13 Amp, 37 Watt, DC/DC Converters
V
OUT
Combinations of 3.3/2.5/1.8/1.5/1.2 Volts
Dual Output
Mixed Voltage, DLV Models
Features
Figure 1. Simplifi ed Schematic
INNOVATION and EX C ELL E N C E
DATEL, Inc., Mansfi eld, MA 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: sales@datel.com Internet: www.datel.com
DATEL's new DLV Series, dual-output, low-voltage DC/DC's provide any output
combination of 3.3V (to 6 Amps) and 2.5/1.8/1.5/1.2V (to 7 Amps). Designed with
two control loops for two independently regulated outputs (both using synchronous
rectifi cation), DLV's are impressively effi cient (to 85%) and able to supply their full 13
Amps of output current (37W for the 3.3V/2.5V models) up to +60C ambient with
no derating (model dependent).
Housed in standard 2" x 2" x 0.5" plastic packages, DLV's offer a number of
functional options (positive or negative polarity on the control pin, addition of second
V
OUT
trim pin, etc.) that make them pin compatible with, yet more powerful than,
virtually all 2" x 2" duals from other leading DC/DC manufacturers.
Assembled using fully automated, SMT-on-pcb techniques, DLV's provide
stable no-load operation, excellent line/load regulation (1%), quick step response
(200sec), and low output ripple/noise (80mVp-p). All devices feature full I/O fault
protection including: input overvoltage and undervoltage shutdown, output overvolt-
age protection, current limiting, short-circuit protection, and thermal shutdown.
All DLV models are Qual/HALT/EMI tested and certifi ed to the operational/
functional-insulation requirements of UL60950/EN60950. 48V
IN
models (75V
IN
max.)
carry the CE mark
Two independently regulated outputs:
3.3V @ 6A; 2.5/1.8/1.5/1.2V @ 7A
13A/37W total output current/power
Input voltage ranges:
10-18V, 18-36V or 36-75V
Standard 2" x 2" package/pinout
High effi ciency (to 85%)
Stable no-load operation
Independent V
OUT
trim pins
Remote on/off control
Fully isolated (1500Vdc); I/O protected
Output overvoltage protection
Thermal shutdown
UL60950/EN60950 certifi ed
CE marked
INPUT
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
SWITCH
CONTROL
V2 OUTPUT
SWITCH
CONTROL
OUTPUT
RETURN
V1 OUTPUT
V1 TRIM
(OPTION)
V2 TRIM
+INPUT
SYNC
(OPTION)
ON/OFF
CONTROL
INPUT UNDERVOLTAGE
AND OVERVOLTAGE
COMPARATORS
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
Contact DATEL.
V1 is the higher of the
two
output
voltages.
PRELIMINARY
1 3 A / 3 7 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S
DLV Series
2
I/O
Connections
Pin
Function
P40 Function
P47 Function
P48 Function
P54
1
+Input +Input +Input +Input
2
Input Input Input Input
3
No Pin
No Pin
No Pin
No Pin
4
On/Off Control
On/Off Control
On/Off Control
On/Off Control
5
+3.3V Trim*
+3.3V Trim*
+2.5V Trim*
+3.3V Trim*
6
+3.3V Output
+3.3V Output
+2.5V Output
+3.3V Output
7
Output Return
Output Return
Output Return
Output Return
8
+2.5V Output
+1.8V Output
+1.8V Output
+1.5V Output
9
+2.5V Trim
+1.8V Trim
+1.8V Trim
+1.5V Trim
Performance Specifi cations and Ordering Guide
DLV-2.5/7-1.8/7-D12
2.5 7 75 TBD 1%
1%
12 10-18 TBD TBD 83% C26, P48
1.8 7 75 TBD 1%
1%
DLV-2.5/7-1.8/7-D24
2.5 7 75 TBD 1%
1%
24 18-36 TBD TBD 83% C26, P48
1.8 7 75 TBD 1%
1%
DLV-2.5/7-1.8/7-D48
2.5 7 75 TBD 1%
1%
48 36-75 TBD TBD 83% C26, P48
1.8 7 75 TBD 1%
1%
DLV-3.3/6-1.2/7-D12
3.3 6 75 TBD 1%
1%
12 10-18 TBD TBD 83% C26, P54
1.2 7 75 TBD 1%
1%
DLV-3.3/6-1.2/7-D24
3.3 6 75 TBD 1%
1%
24 18-36 TBD TBD 83% C26, P54
1.2 7 75 TBD 1%
1%
DLV-3.3/6-1.2/7-D48
3.3 6 75 TBD 1%
1%
48 36-75 TBD TBD 83% C26, P54
1.2 7 75 TBD 1%
1%
DLV-3.3/6-1.5/7-D12
3.3 6 75 TBD 1%
1%
12 10-18 TBD TBD 85% C26, P54
1.5 7 75 TBD 1%
1%
DLV-3.3/6-1.5/7-D24
3.3 6 75 TBD 1%
1%
24 18-36 TBD TBD 85% C26, P54
1.5 7 75 TBD 1%
1%
DLV-3.3/6-1.5/7-D48
3.3 6 75 TBD 1%
1%
48 36-75 TBD TBD 85% C26, P54
1.5 7 75 TBD 1%
1%
DLV-3.3/6-1.8/7-D12
3.3 6 75 TBD 1%
1%
12 10-18 TBD TBD 83% C26, P47
1.8 7 75 TBD 1%
1%
DLV-3.3/6-1.8/7-D24
3.3 6 75 TBD 1%
1%
24 18-36 TBD TBD 83% C26, P47
1.8 7 75 TBD 1%
1%
DLV-3.3/6-1.8/7-D48
3.3 6 75 TBD 1%
1%
48 36-75 TBD TBD 83% C26, P47
1.8 7 75 TBD 1%
1%
DLV-3.3/6-2.5/7-D12
3.3 6 75 TBD 1%
1%
12 10-18 TBD TBD 85% C26, P40
2.5 7 75 TBD 1%
1%
DLV-3.3/6-2.5/7-D24
3.3 6 75 TBD 1%
1%
24 18-36 TBD TBD 85% C26, P40
2.5 7 75 TBD 1%
1%
DLV-3.3/6-2.5/7-D48
3.3 6 75 TBD 1%
1%
48 36-75 TBD TBD 85% C26, P40
2.5 7 75 TBD 1%
1%
Typical at T
A
= +25C under nominal line voltage and "balanced," full-power conditions:
3.3V @ 4.5A/2.5V @ 6A; 3.3V @ 5.2A/1.8V @ 7A; 3.3V @ 5.2A/1.8V @ 7A; 2.5V @ 7A/1.8V @ 7A.
Any combination of rated I
OUT
current, not to exceed 35 Watts of output power.
(See derating graphs.)
Output
Input
R/N (mVp-p)
Regulation
(Max.)
Effi ciency
Package
V
OUT
I
OUT
V
IN
Nom.
Range
I
IN
(Case,
Model
(Volts) (Amps) Typ. Max. Line Load
(Volts) (Volts) (mA) Min. Typ. Pinout)
BOTTOM VIEW
9
8
5
6
7
1
2
4
2.00
(50.08)
1.400
(35.56)
1.200
(30.48)
3 EQ. SP. @
0.400 (10.16)
1.800
(45.72)
0.10
(2.54)
0.10
(2.54)
0.40
(10.16)
PLASTIC CASE
0.040 0.001 DIA.
(1.016 0.025)
0.20 MIN
(5.08)
2.00
(50.08)
0.48
(12.19)
STANDOFF
0.020 (0.51)
DIMENSIONS ARE IN INCHES (MM)
0.200
(5.08)
0.400
(10.16)
Case C26
* Optional pins
Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specicfi ed with
TBD ceramic capacitors.
Tested from no load to 100% load (other output at no load).
Nominal line voltage, no load/balanced full-power condition.
M E C H A N I C A L S P E C I F I C A T I O N S
V
1
Nominal Output Voltage
3.3
DLV
6
-
/
D48
-
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
I
1
Maximum Output Current
Dual Low Voltage/
Mixed-Voltage Series
2.5
7
/
-
T
V
2
Nominal Output Voltage
I
2
Maximum Output Current
Add T and N suffi xes as desired
N
See page 5 for Part Number Structure and ordering details.
PRELIMINAR
Y
DLV Models
1 3 A / 3 7 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S
Performance/Functional Specifi cations
Typical @ T
A
= +25C under nominal line voltage, balanced "full-load" conditions, unless noted.
Input
Input Voltage Range:
D12 Models 10-18 Volts (12V nominal)
D24 Models 18-36 Volts (24V nominal)
D48 Models 36-75 Volts (48V nominal)
Overvoltage Shutdown:
D12 Models 19-23 Volts (21V nominal)
D24 Models 37-42 Volts (40V nominal)
D48 Models 77-81 Volts (79V nominal)
Start-Up Threshold:
D12 Models 9-10 Volts (9.3V nominal)
D24 Models 16.5-18 Volts (17V nominal)
D48 Models 34.5-36 Volts (35V nominal)
Undervoltage Shutdown:
D12 Models 8.5-9.6 Volts (9.3V nominal)
D24 Models 16-17 Volts (16.5V nominal)
D48 Models 33-35 Volts (34V nominal)
Input Current:
Normal Operating Conditions See Ordering Guide
Standby Mode:
Off, OV, UV, Thermal Shutdown 10mA typical
Input Refl ected Ripple Current:
Source Impedance
D12 Models TBD
D24 Models TBD
D48 Models TBD
Internal Input Filter Type Pi (0.039F - 2.2H - TBD)
Reverse-Polarity Protection:
D12 Models TBD minute duration, 6A maximum
D24 Models TBD minute duration, 4A maximum
D48 Models TBD minute duration, 2A maximum
On/Off Control (Pin 4):
D12, D24, D48 Models On = open or TBD to +V
IN
,
I
IN
= TBDA @ TBDV
Off = 0-0.8V, I
IN
= TBD @ 0V
D12N, D24N, D48N Models On = 0-0.8V, I
IN
= TBD @ 0V
Off = open or TBD to +5.5V
I
IN
= TBDA @ TBDV
Output
V
OUT
Accuracy
2.5V/1.8V Models 1.5% / 2% maximum
3.3V/1.5V and 3.3V/1.8VModels 1% / 2% maximum
3.3V/2.5V Models 1% / 1.5% maximum
Minimum Loading Per Specifi cation No load
Ripple/Noise (20MHz BW) See Ordering Guide
Line/Load Regulation See Ordering Guide
Effi ciency See Ordering Guide/Effi ciency Curves
Trim Range
5% each output
Isolation Voltage:
Input-to-Output 1500Vdc
Isolation Capacitance 470pF
Isolation Resistance 100M
Current Limit Inception:
2.5/1.8V Models
2.5V @ 98%V
OUT
, 1.8V @ TBDA TBD Amps
1.8V @ 98%V
OUT
, 2.5V @ TBDA TBD Amps
3.3/1.5V Models
3.3V @ 98.5%V
OUT
, 1.5V @ TBDA TBD Amps
1.5V @ 98%V
OUT
, 3.3V @ TBDA TBD Amps
Output (continued)
Current Limit Inception:
3.3/1.8V Models
3.3V @ 98.5%V
OUT
, 1.8V @ TBDA TBD Amps
1.8V @ 98%V
OUT
, 3.3V @ TBDA TBD Amps 98.5%V
OUT
3.3V/2.5V Models
3.3V @ 98.5%V
OUT,
, 2.5V @ TBDA TBD Amps
2.5V @ 98%V
OUT
, 3.3V @ TBDA TBD Amps
Short Circuit Current:
3.3V Outputs
TBD Amps average, continuous
2.5V Outputs
TBD Amps average, continuous
1.8V Outputs
TBD Amps average, continuous
1.5V Outputs
TBD Amps average, continuous
Overvoltage Protection: Comparator, magnetic feedback
2.5/1.8V Models
TBD/TBD
3.3/1.5V Models
TBD/TBD
3.3/1.8V Models
TBD/TBD
3.3/2.5V Models
TBD/TBD
Maximum Capacitive Loading
2.5/1.8V Models TBD/TBDF
3.3/1.5V Models TBD/TBDF
3.3/1.8V Models TBD/TBDF
3.3/2.5V Models TBD/TBDF
Temperature Coeffi cient 0.02% per C
Dynamic Characteristics
Dynamic Load Response:
2.5/1.8V Models
2.5V (50-100% step to 1.5%V
OUT
) TBD sec maximum
1.8V (50-100% step to 2%V
OUT
) TBD sec maximum
3.3/1.5V Models
3.3V (50-100% step to 1%V
OUT
) TBD sec maximum
1.8V (50-100% step to 2%V
OUT
) TBD sec maximum
3.3/1.8V Models
3.3V (50-100% step to 1%V
OUT
) TBD sec maximum
1.8V (50-100% step to 2%V
OUT
) TBD sec maximum
3.3V/2.5V Models
3.3V (50-100% step to 1%V
OUT
) TBD sec maximum
2.5V (50-100% step to 1.5%V
OUT
) TBD sec maximum
Start-Up Time:
V
IN
to V
OUT
TBD
On/Off to V
OUT
TBD
Switching Frequency
225kHz (TBD kHz)
Environmental
MTBF
D12 Models
TBD hours
D24 Models
TBD hours
D48 Models
TBD hours
Operating Temperature (Ambient):
Without Derating:
2.5/1.8V Models
TBD
3.3/1.8V Models
TBD
3.3V/2.5V Models
TBD
With Derating
To +100C (See Derating Curves)
Case Temperature:
Maximum Operational +100C
For Thermal Shutdown TBD minimum, TBD maximum
Storage Temperature 40 to +120C
3
1 3 A / 3 7 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S
DLV Series
Physical
Dimensions 2" x 2" x 0.5" (50.8 x 50.8 x 12.7mm)
Case Material Diallyl phthalate, UL94V-0 rated
Pin Material Brass, solder coated
Weight: TBD
Primary to Secondary Insulation Level Operational
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models 23 Volts
D2A Models 42 Volts
D48 Models 81 Volts
Transient (100msec): D12 Models 25 Volts
D24 Models 50 Volts
D48 Models 100 Volts
Input Reverse-Polarity Protection
Input Current must be limited. TBD
minute duration. Fusing recommended.
D12A Models
6 Amps
D24A Models
4 Amps
D48A Models
2 Amps
Output Current
Current limited. Devices can withstand
an indefi nite output short circuit.
On/Off Control (Pin 4) Max. Voltages
Referenced to Input (pin 2)
No Suffi x
+V
IN
"N" Suffi x
+8 Volts
Sync Control (Pin 3) Max. Voltages
"S" Suffi x
+5.7 Volts
Storage Temperature
40 to +120C
Lead Temperature (Soldering, 10 sec.) +300C
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifi cations Table is not implied, nor recommended.
4
Figure 2. Trim Connections Using A Trim Pot
Figure 3. Trim Connections To Decrease Output Voltages Using Fixed Resistors
All models are specifi ed with external TBD ceramic output capacitors.
See Technical Notes/Graphs for details.
Devices may be order with opposite polarity. See Part Number Suffi xes and Technical Notes
for details.
Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
may cause permanent damage.
Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
On/Off control is designed to be driven with open collector or by appropriate voltage
levels. Voltages must be referenced to the Input (pin 2).
Demonstrated MTBF available on request.
Trim function for the higher of two voltages available with "T" suffi x. See Part Number
Suffi xes and Technical Notes for details.
+3.3V
LOAD
INPUT
ON/OFF
CONTROL
+INPUT
+3.3V OUTPUT
OUTPUT
RETURN
+2.5V OUTPUT
+2.5V TRIM
7
8
1
4
9
5
6
3
2
+2.5V
LOAD
20k
5-22
TURNS
20k
5-22
TURNS
+3.3V TRIM *
SYNC *
* OPTIONAL PIN
+3.3V
LOAD
INPUT
ON/OFF
CONTROL
+INPUT
+3.3V OUTPUT
OUTPUT
RETURN
+2.5V OUTPUT
+2.5V TRIM
7
8
1
4
9
5
6
3
2
+2.5V
LOAD
R
TRIM DOWN
R
TRIM DOWN
+3.3V TRIM *
SYNC *
* OPTIONAL PIN
T E C H N I C A L N O T E S
Trimming Output Voltages
These DLV converters have a trim capability (pins 9 & 5) that allow users
to independently adjust the output voltages 5%. (Note: pin 5 is an option,
see ordering information.) Adjustments to the output voltages can be accom-
plished via a trim pot, Figure 2, or a single fi xed resistor as shown in Figures
3 and 4. A single fi xed resistor can increase or decrease the output voltage
depending on its connection. Fixed resistors should have absolute TCR's less
than 100ppm/C to minimize sensitivity to changes in temperature.
A single resistor connected from the Trim pin 9 to +Output (pin 8), see Figure
3, will decrease the lower output voltage. A resistor connected from Trim pin 9
to Output Return (pin 7) will increase the lower output voltage. See Figure 4.
Similarly, the higher output voltage can be adjusted using a single resistor
connected from the Trim (pin 5) to +Output (pin 6) or to Output Return (pin
7). See Figures 3 and 4.
25.5
DOWN
R
T
(k
) =
3.3 V
O
3.48(V
O
1.577)
L
N
L
N
17.4
DOWN
R
T
(k
) =
2.5 V
O
2.41(V
O
1.18)
L
N
L
N
2.5 Volt Trim Down
14.17
DOWN
R
T
(k
) =
1.8 V
O
1.73(V
O
0.86)
L
N
L
N
1.8 Volt Trim Down
3.3 Volt Trim Down
On/Off Control
The primary-side, remote On/Off Control function (pin 4) can be specifi ed to
operate with either positive or negative polarity. Positive polarity devices (no
suffi x) are enabled when pin 4 is left open or pulled high (+TBDV to +TBDV
with respect to Input). Positive polarity devices are disabled when pin 4 is
pulled low (0-0.8V with respect to Input). Negative polarity devices are off
when pin 4 is high/open and on when pin 2 is pulled low.
For applications where power sequencing is critical, the DLV series can be
confi gured such that the On/Off Control pin will enable/disable only the higher
of the two output voltages. Contact DATEL for more information.
DLV Models
1 3 A / 3 7 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S
89
88
87
86
85
84
83
82
81
80
DLV-3.3/6-2.5/7-D48TN Efficiency vs. Load and V
IN
36
39
42
45
48
51
54
57
60
63
66
69
72
75
V
IN
(Volts)
Efficienc
y (
%
)
I
O
= 4A/4A
I
O
= 5A/5A
I
O
= 6A/6A
I
O
= 7A/6A
90
86
82
78
74
70
66
62
DLV-3.3/6-2.5/7-D48TN Efficiency vs. Line and Load
0.60
1.68
2.76
3.84
4.92
6
Load Current (Amps)
Efficienc
y (
%
)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
Figure 4. Trim Connections To Increase Output Voltages Using Fixed Resistors
+3.3V
LOAD
+3.3V TRIM *
INPUT
SYNC *
ON/OFF
CONTROL
+INPUT
* OPTIONAL PIN
+3.3V OUTPUT
OUTPUT
RETURN
+2.5V OUTPUT
+2.5V TRIM
7
8
1
4
9
5
6
3
2
+2.5V
LOAD
R
TRIM UP
R
TRIM UP
P A R T N U M B E R S T R U C T U R E
V
1
Nominal Output Voltage
3.3
DLV
6
-
/
D48
-
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
I
1
Maximum Output Current
Dual Low Voltage/
Mixed-Voltage Series
2.5
7
/
-
T
V
2
Nominal Output Voltage
I
2
Maximum Output Current
Add T and N suffi xes
as desired
N
Part Number Suffi xes
Standard DLV DC/DC's provide a Trim function (Pin 9) for the lower
of the two output voltages. A Trim pin (Pin 5) for the higher voltage can
be added by indicating a "T" suffi x. An "N" suffi x indicates that the On/Off
Control function incorporates negative polarity logic.
No Suffi x Pins 5 not installed, positive polarity On/Off Control
T Suffi x Pin 5 added for higher voltage Trim option
N Suffi x Negative polarity On/Off Control
Note: Resistor values are in k
. Accuracy
of adjustment is subject to
tolerances of resistors and fac-
tory-adjusted output accuracy.
V
O
= desired output voltage.
5
25.5
UP
R
T
(k
) =
V
O
3.3
5.88
L
N
L
N
17.4
UP
R
T
(k
) =
V
O
2.5
2.84
L
N
L
N
2.5 Volt Trim Up
14.17
UP
R
T
(k
) =
V
O
1.8
1.49
L
N
L
N
1.8 Volt Trim Up
3.3 Volt Trim Up
T Y P I C A L P E R F O R M A N C E C U R V E S
1 3 A / 3 7 W , D U A L O U T P U T , M I X E D - V O L T A G E D C / D C C O N V E R T E R S
DLV Series
Output P
o
wer (watts)
Ambient Temperature (
C)
40
35
30
25
20
15
10
5
0
40
10
0
10
20
30
40
50
60
70
80
90
100
DLV-3.3/6-2/5/7-D48TN Output Power vs. Ambient Temperature
(V
IN
nominal, natural convection air flow.)
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do
not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01
DATEL GmbH Mnchen, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com Email: sales@datel.com
ISO 9001 REGISTERED
INNOVATION and EX C ELL E N C E
DS-0490 11/01
6
T E M P E R A T U R E D E R A T I N G
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