IVCC1104 Datasheet | IVCT

Jan 2024 IVCC1104 CCM Totem-Pole PFC Controllers 1 Features - SOIC-16 and QFN 4x4 20L packages - 5V VCC with UVLO - 2 line-frequency switch and 2 high-frequency PWM gate drive signals - Optimized AC current zero-crossing control - Average current mode control with fixed ratio input voltage feedforward - Auto reverse current prevention at AC drop - Optimized step load response with non-linear voltage loop and accelerated current loop - Low THD with Vo harmonic rejection sensing - Up to 150k Hz programmable PWM frequency - Overvoltage Protection, Open-Loop Protection, - AC Overvoltage Protection and UVLO - Peak Current Limiting - Burst mode options - Burst starts at Vac zero-crossing to minimize audible noise - Suitable for both AC and DC inputs - Suitable for hall and resistor current sensing - Suitable for over 400Hz PFC control - Relay signal, synchronized with Vac, ease timing control to reduce inrush current 2 Applications - Server Power supplies - pact PFC power modules - TV and gaming Xbox power supplies - High power phone and laptop chargers - Avionics power supplies 3 Description The IVCC1104 is a high-speed, precise and pact totem-pole PFC analog controller. IVCC1104 employs the advanced average current mode and fixed-ratio input voltage feedforward control. The control generates a duty cycle baseline D’ = Vin/400V, while the current loop just provides small duty cycle adjustment. It essentially speeds up the current loop and results in excellent current mand tracking. For the same reason, when AC drops abruptly, the PWM duty cycle can be adjusted without delay, which prevents the boost inductor current from reversing. The IVCC1104 controller can be used for high AC frequency avionics power factor correction, which usually operates at 400Hz. For the voltage loop, output Vo is sampled and held at Vac zero-crossing. By doing so, the Vo’s second harmonic is rejected and Vo average voltage is precisely sensed. A non-linear control is added to...