поискавой системы для электроныых деталей |
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L6585D датащи(PDF) 6 Page - STMicroelectronics |
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L6585D датащи(HTML) 6 Page - STMicroelectronics |
6 / 25 page Pin settings L6585D 6/25 Pin num. Name Function 9COMP Output of the error amplifier. A compensation network is placed between this pin and INV to achieve stability of the PFC voltage control loop and ensure high power factor and low THD. 10 INV Inverting input of the error amplifier. The information on the output voltage of the PFC pre-regulator is fed into the pin through a resistor divider. Input for the feedback disconnection comparator 11 ZCD Boost inductor’s demagnetization sensing input for PFC transition-mode operation. A negative-going edge triggers PFC MOSFET turn-on. During start-up or when the voltage is not high enough to arm the internal comparator (e.g. AC Mains peak), the PFC driver is triggered by means of an internal starter. 12 PFCS Input to the PFC PWM comparator. The current flowing in the PFC mosfet is sensed by a resistor; the resulting voltage is applied to this pin and compared with an internal sinusoidal-shaped reference, generated by the multiplier, to determine the PFC MOSFET’ s turn-off. A second comparison level detects abnormal currents (e.g. due to boost inductor saturation) and, on this occurrence, shuts down and latches the IC reducing its consumption to the start-up. An internal LEB prevents undesired function triggering. 13 PFG PFC gate driver output. The totem pole output stage is able to drive power MOSFET’S with a peak current of 300mA source and 600mA sink. 14 HBCS 2-levels half-bridge current monitor for current control. The current flowing in the HB mosfet is sensed by a resistor; the resulting voltage is applied to this pin. Low threshold (active during run mode): in case of thresholds crossing, the IC reacts with self-adjusting frequency increase in order to limit the half-bridge (lamp) current. High threshold: – ignition: in case of thresholds crossing during the frequency shift, the IC reacts with self-adjusting frequency increase in order to limit the lamp voltage and preventing operation below resonance. – run mode: in case of thresholds crossing because of current spikes (due e. g. to capacitive mode / cross-conduction), the L6585D latches to avoid MOSFETs damaging, 15 GND Ground. Current return for both the signal part of the IC and the gate driver. 16 LSD Low side driver output: the output stage can deliver 290mA source and 480mA sink (typ. values). 17 VCC Supply Voltage of both the signal part of the IC and the gate driver. Clamped with a Zener inside. 18 OUT High Side Driver Floating Reference. This pin must be connected close to the source of the high side power MOS. 19 HSD High side driver output: the output stage can deliver 290mA source and 480mA (typ. values). 20 BOOT Bootstrapped Supply Voltage. Between this pin and VCC, the bootstrap capacitor must be connected. A patented integrated circuitry replaces the external bootstrap diode, by means of a high voltage DMOS, synchronously driven with the low side power MOSFET. Table 1. Pin functions (continued) |
Аналогичный номер детали - L6585D_07 |
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Аналогичное описание - L6585D_07 |
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