OKY-T10_10 Datasheet, PDF (4/16 Pages) Murata Power Solutions Inc. – Programmable DOSA-SMT 10/16-Amp DC/DC Converters

OKY-T/10 & T/16-W5 Series
Programmable DOSA-SMT 10/16-Amp DC/DC Converters
Performance and Functional Specifications
See Note 1
Input
Input Voltage Range
See Ordering Guide and Note 7.
Isolation
Not isolated
Start-Up Voltage
2.05V (OKY-T/16-W5)
Undervoltage Shutdown (see Note 15) 1.90 V (OKY-T/16-W5)
Overvoltage Shutdown
None
Reflected (Back) Ripple Current (Note 2) 20 mA pk-pk
Internal Input Filter Type
Capacitive
Recommended External Fuse
10A ( OKY-T/10-W5)
15A ( OKY-T/16-W5)
Reverse Polarity Protection
N/A. See fuse information.
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output in Short Circuit
Low Line (Vin=Vmin)
See Ordering Guide
0.4 A2Sec.
5 mA
60 mA
5.41A. (OKY-T/10-W5)
14.63A. (OKY-T/16-W5)
Remote On/Off Control (Note 5)
Negative Logic (“N” model suffix)
Current
Positive Logic (“P” model suffix)
Current
ON = Open pin or ground to +0.4V. max.
OFF = +1.5V min. to +Vin max.
1 mA
ON = Open pin (internally pulled up) or
+1.5Vdc to +Vin max.
OFF = Ground pin to +0.4V. max.
1 mA
Output
Output Power
36W (OKY-T/10-W5)
52.8W (OKY-T/16-W5)
Minimum Loading
No minimum load
Accuracy (50% load, untrimmed)
±2 % of Vnominal
Voltage Output Range (Note 13)
See Ordering Guide
Overvoltage Protection (Note 16)
None
Temperature Coefficient
±0.02% per °C of Vout range
Ripple/Noise (20 MHz bandwidth)
See Ordering Guide and note 8
Line/Load Regulation
See Ordering Guide and note 10
Efficiency
See Ordering Guide
Maximum Capacitive Loading (Note 14)
Cap-ESR=0.001 to 0.01 Ohms
1,000 μF
Cap-ESR >0.01 Ohms
5,000 μF (min. cap. load 0 μF)
Current Limit Inception (Note 6)
16A ( OKY-T/10-W5)
(98% of Vout setting, after warm up) 39A ( OKY-T/16-W5)
Short Circuit Mode
Short Circuit Current Output
Protection Method
Short Circuit Duration
Prebias Startup
1A (OKY-T/10-W5)
2A (OKY-T/16-W5)
Hiccup autorecovery upon overload
removal. (Note 17)
Continuous, no damage
(output shorted to ground)
Converter will start up if the external
output voltage is less than Vnominal.
Tracking/Sequencing
Slew Rate
Tracking accuracy, rising input
Tracking accuracy, falling input
2 Volts per millisecond, max.
Vout = ±200 mV max. of Sequence In
Vout = ±400 mV max. of Sequence In
Dynamic Characteristics
Dynamic Load Response
100μSec max. to within ±2% of final value
(50-100% load step, di/dt = 1A/μSec) with 2 x 150 μF polymer external caps.
Start-Up Time
8 mSec for Vout=nominal (Vin On)
(Vin on or On/Off to Vout regulated) 6 mSec for Vout=nominal (Remote On/Off)
Switching Frequency
300 KHz
Environmental
Calculated MTBF
Telecordia method (4a)
TBD
Calculated MTBF
MIL-HDBK-217N2 method (4b)
TBD
Operating Temperature Range (Ambient, vertical mount)
See derating curves
-40 to +85°C. with derating (Note 9)
Operating PC Board Temperature
-40 to +100°C. max., no derating (12)
Storage Temperature Range
-55 to +125° C.
Thermal Protection/Shutdown
+130°C.
Relative Humidity
to 85%/+85°C., non-condensing
Physical
Outline Dimensions
See Mechanical Specifications
Weight
0.1 ounces (2.8 grams)
Safety
Designed to meet UL/cUL 60950-1, CSA-
C22.2 No. 60950-1, IEC/EN 60950-1
Restriction of Hazardous Substances
RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
MSL Rating
2
Absolute Maximum Ratings
Input Voltage (Continuous or transient) 0 V.to +5.8 Volts max.
On/Off Control
0 V. min. to +Vin max.
Input Reverse Polarity Protection
See Fuse section
Output Current (Note 7)
Current-limited. Devices can withstand a
sustained short circuit without damage.
The outputs are not intended to accept
appreciable reverse current.
Storage Temperature
-55 to +125 °C.
Lead Temperature
See soldering specifications
Absolute maximums are stress ratings. Exposure of devices to greater than any of
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 or recommended.
Specification Notes:
(1) Specifications are typical at +25 °C, Vin=nominal (+5V.), Vout=nominal (+3.3V), full load, external caps and
natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced
airflow.
All models are tested and specified with external 1 μF paralleled with 10μF ceramic output capacitors and a
22 μF external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accom-
modate our test equipment and may not be required to achieve specified performance in your applications.
However, Murata Power Solutions recommends installation of these capacitors. All models are stable and
regulate within spec under no-load conditions.
(2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x
100 μF tantalum, Cbus=1000 μF electrolytic, Lbus=1 μH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher
temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total
RMS current over time does not exceed the Derating curve.
(4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed
conditions, Tpcboard=+25 °C, full output load, natural air convection.
(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full
output load, natural convection.
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22 Mar 2010 MDC_OKY_T10T16.W5.A03 Page 4 of 16