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L6562ATDTR 数据表(PDF) 4 Page - STMicroelectronics |
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L6562ATDTR 数据表(HTML) 4 Page - STMicroelectronics |
4 / 25 page Pin settings L6562AT 4/25 2 Pin settings 2.1 Pin connection Figure 2. Pin connection (top view) 2.2 Pin description ZCD INV COMP MULT CS Vcc GD GND 1 2 3 4 8 7 6 5 Table 2. Pin description Pin N° Name Description 1INV Inverting input of the error amplifier. The information on the output voltage of the PFC pre-regulator is fed into this pin through a resistor divider. The pin doubles as an ON/OFF control input. 2COMP Output of the error amplifier. A compensation network is placed between this pin and INV to achieve stability of the voltage control loop and ensure high power factor and low THD. 3MULT Main input to the multiplier. This pin is connected to the rectified mains voltage via a resistor divider and provides the sinusoidal reference to the current loop. 4CS Input to the PWM comparator. The current flowing in the MOSFET is sensed through a resistor, the resulting voltage is applied to this pin and compared with an internal sinusoidal-shaped reference, generated by the multiplier, to determine MOSFET’s turn-off. The pin is equipped with 200 ns leading-edge blanking for improved noise immunity. 5ZCD Boost inductor’s demagnetization sensing input for transition-mode operation. A negative-going edge triggers MOSFET’s turn-on. 6 GND Ground. Current return for both the signal part of the IC and the gate driver. 7GD Gate driver output. The totem pole output stage is able to drive power MOSFET’s and IGBT’s with a peak current of 600 mA source and 800 mA sink. The high-level voltage of this pin is clamped at about 12 V to avoid excessive gate voltages in case the pin is supplied with a high Vcc. 8Vcc Supply voltage of both the signal part of the IC and the gate driver. The supply voltage upper limit is extended to 22 V min. to provide more headroom for supply voltage changes. |
类似零件编号 - L6562ATDTR |
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类似说明 - L6562ATDTR |
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