DATEL BCP-5-15-3.3-15-D48S, BCP-5-15-3.3-15-D48N, BCP-5-15-3.3-15-D24S, BCP-5-15-3.3-15-D24N Datasheet
5V and 3.3V, "Half-Brick"
75 Watt, DC/DC Converters
Dual Output
Mixed Voltage, BCP Models
Features
As your new, mixed-logic (5V and 3.3V) design evolves and your current requirements change, your new DC/DC converter will not. DATEL’s BCP-5/15-3.3/15-D24
(18-36V input) and BCP-5/15-3.3/15-D48 (36-75V input) are fully isolated DC/DC
converters providing both 5V and 3.3V outputs. Housed in standard "half-brick"
packages (2.3" x 2.4" x 0.525"), the BCP’s can support any combination of 5V and
3.3V loading up to a combined total of 15 Amps. Both outputs are fully isolated
(1500Vdc) and independently line (±0.2%) and load (±0.5% and ±0.6%) regulated.
Both BCP models feature input pi fi lters, input undervoltage and overvoltage
shutdown, input reverse-polarity protection, output overvoltage protection, current
limiting, and thermal shutdown. Each has an on/off control function, or an optional
sync capability and the two output voltages can be trimmed independently.
BCP Model DC/DC’s deliver low noise (50mVp-p), high effi ciency (87%) and are
fully specifi ed for –40 to +100°C operation. Utilization of metal baseplate technology
with threaded inserts permits easy heat-sink attachment and/or pcb mounting. These
devices meet IEC950, UL1950, EN60950 and VDE safety standards, including
BASIC insulation requirements. CB reports are available on request. "D48" models
are CE marked (meet the requirements of LVD).
Figure 1. Simplifi ed Schematic
INNOVATION and EX C ELL E N C
E
®
®
■
■
■
■
■
■
■
■
■
■
■
■
■
Independent 5V and 3.3V outputs
Each output fully regulated
No minimum load requirements
Up to 15 Amps per output
75 Watts total output power
Standard "half-brick" package
UL1950, EN60950 and VDE safety
approvals (BASIC insulation)
Fully isolated, 1500Vdc guaranteed
18-36V or 36-75V input ranges
mark available (75V-input models)
Input under and overvoltage shutdown
Continuous short-circuit protection
Thermal shutdown
+INPUT
–INPUT
SWITCH
CONTROL
+5V OUTPUT
+3.3V OUTPUT
5V RETURN
3.3V RETURN
3.3V TRIM
5V TRIM
MAG AMP
CONTROLLER
PWM
CONTROLLER
REFERENCE &
ERROR AMP
OPTO
ISOLATION
ON/OFF
CONTROL
(SYNC)
UV & OV
COMPARATORS
REFERENCE &
ERROR AMP
DATEL, Inc., Mansfi eld, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com
75W, DUAL OUTPUT, MIXED-VOLTAGE DC/DC CONVERTERS
XCP Series
Performance Specifi cations and Ordering Guide
➀
V1 Nominal Output Voltage: 5 Volts
5BCP 15-
/
D24-
Input Voltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
I1 Maximum Output Current: 15A
Dual Output/
Standard Half-Brick Package
PART NUMBER STRUCTURE
3.3 15
/
-
N
V2 Nominal Output Voltage: 3.3 Volts
I
2 Maximum Output Current: 15A
Add "N" or "S" suffi x as desired
Part Number Suffi xes
BCP 75 Watt DC/DC's are designed so an On/Off Control function,
with either positive polarity (no suffi x) or negative polarity ("N"suffi x),
or a Sync function ("S" suffi x) can be added in the pin 3 position.
No Suffi x On/Off Control function (positive polarity) on pin 3
N On/Off Control function (negative polarity) on pin 3
S Sync function on pin 3
BCP-5/15-3.3/15-D24
5 15 50 100 ±0.2% ±0.5%
24 18-36 215/3720 84% 87.2% C19, P29
3.3 15 50 100 ±0.2% ±0.6%
BCP-5/15-3.3/15-D48
5 15 50 100 ±0.2% ±0.5%
48 36-75 125/1860 84% 88% C19, P29
3.3 15 50 100 ±0.2% ±0.6%
➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" (5V @7.5A, 3.3V @ 7.5A)
conditions unless otherwise noted.
➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specifi ed with 22µF, low-ESR,
input capacitor and 10µF tantalum in parallel with 1µF ceramic output capacitors.
Output
Input
➂ No load to 100% load, other output at no-load.
➃ Nominal line voltage, no-load/5V at full-load condition.
➄ Current from either output at maximum value, or both outputs to a combined total of 15 A.
➅ 5V at full-load condition.
R/N (mVp-p) Regulation (Max.) Effi ciency
➅ Packag e
V
OUT IOUT ➄ VIN Nom. Range IIN ➃ (Case,
Model (Volts) (Amps) Typ. Max. Line Load ➂ (Volts) (Volts) (mA) Min. Typ. Pinout)
Pin Function P29 Pin Function P29
1 –Input 6 5V Return
2 Case (Baseplate) 7 +5V Output
3 On/Off Control 8 3.3V Trim
4 +Input 9 3.3V Return
5 5V Trim 10 +3.3V Output
MECHANICAL SPECIFICATIONS
Optional Heat Sink (Part Number HS-CPLP2)
0.30
(7.62)
0.400
(10.16)
1.000
(25.40)
1.400
(35.56)
2.40
(60.96)
1.000
(25.40)
1.900
(48.26)
2.30
(58.42)
1
2
3
4
9
10
8
7
6
5
2.000
(50.80)
(4) THREADED INSERTS
#M3 THD THRU
0.20
(5.08)
0.20
(5.08)
0.200
(5.08)
BOTTOM VIEW
0.300
(7.62)
0.600
(15.24)
1.300
(33.02)
1.600
(40.64)
METAL BASEPLATE
PLASTIC SHELL
0.20 MIN
(5.08)
0.545 (13.84) MAX.
0.525 (13.34) TYP.
0.040 ±0.002 DIA.
(1.016 ±0.051)
Case C19
I/O Connections
2.000
(50.80)
2.30
(58.42)
1.900
(48.26)
2.40
(60.96)
0.20
(5.08)
0.147 DIA. (3.734)
(4 PLACES)
0.20
(5.08)
0.50 (12.70) TYP.
051 (12.95) MAX.
0.10
(2.54)
TOP VIEW
MATERIAL: BLACK ANODIZED ALUMINUM
4 MOUNTING SCREWS AND 0.009 (0.229)
THICK THERMAL PAD INCLUDED
3.50
(88.90)
0.75
(19.05)
0.20
(5.08)
0.140 THRU AND COUNTERSINK
90˚ TO 0.26 (4 PLACES)
2.000
(50.80)
1.900
(48.26)
2.30
(58.42)
0.47
(11.94)
MATERIAL: BLACK ANODIZED ALUMINUM
2.48
(62.99)
0.16
(4.06)
Optional Heat Sink (Part Number HS-CP)
2
BCP Models
75W, DUAL OUTPUT, MIXED-VOLTAGE DC/DC CONVERTERS
Performance/Functional Specifi cations
Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀
Input
Input Voltage Range:
D24 Models 18-36 Volts (24V nominal)
D48 Models 36-75 Volts (48V nominal)
Overvoltage Shutdown:
➁
D24 Models 37.5-40.5 Volts (39V typical)
D48 Models 78.8-87.0 Volts (83V typical)
Start-Up Threshold:
➁
D24 Models 15.5-18 Volts (16.5V typical)
D48 Models 33.5-36 Volts (34.4V typical)
Undervoltage Shutdown:
➁
D24 Models 14-16 Volts (15.3V typical)
D48 Models 30.5-33.5 Volts (31.8V typical)
Input Current:
Normal Operating Conditions See Ordering Guide
Minimum Input Voltage:
D24 Models 5.02 Amps maximum
D48 Models 2.51 Amps maximum
Standby Mode:
Off, OV, UV, Thermal Shutdown 17mA typical
Input Refl ected Ripple Current:
Source Impedance <0.1Ω
22µF Low-ESR Capacitor 53mArms, 150mAp-p maximum
Input Filter Type Pi (0.47pF - 4.7µH - 3µF)
Reverse-Polarity Protection:
➁
D24 Models 1 minute duration, 6A maximum
D48 Models 1 minute duration, 4A maximum
On/Off Control: (Pin 3)
➁ ➂ ➄
D24 & D48 Models On = open or 2.0 - +V
IN, IIN = 50µA max.
Off = 0-0.6V, I
IN = 1mA max.
D24N & D48N" Models On = 0-0.6V, I
IN = 1mA max.
Off = open or 2.0 - +V
IN, IIN = 50µA max.
Sync (Option, Pin 3): ➁ ➂ ➄
Input Threshold (Rising Edge Active) 0.9-1.8 Volts
Input Voltage Low 0-0.8 Volts
Input Voltage High 2.9-5.0 Volts
Input Resistance 35kΩ minimum
Output High Voltage (100µA load) 2.1-2.8 Volts
Input/Output Pulse Width 200-450nsec
Output
VOUT Accuracy
5V Output ±2% maximum
3.3V Output ±2% maximum
Minimum Loading Per Specifi cation No load
Ripple/Noise (20MHz BW)
➁ ➃ See Ordering Guide
Line/Load Regulation See Ordering Guide
Effi ciency See Ordering Guide and Effi ciency Curves
Trim Range
➁ ±10% independent
Isolation Voltage:
Input-to-Output 1500Vdc minimum
Input-to-Case 1000Vdc minimum
Output-to-Case 1000Vdc minimum
Isolation Capacitance 470pF
Isolation resistance 100MΩ
Current Limit Inception:
➁
5V @ 98% VOUT (3.3V no-load) 16-20 Amps
3.3V @ 98% V
OUT (5V no-load) 16-20 Amps
Short Circuit Current: ➁ Constant current 25A, indefi nite
Temperature Coeffi cient ±0.02% per °C
Output (continued)
Overvoltage Protection: ➁ Magnetic feedback, latching
5V Output 6.8 volts
3.3V Output 4.5Volts
Dynamic Characteristics
Dynamic Load Response:
5V (50-100% load step to 1% V
OUT) 450µsec maximum
3.3V (50-100% load step to 1% V
OUT) 450µsec maximum
Start-Up Time:
➁
V
IN to VOUT 30msec maximum
On/Off to V
OUT 20msec maximum
Switching Frequency 350kHz (±35kHz)
Environmental
MTBF Bellcore, ground fi xed, controlled
D24 Models 1.49M hours (case @ 50°C)
D48 Models 1.72M hours (case @ 50°C)
Operating Temperature (Ambient):
θ Case to Ambient, No Heatsink 6.8°C/Watt
Without Derating –40 to +45°C (with heat sink)
With Derating To +100°C (See Derating Curves)
Case Temperature:
Maximum Allowable +100°C
For Thermal Shutdown
➁ +100°C minimum, +110°C maximum
Storage Temperature –40 to +120°C
Physical
Dimensions 2.3" x 2.4" x 0.525" (58.4 x 61 x 13.3mm)
Case (Baseplate) Connection
➁ Pin 2
Case/Pin Material Diallyl phthalate, UL94V-0 rated, aluminum
baseplate; solder-tinned brass pins
Weight 4.2 ounces (118 grams)
Primary to Secondary Insulation Level Basic
Absolute Maximum Ratings
➀ Models are specifi ed at "full load" (5V & 3.3V @ 7.5A), with an external 22µF, low-ESR,
input capacitor and 10µF tantalum in parallel with 1µF ceramic output capacitors.
➁ See Technical Notes for details.
➂ Devices may be ordered with opposite polarity (pin 3 open = off), or the On/Off Control
function can be replaced with a sync function. See Part Number Suffi xes and Technical
Notes for additional information.
➃ Output noise may be further reduced with the installation of additional external output
capacitors. See Technical Notes.
➄ These signals must be referenced to the input return pin (–V
IN).
➅ Demonstrated MTBF available on request.
Input Voltage:
Continuous: D24 Models 40.5 Volts
D48 Models 87 Volts
Transient (100msec): D24 Models 50 Volts
D48 Models 100 Volts
Input Reverse-Polarity Protection
➁ Input Current must be limited. 1 minute
duration. Fusing recommended.
D24 Models 6 Amps
D48 Models 4 Amps
Output Overvoltage Protection
➁
3.3V Outputs 3.8 Volts, latching
5V Outputs 6.2 Volts, latching
Output Current
➁ Current limited. Devices can withstand
an indefi nite output short circuit.
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 Specifi cations Table is not implied, nor recommended.
3
75W, DUAL OUTPUT, MIXED-VOLTAGE DC/DC CONVERTERS
XCP Series
5V & 3.3V Outputs/Returns
The BCP Series outputs (pins 7 & 10) and returns (pins 6 & 9) are isolated
from the +V
IN and –VIN inputs (pins 4 & 1) via a transformer and opto-coupled
transistors.
The +5V Return (pin 6) and +3.3V Return (pin 9) are connected internal
to the DC/DC converter. Though the returns are common within the DC/DC
converter, the regulating control loop for each output is sensed directly at its
respective output and return pins. In order to maintain optimum regulation if
ground plane is not used, it is critical that PC board layouts also return each
output to its corresponding return pin.
Filtering and Noise Reduction
All BCP DC/DC Converters achieve their rated ripple and noise specifi cations
using the external input and output capacitors specifi ed in the Performance/
Functional Specifi cations table. In critical applications, input/output noise may
be further reduced by installing additional external I/O caps. 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
mounted as close to the converters as possible.
The most effective combination of external I/O capacitors will be a function of
your particular load and layout conditions. Our Applications Engineers will be
pleased to recommend potential solutions and can discuss the possibility of
our modifying a device’s internal fi ltering to meet your specifi c requirements.
Contact our Applications Engineering Group for additional details.
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 sustained, non-current-limited, input-voltage polarity
reversals exists. For DATEL BCP DC/DC Converters, you should use slow-
blow type fuses with values no greater than the following.
V
IN Range Fuse Value
"D24" Models 6 Amps
"D48" Models 4 Amps
Fuses should be installed in the +Input line.
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 (32V 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 voltage.
Input voltages exceeding the input overvoltage shutdown specifi cation listed
in the Performance/Functional Specifi cations will cause the device to shut-
down. A built-in hysteresis (2V typical for "D24" models, 4V typical for
"D48" models) will not allow the converter to restart until the input voltage
is suffi ciently reduced.
Start-Up Time
The V
IN to VOUT start-up time is the interval between the time at which
a ramping input voltage crosses the turn-on threshold point and the fully-
loaded output voltage enters and remains within its specifi ed accuracy band.
Actual measured times will vary with input source impedance, external input
capacitance, and the slew rate and fi nal value of the input voltage as it
appears to the converter.
The On/Off to V
OUT start-up time assumes the converter has its nominal input
voltage applied but is turned off via the On/Off Control. The specifi cation
defi nes the interval between the time at which the converter is turned on
and the fully loaded output voltage enters and remains within its specifi ed
accuracy band.
On/Off Control (Standard feature)
The On/Off Control (pin 3) may be used for remote on/off operation. As shown
in Figure 1A, the control pin is referenced to the –Input (pin 1) and will be
pulled to a high state internally. The standard BCP converter (no suffi x) is
designed so that it is enabled when the control pin is left open and disabled
when the control pin is pulled low (to less than +0.6V relative to –Input).
Dynamic control of the on/off function is best accomplished with a mechanical
relay or an open-collector/open-drain drive circuit (optically isolated if
appropriate). The drive circuit should be able to sink approximately 1mA for
logic low.
The on/off control function is designed such that the converter can be dis-
abled (pin 3 pulled low for no-suffi x models) while input power is ramping up
and then "released" once the input has stabilized.
For BCP converters confi gured with the negative-polarity option on the On/Off
Control pin ("N" suffi x added to part number), operation is opposite to that
described above. The converter is disabled when the On/Off Control pin is left
open and enabled when pulled low.
TECHNICAL NOTES
Sync Function (Optional feature)
In critical applications employing multiple switching DC/DC converters, it may
be necessary to intentionally synchronize the switching of selected converters.
The BCP Series offers an optional Sync function ("S" suffi x) in place of the
On/Off Control on pin 3. The Sync pin will self-confi gure as either a slave or
master, depending on the circuit application.
Figure 1A. No Suffi x Figure 1B. "N" Suffi x
3
1
4
100k
+INPUT
–INPUT
ON/OFF
CONTROL
3
1
4
21k
3.3V
+INPUT
–INPUT
ON/OFF
CONTROL
4
Loading...