Dual Output BWR Models

Dual Output BWR Models
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Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Typical units
FEATURES
PRODUCT OVERVIEW

Regulated 3.3V and 5V outputs

5V @ 6Amps/3.3V @ 7 Amps capability
For applications requiring 33 watts of power from
5V and 3.3V, DATEL offers a new power sharing
DC/DC converter capable of meeting your output
current requirements. The BWR-5/6-3.3/7-D48
(36-75V input), BWR-5/6-3.3/7-D24 (18-36V
input) and BWR-5/6-3.3/7-D12 (10-18V input)
are fully isolated DC/DC converters capable of
delivering any combination of 5V and 3.3V loading up to a combined total of 33 Watts of output
power.
Housed in a standard 2" x 2" x 0.45" metal
package coated with electrically non-conductive
finish, these converters utilize a shared controlloop system to assure load regulation of ±1% for
3.3V output and ±1.5% for 5V output. All models
include input Pi filtering, input overvoltage and

33 Watts total output power

No-load operation

Available input voltage ranges:
10-18V, 18-36V or 36-75V

Small 2" x 2" x 0.45" package

UL1950 and EN60950-1 safety approvals

mark available (75V-input models)

Continuous short-circuit protection

Fully isolated, 1500Vdc guaranteed

–40 to +100°C operating temperature

Input under and overvoltage shutdown
undervoltage shutdown circuitry, output overvoltage protection, output short-circuit and current
limiting protection, and thermal shutdown.
Each design also provides trim capability and
on/off control function. Fully synchronous output
rectification renders high efficiency and no-load
operation.
BWR power sharing modules offer low ripple
and noise performance, high efficiency (88%),
1500Vdc of isolation voltage, and are fully
specified for –40 to +100°C operation. These
devices meet IEC950, UL1950 and EN6950 safety
standards, including BASIC insulation requirements for “D48” models. CB reports are available
on request. “D48” models are CE marked (meet
LVD requirements).

Output overvoltage protection

Thermal shutdowns
+5V OUTPUT
(5)
+INPUT
(1)
SWITCH
CONTROL
+3.3V OUTPUT
(7)
–INPUT
(2)
ON/OFF
CONTROL
(4)
OUTPUT
RETURN
(6)
PWM
CONTROLLER
ACTIVE
BLEEDER
OPTO
ISOLATION
UV & OV
COMPARATORS
REFERENCE &
ERROR AMP
THERMAL
SHUTDOWN
TRIM
(8)
Typical topology is shown.
Figure 1. Simplified Schematic
For full details go to
www.murata-ps.com/rohs
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MDC_BWR 33W Models.A05 Page 1 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Performance Specifications and Ordering Guide ➀
ORDERING GUIDE SUMMARY
Output
Models
VOUT
(Volts)
IOUT ➁
(Amps)
5
3.3
5
3.3
5
3.3
6
7
6
7
6
7
BWR-5/6-3.3/7-D12
BWR-5/6-3.3/7-D24
BWR-5/6-3.3/7-D48
➀
➁
➂
➃
Input
R/N (mVp-p) ➂
Typ.
Max.
40
95
40
95
40
95
Regulation (Max.) ➆
VIN Nom.
Line
Load ➃ No Load ➅ (Volts)
100
140
100
140
100
140
±1%
±0.5%
±1%
±0.5%
±1%
±0.5%
±1.5%
±1%
±1.5%
±1%
±1.5%
±1%
Typical at TA = +25°C under nominal line voltage and balanced “full-load” conditions (5V @ 3.3A/3.3V @ 5A).
Any combination of 5V/3.3V rated IOUT current, not to exceed 33 Watts of output power. (See derating graphs.)
Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 1µF ceramic output capacitors.
Tested from 10% load to 100% load (other output at 10% load).
±2.5%
±1.5%
±2.5%
±1.5%
±2.5%
±1.5%
Efficiency
Min.
Typ.
Package
(Case,
Pinout)
Range
(Volts)
IIN ➄
(mA)
12
10-18
70/3308
83%
86%
C4,P33
24
18-36
50/1615
85%
88%
C4,P33
48
36-75
25/780
85%
88%
C4,P33
➄ Nominal line voltage, no load/balanced full-power condition.
➅ Tested from no-load to 100% load (other output at no-load).
➆ Output trim may impact 5V load regulation.
PART NUMBER STRUCTURE
Optional Functions
BWR 33 Watt DC/DC’s are designed with an On/Off Control
function with positive polarity in the pin 4 position.
BWR - 5 / 6 - 3.3 / 7 - D48 LX - C
Dual Output/
Mixed-Voltage Series
RoHS-6 Compliance*
V1 Nominal Output Voltage:
5 Volts
L1
L2
Pin length: 0.110 in. (2.79mm) ±0.010
Pin length: 0.145 in. (3.68mm) ±0.010
Optional Functions
Pin length options require a minimum order quantity.
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
I1 Maximum Output Current:
6 Amps
Refer to the last page for additional options.
* Contact MPS for availability.
V2 Nominal Output Voltage:
3.3 Volts
I2 Maximum Output Current:
7 Amps
MECHANICAL SPECIFICATIONS
2.00
(50.80)
0.45
(11.43)
METAL CASE
C04
MetalC4
Case
Case
INSULATED BASE
0.040 ±0.002 DIA
(1.016 ±0.051)
0.20 MIN
(5.08)
1.800
(45.72)
0.10
(2.54)
5
0.200
(5.08)
6
1
2
7
0.400
(10.16)
4
1.200
(30.48)
3 EQ. SP. @
0.400 (10.16)
I/O Connections
Pin Function P33
1
+Input
2
–Input
3
No Pin
4
On/Off Control
5
+5V Output
6
Output Return
7
+3.3V Output
8
Trim
Notes:
For “D12” and “D24” models the
case is connected to pin 2 (–Input).
For “D48” models, the case is
connected to pin 1 (+Input).
2.00
(50.80)
8
0.40
(10.16)
0.100
(2.54)
BOTTOM VIEW
Dimensions in inches (mm)
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MDC_BWR 33W Models.A05 Page 2 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀
Output (continued)
Input
Input Voltage Range:
D12 Models
D24 Models
D48 Models
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
Overvoltage Shutdown: ➁
D12 Models
D24 Models
D48 Models
19-23 Volts (21V nominal)
37-42 Volts (40V nominal)
77-81 Volts (79V nominal)
Start-Up Threshold: ➁
D12 Models
D24 Models
D48 Models
9-10 Volts (9.3V nominal)
16.5-18 Volts (17V nominal)
34-36 Volts (35V nominal)
Undervoltage Shutdown: ➁
D12 Models
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, UV, Thermal Shutdown
Short Circuit Current: ➁
5V Output
3.3V Output
5 Amps average, continuous
6 Amps average, continuous
Overvoltage Protection: ➁
5V Output
3.3V Output
Magnetic feedback
6.8 volts
4.5Volts
Maximum Capacitive Loading
D12 Models
3.3V
5V
D24, D48 Models 3.3V
5V
1000µF
470µF
2000µF
1000µF
Dynamic Characteristics
8.5-9.6 Volts (9.3V nominal)
16-17 Volts (16.5V nominal)
32.5-35 Volts (34V nominal)
Dynamic Load Response ➁
5V (50-100% load step to 4% VOUT)
300µsec maximum
3.3V (50-100% load step to 2.5% VOUT) 300µsec maximum
See Ordering Guide
Start-Up Time ➁
VIN to VOUT
On/Off to VOUT
20msec maximum
15msec maximum
285kHz (±15kHz)
10mA typical
Switching Frequency
Input Reflected Ripple Current:
Source Impedance
D12 Models
D24/D48 Models
<0.1, no external input filtering
200mAp-p (150mAp-p typical)
250mAp-p (225mAp-p typical)
MTBF ➅
Internal Input Filter Type
Pi (0.022µF - 4.7µH - 2.46µF)
Reverse-Polarity Protection: ➁
D12 Models
D24 Models
D48 Models
1 minute duration, 6A maximum
1 minute duration, 4A maximum
1 minute duration, 2A maximum
On/Off Control (Pin 4): ➁ ➂ ➄
D12, D24 & D48 Models
On = open or 13V to +VIN, IIN = 50µA max.
Off = 0-0.8V, IIN = 1mA max.
Output
VOUT Accuracy:
5V Output
3.3V Output
±3% maximum
±1.5% maximum
Minimum Loading Per Specification
No load, see Performance Specifications
Ripple/Noise (20MHz BW) ➁ ➃
See Ordering Guide
Line/Load Regulation ➁
See Ordering Guide
Efficiency
See Ordering Guide / Efficiency Curves
Cross Regulation: ➁
5V Output ([email protected], [email protected]) ±6% maximum
3.3V Output ([email protected], [email protected]) ±0.5% maximum
Trim Range ➁
±5%
Isolation Voltage:
Input-to-Output
Isolation Capacitance
Isolation Resistance
1500Vdc minimum
470pF
100M
Primary to Secondary Insulation Level
D12/D24 Models
Operational
D48 Models
Basic
Temperature Coefficient
±0.02%/per°C
Current Limit Inception: ➁
5V @ 95% VOUT (3.3V @ 0A)
3.3V @ 98.5% VOUT (5V @ 0A)
7.6-9.0 Amps
11.3-12.7 Amps
Environmental
Bellcore, ground fixed, full power,
+25°C operating ambient temperature
1.3 million hours
1.67 million hours
D12 Models
D24/D48 Models
Operating Temperature (Ambient) ➁
Without Derating:
D12 Models
D24 Models
D48 Models
With Derating
–40 to +50°C
–40 to +60°C
–40 to +68°C
To +100°C (See Derating Curves)
Case Temperature
Maximum Operational
For Thermal Shutdown ➁
+100°C
+110°C minimum, +117°C maximum
Storage Temperature
–40 to +120°C
Flammability
UL 94V-0
Physical
Dimensions
2" x 2" x 0.45" (50.8 x 50.8 x 11.43mm)
Internal Case Connection
D12/D24 Models
D48 Models
–Input (Pin 2)
+Input (Pin 1)
Case Material
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Pin Material
Gold-plated copper alloy
Weight
2.7 ounces (76.5 grams)
➀ Balanced “full-load” is 5V @ 3.3A/3.3V @ 5A. All models are specified with external 1µF
ceramic output capacitors.
➁ See Technical Notes/Graphs for details.
➂ Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
may cause permanent damage.
➃ Output noise may be further reduced with the installation of additional external output capacitors.
See Technical Notes.
➄ On/Off control is designed to be driven with open collector or by appropriate voltage levels.
Voltages must be referenced to the input return pin (–Input).
➅ Demonstrated MTBF available on request.
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MDC_BWR 33W Models.A05 Page 3 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Absolute Maximum Ratings
Input Voltage
Continuous:
"D12" Models
"D24" Models
"D48" Models
Transient (100msec): "D12" Models
"D24" Models
"D48" Models
Input Reverse-Polarity Protection ➁
"D12" Models
"D24" Models
"D48" Models
Output Current ➁
23 Volts
42 Volts
81 Volts
25 Volts
50 Volts
100 Volts
Input Current must be limited. 1 minute
duration. Fusing recommended.
6 Amps
4 Amps
2 Amps
Current limited. Devices can withstand
an indefinite output short circuit.
On/Off Control (Pin 4) Max. Voltages
Referenced to –Input (pin 2)
+VIN
Storage Temperature
–40 to +120°C
Lead Temperature (Soldering, 10 sec.)
+300°C
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.
TECHNICAL NOTES
5V & 3.3V Regulation
The BWR 33 Watt Series converters are designed such that both the 5V and
3.3V outputs share a common regulation feedback control loop. Though the
feedback loop is influenced by both outputs, the 3.3 Volt output is dominant. As
a result, the 3.3 Volt regulation (1%) is superior to the 5 Volt regulation (1.5%).
The converters are specified for load regulation of 10% to 100% loading
and for no-load to 100% loading. Operation below 10% of full load mandates
an increase in the regulation tolerance of ±0.5% for 3.3 Volt output and an
increase of ±1% for the 5 Volt output. A slight increase in switching noise may
also be observed for operation below 10% loading.
Operation with a full load on 3.3 Volt output and light to no load on 5 Volt
output is the most demanding for +5V regulation. Under such conditions
the internal "bleeder" circuit is activated to provide an internal load thereby
keeping regulation within the published specifications. The bleeder is activated
gradually so as not to cause any erratic behavior on the converters outputs. A
slight degradation in efficiency will occur while this internal load is activated.
Filtering and Noise Reduction
The BWR 33 Watt Series Converters achieve their rated ripple and noise
specifications with the use of 1μF output capacitors. In critical applications,
input/output noise may be further reduced by installing additional external I/O
capacitors. Input capacitors should be selected for bulk capacitance, low ESR
and high rms-ripple-current ratings. Output capacitors should be selected for
low ESR and appropriate frequency response. All caps should have appropriate
voltage ratings and be located as close to the converter as possible.
Start-Up Time
The VIN to VOUT start-up time is the interval of time where the input voltage
crosses the turn-on threshold point, and the fully loaded output voltage enters
and remains within its specified accuracy band. Actual measured times will
vary with input source impedance, external input/output capacitance, and
the slew rate of the input voltages. The BWR-5/6-3.3/7 Series implements a
soft start circuit that limits the duty cycle of the PWM controller at power up,
thereby limiting the Input Inrush current.
The On/Off Control to VOUT start-up time assumes the converter has its
nominal input voltage applied but is turned off via the On/Off Control pin. The
specification defines the interval between the time at which the converter is
turned on and the fully loaded output voltage enters and remains within its
specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control
to VOUT start-up time is also governed by the internal soft start circuitry and
external load capacitance.
Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold
Under normal start-up conditions, devices will not begin to regulate until the
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for
"D48" models). Once operating, devices will not turn off until the input voltage
drops below the Undervoltage Shutdown limit (34V for "D48" models). Subsequent re-start will not occur until the input is brought back up to the Start-Up
Threshold. This built in hysteresis prevents any unstable on/off situations from
occurring at a single input voltage.
Input voltages exceeding the input overvoltage shutdown specification
listed in the Performance/Functional Specifications will cause the device to
shutdown. A built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow
the converter to restart until the input voltage is sufficiently reduced.
On/Off Control
The On/Off Control (pin 4) may be used for remote on/off operation. As shown
in Figure 1, the control pin is referenced to the –Input (pin 2) and will be internally pulled to a high state. The standard BWR model (no suffix) is designed
so that it is enabled when the control pin is left open and disabled when the
control pin is pulled low (less than +0.8V relative to –Input).
Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain circuit (optically isolated if appropriate).
The drive circuit should be able to sink approximately 1 mA for logic low.
The on/off control function is designed such that the converter can be
disabled while the input power is ramping up, and then "released" once the
input has stabilized.
1
+INPUT
RA
D12 RA = 34.8kΩ, RB = 6.83kΩ
4
D24 RA = 100kΩ, RB = 9.74kΩ
ON/OFF
CONTROL
D48 RA = 100kΩ, RB = 4.53kΩ
RB
2
–INPUT
Figure 1. Internal Circuitry for On/Off Control
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MDC_BWR 33W Models.A05 Page 4 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Current Limiting
When power demands from either output fall within 126% to 181% of the rated
output current, the DC/DC converter will go into a current limiting mode. In this
condition both output voltages will decrease proportionately with increases in
output current, thereby maintaining a somewhat constant power dissipation.
This is commonly referred to as power limiting (see Figures 2a and 2b). Current
limit inception is defined as the point where the full-power output voltage
falls below the specified tolerance. If the load current being drawn from the
converter is significant enough, the unit will go into a short circuit condition.
See "Short Circuit Condition."
Short Circuit Condition
When a converter is in current limit mode the output voltages will drop as the
output current demand increases (see figures 2a and 2b). If the output voltage
drops too low, the magnetically coupled voltage used to develop primary side
voltages will also drop, thereby shutting down the PWM controller.
Following a time-out period of 5 to 15 milliseconds, the PWM will restart,
causing the output voltages to begin ramping to their appropriate values. If the
short-circuit condition persists, another shutdown cycle will be initiated. This
on/off cycling is referred to as “hiccup” mode. The hiccup cycling reduces the
average output current, thereby preventing internal temperatures from rising
to excessive levels. The BWR is capable of enduring an indefinite short circuit
output condition.
Typical Current Limiting Characteristics for 3.3V Output
Thermal Shutdown
These BWR converters are equipped with Thermal Shutdown Circuitry. If the
internal temperature of the DC/DC converter rises above the designed operating temperature, a precision temperature sensor will power down the unit.
When the internal temperature decreases below the threshold of the temperature sensor the unit will self start.
Ouput Voltages (Volts)
4
3
2
Output Overvoltage Protection
Both output voltages are monitored for an overvoltage condition via magnetic
coupling to the primary side. If either output voltage should rise to a level which
could be damaging to the load circuitry, the sensing circuitry will power down
the PWM controller causing the output voltages to decrease. Following a timeout of 5 to 15 milliseconds the PWM will restart, causing the output voltages to
ramp to their appropriate values. If the fault condition persists, and the output
voltages again climb to excessive levels, the overvoltage circuitry will initiate
another shutdown cycle. This on/off cycling is referred to as "hiccup" mode.
VIN NOM, VIN LO All Models
VIN HI D12, D24 Models
1
VIN HI
D48 Models
0
0
2
4
6
8
10
12
14
3.3 VOUT Average Ouput Current (Amps)
Figure 2a. Current Limiting Characteristics for 3.3V Output
Isolation/Case Connection
The BWR 33 Watt Series’ 5V and 3.3V outputs (pins 5 & 7) and return (pin 6)
are isolated from the +VIN and –VIN inputs (pins 1 & 2) via a transformer and
an opto-coupled transistor. Case connections are made internal to the DC/DC
converter. "D12 & D24" cases are connected to –Input (pin 2), "D48" to +Input
(pin 1).
Typical Current Limiting Characteristics for 5V Output
(3.3V Output @ 700mA)
5
4.5
4
3.5
Ouput Voltages (Volts)
3
2.5
2
VIN NOM, VIN LO
All Models
VIN HI D12, D24
Models
1.5
1
VIN HI
D48 Models
0.5
0
0
1
2
3
4
5
6
7
8
9
5 VOUT Average Ouput Current (Amps)
Figure 2b. Current Limiting Characteristics for 5V Output
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MDC_BWR 33W Models.A05 Page 5 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Input Reverse-Polarity Protection
Upon applying a reverse-polarity voltage to the DC/DC converter, an internal
diode will be forward biased, drawing excessive current from the power
source. Therefore, it is required that the input current be limited be either an
appropriately rated input fuse or a current limited power source.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. Fuses should also be
used if the possibility of a sustained, non-current-limited, input-voltage polarity
reversal exists. For DATEL BWR 33 Watt Series Converters, slow blow fuses are
recommended with values no greater than the following.
Fuse Value
VIN Range
"D12" Models
6 Amps
"D24" Models
4 Amps
"D48" Models
2 Amps
It is recommended that fuses be installed in the +Input line.
1
5
+5V OUTPUT
+INPUT
+5V LOAD
OUTPUT
RETURN
2
–INPUT
4
ON/OFF
CONTROL
+3.3V OUTPUT
TRIM
6
20kΩ
5-22
Turns
7
+3.3V LOAD
8
Figure 3. Trim Connections using a Trimpot
+5V OUTPUT
1
5
+INPUT
+5V LOAD
OUTPUT
RETURN
2
–INPUT
6
+3.3V LOAD
Trimming Output Voltages
These BWR converters have a trim capability (pin 8) that allow users to adjust
the output voltages ±5%. A trim adjustment will cause an equal percentage of
change in both outputs. Adjustments to the output voltages can be accomplished via a trim pot Figure 3 or a single fixed resistor as shown in Figures 4
and 5. A single fixed resistor can increase or decrease the output voltage
depending on its connection. Fixed resistors should be metal-film types with
absolute TCR’s less than 100ppm/°C to minimize sensitivity to changes in
temperature.
4
ON/OFF
CONTROL
Trim adjustment greater than 5% can have an adverse affect on the
converter’s performance and is not recommended.
TRIM
8
R TRIM
DOWN
Figure 4. Decrease Output Voltage Trim Connections Using A Fixed Resistor
Trim Down
A single resistor connected from the Trim Pin (pin 8) the +3.3V Output (pin 7),
see Figure 4, will decrease the output voltages. A resistor connected from the
Trim Pin (pin 8) to Output Return (pin 6) will increase the output voltages.
Table 1 shows the typical Trim Resistor values for output voltage changes of
1 through 5%.
+3.3V OUTPUT
7
RTDOWN (k7) =
(
3.55(VO – 1.273)
3.3 – VO
+5V OUTPUT
1
–INPUT
–13
5
+INPUT
2
)
+5V LOAD
OUTPUT
RETURN
6
+3.3V LOAD
Trim Down
Trim Up
4
0%
1%
201.5k
123.7k
2%
92.5k
55.3k
3%
56.1k
32.6k
4%
38.0k
21.2k
5%
27.1k
14.3k
ON/OFF
CONTROL
+3.3V OUTPUT
TRIM
7
8
R TRIM
UP
Figure 5. Increase Output Voltage Trim Connections Using A Fixed Resistor
Trim Up
Table 1. Percentage of Output Voltage Change vs Trim Resistor Value (Ohms)
RTUP (k7) =
(
4.51
VO – 3.3
)
– 13
Note: Accuracy of adjustment is subject to the tolerances of
resistor values, reference accuracy and factory-adjusted output
accuracy. VO = desired output voltage.
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MDC_BWR 33W Models.A05 Page 6 of 12
Dual Output BWR Models
Typical Performance Curves
D12 Model
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
D12, D24, D48 Models
Input Ripple Current (VIN = 18V, 5V @ 3A, 3.3V@ 4.5A,
Output Ripple and Noise (PARD)
(VIN = nominal, [email protected], 3.3V @ 4.5A, external 1µF output capacitors.)
no external filtering, source impedance <0.1Ω.)
5V Output
Ripple/Noise
50mV/div
20MHz BW
50mA/div
3.3V Output
Ripple/Noise
50mV/div
20MHz BW
1µsec/div
1µsec/div
D24 Model
Input Ripple Current (VIN = 36V, 5V @ 3A, 3.3V@ 4.5A,
Output Ripple and Noise (PARD)
(VIN = nominal, [email protected], 3.3V @ 7A, external 1µF output capacitors.)
no external filtering, source impedance <0.1Ω.)
5V Output
Ripple/Noise
50mV/div
20MHz BW
50mA/div
3.3V Output
Ripple/Noise
50mV/div
20MHz BW
1µsec/div
1µsec/div
D48 Model
Output Ripple and Noise (PARD)
(VIN = nominal, 5V@ 6A, 3.3V @ 0A, external 1µF output capacitors.)
Input Ripple Current (VIN = 75V, 5V @ 3A, 3.3V@ 4.5A,
no external filtering, source impedance <0.1Ω.)
5V Output
Ripple/Noise
50mV/div
20MHz BW
50mA/div
3.3V Output
Ripple/Noise
50mV/div
20MHz BW
1µsec/div
1µsec/div
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MDC_BWR 33W Models.A05 Page 7 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Typical Performance Curves
D12, D24, D48 Models
D12, D24, D48 Models
5V Output Half-Load to Full-Load Transient Response
3.3V Output Half-Load to Full-Load Transient Response
(VIN = nominal, 3.3V@ 700mA, external 1µF output capacitors.)
(VIN = nominal, 5V@ 600mA, external 1µF output capacitors.)
5V Output
100mV/div
3.3V Output
100mV/div
7A
6A
Output
Current
2A/div
Output
Current
2A/div
3A
3.5A
100µsec/div
100µsec/div
5V Output Full-Load to Half-Load Transient Response
3.3V Output Full-Load to Half-Load Transient Response
(VIN = nominal, 3.3V@ 700mA, external 1µF output capacitors.)
(VIN = nominal, 5V@ 600mA, external 1µF output capacitors.)
5V Output
100mV/div
3.3V Output
100mV/div
7A
6A
Output
Current
2A/div
Output
Current
2A/div
3A
3.5A
100µsec/div
100µsec/div
Cross Regulation Effects on +3.3VOUT
Cross Regulation Effects On +5VOUT
(Reference Point 5V @ 3.9A, 3.3V @ 4A)
(Reference Point 5V @ 4A, 3.3V @ 3.9A)
4.0
0.6
Percentage of Change in +5 VOUT (%)
Percentage of Change on 3.3 VOUT (%)
0.8
3.3V @ 0A
0.4
3.3V @ 2A
0.2
0
3.3V @ 4A
–0.2
3.3V @ 6A
–0.4
3.0
5V @ 0A
2.0
5V @ 2A
1.0
0
5V @ 4A
–1.0
–2.0
5V @ 6A
–3.0
3.3V @ 7A
–4.0
–0.6
0
1
2
3
4
5 Volt Output Current (Amps)
5
6
0
1
2
3
4
5
6
7
3.3 Volt Current (Amps)
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MDC_BWR 33W Models.A05 Page 8 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Typical Performance Curves
D12, D24, D48 Models
D12, D24, D48 Models
5V
Output
2V/div
5V
Output
2V/div
3.3V
Output
2V/div
3.3V
Output
2V/div
VIN
Remote
On/Off
(Pin 4)
2msec/div
2msec/div
D12 Models
D24, D48 Models
D24/D48 - 3.3 Volt Output Efficiency vs. Line and Load
(+5V @ 600mA)
D12 - 3.3 Volt Output Efficiency vs. Line and Load
(+5V @ 600mA)
95
90
VIN = 10V
VIN = MIN
90
85
80
Efficiency (%)
Efficiency (%)
85
VIN = 12V
75
VIN = 18V
70
80
VIN = NOMINAL
75
70
VIN = MAX
65
60
65
55
60
0.70
50
1.40
2.10
2.80
3.50
4.20
4.90
5.60
6.30
0
7.00
0.78
1.56
2.33
3.11
3.89
4.67
5.44
6.22
7.00
5.33
6.00
+3.3V Output Current (Amps)
+3.3V Output Current (Amps)
D24/D48 - 5 Volt Output Efficiency vs. Line and Load
(+3.3V @ 700mA)
D12 - 5 Volt Output Efficiency vs. Line and Load
(+3.3V @ 700mA)
95
90
VIN = 10V
VIN = MIN
90
85
80
Efficiency (%)
Efficiency (%)
85
VIN = 12V
75
70
VIN = 18V
80
VIN = NOMINAL
75
70
VIN = MAX
65
60
65
55
60
0.60
50
1.20
1.80
2.40
3.00
3.60
4.20
+5V Output Current (Amps)
4.80
5.40
6.00
0
0.67
1.33
2.00
2.67
3.33
4.00
4.67
+5V Output Current (Amps)
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MDC_BWR 33W Models.A05 Page 9 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Temperature Derating and Electrical Performace Curves
D12 Models
D24 Models
Output Power vs. Ambient Temperature
VIN = 24V, Natural Convection Air flow
35
35
30
30
25
25
Output Power (Watts)
Output Power (Watts)
Output Power vs. Ambient Temperature
VIN = 12V, Natural Convection Air flow
20
15
Loading (5V @ 1.98A, 3.3V @ 7A)
10
Loading (5V @ 3.74A, 3.3V @ 4.33A)
20
15
Loading (5V @ 1.98A, 3.3V @ 7A)
10
Loading (5V @ 3.74A, 3.3V @ 4.33A)
Loading (5V @ 5.1A, 3.3V @ 2.3A)
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
0
–40
95 100
0
15
25
25
20
15
Loading (5V @ 1.98A, 3.3V @ 7A)
Loading (5V @ 3.74A, 3.3V @ 4.33A)
25
60
65
70
75
30
35
40
45
50
55
80
85
90
95 100
80
85
90
95 100
80
85
90
95 100
Loading (5V @ 5.1A, 3.3V @ 2.3A)
60
65
70
75
80
85
90
0
–40
95 100
Loading (5V @ 6A, 3.3V @ 0.7A)
0
15
20
25
30
35
40
45
50
55
60
65
70
75
Ambient Temperature (˚C)
Output Power vs. Ambient Temperature
VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
35
35
30
30
25
25
Output Power (Watts)
Output Power (Watts)
55
Loading (5V @ 3.74A, 3.3V @ 4.33A)
Output Power vs. Ambient Temperature
VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
20
15
Natural Convection Air FlowLoading
150lfm Air Flow
20
15
Natural Convection Air FlowLoading
10
150lfm Air Flow
300lfm Air Flow
300lfm Air Flow
5
5
0
–40
50
Loading (5V @ 1.98A, 3.3V @ 7A)
10
Ambient Temperature (˚C)
10
45
15
5
Loading (5V @ 6A, 3.3V @ 0.7A)
20
40
20
Loading (5V @ 5.1A, 3.3V @ 2.33A)
15
35
Output Power vs. Ambient Temperature
VIN = 36V, Natural Convection Air flow
30
0
30
Output Power vs. Ambient Temperature
VIN = 18V, Natural Convection Air flow
30
0
–40
25
Ambient Temperature (˚C)
35
5
20
Ambient Temperature (˚C)
35
10
Loading (5V @ 6A, 3.3V @ 0.7A)
5
Output Power (Watts)
Output Power (Watts)
0
–40
Loading (5V @ 5.1A, 3.3V @ 2.3A)
Loading (5V @ 6A, 3.3V @ 0.7A)
5
0
15
20
25
30
35
40
45
50
55
60
65
70
Ambient Temperature (˚C)
75
80
85
90
95 100
0
–40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
Ambient Temperature (˚C)
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MDC_BWR 33W Models.A05 Page 10 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Temperature Derating and Electrical Performace Curves
D48 Models
Output Power vs. Ambient Temperature
VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
35
35
30
30
25
25
Output Power (Watts)
Output Power (Watts)
Output Power vs. Ambient Temperature
VIN = 48V, Natural Convection Air flow
20
15
Loading (5V @ 1.98A, 3.3V @ 7A)
10
Loading (5V @ 3.74A, 3.3V @ 4.33A)
20
15
Natural Convection Air FlowLoading
10
150lfm Air Flow
Loading (5V @ 5.1A, 3.3V @ 2.33A)
Loading (5V @ 6A, 3.3V @ 0.7A)
5
0
–40
0
15
20
25
30
35
40
45
50
55
300lfm Air Flow
5
60
65
70
75
80
85
90
95 100
0
–40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (˚C)
Ambient Temperature (˚C)
Output Power vs. Ambient Temperature
VIN = 75V, Natural Convection Air flow
35
Output Power (Watts)
30
25
20
15
Loading (5V @ 1.98A, 3.3V @ 7A)
10
Loading (5V @ 3.74A, 3.3V @ 4.33A)
Loading (5V @ 5.1A, 3.3V @ 2.33A)
Loading (5V @ 6A, 3.3V @ 0.7A)
5
0
–40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (˚C)
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MDC_BWR 33W Models.A05 Page 11 of 12
Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Options and Adaptations
Optional Functions
The dual output BWR 33W DC/DC converters offer two mechanical options. Per
the Ordering Guide on page 2, the trailing DXX in each part number pertains to
the base part number. Part-number suffixes are added after the “DXX,” indicating the selection of standard options. The resulting part number is a “standard
product” and is available to any customer desiring that particular combination
of options, as described below.
MECHANICAL SPECIFICATIONS
Model BWR-5/6-3.3/7-D48-30745
2.00
(50.08)
PLASTIC CASE
0.48
(12.19)
Case C22A
Blank On/Off Control function with positive polarity in pin 4 position. The
pin length is 0.2 inches (5.08 mm).
L1
L2
Trim the pin length to 0.110 ±0.010 inches (2.79 ±0.25mm). This
option requires a minimum order quantity.
Trim the pin length to 0.145 ±0.010 inches (3.68 ±0.25mm). This
option requires a minimum order quantity.
Adaptations
There are various additional configurations available on BWR 33W DC/DC’s.
Because designating each of them with a standard part-number suffix is
not always feasable, such are designated by DATEL in assigning a 5-digit
“adaptation code” after the part-number suffixes. Once a configuration has
been requested by a customer and created by DATEL, the resulting product is
available to any customer as a “standard” off-the-shelf product. Contact DATEL
directly if you are interested in your own set of options/adaptations. Our policy
for minimum order quantities may apply.
Consequently, the following product is offered for sale:
BWR-5/6-3.3/7-D48-30745
Standard product, 48VIN, 5V/6A and 3.3V/7A outputs with modified case/pin
out C22A/P60A (LW016FA compatible), negative On/Off logic, modified Trim
function for 3.3VOUT (no trim for 5 VOUT) and trimmed pin length to 0.110 inches
(2.8 mm).
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
STANDOFF
0.020 (0.51)
0.040 ±0.001 DIA.
(1.016 ±0.025)
Suffix Description
0.110 ±0.010
(2.8 ±0.25)
1.800
(45.72)
0.10
(2.54)
5
0.200
(5.08)
6
1
2
7
0.400
(10.16)
4
1.200
(30.48)
3 EQ. SP. @
0.400 (10.16)
2.00
(50.08)
8
0.40
(10.16)
0.100
(2.54)
BOTTOM VIEW
Dimensions in inches (mm)
I/O Connections
Pin Function P60A
1
+Input
2
–Input
3
No Pin
4
On/Off Control
5
+3.3V Output
6
Output Return
7
+5V Output
8
+3.3V Trim
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. 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. Specifications are subject to change without
notice.
© 2013 Murata Power Solutions, Inc.
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MDC_BWR 33W Models.A05 Page 12 of 12