ICC80QSG
Single-stage flyback controller IC for battery charging
The ICC80QSG is a PWM controller for flyback topologies operating in quasi-resonant mode and valley switching DCM, to achieve high efficiency of power transfer across wide operating range. For battery charging applications, the IC offers a wide power range as well as a comprehensive set of protections. The IC is easy to design in and requires a minimum number of external components. The gate driver current enables reasonable designs up to 130W with state-of-the-art MOSFETs. The system performance and efficiency can be optimized using Infineon CoolMOS™ P7 power MOSFETs.
The integrated burst mode function allows designs with a very low standby power consumption during standby mode and very light loads.
Summary of Features
- Secondary-side regulation (SSR)
- Quasi-resonant mode (QRM) operation with continuous conduction mode (CCM)-prevention and valley switching discontinuous conduction mode (DCM) in mid to light load
- Burst mode for very light loads
- Reduced gate driver output voltage during burst mode
- Adjustable on-time mapping at valley changing position
- Adjustable maximum on-time
- Comprehensive set of protections
- Externally configurable hysteresis of brown-in and brown-out
- Adaptive brown-out level triggering based on bus voltage ripple
- Soft start
Benefits
- Ideal for battery charging current control
- High efficiency and low electromagnetic interference (EMI)
- Low system standby power consumption
- Design flexibility with adjustable max operation switching frequency and configurability of brown-in and brown-out
- Protects primary components from overheating and saturation with higher brown-out level at higher input/output power
- Safe, robust and reliable operation
Potential Applications
Tailored for battery charger application up to 130W
Also suited for adapter, printer, PC, TV, monitor, set-top box, audio amplifier applications up to 130W
