BWR33W Datasheet, PDF (3/12 Pages) Murata Power Solutions Inc. – Regulated 3.3V and 5V outputs

Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀
Input Voltage Range:
D12 Models
D24 Models
D48 Models
Overvoltage Shutdown: ➁
D12 Models
D24 Models
D48 Models
Start-Up Threshold: ➁
D12 Models
D24 Models
D48 Models
Undervoltage Shutdown: ➁
D12 Models
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode:
Off, OV, UV, Thermal Shutdown
Input Reflected Ripple Current:
Source Impedance
D12 Models
D24/D48 Models
Internal Input Filter Type
Reverse-Polarity Protection: ➁
D12 Models
D24 Models
D48 Models
On/Off Control (Pin 4): ➁ ➂ ➄
D12, D24 & D48 Models
Input
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
19-23 Volts (21V nominal)
37-42 Volts (40V nominal)
77-81 Volts (79V nominal)
9-10 Volts (9.3V nominal)
16.5-18 Volts (17V nominal)
34-36 Volts (35V nominal)
8.5-9.6 Volts (9.3V nominal)
16-17 Volts (16.5V nominal)
32.5-35 Volts (34V nominal)
See Ordering Guide
10mA typical
<0.1, no external input filtering
200mAp-p (150mAp-p typical)
250mAp-p (225mAp-p typical)
Pi (0.022µF - 4.7µH - 2.46µF)
1 minute duration, 6A maximum
1 minute duration, 4A maximum
1 minute duration, 2A maximum
On = open or 13V to +VIN, IIN = 50µA max.
Off = 0-0.8V, IIN = 1mA max.
Output
VOUT Accuracy:
5V Output
3.3V Output
±3% maximum
±1.5% maximum
Minimum Loading Per Specification No load, see Performance Specifications
Ripple/Noise (20MHz BW) ➁ ➃
See Ordering Guide
Line/Load Regulation ➁
See Ordering Guide
Efficiency
See Ordering Guide / Efficiency Curves
Cross Regulation: ➁
5V Output (5V@0.6A, 3.3V@0.7-7A) ±6% maximum
3.3V Output (3.3V@0.7A, 5V@0.6-6A) ±0.5% maximum
Trim Range ➁
±5%
Isolation Voltage:
Input-to-Output
Isolation Capacitance
Isolation Resistance
1500Vdc minimum
470pF
100M
Primary to Secondary Insulation Level
D12/D24 Models
Operational
D48 Models
Basic
Temperature Coefficient
±0.02%/per°C
Current Limit Inception: ➁
5V @ 95% VOUT (3.3V @ 0A)
3.3V @ 98.5% VOUT (5V @ 0A)
7.6-9.0 Amps
11.3-12.7 Amps
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Dual Output BWR Models
Mixed Voltage, 5V AND 3.3V, 2” x 2”
33 Watt DC/DC Converters
Output (continued)
Short Circuit Current: ➁
5V Output
3.3V Output
5 Amps average, continuous
6 Amps average, continuous
Overvoltage Protection: ➁
5V Output
3.3V Output
Magnetic feedback
6.8 volts
4.5Volts
Maximum Capacitive Loading
D12 Models
3.3V
5V
D24, D48 Models 3.3V
5V
1000µF
470µF
2000µF
1000µF
Dynamic Characteristics
Dynamic Load Response ➁
5V (50-100% load step to 4% VOUT) 300µsec maximum
3.3V (50-100% load step to 2.5% VOUT) 300µsec maximum
Start-Up Time ➁
VIN to VOUT
On/Off to VOUT
20msec maximum
15msec maximum
Switching Frequency
285kHz (±15kHz)
Environmental
MTBF ➅
D12 Models
D24/D48 Models
Bellcore, ground fixed, full power,
+25°C operating ambient temperature
1.3 million hours
1.67 million hours
Operating Temperature (Ambient) ➁
Without Derating:
D12 Models
D24 Models
D48 Models
With Derating
–40 to +50°C
–40 to +60°C
–40 to +68°C
To +100°C (See Derating Curves)
Case Temperature
Maximum Operational
For Thermal Shutdown ➁
+100°C
+110°C minimum, +117°C maximum
Storage Temperature
–40 to +120°C
Flammability
UL 94V-0
Dimensions
Internal Case Connection
D12/D24 Models
D48 Models
Case Material
Pin Material
Weight
Physical
2" x 2" x 0.45" (50.8 x 50.8 x 11.43mm)
–Input (Pin 2)
+Input (Pin 1)
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Gold-plated copper alloy
2.7 ounces (76.5 grams)
➀ Balanced “full-load” is 5V @ 3.3A/3.3V @ 5A. All models are specified with external 1µF
ceramic output capacitors.
➁ See Technical Notes/Graphs for details.
➂ Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
may cause permanent damage.
➃ Output noise may be further reduced with the installation of additional external output capacitors.
See Technical Notes.
➄ 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).
➅ Demonstrated MTBF available on request.
MDC_BWR 33W Models.A05 Page 3 of 12