| Model | RDS(on) @10V | Max VDS | Current | Package | Best For | | -------------- | ------------ | ------- | ------- | ------- | ------------------------------- | | | ~12 mΩ | 40V | 10A | DFN-8 | Efficiency + small size | | Infineon BSC070N10 | 7 mΩ | 100V | 80A | SuperSO8 | High power, large size | | TI CSD18532Q5B | 3.8 mΩ | 60V | 100A | SON5x6 | Ultra-low loss, cost high | | ON Semi NTMFD4901 | 15 mΩ | 30V | 10A | DFN-8 | Similar spec, higher RDS(on) |
You will find it in 18V battery chargers. Hobbyists often look for this chip when trying to "hack" or modify chargers—for example, changing a charger from a 5S (18V) to a 7S configuration or adjusting the charging current. Similar Components: It is sometimes confused with the
It’s possible that:
: The IC acts as a bridge for Negative Temperature Coefficient (NTC) thermistors embedded inside the battery, immediately halting input power if a thermal threshold is crossed. afm8316 best
Traditional isolated flyback converters rely on opto-couplers to feed the output status back to the primary controller. Opto-isolators degrade over time, suffer from propagation delays, and are susceptible to harsh temperature fluctuations. By utilizing a primary-side sensing mechanism, the AFM8316 stabilizes internally. This inherently improves system reliability and saves physical board space. 2. Superior Boundary Mode Efficiency
: Charging lithium-ion batteries below 0°C can cause permanent plating of the internal anodes. Keep your charging station in a temperature-controlled space (ideally 10°C to 25°C).
Переделка зарядника на AFM8316 - В помощь начинающему | Model | RDS(on) @10V | Max VDS
Many users mistake the AFM8316 for a standard battery management system (BMS) chip. In reality, it operates strictly within the of the charger itself.
The boasts an exceptionally low on-state resistance, which is critical for reducing conduction losses (
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Overcoming the Voltage Headroom Bottleneck
When working with an "AFM8316" chip, physical inspection provides the most reliable identification method.
: Employs Quasi-Resonant Boundary Mode operation, significantly decreasing switching losses and optimizing thermal efficiency.
The of the tool charger you are working on (e.g., Einhell, Ozito).
Secondary Transformer Output (AC to DC Stepdown) │ ▼ ┌─────────────────┐ │ LM358 Op-Amp │◄─── Current/Voltage Feedback Loop └────────┬────────┘ │ ▼ ┌────────────────────────────────────────────────────────┐ │ AFM8316 IC │ │ [TSSOP-20 Control & Thermal Fault Interfacing] │ └───────────────────────┬────────────────────────────────┘ │ ▼ P-MOSFET Gate Control (G) ──► Charging Terminals 1. Overcoming the Voltage Headroom Bottleneck