beta
dyne
Key Features
•
•
•
•
•
•
•
Efficiency up to 87%
1500Vdc isolation
Short circuit and thermal protection
2:1 wide input voltage range
Metal case
Six-sided shielding
Industry standard pinout
3W DC/DC C
onverters in
24-P
in
DiP
48V
IN
, ±15V
OUT
BD5000 & BD5000X
24 23 22
beta
dyne
BD5000
15 14 13
MADE IN USA
1 2 3
10 11 12
Functional Description
The BD5000 & BD5000X are 3W DC/DC Converters in a 24-pin DIP configuration. They
accept 36–75V
IN
and provide a dual isolated 15V
OUT
@100mA each. Standard features
include 1500Vdc isolation short circuit and thermal protection and six-sided shielding.
The BD5000 operates from -40°C to +70°C; the BD5000X operates from -40°C to +85°C.
+V IN
1
2
P TRANSFORMER
11
+
Vo1(AUX)
10
RECTIFIER
&
FILTER
-
+
Vo2(MAIN)
15
PWM
14
-
23
-V IN
24
OPTO
ISOLATOR
ERROR
OPAM
13
Vout
ADJ
Typical Block Diagram
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BD5000 & BD5000X DC/DC CONVERTER • BD5000_RevA.PDF • PAGE 1 OF 4
Electrical Specifications
PARAMETER
Input Voltage
Output Short Circuit Duration
Internal Power Dissipation
Unless otherwise specified, all parameters are given under typical
+25°C with nominal input voltage and under full output load conditions.
ABSOLUTE MAXIMUM RATINGS
CONDITION / NOTE
Continuous
1.2
W
MIN
36
TYP
48
MAX
75
UNIT
Vdc
INPUT SPECIFICATIONS
PARAMETER
Input Voltage Range (2:1)
No Load Input Current
Full Load Input Current
Input Filter
Reverse Polarity
Reflected Ripple
See Figure 2
External series-blocking diode
I
O
= FL, C
IN
= 10µF
10
See Short Circuit Protection
150
A
% I
IN
MAX
±2
2
±2
±5
±2
±5
2
±10
TYP
87
1500
500
10
9
1000
125
See Figure 3
See Figure 3
5
20
10
MAX
UNIT
Vdc
%
%V
PP
of V
OUT
CONDITION / NOTE
MIN
36
TYP
48
10
70
MAX
75
UNIT
Vdc
mA
mA
1
Input Surge Current (20µS Spike)
Short Circuit Current Limit
OUTPUT SPECIFICATIONS
PARAMETER
Output Voltage
Output Voltage Accuracy
Ripple & Noise
Output Current
Line Regulation, V
O2
(Main)
Line Regulation, V
O1
(Aux)
Load Regulation, V
O2
(Main)
Load Regulation, V
O1
(Aux)
Temperature Coefficient @ FL
Transient Response Time
Short Circuit Protection
2
Output Adjust range
50% FL to FL to 50% FL, See Figures 2 & 3
By input current limiting
See figure 2
CONDITION / NOTE
±5
MIN
%
UNIT
%
Vdc
Vdc
W
pF
kHz
mS
mS
10% FL to FL (V
O1
fully loaded)
V
O1
fully loaded
V
O2
fully loaded
With specified minimum output capacities
CONDITION / NOTE
MIN
TYP
±15
±1
1
±100
±1
±3
±1
±3
0.02
1
mA
%
%
%
%
%/°C
mS
GENERAL SPECIFICATIONS
PARAMETER
Efficiency
Isolation Voltage (1 min.), Input to Output
Isolation Voltage (1 min.), Output to Output
Isolation Resistance
Isolation Capacitance
Switching Frequency
Turn On Delay
Soft Start Time
ENVIRONMENTAL SPECIFICATIONS
PARAMETER
Operating Temperature Range (Ambient)
Storage Temperature Range
Thermal Shutdown
2
Thermal Resistance
Derating
Humidity
Cooling
MTBF
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CONDITION / NOTE
BD5000, See Figure 1
BD5000X, See Figure 1
Case temperature (Input power must be recycled)
Maximum case temperature is 36°C above ambient
See Figure 1
Up to 95% non-condensing
Free-air convection
per MIL-HNBK-217F (Ground benign, +25°C)
MIN
-40
-40
-60
96
TYP
MAX
+70
+85
+105
UNIT
°C
°C
°C
°C
°C/W
100
36
104
43
1.3x10
6
hours
BD5000 & BD5000X DC/DC CONVERTER • BD5000_RevA.PDF • PAGE 2 OF 4
PHYSICAL CHARACTERISTICS
PARAMETER
Dimensions (L×W×H)
Weight
Case Material
EMI/RFI
0.65 oz. (20.2g)
Coated metal
Six-sided continuous
CONDITION / NOTE
1.25×0.80×0.40 in. (31.75×20.32×10.16mm)
MIN
TYP
MAX
UNIT
Shielding Connection
Case (Pin 3)
1
With a 10µH input inductor and 10µF input capacitor.
2
Input power may need to be recycled if the input overcurrent threshold is exceeded after a hard output short circuit or thermal shutdown.
MECHANICAL SPECIFICATIONS
1
0.80[20.32]
0.600 [15.24]
Pin
1
2
3
10
11
12
13
14
15
22
23
+V
IN
+V
IN
Function
2
3
10 11 12
BOTTOM VIEW
CASE
-V
O1
(AUX)
+V
O1
(AUX)
No Pin
V
OUT
ADJ
-V
O2
(MAIN)
+V
O2
(MAIN)
No Pin
-V
IN
-V
IN
24 23 22
0.100 [2.54]
0.080 [2.03]
1.25[31.75]
15 14 13
0.40[10.16]
DIMENSIONS ARE IN INCH(mm)
TOLERANCE:
.XX ±.02[0.50]
.XXX±.010[0.254]
0.150 [3.81]
0.100 [2.54]TYP.
0.020 [0.51]DIA.
±.003[0.07]
24
PO
5
Po (WATTS)
4
3
2
1
0
40
50
60
70
80
AMBIENT TEMPERATURE
90
100
°C
FIGURE 1. Typical derating curve of BD5000X
DERATING OF BD5000
CURRENT PROBE
FOR RR MEASUREMENTS
L1
10µH
F1
+Vin
1
2
3
+Vin
+Vin
CASE
+Vo1
11
Co
-Vo1
BD5000
10µF
100V
+Vo2
10
15
Co
-Vo2
22
23
24
**OPTIONAL PARTS
**
1000pF
NP
-Vin
-Vin
VoADJ
.001 TO .01µF
1500VDC
13
10K
1000pF
**
**
1000pF
14
10µF
25V
RL
10µF
25V
RL
+
15V(AUX)
-
+
15V(MAIN)
-
-Vin
FIGURE 2. Typical connection diagram of BD5000 and BD5000X (±15V)
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BD5000 & BD5000X DC/DC CONVERTER • BD5000_RevA.PDF • PAGE 3 OF 4
V
IN
+V
O2
100% FL
50% FL
V
O2
1) CH1 50V 5mS
2) CH2 10V 5mS
3) CH1 20V 100µS
4) CH2 100mV 100µS
FIGURE 3. Turn on delay with soft start and transient response of BD5000 and BD5000X
(Obtained with components in Figure 2)
Drain Voltage (Internal)
V
O1
Ripple
V
O2
Ripple
Reflected Ripple
1) CH1
2) CH2
3) CH2
4) CH2
100V 2.5µS
200mV 2.5µS
200mV 2.5µS
4mA
PP
2.5µS
FIGURE 4. Output ripple V
O1
, V
O2
and reflected ripple of BD5000 and BD5000X
(Obtained with components in Figure 2)
BETA DYNE INC • WWW.BETA-DYNE.COM
BD5000 & BD5000X DC/DC CONVERTER • BD5000_DS_RevA.PDF • PAGE 4 OF 4
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