LSM-1.5/16-D12-C Murata Power Solutions Inc, LSM-1.5/16-D12-C Datasheet - Page 7

• Manufacturer Part Number: LSM-1.5/16-D12-C
• Description: DC/DC SM 16A 12-1.5V Non-Iso
• Manufacturer: Murata Power Solutions Inc
• Series: LSMr

Specifications of LSM-1.5/16-D12-C

• Product: Non-Isolated / POL
• Output Power: 24 W
• Input Voltage Range: 10 V to 14 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 1.5 V
• Output Current (channel 1): 16 A
• Output Type: Low Voltage
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Output Reverse Conduction
Many DC/DCs using synchronous rectifi cation suffer from Output Reverse
Conduction. If those devices have a voltage applied across their output before
a voltage is applied to their input (this typically occurs when another power
supply starts before them in a power-sequenced application), they will either
fail to start or self destruct. In both cases, the cause is the “freewheeling” or
“catch” FET biasing itself on and effectively becoming a short circuit.
tion. They employ proprietary gate drive circuitry that makes them immune to
applied output voltages.
Thermal Considerations and Thermal Protection
The typical output-current thermal-derating curves shown below enable
designers to determine how much current they can reliably derive from each
model of the LSM D12 SMTs under known ambient-temperature and air-fl ow
conditions. Similarly, the curves indicate how much air fl ow is required to reli-
ably deliver a specifi c output current at known temperatures.
LSM D12 SMT DC/DC converters do not suffer from Output Reverse Conduc-
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whose heat is generated primarily by I
developed using thermocouples to monitor the inductor temperature and vary-
ing the load to keep that temperature below +110°C under the assorted condi-
tions of air fl ow and air temperature. Once the temperature exceeds +115°C
(approx.), the thermal protection will disable the converter. Automatic restart
occurs after the temperature has dropped below +110°C.
curves on the following pages, LSM D12 SMT's maintain virtually constant
effi ciency from half to full load, and consequently deliver very impressive
temperature performance even if operating at full load.
obviously subject to numerous factors and tolerances not taken into account
here. If you are attempting to extract the most current out of these units under
demanding temperature conditions, we advise you to monitor the output-
inductor temperature to ensure it remains below +110°C at all times.
The highest temperatures in LSM D12 SMTs occur at their output inductor,
As you may deduce from the derating curves and observe in the effi ciency
Lastly, when LSM D12 SMT's are installed in system boards, they are
Non-Isolated, 13-80W SMT DC/DC Converters
Technical enquiries email: [e-mail], tel:
LSM-16A D12 Models
MDC_LSM 16A D12 Models.A05 Page 7 of 12
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R losses. The derating curves were
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