Diodes' AP3127/H current-mode PWM controllers are optimized for high-performance and cost-effective quick charge application systems and are available in the SOT26 package.
AP3127/H has three modes of operation to minimize power losses at all loads:
- Fixed 65 kHz/100 kHz PWM: switching frequency under full load
- Green mode: at lighter loads, AP3127/H automatically switches to PFM with switching frequency fold-back, improving system efficiency. A 20 kHz minimum switching frequency avoids audible noise
- Burst mode: under light- or no-load to minimize standby power. Frequency dithering is built in to reduce EMI emissions
AP3127/H include comprehensive protection features such as cycle-by-cycle current limit (OCP), VCC overvoltage protection (VOVP), internal OTP, and overload protection (OLP). AP3127/H have additional output over voltage (SOVP) and output under-voltage protection (SUVP) which provide protection when the charger’s output cable is shorted. AP3127/H, coupled with a CC/CV controller and a protocol decoder, provide cost-effective quick charge systems.
| Features |
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- Fixed-frequency PWM mode, green mode, and burst mode
- Improves efficiency across all load levels
- Frequency dithering in fixed-frequency PWM and green modes
- Internal slope and line compensation
- Simplifies the feedback loop design making a more robust design
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- Over-current protection, VCC overvoltage protection, internal OTP, overload protection
- Increases system reliability and robustness
- Output under-voltage protection (SUVP)
- Provides protection when the charger’s output cable is shorted
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| Applications |
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- Quick charger for intelligent smartphones
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