC
± 1000 mA
84%
86%
± 220μF
TDD25 - 15D3
35~75 VDC
0.61 A
25 WATTS
± 15 VDC
± 850 mA
84%
86%
± 100μF
www.chinfa.com
2010.02.09
[email protected]
P1
TDD25 SERIES
SINGLE & DUAL OUTPUT
SPECIFICATION
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
GENERAL
Characteristics
Conditions
Switching frequency
Isolation voltage
Vi nom, Io nom
Input - Output
Isolation resistance
Isolation capacitance
Input - Output, @ 500VDC
Ambient temperature
100KHz / 1V
Vi nom,
Io nom
MΩ
1000
-25
12V, 15V & dual output models
-25
Derating
Vi nom
Non operational
Vi nom, Io nom
+ 61
+ 71
PF
o
C
o
C
+100
o
-40
+100
o
20
95
C
See derating curve
L76.2 x W50.8 x H12
C
% RH
% / oC
mm
701800
Hours
Vi nom, Io min
± 0.02
Dimension
MTBF
Cooling
VDC
100
3.3V & 5V output models
unit
KHz
1500
Operating at Vi nom, Io nom
Temperature coefficient
max.
300
Case temperature
Storage temperature
Relative humidity
typ.
min.
Be1lcore issue [email protected] oC, GB
Free air convection
INPUT SPECIFICATIONS
Characteristics
Input voltage range
No load input current
min.
typ.
18
24
60
VDC
35
48
75
VDC
24V models
20
mA
48V models
15
mA
24V models
65
80
VDC
Conditions
Ta min ...Ta max, Io nom
Vi nom, Io=0
Input voltage w/o damage
Io nom
Startup voltage
Io nom
48V models
Input filter
max.
unit
VDC
24V models
16
VDC
48V models
30
VDC
Pi type
OUTPUT SPECIFICATIONS
Characteristics
Conditions
Output voltage accuracy
Vi nom, Io nom
Minimum load
Vi nom
single output models
dual output models (each output)
Line regulation
Load regulation
min.
typ.
Startup time
Transient recovery time
Vi nom, Io nom
Ripple & noise
Voltage trim range *
%
%
Vi nom, 1~0.5 Io nom
Vi nom, Io nom,
3.3V & 5V models
BW = 20MHz
12V, 15V & dual
Vi nom
Efficiency
Vi nom, Io nom, Po / Pi
±1
%
±2
±5
%
±5
30
%
ms
500
μs
150
mV
Vout x±1%
3.3V model
5V, 12V, 15V & dual
%
20
Vi nom, Io min ... Io nom, dual output models
Aymmetrical load 20% - 100% FL
unit
±2
0
Io nom, Vi min ...Vi max
Vi nom, Io 0 ... Io nom, single output models
Cross regulation (Dual model)
max.
± 5
%
mV
%
%
±10
Up to 86%, See model list and efficiency curve
* NOTE : Pls refer to Fig1 & Table 1 for connection resistance recommended.
CONTROL AND PROTECTION
Remote ON / OFF
ON: opened or 8 ~ 10VDC applied, reference to input GND
OFF: -0.3 ~ 2VDC applied, reference to input GND
Input reversed
Shunt diode built in, external fuse recommended (24Vin : 2A, 48Vin : 1.5A)
Output short circuit
Current limited (Auto-recovery)
Rated over load protection
110%min....140%max
www.chinfa.com
2010.02.09
[email protected]
P2
TDD25 SERIES
SINGLE & DUAL OUTPUT
PHYSICAL CHARACTERISTICS
Case size
76.2 x 50.8 x 12 mm ( 3 x 2 x 0.47 inches )
Case material
Plastic base / Metal case
Weight
105 g
Patting material
Epoxy
MECHANISM & PIN CONFIGURATION
mm [inch]
6.35 [0.25]
63.50 [2.50]
76.20 [3.00]
5.08 [0.20]
6
15.24 [0.60]
2
7
3
8
10.16 [0.40]
10.16 [0.40]
12.00 [0.47]
6.00 [0.24]
10.16 [0.40]
DIA 1.00 [0.04]
50.80 [2.00]
10.16 [0.40]
9
20.32 [0.80]
10.16 [0.40]
5
GENERAL TOLERANCE
0.00[0.00] - 30.00[1.18]
±0.30[0.01]
30.00[1.18] - 120.00[4.72]
±0.50[0.02]
10
BURL AT 4 CORNER
BOTTOM VIEW
PIN ASSIGNMENT
GENERAL
PIN NO.
2
3
5
6
7
8
9
10
SINGLE
Vi -
Vi+
ON / OFF
N. C.
N. C.
Vo -
Vo +
Trim
DUAL
Vi -
Vi+
ON / OFF
Vo -
N. C.
com
Vo +
Trim
CIRCUIT SCHEMATIC
‧Block diagram for TDD25 series with dual output
‧Block diagram for TDD25 series with single output
Vo +
Vi +
Switching
Device
Vi +
Vo +
Rectifier
Rectifier
com
Switching
Device
Vi -
Vo -
Rectifier
Vo -
Vi -
PWM
Controller
Opto Isolation
Reference &
Error Amp.
Trim
PWM
Controller
ON / OFF
Opto Isolation
Reference &
Error Amp.
ON / OFF
Trim
RECOMMENDED CIRCUIT
‧Recommended filter for EN55022 Class B compliance.
L1
‧Recommended EN 55022 Class B filter circuit layout.
C4
+
Vin +
C1
Vo +
TDD25
C2
Vin -
Vo -
C3/C5
‧The commponents used in the above figure, together with the
manufacturer part numbers for these components, are as follows.
C1
C2
C3/C4/C5
L1
TDD25-XXSX
6.8μF / 100V 6.8μF / 100V
MLCC
MLCC
InF / 2KV
MLCC
500μH
Command
Chock
TDD25-XXDX
6.8μF / 100V 6.8μF / 100V
MLCC
MLCC
2.2nF / 2KV
MLCC
500μH
Command
Chock
www.chinfa.com
2010.02.09
[email protected]
P3
TDD25 SERIES
SINGLE & DUAL OUTPUT
DERATING AND EFFICIENCY CURVE
Temperature derating curve
100
Power out [ % ]
12V, 15V & dual
NATURAL
CONVECTION
COOLING
0
-25
3.3V & 5V
61
71
Ambient Temperature [ oC ]
100
Efficiency Vs Input Voltage
TDD25-05S2
Efficiency Vs Output Load
TDD25-05S2
86
84
84
Efficiency [ % ]
Efficiency [ % ]
86
82
80
82
80
78
Vi : 24VDC
Io : Full Load
78
18
24
30
36
42
48
54
76
60
10
20
30
40
Input Voltage (V)
50
60
70
80
90
100
Output Load (%)
Fig. 1 Trim connection
( For Single output )
( For Dual output )
6
6
6
7
7
7
8
Vo -
9
Vo +
10
Trim
Rext 1
8
Vo -
9
Vo +
10
Rext 2
Trim
Vo -
Vo -
7
8
com
9
Vo +
10
6
Rext 1
Trim
8
com
9
Vo +
10
Rext 2
Trim
Table 1 Typical resistor values for various output voltage adjustment settings
Type
TDD25-03SX
Type
TDD25-05SX
Rext 1
Vo nom -2.5%
1KΩ
Vo nom -5%
Rext 2
Vo nom -5%
0Ω
Vo nom -10%
Vo nom +2.5%
Vo nom +5%
6.8KΩ
3.9KΩ
Vo nom +5%
Vo nom +10%
1KΩ
0Ω
1KΩ
0Ω
TDD25-12SX
62KΩ
20KΩ
8.2KΩ
1KΩ
TDD25-15SX
180KΩ
62KΩ
20KΩ
0Ω
TDD25-12DX
100KΩ
51KΩ
10KΩ
1KΩ
TDD25-15DX
180KΩ
68KΩ
10KΩ
0Ω
www.chinfa.com
2010.02.09
[email protected]
P4