BUC30 Series 20130814A

Isolated DC-DC Converters
BUC30Series -- 30Watt
Bothhand USA
Features
Wide 2 : 1 Input Voltage Range(9~18V,18~36V,36~75V)
High Efficiency up to 91%
Remote On/Off
Input / Output Isolation Voltage: 1.5kVDC
Operating Temperature Range: -40°C to +85°C
Output Short Circuit Protection:
Hiccup, continuous & Auto Recovery
Over Temperature Protection
Shielded Metal Case with Insulated Baseplate
Customer Design Available
Optional Heat-sink
Safety Standard / Approval : IEC / EN 60950-1
Technical Specification
Model
Number
Input Voltage
Range
Description
The BUC30 Series are isolated 30W DC/DC converters.
Designed with highly efficiency, allow the operating
temperature range of these units to be -40°C to +85°C (with
derating) in a 50.8×25.4×10.2mm shielded metal case. Further
features include wide 2 : 1 input voltage range, remote on/off
control, trimmable output, short-circuit protection, over voltage
protection and over temperature protection.
Applications
These converters are well suitable for battery operated
equipment, measurement equipment, telecom, wireless
network, Industry control system, everywhere where isolated,
tightly regulated voltages and compact size are required.
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
Voltage
(V)
Output Current (mA)
Min. Load
(1)
Input Current (mA)
Full. Load
No Load
Full Load
(2)
Capacitive
Eff .
(3)
(%) Load, max.
(uF)
BUC30-12S7
1.5
0
8500
85
1476
78
56000
BUC30-12S9
2.5
0
8000
75
2137
82
47000
BUC30-12S0
3.3
0
7500
100
2611
83
47000
3148
85
33000
BUC30-12S1
BUC30-12S2
9~18V
Nominal:12V
BUC30-12S3
5.1
0
6000
150
12
50
2500
70
3012
87
4700
15
150
2000
30
3012
87
3300
BUC30-12D1
±5
0
±3000
130
3012
87
10000
BUC30-12D2
±12
±20
±1250
120
3012
87
2200
BUC30-12D3
±15
±100
±1000
100
2976
88
1800
BUC30-24S7
1.5
0
8500
35
699
80
56000
BUC30-24S9
2.5
0
8000
35
1029
85
47000
BUC30-24S0
3.3
0
7500
40
1242
87
47000
5.1
0
6000
50
1500
89
33000
BUC30-24S1
BUC30-24S2
18~36V
Nominal:24V
12
50
2500
85
1453
90
4700
BUC30-24S3
15
20
2000
80
1453
90
3300
BUC30-24D1
±5
0
±3000
50
1453
90
10000
BUC30-24D2
±12
±50
±1250
50
1453
90
2200
BUC30-24D3
±15
0
±1000
50
1453
90
1800
BUC30-48S7
1.5
0
8500
20
345
81
56000
BUC30-48S9
2.5
0
8000
15
508
86
47000
BUC30-48S0
3.3
0
7500
20
614
88
47000
BUC30-48S1
5.1
12
0
150
6000
2500
25
25
741
727
90
90
33000
4700
BUC30-48S3
15
20
2000
25
718
91
3300
BUC30-48D1
±5
0
±3000
25
727
90
10000
BUC30-48D2
±12
0
±1250
25
718
91
2200
BUC30-48D3
±15
0
±1000
25
718
91
1800
BUC30-48S2
36~75V
Nominal:48V
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Rev:20130814A
Page 1 of 8
Isolated DC-DC Converters
BUC30Series -- 30Watt
Bothhand USA
Input Specifications
Input voltage
12V nominal input
9-18V
24V nominal input
18-36V
48V nominal input
36-75V
Input filter
Pi type
12V input
25V
Input surge voltage
24V input
50V
(100ms max.)
48V input
100V
Input reflected ripple current
Nominal Vin and full load
Start up time
Nominal Vin and constant resistive load
Remote ON/OFF
120mAp-p typ.
80ms typ.
Open or 3.5V<Vr<12V
Converter: ON
Short
Converter: OFF
(4)
or 0V<Vr<0.7V
Sourcing current of remote control pin
Nominal Vin
<0.2 mA
Idle input current (at Remote OFF state)
Nominal Vin
<15 mA
Environmental Specifications
-40°C to +85°C (with derating)
Operating ambient temperature
+100°C
Maximum case temperature
-55°C to +105°C
Storage temperature range
95% RH max.
Relative humidity
±0.02% / °C max.
Temperature coefficient
Output Specifications
30 Watts max.
Output power
Voltage accuracy
Full load and nominal Vin
±1%
See table
Minimum load
Line regulation
LL to HL at full load
25% load to full load
Load Regulation
Balanced load
±0.5%
Single
±0.8%
Dual
±0.5%
Unbalanced load 25% to 100% full load
Ripple and Noise
±3%
20MHz bandwidth
(Measured with a 2.2uF/50V MLCC)
85mVp-p max.
(120mVp-p for 12/15Vout)
1.5Vout models
3V
2.5Vout models
3.6V
Over voltage protection
3.3Vout models
3.9V
(Zener Diode Clamp)
5Vout models
6.2V
12Vout models
15V
15Vout models
18V
Capacitive load
Over load protection
See table
% of full load at nominal input
110% min.
115°C typ.
Thermal shutdown
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Rev:20130814A
Page 2 of 8
Isolated DC-DC Converters
BUC30Series -- 30Watt
Bothhand USA
Short circuit protection
Hiccup, continuous(Auto Recovery)
Transient response settling time
400µs typ
50% load step change
(1.7ms for 1.5/2.5/3.3Vout)
Transient response over shoot
di/dt=0.8A/µs
≤ ±5% of Vo
(≤ ±10% for 1.5/2.5/3.3Vout)
General Specifications
Efficiency
Nominal input
Isolation voltage
Input to output
Isolation resistance
See table
1500VDC
9
500VDC
10 Ohms min.
Isolation capacitance
1200pF typ.
Switching frequency
300kHz typ.
6
Reliability, calculated MTBF
1.06 × 10 Hrs
Physical Specifications
Case material
Nickel-coated copper
Base material
Non-conductive black plastic
Silicon rubber (UL94 V-0)
Potting material
2.0 × 1.0 × 0.4 Inch
Dimensions
(50.8 × 25.4 × 10.2 mm)
32.0g (1.13oz) typ.
Weight
BUC30 Series
BUC30 Series
(5)
Power Derating Curve with Heatsink
1 20
120
1 00
100
80
60
40
20
0
-4 0
-2 0
0
20
40
65
60
80
10 0
12 0
Output Power (%)
Output Power (%)
Power Derating Curve without Heatsink
Ambient Temp.TA (℃)
80
60
40
20
0
-40
-20
0
20
40
60
71
80
100
120
Ambient Temp.TA (℃)
BUC30-48S1
BUC30-48S1
Input Voltage vs. Efficiency
Output Current vs. Efficiency
Efficiency (%)
Efficiency (%)
(5)
Input voltage (V)
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Output Current (A)
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Rev:20130814A
Page 3 of 8
Bothhand USA
Isolated DC-DC Converters
BUC30Series -- 30Watt
BUC30-48S1
BUC30-48S1
Transient Response at 50%~100% Max Load
Loop Gain & Phase at Vi=48V,Full Load
Note
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. For each output.
4. Short to -Vin (Pin 2).
5. Based on BUC30-48S1.
Mechanical Dimensions
Pin
1
2
3
4
5
6
Pin Assignment
Single
Dual
+Vin
+Vin
-Vin
-Vin
Remote On/Off
+Vout
-Vout
Trim
+Vout
Common
-Vout
Unit: mm [inch]
Tolerance:±0.5[0.02]
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Rev:20130814A
Page 4 of 8
Bothhand USA
Isolated DC-DC Converters
BUC30Series -- 30Watt
Heat-sink (Option)
Material: Aluminum
Weight:
10g (0.35oz)
Note:
The product label on converter has to be
removed before mounting the heat-sink.
For volume orders, converters will be supplied
with heat-sink already mounted. Please contact
factory for quotation.
Separate heat-sinks are only available for
prototypes and small quantity orders.
Specifications subject to change without notice.
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Rev:20130814A
Page 5 of 8
Isolated DC-DC Converters
BUC30Series -- 30Watt
Bothhand USA
Test Configurations
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
A
A
DC
Power Supply
DC/DC
converter
V
V
Load
◎DC Power Supply: It offers a wide voltage and current range precisely.
◎Current meter (A): Accuracy 200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A
2 ranges+(0.3% rdg + 2 digits).
◎Voltage meter (V): Accuracy +(0.03% rdg + 4 digits).
◎Load: At full load.
◎Wires: The resistance of the wires must be small.
1. Input voltage range: Narrow input voltage range(±10%)、wide input voltage range (2:1 and 4:1)。
EX: Narrow input voltage range(±10%)
5V nominal input 4.5~5.5V
12V nominal input 10.8~13.2V
24V nominal input 21.6~26.4V
Wide input voltage range 2:1
5V nominal input 12V nominal input 24V nominal input 48V nominal input 4.5~9V
9~18V
18~36V
36~75V
Wide input voltage range 4:1 (W)
24V nominal input 9~36V
48V nominal input 18~75V
2. Input power :
Pin = Vin x Iin
Vin:Input voltage
Iin:Input current
Pout = Vout x Iout
Vout:Output voltage
Iout:Output current
3. Output power :
4. Efficiency :
Efficiency =
Pout
Pin
x100%
Pout: Output power
Pin: Input power
5. Voltage accuracy:
│
│Vout-Vout(nominal)│
Vout
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x100%
Vout:Output voltage
Vout(nominal):Nominal output voltage
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Rev:20130814A
Page 6 of 8
Isolated DC-DC Converters
BUC30Series -- 30Watt
││││
││││
Bothhand USA
6. Line regulation: (1) Wide input voltage range and regulated output voltage series.
│Vout(LL)-Vout(HL)│
│
Vout(LL)
LL: Low Line input voltage
HL: High Line input voltage
x100%
(2) Narrow input voltage range(±10%)and unregulated output voltage series.
Δ Vout
Δ Vin
ΔVout = Vout(+10%)-Vout(-10%) x100%
Vout
Line regulation=
Vout(+10%):Output voltage at Vin = 1.1xVin(nominal)&full load
Vout(-10%):Output voltage at Vin = 0.9xVin(nominal)&full load
Vout:Output voltage at Vin = Vin(nominal)&full load
ΔVin = Vin(+10%)-Vin(-10%) x100%
Vin(nominal)
Vin(+10%):Input voltage = 1.1xVin(nominal)
Vin(-10%):Input voltage = 0.9xVin(nominal)
Vin(nominal):Nominal Input voltage
7. Load regulation :
│ x100%
│Vout(FL)-Vout(NL)│
Vout(FL)
Vout(FL): Output voltage at full load
Vout(NL): Output voltage at 25% full load or 10% full load
8. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
Ripple&Noise
Noise
Ripple
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Rev:20130814A
Page 7 of 8
Isolated DC-DC Converters
BUC30Series -- 30Watt
Bothhand USA
Output Ripple&Noise measurement test circuit: as shown below.
Copper strip
DC/DC
converter
Co
Oscilloscope
Load
Copper strip
Co: usually 0.47uF.
9. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is
120
1 20
Output Power (%)
Output Power (%)
drawn from the output and the device is already running. The temperature derating curve shows the operating
power-temperature range. As shown below.
1 00
80
60
40
20
0
-40
-20
0
20
40
65
60
80
10 0
120
Ambient Temp.TA (℃)
100
80
60
40
20
0
-40
-20
0
20
40
60
71
80
100
120
Ambient Temp.TA (℃)
10. Switching frequency: The nominal operating frequency of the DC-DC converters.
11. Input to output isolation: The dielectric breakdown strength test between input and output circuits. This is the
isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute.
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Rev:20130814A
Page 8 of 8
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