ETC BWR-5/6-3.3/7-D24S

®
®
INNOVATION and EXCELLENCE
Dual Output
Mixed Voltage, BWR Models
5V and 3.3V, 2" x 2"
33 Watt, DC/DC Converters
Features
!
Regulated 3.3V and 5V outputs
!
5V @ 6Amps/3.3V @ 7 Amps capability
!
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 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
!
Output overvoltage protection
!
Thermal shutdown
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 nonconductive finish, these converters utilize a shared control-loop 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 undervoltage shutdown circuitry, output overvoltage
protection, output short-circuit and current limiting protection, and thermal shutdown.
Each design also provides trim capability, on/off control function, or an optional sync
control. 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).
+5V OUTPUT
+INPUT
SWITCH
CONTROL
+3.3V OUTPUT
–INPUT
OUTPUT
RETURN
ON/OFF
CONTROL
(SYNC)
PWM
CONTROLLER
ACTIVE
BLEEDER
OPTO
ISOLATION
UV & OV
COMPARATORS
REFERENCE &
ERROR AMP
THERMAL
SHUTDOWN
TRIM
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: [email protected] · Internet: www.datel.com
3 3 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
XWR Series
Performance Specifications and Ordering Guide
Model
BWR-5/6-3.3/7-D12
BWR-5/6-3.3/7-D24
BWR-5/6-3.3/7-D48
➀
Input
Output
R/N (mVp-p) ➂
Regulation (Max.) ➆
VOUT
(Volts)
IOUT ➁
(Amps)
Typ.
Max.
Line
5
6
40
100
±1%
±1.5%
±2.5%
3.3
7
95
140
±0.5%
±1%
±1.5%
Load ➃ No Load ➅
5
6
40
100
±1%
±1.5%
±2.5%
3.3
7
95
140
±0.5%
±1%
±1.5%
5
6
40
100
±1%
±1.5%
±2.5%
3.3
7
95
140
±0.5%
±1%
±1.5%
➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" conditions (5V @ 3.3A/3.3V @ 5A).
➁ Any combination of 5V/3.3V rated IOUT current, not to exceed 33 Watts of output power. (See derating graphs.)
➂ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 1µF ceramic
output capacitors.
➃
➄
➅
➆
VIN Nom.
(Volts)
Range
(Volts)
IIN ➄
(mA)
Min.
Typ.
Package
(Case,
Pinout)
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
Efficiency
Tested from 10% load to 100% load (other output at 10% load).
Nominal line voltage, no load/balanced full-power condition.
Tested from no-load to 100% load (other output at no-load).
Output trim may impact 5V load regulation.
PA R T N U M B E R S T R U C T U R E
BWR - 5 / 6 - 3.3 / 7 - D48 S
Dual Output/
Mixed-Voltage Series
Part Number Suffixes
Add "S" suffix as desired
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
V1 Nominal Output Voltage:
5 Volts
I1 Maximum Output Current:
6 Amps
BWR 33 Watt DC/DC's are designed so an On/Off Control function
with positive polarity (no suffix) or a Sync function ("S" suffix) can be
added in the pin 4 position.
No Suffix On/Off Control function (positive polarity) on pin 4
S Suffix
Sync function on pin 4
I2 Maximum Output Current:
7 Amps
V2 Nominal Output Voltage:
3.3 Volts
MEC
A N I C A L S P E C I FI C A T I O N S
Case C4
I/O Connections
Pin
1
2
3
4
5
6
7
8
2
Function P33
+Input
–Input
No Pin
On/Off Control
+5V Output
Output Return
+3.3V Output
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).
BWR Models
3 3 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
Performance/Functional Specifications
Output (continued)
Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀
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)
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
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
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
8.5-9.6 Volts (9.3V nominal)
16-17 Volts (16.5V nominal)
32.5-35 Volts (34V nominal)
Dynamic Load Response: ➁
300µsec maximum
5V (50-100% load step to 4% VOUT)
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)
Dynamic Characteristics
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, UV, Thermal Shutdown
10mA typical
Switching Frequency
Input Reflected Ripple Current:
Source Impedance
D12 Models
D24/D48 Models
<0.1Ω, no external input filtering
200mAp-p (150mAp-p typical)
250mAp-p (225mAp-p typical)
MTBF ➆
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 ➃ ➅
D12, D24 & D48 Models
Environmental
D12 Models
D24/D48 Models
On = open or 13V - +VIN, IIN = 50µA max.
Off = 0-0.8V, IIN = 1mA max.
Sync (Option, Pin 4): ➁ ➂ ➃
Input Threshold (Rising Edge Active)
Input Voltage Low
Input Voltage High
Input Resistance
Output High Voltage (100µA load)
Output Drive Current
Input/Output Pulse Width
1-2.7 Volts
0-0.9 Volts
2.8-5 Volts
35kΩ minimum
3.5-4.8 Volts
35mA
160-360nsec
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
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
±3% maximum
±1.5% maximum
–40 to +120°C
Physical
Output
VOUT Accuracy
5V Output
3.3V Output
Bellcore, ground fixed, full power, +25°C
operating ambient temperature
1.3 million hours
1.67 million hours
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Minimum Loading Per Specification
No load, see Performance Specifications
Pin Material
Brass, solder coated
Ripple/Noise (20MHz BW) ➁ ➄
See Ordering Guide
Weight:
2.7 ounces (76.5 grams)
Line/Load Regulation ➁
See Ordering Guide
Efficiency
See Ordering Guide / Efficiency Curves
Primary to Secondary Insulation Level
D12/D24 Models
Operational
D48 Models
Basic
Cross Regulation: ➁
5V Output ([email protected], [email protected]) ±6% maximum
3.3V Output ([email protected], [email protected]) ±0.5% maximum
Trim Range ➁
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 Devices may be ordered with On/Off Control function or a Sync function.
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 return pin (–Input).
➆ Demonstrated MTBF available on request.
±5%
Isolation Voltage:
Input-to-Output
1500Vdc minimum
Isolation Capacitance
470pF
Isolation Resistance
100MΩ
Temperature Coefficient
±0.02%/per°C
3
3 3 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
XWR Series
Start-Up Time
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
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.
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
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.
Current limited. Devices can withstand
an indefinite output short circuit.
On/Off Control (Pin 4) Max. Voltages
Referenced to –Input (pin 2)
No Suffix
"S" Suffix
+VIN
+5.7 Volts
Storage Temperature
–40 to +120°C
Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold
Lead Temperature (Soldering, 10 sec.)
+300°C
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.
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
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.
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%).
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).
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.
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.
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.
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.
Filtering and Noise Reduction
1
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.
+INPUT
RA
4
D12 RA = 34.8kΩ, RB = 6.83kΩ
D24 RA = 100kΩ, RB = 9.74kΩ
ON/OFF
CONTROL
D48 RA = 100kΩ, RB = 4.53kΩ
RB
2
–INPUT
Figure 1. Internal Circuitry for No Suffix Models
4
BWR Models
3 3 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
Sync Function (Optional)
Typical Current Limiting Characteristics for 5V Output
(3.3V Output @ 700mA)
In critical applications employing multiple switching DC/DC converters, it
may be necessary to synchronize the switching of selected converters.
These BWR converters offer an optional Sync function ("S" suffix) in place
of the On/Off Control on pin 4. The Sync pin will self configure as either
a slave or master, depending on the application. If the Sync pin detects
the appropriate input signal it will configure itself as a slave, if no signal is
detected it will generate master Sync pulses.
5
4.5
4
3.5
3
Ouput Voltages (Volts)
Synchronization of converters requires that the master switching frequency
exceed the slave frequency by a minimum of 60kHz. At the start of each
DC/DC converter switching cycle, an internally generated 160-360ns pulse
will be present at the Sync pin. If, however, the unit receives an external
Sync pulse, the DC/DC converter’s switching cycle will be reset, and a new
cycle initiated. Since the master frequency is higher than the slave’s switching
frequency, the slave cycles are always terminated prematurely, thereby never
allowing internal Synch pulses to be generated. The external signal’s rising
edge initiates the slave Sync process. External signals must adhere to min./
max. limits stated in Performance/Functional Specifications.
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)
Operating these BWR converters at higher switching frequencies via the
external Sync function will result in a slight degradation of efficiency.
Contact the DATEL for further information.
Figure 2b. Current Limiting Characteristics for 5V Output
Current Limiting
Short Circuit Condition
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."
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
Ouput Voltages (Volts)
4
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.
3
2
Output Overvoltage Protection
VIN NOM, VIN LO All Models
VIN HI D12, D24 Models
1
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 time-out 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 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
5
3 3 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
XWR Series
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).
1
+INPUT
+5V OUTPUT
5
+5V LOAD
OUTPUT
RETURN
2
–INPUT
4
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.
ON/OFF
CONTROL
+3.3V OUTPUT
TRIM
6
20kΩ
5-22
Turns
7
+3.3V LOAD
8
Figure 3. Trim Connections using a Trimpot
Input Fusing
+5V OUTPUT
1
5
+INPUT
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.
VIN Range
"D12" Models
"D24" Models
"D48" Models
+5V LOAD
OUTPUT
RETURN
2
–INPUT
6
+3.3V LOAD
4
Fuse Value
6 Amps
4 Amps
2 Amps
ON/OFF
CONTROL
+3.3V OUTPUT
TRIM
7
8
R TRIM
DOWN
Figure 4. Decrease Output Voltage Trim Connections
Using A Fixed Resistor
Trim Down
It is recommended that fuses be installed in the +Input line.
RTDOWN (kΩ) =
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.
e
3.55(VO – 1.273)
3.3 – VO
+5V OUTPUT
1
–INPUT
–13
5
+INPUT
2
j
+5V LOAD
OUTPUT
RETURN
6
+3.3V LOAD
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.
4
ON/OFF
CONTROL
+3.3V OUTPUT
TRIM
8
R TRIM
UP
Figure 5. Increase Output Voltage Trim Connections
Using A Fixed Resistor
Table 1 shows the typical Trim Resistor values for output voltage changes
of 1 through 5%.
Trim adjustment greater than 5% can have an adverse affect on the converter’s performance and is not recommended.
Trim Up
RTUP (kΩ) =
Trim Down
7
e
4.51
VO – 3.3
j
–13
Trim Up
0%
–
–
1%
201.5k
123.7k
2%
92.5k
55.3k
3%
56.1k
32.6k
4%
38k
21.2k
5%
27.1k
14.3k
Note: Accuracy of adjustment is subject to the tolerances of resistor
values, reference accuracy and factory-adjusted output accuracy.
VO = desired output voltage.
Table 1. Percentage of Output Voltage Change vs Trim Resistor Value (Ohms)
6
BWR Models
3 3 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
Typical Performance Curves
D12 Model
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
7
3 3 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
XWR Series
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
6
0
5 Volt Output Current (Amps)
1
2
3
4
3.3 Volt Current (Amps)
8
5
6
7
BWR Models
3 3 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
Typical Performance Curves
D12, D24, D48 Models
D12, D24, D48 Models
Start-Up from VIN
Start-Up from Remote On/Off Control
(VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1µF output capacitors.)
(VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1µF output capacitors.)
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
4.80
5.40
0
6.00
0.67
1.33
2.00
2.67
3.33
4.00
+5V Output Current (Amps)
+5V Output Current (Amps)
9
4.67
3 3 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
XWR Series
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 @ 2.33A)
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
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
5
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
0
–40
95 100
Ambient Temperature (˚C)
0
15
20
25
30
35
40
45
50
55
60
65
70
Ambient Temperature (˚C)
10
75
BWR Models
3 3 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
Temperature Derating and Electrical Performace Curves
D48 Models
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)
0
–40
300lfm Air Flow
Loading (5V @ 6A, 3.3V @ 0.7A)
5
0
15
20
25
30
35
40
45
50
55
5
60
65
70
75
80
85
90
0
–40
95 100
0
15
Ambient Temperature (˚C)
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
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)
®
®
INNOVATION and EXCELLENCE
ISO 9001 REGISTERED
DS-0481A
12/01
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 München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com
Email: [email protected]
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. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
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