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Why Galaxy 'Super Fast Charging' Needs PPS: Why a 45W Charger Can Stop at 25W, and the 3 Things to Check
You got a 45W or 65W charger for your Galaxy, yet the screen never says “Super fast charging.” The reason: Galaxy’s fast-charge requirement isn’t just wattage. Samsung says Super Fast Charging (SFC) 2.0 needs a device that supports USB PD 3.0 and Direct Charging, with the charger using PPS (Programmable Power Supply) to adjust voltage and current in real time. Anker adds that a charger without PPS tops out at 25W. This guide traces why PPS is needed from how voltage is delivered, then works out what to check on the charger and cable.
The short answer: three questions the mechanism settles
| Question | What the mechanism says | So when you choose |
|---|---|---|
| Why isn’t my 45W or 65W charger super fast? | Super fast charging assumes PPS. Without PPS it’s 25W max (Anker) | Check for “PPS” before wattage |
| What’s good about PPS? | The device can request voltage in 20mV steps and change voltage and current as it charges, so the phone drops less voltage internally and makes less heat | Think of it as a way to sustain high power without heat throttling |
| Are all PPS chargers the same? | Even at 45W, the PPS voltage and current ranges differ by product, so real output depends on the phone | Pick one whose maker names your model and its output, and use a 5A cable |
How it works 1: standard USB PD delivers in steps; the phone steps down inside
A USB-C charger negotiates “how many volts and amps” with the device the moment you plug in (why chargers change their voltage). With standard USB PD, the charger offers fixed steps: 5V, 9V, 15V, 20V. The battery’s needs don’t match those steps, so circuits inside the phone step the voltage down—and that difference becomes heat.
Decision: wattage is the ceiling on “how much”; how efficiently it’s delivered depends on how the voltage is matched. That’s why wattage alone isn’t enough.
How it works 2: with PPS, the phone gives fine-grained instructions
PPS was added in USB PD 3.0. The device can request voltage in 20mV steps and set a current limit. Samsung explains that PPS adjusts voltage and current in real time according to the device’s charging state. Belkin adds that charger and device exchange information about every 10 seconds to tune output, cutting conversion loss and heat.
Galaxy’s Super Fast Charging 2.0 pairs these fine instructions with Direct Charging to take in high power. Samsung notes that devices without USB PD 3.0 or Direct Charging charge more slowly.
Decision: for super fast charging on a Galaxy, a “PPS” charger is a must. A non-PPS USB PD charger still works, but per Anker it tops out at 25W.
How it works 3: same 45W, different PPS ranges
PPS chargers list the voltage and current range they can deliver over PPS. Lined up from makers’ official pages, chargers all rated 45W differ inside:
| Charger (all 45W) | PPS range (official) | What the maker states |
|---|---|---|
| Samsung 45W Power Adapter (EP-T4511, genuine) | 5.0–20.0V, 2.25A | Lists SFC 2.0 models (S22+/Ultra through S24+/Ultra, etc.); recommends the genuine 5A cable (discontinued in Japan) |
| Anker 313 Charger (Ace, 45W) | 3.3–11V 5A / 3.3–16V 3A / 3.3–21V 2.25A | For SFC 2.0 on S23+/Ultra, use a 5A (100W) eMarker USB-C cable |
| Anker Charger (45W) | 3.3–21V, 2.25A | For SFC 2.0 on S24+/Ultra, use the included eMarker cable |
| Anker Nano Charger (45W) | 5–11V, 5A | On S25 Ultra / S25+, actual output is about 30W |
As the last row shows, a 45W PPS charger may not deliver 45W on every model. Rated speed appears only when the voltage and current the phone asks for line up with the range the charger can supply over PPS.
Decision: don’t stop at “PPS, 45W”—check that the maker names your model and its output. If unsure, pick a product that lists model compatibility.
How it works 4: the cable must be 5A
45W- and 60W-class super fast charging uses high current, so you need a 5A (eMarker) USB-C cable. Samsung recommends its genuine 5A cable, and Anker notes eMarker cables for certain models. With an ordinary 3A cable, speed may not appear even on a PPS charger (100W USB-C cables).
Decision table: what happens with the charger you have?
| Your charger | Charges? | Super fast (above 25W) |
|---|---|---|
| Non-PPS USB PD charger (any wattage) | Yes | No (25W max, Anker) |
| PPS 45W + 3A cable | Yes | May not (cable is a condition) |
| PPS 45W + 5A (eMarker) cable | Yes | Likely if your model is named (some combos land around 30W) |
| Galaxy S26 Ultra (60W) | — | Per Anker’s guide, 60W needs a 5A cable |
Per Anker’s guide, the Galaxy S26 series tops out at 25W (S26), 45W (S26+), and 60W (S26 Ultra) wired. Check your model’s maximum before buying.
How it differs from iPhone 18 Pro’s AVS
Besides PPS, there’s another fine-voltage method: AVS (USB PD 3.1 and later). iPhone 18 Pro’s “up to 50% in about 15 minutes” requires AVS, and PPS and AVS are separate methods in the standard (why iPhone 18 Pro needs AVS). To charge an iPhone and a Galaxy from one charger, check that it supports both PPS and AVS (one charger for iPhone and Android?).
Examples
Wide PPS ranges with detailed model notes: three PPS ranges including 3.3–11V at 5A. Pair with a 5A (eMarker) cable for Galaxy SFC 2.0.
Anker 313 Charger (Ace, 45W, PPS)
Comes with an eMarker cable: SFC 2.0 on Galaxy S24+/Ultra with the included cable (Anker official).
Anker Charger (45W, PPS, with USB-C to USB-C cable) View on Amazon
A 5A cable: rated 240W (5A, eMarker), so it meets the super fast charging condition.
Anker USB-C to USB-C Cable (240W, braided nylon, 0.9m)
FAQ
Q. My phone doesn’t show “Super fast charging” A. Check that the charger supports PPS, the cable is 5A, and super fast charging is turned on in the Galaxy’s battery settings. When hot, the Galaxy may also hold charging back.
Q. Can I charge a Galaxy with an iPhone charger? A. Yes. But without PPS, it won’t super fast charge—25W max (Anker).
Q. What about charging an iPhone on a PPS charger? A. It charges fine; iPhone uses USB PD. iPhone 18 Pro’s fastest condition is AVS, so check that separately.
Sources (primary)
- Samsung: “45W Power Adapter (EP-T4511)” (Japanese; SFC 2.0 needs a USB PD 3.0 and Direct Charging device; PPS adjusts voltage and current in real time; PPS 5.0–20.0V 2.25A; genuine 5A cable recommended; compatible models)
- Belkin Support: “What is Programmable Power Supply (PPS) fast charging?” (Japanese; added in USB PD 3.0; adjusts about every 10 seconds; lower conversion loss and heat)
- Anker: “Anker 313 Charger (Ace, 45W)”, “Anker Charger (45W)”, “Anker Nano Charger (45W)” (Japanese; PPS ranges and Galaxy notes)
- Anker Magazine: “Chargers for Galaxy S26” (Japanese; S26 25W / S26+ 45W / S26 Ultra 60W; non-PPS 25W max; 60W needs a 5A cable)
Summary
- Galaxy super fast charging assumes PPS. Without it, 25W max (Anker).
- PPS lets the phone specify voltage in fine steps, so it drops less voltage inside and makes less heat.
- Check in order: “PPS” → your model and output named by the maker → a 5A cable. Even at 45W, some combos land around 30W.
Related: chargers for Galaxy super fast charging compared / power banks for Galaxy super fast charging / why iPhone 18 Pro needs AVS / why chargers change their voltage / 45W chargers compared / 100W USB-C cables
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