CS1501-FSZ Cirrus Logic Inc, CS1501-FSZ Datasheet - Page 3

• Manufacturer Part Number: CS1501-FSZ
• Description: IC PFC CONTROLLER DCM OCP
• Manufacturer: Cirrus Logic Inc

Specifications of CS1501-FSZ

• Uvlo: 2.1V
• Supply Voltage Range: 8V To 17V
• Startup Current: 68µA
• Operating Supply Current: 1.5mA
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage Max: 17V
• Package / Case: 8-SOIC

2. PIN DESCRIPTION
DS927PP6
Pin Name
STBY
GND
ZCD
V
IFB
IAC
GD
CS
DD
Rec tifier V oltage S ens e
Pin #
1
2
3
4
5
6
7
8
Link V oltage S ens e
P FC Current S ens e
PWR
PWR
OUT
I/O
IN
IN
IN
IN
IN
S tandby
Link Voltage Sense — A current proportional to the output link voltage of the PFC is
input into this pin. The current is measured with an ADC.
Standby — A voltage below 0.8V puts the IC into a non-operating, low-power state.
The input has an internal 600k pull-up resistor to the V
Rectifier Voltage Sense — A current proportional to the rectified line voltage is input
into this pin. The current is measured with an ADC.
PFC Current Sense — The current flowing in the PFC MOSFET is sensed through a
resistor. The resulting voltage is applied to this pin and digitized for use by the PFC
computational logic to limit the maximum current through the power FET.
Zero-current Detect — Boost Inductor demagnetization sensing input for zero-current
detection (ZCD) information. The pin is externally connected to the PFC boost inductor
auxiliary winding through an external resistor divider.
Ground — Common reference. Current return for both the input signal portion of the IC
and the gate driver.
PFC Gate Driver — The totem pole stage is able to drive the power MOSFET with a
peak current of 0.5A source and 1.0A sink.
IC Supply Voltage — Supply voltage of both the input signal portion of the IC and the
gate driver. A storage capacitor is connected on this pin to serve as a reservoir for oper-
ating current for the device, including the gate drive current to the power transistor. This
pin is clamped to a maximum voltage (V
Figure 2. CS1501 Pin Assignments
S TBY
IAC
IFB
CS
8-lead S OIC
1
2
3
4
8
7
6
5
V DD
GD
GND
ZCD
Description
z
) by an internal zener function.
IC S upply V oltage
P FC Gate Driv er
Ground
P FC Zero-c urrent Detec t
DD
pin.
CS1501
3