Orderable parts
| Type number | Orderable part number | Ordering code (12NC) | Package | Buy from distributors |
|---|---|---|---|---|
| NEX81915D | NEX81915DY | 935692744518 | SOT96-2 | Order product |
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Click here for more informationNEX81915D
Fast turn-off dual synchronous rectifiers (SR) controller
NEX81915 is a dedicated controller IC for synchronous rectification on the secondary side of resonant converters. It supports operation in discontinuous conduction mode (DCM), continuous conduction mode (CCM) and critical conduction mode (CRM). It has two driver stages for driving the SR MOSFETs. By detecting the Vds of the rectifier, the MOSFETs can be reliably switched on and off, thereby replacing Schottky diodes and improving the efficiency of the resonant converter.
NEX81915 regulates the forward drop voltage of an external synchronous rectifier (SR) MOSFET by decreasing the gate voltage. This allows the SR FET to be turned off quickly when the Vds becomes positive.
NEX81915 is a green and energy-saving product. The turn-on delay time will be increased and the drive current will be decreased to minimize the power consumption at light load. The gate drive will be turned off when the load current reduces to a certain level, thus limiting the IC current to a very low level. The light load efficiency can be improved.
The device is available in SO8 (SOT96-2) package.
Features and benefits
- 120 V voltage rating support maximum 48 V output
- Supports CCM, CRM and DCM operation
- Works with Standard and Logic level MOSFETs
- Wide supply voltage ranges from 4.8 V to 35.0 V
- 140 μA low quiescent current in light load mode
- Regulation level of −37 mV for driving low-ohmic MOSFETs
- Adaptive gate drive for fast turn-off at the end of conduction
- Interlock function for channel A and B
- Available in an SO8 package
- ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C2a exceeds 500 V
Applications
- AC/DC adapters
- PC power supplies
- LCD TV power supplies
- Isolated DC/DC power converters
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| NEX81915D | NEX81915DY (935692744518) |
Development | N81915 |
SO8 (SOT96-2) |
SOT96-2 | SOT96-2_518 |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| NEX81915D | NEX81915DY | NEX81915D |
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Documentation (4)
| File name | Title | Type | Date |
|---|---|---|---|
| NEX81915 | Fast turn-off dual synchronous rectifiers (SR) controller | Data sheet | 2025-07-11 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| SOT96-2 | Plastic, small outline package; 8 leads; 1.27mm pitch; 4.9 mm x 3.9 mm x 1.75mm body | Package information | 2025-04-25 |
| SOT96-2_518 | SO8; Reel dry pack for SMD, 13"; Q1/T1 product orientation | Packing information | 2025-07-10 |
Support
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Longevity
The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.
Models
No documents available
Ordering, pricing & availability
| Type number | Orderable part number | Ordering code (12NC) | Status | Packing | Packing Quantity | Buy online |
|---|
Sample
As a Nexperia customer you can order samples via our sales organization.
If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.
How does it work?
The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.