Datasheet
Package Availability, Models, Samples & Pricing
General Description
The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation (SSPR) technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller (Please see page 14 for more details). The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM5115MTC | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
|
LM5115MTCX | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
|
LM5115SD | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
|
LM5115SDX | ABCD150XV1 | 0 | 3868 | 0 | 0 | 2595000 | 2 | 736338335
|
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Application Notes
| Title | Size in Kbytes |
Date |
 |
| AN-1368: Application Note 1368 LM5115/5025A Evaluation Board |
1364 Kbytes |
5-Apr-05 |
Download |
| AN-1367: Application Note 1367 LM5115 HV DC Evaluation Board |
943 Kbytes |
18-Oct-05 |
Download |
AN-1367 (Chinese): Application Note 1367 LM5115 HV DC Evaluation Board
|
614 Kbytes |
|
 |
| AN-1875: Application Note 1875 LM5073HE Evaluation Board With Active Bridge |
230 Kbytes |
2-Jul-08 |
Download |
| AN-1574: Application Note 1574 LM5073 Evaluation Board |
464 Kbytes |
24-Apr-07 |
Download |
More Application Notes
| Title | Size in Kbytes |
Date |
 |
| AN-1542: Application Note 1542 LM5115A Evaluation Board |
1789 Kbytes |
17-Mar-07 |
Download |
AN-1542 (Chinese): Application Note 1542 LM5115A Evaluation Board
|
669 Kbytes |
|
 |
| AN-1628: Application Note 1628 Minimizing FET Losses For a High Input Rail Buck Converter |
91 Kbytes |
5-Sep-07 |
Download |
AN-1628 (Japanese): Application Note 1628 Minimizing FET Losses For a High Input Rail Buck Converter
 |
115 Kbytes |
|
 |
AN-1628 (Chinese): Application Note 1628 Minimizing FET Losses For a High Input Rail Buck Converter
|
283 Kbytes |
|
 |
[Information as of 8-Nov-2009]
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