CS1500_1 Datasheet, PDF (2/22 Pages) Cirrus Logic – Digital Power Factor Correction IC

Jul ?$shortyear>
CONFIDENTIAL
CS1500
Pin Name
NC
STBY
Pin #
1, 8
2
IAC
3
FB
4
GND
5
GD
6
VDD
7
I/O
-
IN
IN
IN
-
OUT
IN
Table 1. Pin Descriptions
Description
NC — No connections
Remote On/Off Control — A voltage below 0.8 V shuts down the IC (not latched) and
brings the device into low power consumption mode. The input has an internal 600 kΩ
pull-up resistor to the VDD pin and should be driven with an open-collector device.
Rectifier Voltage Sense — A current proportional to the rectified line voltage (V_rect) is
fed into this pin. The current is measured with an A/D converter.
Link Voltage Sense — A current proportional to the output link voltage (V_link) of the
PFC is fed into this pin. The current is measured with an A/D converter.
Ground — Current return for both the input signal portion of the IC and the gate driver.
Gate Driver Output — The totem pole stage is able to drive the power MOSFET with a
peak current of 0.5 A source and 1.0 A sink. The high-level voltage of this pin is
clamped at V_Z to avoid excessive gate voltages.
IC Supply Voltage — Supply voltage of both the input signal portion of the IC and the
gate driver.
2
DS849A7