A1215S-2W
12V to 15V isolated 2W DC-DC module with 1500VDC isolation, SIP7 package, 86% efficiency for analog circuits
Product Overview
Description
The A1215S-2W is a high-performance product in Aipu Electronics A series fixed input DC-DC power modules, specifically designed for applications requiring 12V to 15V conversion.
This module uses advanced power conversion technology to achieve efficient voltage conversion in a compact SIP package. With 1500VDC isolation voltage, it can effectively isolate input and output grounds to prevent ground loop interference.
The A1215S-2W is particularly suitable for providing +15V power supply to analog circuits requiring dual positive/negative power supplies, such as operational amplifiers, analog switches, and data acquisition cards. It is an ideal choice for industrial automation, instrumentation, and medical equipment applications.
Product Series
A
Primary Application
Operational amplifier power supply
Key Features
- Input voltage 12VDC (10.8-13.2V)
- Output voltage 15VDC, power 2W
- Isolation voltage 1500VDC, prevents ground loop interference
- High efficiency 86%, low heat generation
- SIP7 package, easy to install
- Industrial temperature range -40C to +85C
- Output short circuit protection, automatic recovery
- Low ripple noise, suitable for analog circuits
Specifications
| Input Voltage | 12VDC (10.8-13.2V) |
|---|---|
| Output Voltage | 15VDC |
| Output Power | 2W |
| Output Current | 133mA |
| Isolation Voltage | 1500VDC |
| Efficiency | 86% typ |
| Ripple Noise | 60mVp-p max |
| Operating Temperature | -40C ~ +85C |
| Package | SIP7 |
| Dimensions | 14.0x8.5x10mm |
| Protection | Short circuit protection, overcurrent protection |
Applications
Operational amplifier power supply
Power conversion and supply
Analog circuit power supply
Power conversion and supply
Data acquisition cards
Data acquisition and conversion
Industrial control systems
Industrial automation and control
Instrumentation
Electronic system design
Medical equipment
Medical electronics
Positive power supply for dual power supply systems
Power conversion and supply
FAE Expert Insights
"I have used the A1215S-2W in multiple industrial automation and instrumentation projects, and this module performs very stably and reliably. What impressed me most is its 86% high efficiency, which is at an excellent level in the 2W power class, meaning lower heat generation and higher system reliability. I once used more than 20 A1215S-2W modules for op-amp power supply in a multi-channel data acquisition system, running continuously for two years without any failures. The module's ripple control is very good, fully sufficient for general analog circuits, and for high-precision applications, adding a simple LC filter can meet requirements. I particularly like using it to build positive/negative dual power supply systems, paired with negative power modules to provide perfect plus/minus 15V power supply for precision op-amps. In terms of cost performance, the A1215S-2W is more than 40% cheaper than imported brands, but performance and quality are not inferior at all. For applications requiring 12V to 15V conversion, I strongly recommend this module."
High efficiency 86%, low ripple, convenient for building dual power supply systems, excellent cost performance
— Zhang Wei, BeiLuo
Frequently Asked Questions
Is A1215S-2W suitable for op-amp power supply?
The A1215S-2W is very suitable for operational amplifier power supply. The 15V output can provide sufficient power supply voltage for most general-purpose op-amps (such as LM358, OP07, TL081, etc.) to achieve maximum dynamic range. The 2W power is sufficient to drive multiple op-amps. Low ripple noise (60mVp-p) ensures no additional noise is introduced into analog signals. The 1500VDC isolation can effectively isolate digital and analog grounds, improving system anti-interference capability. For op-amp applications requiring dual positive/negative power supplies, it can be used with A1212S-2W (12V to -12V) or A1215S-2W (12V to -15V).
For op-amp power supply, A1215S-2W provides clean 15V positive power supply, paired with negative power module to achieve dual power supply.
What is the efficiency of A1215S-2W? Does it generate much heat?
The A1215S-2W has a typical efficiency of 86%, which is at a high level among 2W power class DC-DC modules. Calculated at full load 2W output, input power is about 2.33W, and loss power is only 0.33W. This power consumption level generates very little heat, with module surface temperature rise typically less than 20C. Even at 85C ambient temperature, module surface temperature is about 105C, far below the maximum operating temperature of internal components (usually 125C or 150C). Therefore, A1215S-2W usually does not require additional heat dissipation measures, only needing to ensure certain air circulation space around the module. For sealed or high-temperature environments, it is recommended to reserve more space or provide slight ventilation.
86% high efficiency means low heat generation, no dedicated heat dissipation required, suitable for sealed spaces and high-temperature environments.
Can A1215S-2W be used with negative power modules?
The A1215S-2W can work perfectly with negative power modules to build a positive/negative dual power supply system. Common combinations include: 1) A1215S-2W (+15V) + A1215S-2W reverse connection (-15V): provides symmetrical power supply for precision op-amps requiring plus/minus 15V; 2) A1215S-2W (+15V) + A1212S-2W (-12V): provides power for mixed-signal circuits requiring +15V/-12V. Using two independent DC-DC modules has better isolation performance and flexibility than using a dual-output module. The inputs of both modules can be paralleled to the 12V power supply, with outputs providing positive and negative voltages respectively, and common ground connection forming a dual power supply.
When building a dual power supply system, using two independent modules is more flexible than dual-output modules, with better isolation performance.
Does A1215S-2W ripple noise affect analog circuits?
The A1215S-2W output ripple noise typical value is 60mVp-p, which is acceptable for general analog circuit applications. For precision analog circuits particularly sensitive to noise (such as high-precision ADCs, weak signal amplifiers, etc.), the following measures are recommended: 1) Add LC filter or pi-type filter at the output end, which can reduce ripple to below 10mV; 2) Use post-stage LDO regulator (such as 78L15) to further reduce noise; 3) Add 0.1uF and 10uF decoupling capacitors near the op-amp power supply pins; 4) Reasonable layout, keeping the power module away from sensitive analog circuits. After appropriate filtering, A1215S-2W can provide clean power supply for 16-bit or even 24-bit ADCs, meeting the requirements of most precision measurement applications.
For noise-sensitive applications, add output filtering or use LDO post-stage regulation, which can reduce ripple to below 10mV.
Is A1215S-2W 1500VDC isolation voltage sufficient?
The A1215S-2W 1500VDC isolation voltage is sufficient for the vast majority of industrial and commercial applications. This isolation level can effectively prevent: 1) Ground loop interference: when the system has multiple ground points, isolation can cut off ground loops to prevent noise coupling; 2) Common-mode interference: isolation can block common-mode noise to protect sensitive circuits; 3) Power supply fault propagation: when a fault occurs on one side, isolation can prevent fault propagation to the other side. For general industrial control, instrumentation, communication equipment and other applications, 1500VDC isolation fully meets requirements. Only in high-voltage power systems (such as power monitoring, relay protection, etc.) or medical equipment (such as devices with direct patient contact) is it necessary to select 2500VDC or higher isolation level modules.
General industrial and instrumentation applications select 1500VDC, power and medical applications select 2500VDC or higher.