The LM25115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM25115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). 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 LM25115A 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.

• Power-up/Power-down Tracking
• Self-synchronization to Main Channel Output
• Leading Edge Pulse Width Modulation
• Valley Current Mode Control
• Standalone DC/DC Synchronous Buck Mode
• Operates from AC or DC Input up to 42V
• Wide 4.5V to 30V Bias Supply Range
• Wide 0.75V to 13.5V Output Range.
• Top and Bottom Gate Drivers Sink 2.5A Peak
• Adaptive Gate Driver Dead-time Control
• Wide Bandwidth Error Amplifier (4MHz)
• Programmable Soft-start
• Thermal Shutdown Protection
• TSSOP-16 package

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• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 42
• Vout (Min) (V)
• 0.75
• Vout (Max) (V)
• 13.5
• Switching frequency (Min) (kHz)
• 1000
• Switching frequency (Max) (kHz)
• 1000
• Features
• Frequency Synchronization
• Regulated outputs (#)
• 1
• Number of phases
• 1
• Rating
• Catalog

LM25115A的完整型号有：LM25115AMT/NOPB、LM25115AMTX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM25115AMT/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：92个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM25115AMT/NOPB的批量USD价格：1.278（1000+）

LM25115AMTX/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM25115AMTX/NOPB的批量USD价格：1.065（1000+）

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