®
®
INNOVATION and EXCELLENCE
Dual Output
BMP Models
5V and 3.3V, 2" x 3"
35 Watt, DC/DC Converters
Features
Independent 5V @ 4.7A and
3.3V @ 3.5A Outputs
Each output fully regulated
35 Watts total output power
Standard 2" x 3" package
UL1950 and EN60950 safety approvals
(BASIC insulation, -D48 model)
Fully isolated, 1500Vdc guaranteed
18-36V or 36-75V input ranges
mark available (75V-input models)
V
OUT
trim and on/off control
Fully I/O protected
Thermal shutdown
For your moderate-power mixed-logic designs, DATEL’s BMP-5/5-3.3/4-D24
(18-36V input) and BMP-5/5-3.3/4-D48 (36-75V input) are fully isolated DC/DC
converters providing both 5V and 3.3V outputs. Housed in DATEL’s standard 2" x 3"
x 0.5" metal packages, these BMP duals can simultaneously source up to 4.7 Amps
from their 5V outputs and up to 3.5 Amps from their 3.3V outputs. Both outputs are
fully isolated (1500Vdc) and independently line (±1.0%) and load (±1.0%) regulated.
Both models feature input pi filters, input overvoltage shutdown, input reverse-
polarity protection, output overvoltage protection, output current limiting, and thermal
shutdown. Both outputs are controlled via the On/Off Control function (pin 5). The
5 Volt output can be adjusted ±5%.
BMP Model DC/DC’s deliver high efficiency (82%) and are fully specified for
–40 to +100°C operation. Their corrosion-resistant metal cases have non-conductive
baseplates and threaded inserts for easy heat-sink attachment and/or pcb mounting.
These devices satisfy IEC950, UL1950 and EN60950 safety requirements for BASIC
insulation. CE marking is available for "D48" models.
+INPUT
+5V OUTPUT
COMMON
–INPUT
REFERENCE &
ERROR
AMPLIFIER
+3.3V OUTPUT
ON/OFF
CONTROL
(SYNC)
PWM
CONTROLLER
ISOLATION
PWM
CONTROLLER
REFERENCE &
ERROR
AMPLIFIER
CASE
TRIM
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com
XMP Series
➀
3 5 W, D UA L O U T P U T D C / D C C O N V E RT E R S
Performance Specifications and Ordering Guide
V
OUT
(Volts)
5
3.3
5
3.3
Model
BMP-5/5-3.3/4-D24
BMP-5/5-3.3/4-D48
I
OUT
➁
(Amps)
4.7
3.5
4.7
3.5
Output
R/N (mVp-p)
➂
Typ.
100
100
100
100
Input
Regulation (Max.)
Line
±1%
±1%
±1%
±1%
Max.
120
120
120
120
Load
➃
±1%
±1%
±1%
±1%
V
IN
Nom.
(Volts)
24
48
Range
(Volts)
18-36
36-75
I
IN
➄
(mA)
35/1870
35/923
Efficiency
Min.
79%
80%
Typ.
81%
82%
Package
(Case,
Pinout)
C11, P44
C11, P44
➀
Typical at T
A
= +25°C under nominal line voltage and "full-load" conditions.
➁
Any combination of 5V/3.3V rated I
OUT
current, not to exceed 35 Watts of output power. (See derating graphs.)
➂
Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with no output capacitors.
➃
Tested from 10% load to 100% load (other output at fixed load).
➄
Nominal line voltage, no load/balanced full-power condition.
PA R T N U M B E R S T R U C T U R E
BMP
-
5
/
5
-
3.3
/
4
-
D48 S
Dual Output/
Mixed-Voltage Series
V
1
Nominal Output Voltage:
5 Volts
I
1
Maximum Output Current:
4.7 Amps
V
2
Nominal Output Voltage:
3.3 Volts
Add "S" suffix as desired
Input Voltage Range:
D24
= 18-36 Volts (24V nominal)
D48
= 36-75 Volts (48V nominal)
I
2
Maximum Output Current:
3.5 Amps
Part Number Suffixes
BMP 35 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 5 position.
No Suffix
On/Off Control function (positive polarity) on pin 5
S Suffix
Sync function on pin 5
MEC
A N I C A L S P E C I FI C A T I O N S
3.04
(77.22)
METAL
CASE
INSULATED
BASE
0.040 ±0.002 DIA.
(1.016 ±0.051)
2.500
(63.50)
0.27
(6.86)
1.200
(30.48)
2.00
(50.80)
Optional Heat Sink
(Part Number HS-23)
3.00
(76.20)
0.20
(5.08)
2.600
(66.04)
0.40
(10.16)
0.55
(13.97)
0.20 MIN
(5.08)
Case C11
0.42
(10.67)
1
6
2
1.200
(30.48)
7
1.600
2.04
(40.64)
4 EQ. SP. @ (51.82)
0.400 (10.16)
0.10
(2.54)
0.50
(12.70)
3
(4) THREADED INSERTS
#4-40 THD THRU
8
TOP VIEW
4
0.120 DIA. (3.048)
(4 PLACES)
9
10
BOTTOM VIEW
5
0.22
(5.59)
2.600
(66.04)
DIMENSIONS ARE IN INCHES (MM)
0.22
(5.59)
MATERIAL: BLACK ANODIZED ALUMINUM
4 MOUNTING SCREWS AND 0.009 (0.229) THERMAL PAD INCLUDED
I/O Connections
Pin
1
2
3
4
5
Function P44
No Pin
–Input
+Input
Case
On/Off Control
Pin
6
7
8
9
10
Function P44
No Pin
+3.3V Output
Output Return
+5V Output
Trim
2
3 5 W, D UA L O U T P U T D C / D C C O N V E RT E R S
BMP Models
Environmental
MTBF
➆
D24 Models
D48 Models
Operating Temperature
(Ambient):
➁
Without Derating:
With Derating
Case Temperature:
Maximum Operational
For Thermal Shutdown
Storage Temperature
Dimensions
Bellcore, ground fixed, full power, +25°C
operating ambient temperature
TBC million hours
TBC million hours
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage, balanced "full-load" conditions, unless noted.
➀
Input
Input Voltage Range:
D24 Models
D48 Models
Overvoltage Shutdown:
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, Thermal Shutdown
Input Reflected Ripple Current:
Source Impedance
D24 & D48 Models
Internal Input Filter Type
Reverse-Polarity Protection:
D24 Models
D48 Models
On/Off Control
(Pin 5):
➂ ➃ ➅
D24 & D48 Models
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
36.4-43.6 Volts (40V nominal)
77-85 Volts (83V nominal)
See Ordering Guide
10mA typical
<0.1Ω, no external input filtering
100mAp-p (typical)
Pi (4.5µF - 10µH - 7.5µF)
1 minute duration, 3A maximum
1 minute duration, 2A maximum
On = open or 2.6V - +V
IN
, I
IN
= 1.5mA max.
Off = 0-1.2V, I
IN
= 1.5mA max.
No heat sink
–40 to +50°C
To +100°C (See Derating Curves)
+100°C
+95°C minimum, +105°C maximum
–40 to +120°C
Physical
2.04 x 3.04 x 0.55" (51.8 x 77.2 x 14mm)
5-sided
Pin 4
Aluminum, black anodized finish
with plastic header
Brass, solder coated
6 ounces (170 grams)
Shielding
Case Connection
Case Material
Pin Material
Weight:
Output
V
OUT
Accuracy
5V Output
3.3V Output
Minimum Loading Per Specification
Ripple/Noise
(20MHz BW)
➄
Line/Load Regulation
Efficiency
Trim Range
+5V Output
Isolation Voltage:
Input-to-Output
Case-to-Input
Case-to-Output
Isolation Capacitance
Isolation Resistance
Temperature Coefficient
Current Limit Inception:
5V @ 98.5% V
OUT
(3.3V @ 3.5A)
3.3V @ 98.5% V
OUT
(5V @ 4.7A)
Short Circuit Current:
5V Output
3.3V Output
Overvoltage Protection:
5V Output
Dynamic Load Response:
5V (50-100% load step to 3% V
OUT
)
3.3V (50-100% load step to 3% V
OUT
)
Switching Frequency
±1% maximum
±1.5% maximum
10%
See Ordering Guide
See Ordering Guide
See Ordering Guide
±5%
1500Vdc minimum
1000Vdc minimum
1000Vdc mimimum
470pF
100MΩ
±0.02%/per°C
Primary to Secondary Insulation Level
D24 Models
Operational
D48 Models
Basic
➀
All models are specified with no external 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 5) 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.
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.
Absolute Maximum Ratings
Input Voltage:
D24 Models
D48 Models
Input Reverse-Polarity Protection
Output Overvoltage Protection
+5V Outputs
Output Current
42 Volts
88 Volts
Current must be <3A. Brief duration
only. Fusing recommended.
6.8 Volts
Current limited. Maximum current and
short-circuit duration are model
dependent.
–40 to +105°C
+300°C
Output (continued)
6-8 Amps
5-8 Amps
10 Amps average, continuous
8 Amps average, continuous
Magnetic feedback/transorb
6.8 volts
Storage Temperature
Lead Temperature
(Soldering, 10 sec.)
Dynamic Characteristics
300µsec maximum
300µsec maximum
150kHz (±15kHz)
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.
3
XMP Series
3 5 W, D UA L O U T P U T D C / D C C O N V E RT E R S
On/Off Control (Standard)
3
+10V
+INPUT
10k9
The On/Off Control pin (pin 5) may be used for remote on/off operation. As
shown in Figure 6, the control pin has an internal 10kΩ pull-up resistor to
approximately 10V. The converter is designed so that it is enabled when the
control pin is left open (normal mode) and disabled when the control pin is
pulled low (to less than +1.2V relative to –Input, pin 2).
Dynamic control of the on/off function is best accomplished with a mechani-
cal relay or an open-collector/open-drain drive circuit (optically isolated if
appropriate). The drive circuit should obviously be able to sink approximately
1.5mA when activated and withstand more than 10 Volts when deactivated.
Applying an external voltage to pin 5 when no input power is applied to the
converter can cause permanent damage to the converter. The on/off control
function, however, is designed such that the converter can be disabled (pin
5 pulled low) while input power is ramping up and then "released" once the
input has stabilized. Under these circumstances, it takes approximately 30ms
for the output of the fully loaded DC/DC to ramp up and settle to within ±1%
of its final value after the converter has been turned on.
Synchronization (Optional)
In critical applications employing multiple switching DC/DC converters, it may
be desirable to intentionally synchronize the switching of selected converters
(so the system noise can be reduced with notch filtering) or to purposely
desynchronize the converters (to lessen the current-carrying requirements on
intermediate dc buses). BMP DC/DC Converters have been designed so that
the On/Off Control function on pin 5 can be replaced with a Sync function.
This change has to be implemented by DATEL during the product assembly
process. Contact our Applications Engineering Group for additional details.
To synchronize the switching of multiple BMP converters configured with the
Sync function, an external clock can be applied to pin 5 of each converter.
The clock should be a TTL square wave referenced to –Input (logic high =
+2 to +5 Volts, 250µA max.; logic low = 0 to +0.8 Volts, 70µA max.) with a
maximum 1µsec "high" duration. The frequency of the synchronizing clock
should be higher than that of any individual converter.
Output Trimming
The total output voltage span of the 5 Volt output, from +5V Output (pin 9)
to Output Return (pin 8) may be trimmed ±5% via a single trimpot or fixed
resistor. The trimpot should be connected as shown in Figure 3 with its wiper
connected to pin 10 (Trim). A trimpot can also be used to determine the value
of a single fixed resistor which can be connected between pin 10 (Trim) and
pin 9 (+5V Output) to trim "down" the output voltages, or between pins 10
(Trim) and 8 (Output Return) to trim "up" the output voltages. Fixed resistors
should have absolute TCR's less than 100ppm/°C to ensure stability.
Case Connection
Unlike most other DC/DC converters, BMP DC/DC's do not have their metal
case connected to one of their input pins. The "uncommitted" case is con-
nected to pin 4 which, depending on your system configuration, should be
connected to either +Input (pin 3) or –Input (pin 2).
5
ON/OFF
CONTROL
2
–INPUT
Figure 2. Driving the On/Off Control Pin
+3.3V OUTPUT
3
+INPUT
7
+3.3V LOAD
OUTPUT
RETURN
TRIM
8
20kΩ
5-22
Turns
2
+5V LOAD
–INPUT
+5V OUTPUT
10
9
Figure 3. +5V
OUT
Trim Connections Using A Trim Pot
+3.3V OUTPUT
3
+INPUT
7
+3.3V LOAD
OUTPUT
RETURN
TRIM
8
R
TRIM DOWN
2
+5V LOAD
10
–INPUT
+5V OUTPUT
9
R
T
DOWN
(kΩ) =
2.49(V
O
– 2.53)
5 – V
O
–16.2
Figure 4. +5V
OUT
Trim Down Connections Using A Fixed Resistor
+3.3V OUTPUT
3
+INPUT
7
+3.3V LOAD
OUTPUT
RETURN
TRIM
8
10
R
TRIM UP
2
+5V LOAD
–INPUT
+5V OUTPUT
9
R
T
UP
(kΩ) =
6.30
V
O
– 5
–16.2
Figure 5. +5V
OUT
Trim Up Connections Using A Fixed Resistor
Note: Resistor values are in kΩ. Accuracy of adjustment is subject to
tolerances of resistors and factory-adjusted output accuracy.
V
O
= desired output voltage.
4
3 5 W, D UA L O U T P U T D C / D C C O N V E RT E R S
BMP Models
Typical Performance Curves
D24 and D48 Models
81.2
Output Power vs. Ambient Temperature
V
IN
= Nominal Without Additional Heat Sink
40
BMP-5/5-3.3/4-D24 Efficiency vs. Line Voltage @ Full Load
81
80.8
35
80.6
Efficiency (%)
Natural Convection Cooling
10
5
0
–40
150lfm Air Flow
300lfm Air Flow
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
30
Output Power (Watts)
80.4
80.2
80
79.8
79.6
79.4
79.2
18
22.5
27
Line Voltage (Volts)
31.5
36
25
20
15
Ambient Temperature (
˚
C)
Output Power vs. Ambient Temperature
V
IN
= Nominal With Additional Heat Sink
40
BMP-5/5-3.3/4-D48 Efficiency vs. Line Voltage @ Full Load
82.4
35
82.2
30
Output Power (Watts)
82
25
Efficiency (%)
50
55
60
65
70
75
80
85
90
95 100
20
15
Natural Convection Cooling
10
5
0
–40
150lfm Air Flow
300lfm Air Flow
81.8
81.6
81.4
81.2
81
0
15
20
25
30
35
40
45
Ambient Temperature (
˚
C)
80.8
80.6
36
45.75
55.5
Line Voltage (Volts)
65.25
75
®
®
INNOVATION and EXCELLENCE
ISO 9001 REGISTERED
DS-0494A
4/01
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: sales@datel.com
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 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.
5
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