®
®
INNOVATION and EXCELLENCE
Dual Output
BPB Models
High-Efficiency, Smaller-Package
25-40 Watt, DC/DC Converters
Features
■
■
■
■
■
25/30/35/40W output power
Standard pinout! Smaller size!
New 2" x 3" package fits 3" x 3" footprint
±5V, ±12V or ±15V outputs
Four input voltage ranges:
10-36V, 18-36V
18-72V, 36-72V
High efficiencies (to 88%)
Fully isolated, 750Vdc guaranteed
Fully I/O protected
Thermal shutdown
V
OUT
trim and on/off control
Safety approvals pending
Modifications and customs for OEM’s
■
■
■
■
■
■
■
DATEL’s BPB Model, 25-40 Watt, dual-output DC/DC converters bring you efficient
"on-board" power processing in a cost-effective smaller package with a standard
pinout. The 2" x 3" BPB "footprint" conforms to the industry-standard pinout and pin
geometries of most 3" x 3" devices (a 33% space savings) while delivering as much as
60% more power (40W vs. 25W).
Applicable to a wide range of telecom, computer and other OEM applications, BPB
Model DC/DC’s offer ±5V, ±12V or ±15V outputs. They operate from four different input
voltage ranges with total available output power being a function of the selected input
range. "Q12" models operate from 10-36V and deliver 25W.
"Q48" models operate from 18-72V and deliver 30W. For "D24" and "D48" models, the
input voltage ranges and rated output powers are 18-36V at 35W and 36-72V
at 40W, respectively.
For improved reliability and affordability, BPB Models exploit modern, high-speed,
automatic assembly to construct their field-proven, SMT-on-pcb designs. Devices
employ corrosion-resistant steel cases with heavy zinc top plates (traditionally referred
to as baseplates). Heat-generating transformer cores and power semiconductors are
mounted directly to the cases, which have threaded inserts for optional add-on heat
sinks and/or pcb mounting.
All devices feature input pi filters, input overvoltage shutdown, output overvoltage
protection, output current limiting, and thermal shutdown. UL, CSA, EN and IEC
compliance testing is currently in progress as are EMI/EMC characterizations.
+V
IN
+V
OUT
PWM
–
V
IN
COMMON
–
V
IN
–
V
OUT
CASE
ON/OFF
CONTROL
(SYNC)
REFERENCE &
ERROR
AMPLIFIER
PWM
CONTROLLER
OPTO
FEEDBACK
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
XPB Series
Performance Specifications and Ordering Guide
Output
Model
BPB-5/4-Q12
BPB-5/4-D24
BPB-5/4-Q48
BPB-5/4-D48
BPB-12/1.65-Q12
BPB-12/1.65-D24
BPB-12/1.65-Q48
BPB-12/1.65-D48
BPB-15/1.3-Q12
BPB-15/1.3-D24
BPB-15/1.3-Q48
BPB-15/1.3-D48
2 5 - 4 0 W,
DUAL
OUTPUT
DC/DC
CONVERTERS
➀
Input
Regulation (Max.)
Load
➂
Line
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
V
OUT
(Volts)
±5
±5
±5
±5
±12
±12
±12
±12
±15
±15
±15
±15
I
OUT
(Amps)
±4
±4
±4
±4
±1.65
±1.65
±1.65
±1.65
±1.3
±1.3
±1.3
±1.3
R/N (mVp-p)
➁
Typ.
Max.
100
100
100
100
100
100
100
100
100
100
100
100
150
150
150
150
150
150
150
150
150
150
150
150
V
IN
Nom.
(Volts)
24
24
48
48
24
24
48
48
24
24
48
48
Range
(Volts)
10-36
18-36
18-72
36-72
10-36
18-36
18-72
36-72
10-36
18-36
18-72
36-72
I
IN
➃
(mA)
15/1225
15/1696
25/735
20/980
15/1224
15/1667
15/727
15/948
20/1225
15/1648
15/735
20/923
Efficiency
Min.
Typ.
82%
84%
82%
83%
82%
85%
84%
85%
83%
85%
83%
85%
85%
86%
85%
85%
85%
87%
86%
87%
85%
88%
85%
88%
Package
(Case,
Pinout)
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
C10, P15
➀
Typical at T
A
= +25°C under nominal line voltage and balanced "full-load" conditions unless otherwise noted.
For BPB devices, "full load" is a function of each device's input voltage range. See Output Power Considerations and Technical Notes for more details.
➁
Ripple/Noise (R/N) measured over a 20MHz bandwidth.
➂
Balanced loads, 10% to 100% load.
➃
Nominal line voltage, no-load/full-load conditions.
PART NUMBER STRUCTURE
O U T P U T P OW E R C O N S I D E R AT I O N S
B PB
-
5
/
4
-
D48
Output Configuration:
B
= Bipolar
Power Package with
Metal Baseplate
Nominal Output Voltages:
±5, ±12 or ±15 Volts
Input Voltage Range:
Q12
= 10-36 Volts (24V nominal)
D24
= 18-36 Volts (24V nominal)
Q48
= 18-72 Volts (48V nominal)
D48
= 36-72 Volts (48V nominal)
Maximum Output Current
in Amps from each output
As shown below, BPB Model DC/DC Converters are classified by output
power. For dual-output devices, the total output power from the two outputs
can not exceed the rated power. For example, "Q48" models have a
maximum output power of 30W. Therefore, if the +Output is sourcing 20
Watts, the –Output is limited to sourcing 10 Watts ensuring the total output
power does not exceed 30 Watts.
Model
Q12
Q48
D24
D48
Maximum Output Power
25 Watts
30 Watts
35 Watts
40 Watts
M E C H A N I C A L S P E C I F I C AT I O N S
I/O Connections
3.00
(76.20)
METAL
BASEPLATE
0.025
(0.64)
Optional Heat Sink
(Part Number HS-23)
3.00
(76.20)
0.20
(5.08)
2.600
(66.04)
0.40
(10.16)
0.50
(12.70)
0.20 MIN.
(5.08)
METAL CASE
Case C10
0.040 ±0.002 DIA.
(1.016 ±0.051)
2.500
(63.50)
0.25
(6.35)
0.40
(10.16)
1
6
Pin Function P15
No Pin
1
–Input
2
+Input
3
Case
4
5
On/Off Control*
–Output
6
No Pin
7
Common
8
+Output
9
Trim
10
* See note 4 on next page.
1.200
(30.48)
2.00
(50.80)
2
1.200
(30.48)
7
1.600
2.00
(40.64)
4 EQ. SP. @ (50.80)
0.400 (10.16)
3
4
(4) THREADED INSERTS
#4-40 THD THRU
WITH 0.025 (0.64)
STANDOFFS
8
TOP VIEW
0.120 DIA. (3.048)
(4 PLACES)
9
10
BOTTOM VIEW
0.10
(2.54)
0.50
(12.70)
5
0.20
(5.08)
2.600
(66.04)
0.20
(5.08)
MATERIAL: BLACK ANODIZED ALUMINUM
4 MOUNTING SCREWS AND 0.009 (0.229) THERMAL PAD INCLUDED
2
2 5 - 4 0 W,
DUAL
OUTPUT
DC/DC
CONVERTERS
BPB Models
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage and "full-load" conditions, unless noted.
➀
➁
Input
Input Voltage Range:
Q12 Models
D24 Models
Q48 Models
D48 Models
Input Current
Input Filter Type
➂
Overvoltage Shutdown:
Q12 and D24 Models
Q48" and D48 Models
Reverse-Polarity Protection
On/Off Control
(Pin 5)
➃
V
OUT
Accuracy
(50% load)
Temperature Coefficient
Ripple/Noise
(20MHz BW)
➂
Line/Load Regulation
Efficiency
Isolation Voltage
Isolation Capacitance
Current Limiting
Overvoltage Protection
Transient Response
(50% load step)
Switching Frequency
Operating Temperature
(ambient):
Without Derating
With Derating
Maximum Baseplate Temperature
Storage Temperature
Dimensions
Shielding
Case Connection
Case Material
Baseplate Material
Pin Material
Weight
10-36 Volts (24V nominal)
18-36 Volts (24V nominal)
18-72 Volts (48V nominal)
36-72 Volts (48V nominal)
See Ordering Guide
Pi
40 Volts
80 Volts
Yes (Instantaneous, 6A maximum)
TTL high (or open) = on, low = off
Storage Temperature
Input Voltage:
Q12/D24 Models
Q48/D48 Models
Absolute Maximum Ratings
44 Volts
88 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Current limited. Max. current and
short-circuit duration are model
dependent.
–40 to +105°C
+300°C
Input Reverse-Polarity Protection
Output Overvoltage Protection
±5V Outputs
±12V Outputs
±15V Outputs
Output Current
Output
±1%, maximum
±0.02% per °C
See Ordering Guide
See Ordering Guide
See Ordering Guide
750Vdc, minimum
620pF
Continuous, auto-recovery
Zener/transorb clamps, magnetic feedback
Lead Temperature
(soldering, 10 sec.)
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.
TECHNICAL NOTES
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "floating." Any
BPB model may be configured to produce an output of 10V, 24V or 30V (for
±
5V,
±
12V or
±
15V models, respectively) by applying the load across the
+Output and –Output (pins 9 and 6), with either output grounded. The
Common (pin 8) should be left open. Minimum 20% loading is recom-
mended under these conditions. The total output voltage span may be
externally trimmed as described below.
Filtering and Noise Reduction
All BPB 25-40 Watt DC/DC Converters achieve their rated ripple and noise
specifications without the use of external input/output capacitors. In critical
applications, input/output ripple and noise may be further reduced by
installing electrolytic capacitors across the input terminals and/or low-ESR
tantalum or electrolytic capacitors across the output terminals. Output
capacitors should be connected between their respective output pin (pin 6 or
9) and Common (pin 8). See Figure 7. The caps should be located as close
to the power converters as possible. Typical values are listed in the tables
below. In many applications, using values greater than those listed will yield
better results.
To Reduce Input Ripple
Q12, D24 Models
Q48, D48 Models
To Reduce Output Ripple
±5V Outputs
±12/15V Outputs
47µF, 50V
10µF, 100V
47µF, 10V, Low ESR
22µF, 20V, Low ESR
Dynamic Characteristics
300µsec max. to ±1.5% of final value
125kHz (±10%)
Environmental
–25 to +50°C (Model dependent)
to +90°C (See Derating Curves)
+90°C
–40 to +105°C
Physical
2" x 3" x 0.5" (50.8 x 76.2 x 12.7mm)
6-sided
Pin 4
Bright tin-plated steel
Aluminum
Brass, solder coated
4 ounces (113 grams)
➀
These converters require a minimum 10% loading on each output to maintain
specified regulation. Operation under no-load conditions will not damage these devices;
however they may not meet all listed specifications.
➁
"Full load" varies by part number and is determined by the input voltage range as indicated by
the part number suffix. See Technical Notes and Output Power Considerations.
➂
Application-specific input/output filtering can be recommended or perhaps added internally
upon request. Contact DATEL Applications Engineering for details.
➃
Applying a voltage to the On/Off Control pin when no input power is applied to the converter
can cause permanent damage to the converter. If desired, the On/Off Control function can be
replaced with a Sync function. See page 6 of this data sheet for more details.
In critical, space-sensitive applications, DATEL may be able to tailor the
internal input/output filtering of these devices to meet your specific require-
ments. Contact our Applications Engineering Group for additional details.
Input Fusing
V
IN
Range
Fuse Value
Q12
4A
D24
4A
Q48
3A
D48
2A
3
XPB Series
2 5 - 4 0 W,
DUAL
OUTPUT
DC/DC
CONVERTERS
Temperature Derating and Electrical Performance Curves
Q12 Models (25 Watts)
25
25
20
20
Output Power (Watts)
Output Power (Watts)
15
15
10
Natural Convection Cooling
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
10
Natural Convection Cooling
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 2a. Temperature Derating Without Heat Sink
Figure 2b. Temperature Derating With Heat Sink
Q48 Models (30 Watts)
30
30
25
25
Output Power (Watts)
20
Output Power (Watts)
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
5
300 Linear Feet Per Minute
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 3a. Temperature Derating Without Heat Sink
Figure 3b. Temperature Derating With Heat Sink
D24 Models (35 Watts)
35
35
30
30
Output Power (Watts)
20
Output Power (Watts)
25
25
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 4a. Temperature Derating Without Heat Sink
Figure 4b. Temperature Derating With Heat Sink
4
2 5 - 4 0 W,
DUAL
OUTPUT
DC/DC
CONVERTERS
BPB Models
Temperature Derating and Electrical Performance Curves
D48 Models (40 Watts)
40
35
30
40
35
30
Output Power (Watts)
25
20
15
10
5
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Output Power (Watts)
25
20
15
10
5
0
–25
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Natural Convection Cooling
150 Linear Feet Per Minute
300 Linear Feet Per Minute
Natural Convection Cooling
150 Linear Feet Per Minute
300 Linear Feet Per Minute
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 5a. Temperature Derating Without Heat Sink
Figure 5b. Temperature Derating With Heat Sink
Output Power
BPB Model, dual-output DC/DC converters incorporate a design tradeoff
between total available output power and input voltage range. The total
available power is a function of both the nominal input voltage and the
"width" of the input voltage range. For a given nominal input (24V or 48V),
narrower ranges (2:1 vs. 4:1) have more available power. For a given "width"
of input range (2:1 or 4:1), higher nominal inputs (48V vs. 24V) have more
available power. Each device, as indicated by its part-number suffix (Q12, Q48,
D24 or D48) has a total output power limitation of 25, 30, 35 or 40 Watts,
respectively. Observing these power limitations is the user's responsibility.
As indicated by its Part Number Structure, each ±5V, ±12V or ±15V BPB
device is capable of sourcing up to ±4, ±1.65 or ±1.3 Amps, respectively.
Users have the flexibility of loading either output up to these limits; however
you must be extremely careful not to exceed the total output power rating of
any given device. If, for example, a ±5V device with a 30W power rating
(BPB-5/4-Q48) is sourcing 4A from its +5V output (representing 20W of
+Output power), that device can only supply an additional 10W (2 Amps)
from its –Output.
As a consequence of this "power-allocation" flexibility, the definition of "full
load," as the condition under which performance specifications are tested and
listed, is ambiguous. The following table lists the positive and negative output
currents that DATEL uses to define each device’s "full load."
Model Number
BPB-5/4-Q12
BPB-5/4-Q48
BPB-5/4-D24
BPB-5/4-D48
BPB-12/1.65-Q12
BPB-12/1.65-Q48
BPB-12/1.65-D24
BPB-12/1.65-D48
BPB-15/1.3-Q12
BPB-15/1.3-Q48
BPB-15/1.3-D24
BPB-15/1.3-D48
Voltage
Range
10-36V
18-72V
18-36V
36-72V
10-36V
18-72V
18-36V
36-72V
10-36V
18-72V
18-36V
36-72V
Output
Power
25 Watts
30 Watts
35 Watts
40 Watts
25 Watts
30 Watts
35 Watts
40 Watts
25 Watts
30 Watts
35 Watts
40 Watts
Definition of "Full Load" for Specification Purposes
±5V Currents
±2.5A (25W)
±3A (30W)
±3.5A (35W)
±4A (40W)
–
–
–
–
–
–
–
–
±12V Currents
–
–
–
–
±1.04A (24.96W)
±1.25A (30W)
±1.46A (35W)
±1.67A (40.1W)
–
–
–
–
±15V Currents
–
–
–
–
–
–
–
–
±833mA (24.99W)
±1A (30W)
±1.17A (35.1W)
±1.33A (39.9W)
Table 1. Output Currents Comprising "Full Load"
5
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