Fairchild Manuals

The FAN7602B is a green current-mode PWM controller designed by Fairchild Semiconductor Corporation for offline adapter applications, DVDP, VCR, LCD monitor applications, and auxiliary power supplies. It features an internal high-voltage start-up switch and burst-mode operation that reduce power loss in standby mode. As a result, it is possible to supply 0.5W load, limiting the input power under 1W when the input line voltage is 265VAC. On no-load condition, input power is under 0.3W. The maximum power can be limited constantly, regardless of the line voltage change, using the power limit function. The switching frequency is internally fixed at 65kHz. The FAN7602B includes various protections for the system reliability and the internal soft-start prevents the output voltage over-shoot at start-up.

FAN7601B is a programmable frequency green current mode PWM controller. It is specially designed for offline adapter applications and auxiliary power supplies. It features green current mode PWM control, low operating current, burst mode operation, internal high-voltage startup switch, under-voltage lockout, protection, and soft-start function.

The FAN7601 is a green programmable frequency current mode PWM controller specially designed for the off-line adapter application and the auxiliary power supplies which require high efficiency at a light load and no load. The internal high voltage start-up switch and the burst mode reduce the power loss. The FAN7601 includes some protections such as latch protection and over voltage protection. The latch protection can be used for over voltage protection and/or thermal protection and so on. And the soft start prevents the output voltage over shoot at start up.

The FAN6863W is a highly integrated PWM controller that provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary Green Mode provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load conditions, the power supply enters a deep standby mode, turning off all switch devices, consuming extremely low standby power.

The FAN6863 is a highly integrated green-mode PWM controller with features including low standby power, low startup current, low operating current, peak-current mode operation, continuously decreasing PWM frequency with load, burst mode at light loads, VDD over-voltage protection, constant output power limit, internal latch circuit for over-voltage protection and over-temperature protection, SENSE pin short-circuit protection, fixed PWM frequency, feedback open-loop protection, maximum voltage clamp for GATE output, soft-start time, soft driving for EMI improvement, full range frequency hopping, internal OTP sensor with hysteresis, and 400mA GATE driving capability.

FAN6862R/L is a highly integrated green-mode PWM controller from Fairchild Semiconductor Corporation. This product features low startup current, low operating current, peak current mode operation, cycle-by-cycle current limiting, PWM frequency continuously decreasing under light loads, burst mode, VDD over-voltage protection, constant output power limit, over-temperature protection, fixed PWM frequency (65KHz), frequency hopping, feedback open-loop protection, 56ms delay, soft-start time 5ms, 400mA driving capability. Suitable for various general-purpose switch-mode power supplies and flyback power converters, such as power adapters, open-frame SMPS, SMPS with surge-current output (such as printers, scanners and motor drivers).

FAN6862 is a highly integrated green-mode PWM controller that offers the following features: low startup current (8µA), low green mode operating current (3mA), peak current mode operation, cycle-by-cycle current limiting, PWM frequency continuously decreasing with light loads, burst mode, VDD over-voltage protection (OVP), constant output power limit (full AC input range), internal latch circuit for OVP, OTP, fixed PWM frequency (65KHz) with frequency hopping, feedback open-loop protection (56ms delay), soft start time: 4ms, 400mA driving capability.

FAN6756 is a next-generation Green Mode PWM controller with innovative mWSaver™ technology, which dramatically reduces standby and no-load power consumption, enabling conformance to worldwide Standby Mode efficiency requirements.

FAN6755W / FAN6755UW is a mWSaver™ PWM controller with industry-leading standby power, adaptive PWM frequency adjustment, reduced EMI, etc.

The FAN6754WA is a highly integrated green-mode PWM controller with features such as high-voltage startup, AC input brownout protection, monitoring HV to adjust VLimit, and more.

The FAN6754B is a highly integrated green-mode PWM controller that provides multiple features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load and very light-load conditions, FAN6754B saves PWM pulses by entering deep burst mode. This burst mode function enables the power supply to maintain a relatively low switching frequency under light-load conditions, thereby reducing power consumption.

The FAN6754A is a highly integrated green-mode PWM controller that provides low standby power consumption and excellent performance for switch-mode power supplies and flyback power converters. It features a proprietary green-mode function that provides off-time modulation to continuously decrease the switching frequency under light-load conditions to minimize standby power consumption. Under zero-load and very light-load conditions, the FAN6754A saves PWM pulses by entering deep burst mode. This burst mode linearly hops between 22 kHz and 65 kHz to reduce EMI emissions.

The FAN6751MR is a highly-integrated green-mode PWM controller with features such as high-voltage startup, low operating current, linearly decreasing PWM frequency, fixed PWM frequency, peak-current-mode control, etc.

The FAN6749 is a highly integrated ultra green-mode PWM controller. It features high voltage startup, low operating current, linearly reducing PWM frequency to 24kHz, proprietary frequency hopping to reduce EMI, two-level over-current protection (OCP), 1400ms delay for normal peak load, two-level OCP, 56ms delay for super peak load, output short-circuit protection (SCP), peak-current mode operation with cycle-by-cycle current limiting, HV pin brown-in/out protection with hysteresis, constant power limit by HV sampling, internal FB open-loop protection (OLP), GATE output maximum voltage clamp: 14.5V, VDD over-voltage protection (OVP), programmable over-temperature protection (OTP), integrated 6ms soft-start function, internal latch circuit (OVP, OTP, OCP, OLP, SCP), internal OTP sensor with hysteresis. It is suitable for general-purpose switched-mode power supplies and flyback power converters, including: power adapters, open-frame SMPS; specifically for SMPS with surge-current output, such as for printer, scanner, motor drivers.