Dual Output
Mixed Voltage, DLV Models
37 Watt, Isolated DC/DC Converters
V
OUT
Combinations of 3.3/2.5/1.8/1.5 Volts
Features
Two independently regulated outputs:
3.3V @ 6A; 2.5/1.8/1.5 @ 7A
13A/37W total output current/power
Input voltage ranges:
10-18V, 18-36V or 36-75V
Standard 2" x 2" package/pinout
High efficiency (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 certified
CE marked
Murata’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 (to 7 Amps). Designed with two
control loops for two independently regulated outputs (both using synchronous rec-
tification), DLV’s are impressively efficient (to 85%) and able to supply their full 13
Amps of output current (37W for the 3.3V/2.5V models) up to +60°C 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
(200µsec), 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 certified to the operational/func-
tional-insulation requirements of UL60950/EN60950. 48V
IN
models (75V
IN
max.)
carry the CE mark Selected models include RoHS-5 compliance with the lead
exception.
+INPUT
V1 OUTPUT
–INPUT
SWITCH
CONTROL
OUTPUT
RETURN
INPUT UNDERVOLTAGE
AND OVERVOLTAGE
COMPARATORS
ON/OFF
CONTROL
SYNC
(OPTION)
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
V1 TRIM
➁
(OPTION)
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
V2 TRIM
➀
V2 OUTPUT
SWITCH
CONTROL
➀
Contact
Murata.
➁
V1 is the higher of the
two output voltages.
Figure 1. Simplified Schematic
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DLV Series
1 3 A / 3 7 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
➀
Input
Regulation (Max.)
Line
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
Performance Specifications and Ordering Guide
V
OUT
(Volts)
3.3
1.5
3.3
1.5
3.3
1.5
3.3
1.8
3.3
1.8
3.3
1.8
3.3
2.5
3.3
2.5
3.3
2.5
Model
DLV-3.3/6-1.5/7-D12
DLV-3.3/6-1.5/7-D24
DLV-3.3/6-1.5/7-D48
DLV-3.3/6-1.8/7-D12
DLV-3.3/6-1.8/7-D24
DLV-3.3/6-1.8/7-D48
DLV-3.3/6-2.5/7-D12
DLV-3.3/6-2.5/7-D24
DLV-3.3/6-2.5/7-D48
I
OUT
➁
(Amps)
6
7
6
7
6
7
6
7
6
7
6
7
6
7
6
7
6
7
Output
R/N (mVp-p)
➂
Typ.
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
Max.
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Load
➃
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
V
IN
Nom.
(Volts)
12
24
48
12
24
48
12
24
48
Range
(Volts)
10-18
18-36
36-75
10-18
18-36
36-75
10-18
18-36
36-75
I
IN
➄
(mA)
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Efficiency
Min.
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Typ.
85%
85%
85%
83%
83%
83%
85%
85%
85%
Package
(Case,
Pinout)
C26, P54
C26, P54
C26, P54
C26, P47
C26, P47
C26, P47
C26, P40
C26, P40
C26, P40
➀
Typical at T
A
= +25°C 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.
➁
Any combination of rated I
OUT
current are not to exceed 37 Watts of total output power.
(See derating graphs.)
PA R T N U M B E R S T R U C T U R E
➂
Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specicfied with
TBD ceramic capacitors.
➃
Tested from no load to 100% load (other output at no load).
➄
Nominal line voltage, no load/balanced full-power condition.
Part Number Suffixes
DLV
-
3.3
/
6
-
2.5
/
7
-
D48 T N
-
Y
Dual Low Voltage/
Mixed-Voltage Series
V
1
Nominal Output Voltage
I
1
Maximum Output Current
V
2
Nominal Output Voltage
Add T and N suffixes
as desired
Input Voltage Range:
D12
= 10-18 Volts (12V nominal)
D24
= 18-36 Volts (24V nominal)
D48
= 36-75 Volts (48V nominal)
I
2
Maximum Output Current
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" suffix. An "N" suffix indicates that the On/Off
Control function incorporates negative polarity logic.
No Suffix
Pins 5 not installed, positive polarity On/Off Control
T Suffix
Pin 5 added for higher voltage Trim option
N Suffix
Negative polarity On/Off Control
-Y
RoHS-5 hazardous substance compliance
Note:
Not all model number combinations are
available. Contact
Murata Power Solutions.
M E C H A N I C A L S P E C I F I C AT I O N S
2.00
(50.08)
PLASTIC CASE
0.48
(12.19)
Case C26
0.040 ±0.001 DIA.
(1.016 ±0.025)
0.20 MIN
(5.08)
1.800
(45.72)
0.10
(2.54)
STANDOFF
0.020 (0.51)
I/O Connections
Pin
1
2
3
4
5
6
7
8
9
Function P40
+Input
–Input
No Pin
On/Off Control
+3.3V Trim*
+3.3V Output
Output Return
+2.5V Output
+2.5V Trim
* Optional pins
Function P47
+Input
–Input
No Pin
On/Off Control
+3.3V Trim*
+3.3V Output
Output Return
+1.8V Output
+1.8V Trim
Function P48
+Input
–Input
No Pin
On/Off Control
+2.5V Trim*
+2.5V Output
Output Return
+1.8V Output
+1.8V Trim
Function P54
+Input
–Input
No Pin
On/Off Control
+3.3V Trim*
+3.3V Output
Output Return
+1.5V Output
+1.5V Trim
5
6
0.200
(5.08)
7
1
2
0.400
(10.16)
0.10
(2.54)
8
9
1.400
1.200
(35.56)
(30.48)
3 EQ. SP. @
0.400 (10.16)
2.00
(50.08)
4
0.40
(10.16)
BOTTOM VIEW
DIMENSIONS ARE IN INCHES (MM)
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2
1 3 A / 3 7 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
DLV Models
Output (continued)
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage, balanced "full-load" conditions, unless noted.
➀
Input
Input Voltage Range:
D12 Models
D24 Models
D48 Models
Overvoltage Shutdown:
D12 Models
D24 Models
D48 Models
Start-Up Threshold:
D12 Models
D24 Models
D48 Models
Undervoltage Shutdown:
D12 Models
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, UV, Thermal Shutdown
Input Reflected Ripple Current:
Source Impedance
D12 Models
D24 Models
D48 Models
Internal Input Filter Type
Reverse-Polarity Protection:
D12 Models
D24 Models
D48 Models
On/Off Control
(Pin 4):
➂ ➃ ➅
D12, D24, D48 Models
I
IN
= TBDµA @ TBDV
Off = 0-0.8V, I
IN
= TBD @ 0V
D12N, D24N, D48N Models
Off = open or TBD to +5.5V
I
IN
= TBDµA @ TBDV
V
OUT
Accuracy
3.3V/1.5V and 3.3V/1.8VModels
3.3V/2.5V Models
Minimum Loading Per Specification
Ripple/Noise
(20MHz BW)
Line/Load Regulation
Efficiency
Trim Range
➇
Isolation Voltage:
Input-to-Output
Isolation Capacitance
Isolation Resistance
Current Limit Inception:
3.3/1.5V Models
3.3V @ 98.5%V
OUT
, 1.5V @ TBDA
1.5V @ 98%V
OUT
, 3.3V @ TBDA
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
19-23 Volts (21V nominal)
37-42 Volts (40V nominal)
77-81 Volts (79V nominal)
9-10 Volts (9.3V nominal)
16.5-18 Volts (17V nominal)
34.5-36 Volts (35V nominal)
8.5-9.6 Volts (9.3V nominal)
16-17 Volts (16.5V nominal)
33-35 Volts (34V nominal)
See Ordering Guide
10mA typical
Current Limit Inception:
3.3/1.8V Models
3.3V @ 98.5%V
OUT
, 1.8V @ TBDA
1.8V @ 98%V
OUT
, 3.3V @ TBDA
3.3V/2.5V Models
3.3V @ 98.5%V
OUT,
, 2.5V @ TBDA
2.5V @ 98%V
OUT
, 3.3V @ TBDA
Short Circuit Current:
3.3V Outputs
2.5V Outputs
1.8V Outputs
1.5V Outputs
Overvoltage Protection:
3.3/1.5V Models
3.3/1.8V Models
3.3/2.5V Models
Maximum Capacitive Loading
3.3/1.5V Models
3.3/1.8V Models
3.3/2.5V Models
Temperature Coefficient
Dynamic Load Response:
3.3/1.5V Models
3.3V (50-100% step to 1%V
OUT
)
1.8V (50-100% step to 2%V
OUT
)
3.3/1.8V Models
3.3V (50-100% step to 1%V
OUT
)
1.8V (50-100% step to 2%V
OUT
)
3.3V/2.5V Models
3.3V (50-100% step to 1%V
OUT
)
2.5V (50-100% step to 1.5%V
OUT
)
Start-Up Time:
V
IN
to V
OUT
On/Off to V
OUT
Switching Frequency
TBD Amps
TBD Amps 98.5%V
OUT
TBD Amps
TBD Amps
TBD Amps average, continuous
TBD Amps average, continuous
TBD Amps average, continuous
TBD Amps average, continuous
Comparator, magnetic feedback
TBD/TBD
TBD/TBD
TBD/TBD
TBD/TBDµF
TBD/TBDµF
TBD/TBDµF
±0.02% per °C
Dynamic Characteristics
TBD
TBD
TBD
Pi (0.039µF - 2.2µH - TBD)
TBD minute duration, 6A maximum
TBD minute duration, 4A maximum
TBD minute duration, 2A maximum
On = open or TBD to +V
IN
,
TBD µsec maximum
TBD µsec maximum
TBD µsec maximum
TBD µsec maximum
TBD µsec maximum
TBD µsec maximum
TBD
TBD
225kHz (±TBD kHz)
On = 0-0.8V, I
IN
= TBD @ 0V
MTBF
D12 Models
D24 Models
D48 Models
Environmental
TBD hours
TBD hours
TBD hours
Output
1% / 2% maximum
1% / 1.5% maximum
No load
See Ordering Guide
See Ordering Guide
See Ordering Guide/Efficiency Curves
±5% each output
1500Vdc
470pF
100MΩ
Operating Temperature
(Ambient):
Without Derating:
3.3/1.8V Models
3.3V/2.5V Models
With Derating
Case Temperature:
Maximum Operational
For Thermal Shutdown
Storage Temperature
TBD
TBD
To +100°C (See Derating Curves)
+100°C
TBD minimum, TBD maximum
–40 to +120°C
TBD Amps
TBD Amps
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3
DLV Series
1 3 A / 3 7 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Physical
Dimensions
Case Material
Pin Material
Weight:
2" x 2" x 0.5" (50.8 x 50.8 x 12.7mm)
Diallyl phthalate, UL94V-0 rated
Brass, solder coated
TBD
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 fixed resistor as shown in Figures
3 and 4. A single fixed 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.
Primary to Secondary Insulation Level
Operational
➀
All models are specified with external TBD ceramic output capacitors.
➁
See Technical Notes/Graphs for details.
➂
Devices may be order with opposite polarity. See Part Number Suffixes and Technical Notes
for details.
➃
Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
may cause permanent damage.
➄
Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
➅
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).
➆
Demonstrated MTBF available on request.
➇
Trim function for the higher of two voltages available with "T" suffix. See Part Number
Suffixes and Technical Notes for details.
+3.3V TRIM *
5
6
20kΩ
5-22
TURNS
+3.3V
LOAD
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D2A Models
D48 Models
Transient (100msec): D12 Models
D24 Models
D48 Models
23 Volts
42 Volts
81 Volts
25 Volts
50 Volts
100 Volts
Input Current must be limited. TBD
minute duration. Fusing recommended.
6 Amps
4 Amps
2 Amps
Current limited. Devices can withstand
an indefinite output short circuit.
1
+INPUT
+3.3V OUTPUT
2
–INPUT
OUTPUT
RETURN
7
3
SYNC *
8
20kΩ
5-22
TURNS
+2.5V OUTPUT
+2.5V TRIM
9
+2.5V
LOAD
4
Input Reverse-Polarity Protection
➁
D12A Models
D24A Models
D48A Models
Output Current
➁
On/Off Control (Pin 4) Max. Voltages
Referenced to –Input (pin 2)
No Suffix
"N" Suffix
Sync Control (Pin 3) Max. Voltages
"S" Suffix
Storage Temperature
Lead Temperature
(Soldering, 10 sec.)
ON/OFF
CONTROL
* OPTIONAL PIN
Figure 2. Trim Connections Using A Trim Pot
+3.3V TRIM *
1
+INPUT
+3.3V OUTPUT
5
6
R
TRIM DOWN
+V
IN
+8 Volts
+5.7 Volts
–40 to +120°C
+300°C
2
–INPUT
OUTPUT
RETURN
7
+3.3V
LOAD
3
SYNC *
8
4
+2.5V
LOAD
+2.5V OUTPUT
+2.5V TRIM
9
R
TRIM DOWN
* OPTIONAL PIN
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 Specifications Table is not implied, nor recommended.
ON/OFF
CONTROL
Figure 3. Trim Connections To Decrease Output Voltages Using Fixed Resistors
TECHNICAL NOTES
3.3 Volt Trim Down
On/Off Control
The primary-side, remote On/Off Control function (pin 4) can be specified to
operate with either positive or negative polarity. Positive polarity devices (no
suffix) 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
Murata
for more information.
R
T
DOWN
(kΩ) =
O
O
2.5 Volt Trim Down
R
T
DOWN
(kΩ) =
O
O
1.8 Volt Trim Down
R
T
DOWN
(kΩ) =
O
O
www.murata-ps.com/support
4
L
N
L
1.73(V – 0.86)
N
1.8 – V
L
N
L
2.41(V – 1.18)
N
2.5 – V
L
N
L
3.48(V – 1.577)
N
3.3 – V
–25.5
–17.4
–14.17
1 3 A / 3 7 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
DLV Models
1
+INPUT
+3.3V OUTPUT
6
+3.3V
LOAD
R
T
UP
(kΩ) =
5.88
V
O
– 3.3
2
–INPUT
OUTPUT
RETURN
7
2.5 Volt Trim Up
R
T
UP
(kΩ) =
2.84
V
O
– 2.5
3
SYNC *
8
+2.5V
LOAD
+2.5V OUTPUT
+2.5V TRIM
4
R
TRIM UP
* OPTIONAL PIN
R
T
UP
(kΩ) =
1.49
V
O
– 1.8
Figure 4. Trim Connections To Increase Output Voltages Using Fixed Resistors
TYPICAL PERFORMANCE CURVES
DLV-3.3/6-2.5/7-D48TN Efficiency vs. Load and V
IN
89
88
87
82
Efficiency (%)
Efficiency (%)
86
85
84
83
82
81
80
36
39
42
45
48
51
54
57
60
63
66
69
72
75
V
IN
(Volts)
I
O
= 4A/4A
I
O
= 5A/5A
I
O
= 6A/6A
I
O
= 7A/6A
DLV-3.3/6-2.5/7-D48TN Efficiency vs. Line and Load
90
86
78
74
70
66
62
0.60
1.68
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5
L
N
ON/OFF
CONTROL
9
1.8 Volt Trim Up
L
N
L
N
L
N
L
N
+3.3V TRIM *
5
R
TRIM UP
3.3 Volt Trim Up
L
N
–25.5
–17.4
Note: Resistor values are in kΩ. Accuracy
of adjustment is subject to
tolerances of resistors and fac-
tory-adjusted output accuracy.
V
O
= desired output voltage.
–14.17
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
2.76
3.84
4.92
6
Load Current (Amps)
Embedded System
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