CS1500-FSZ datasheet(20/22 Pages) CIRRUS

20 / 22 page

CS1500

DS849A7

Jul ?$shortyear>

CONFIDENTIAL

6. DEFINITIONS

Variable

Definition

The efficiency factor.

A margin factor to guarantee rated power against tolerances and transients.

fline(min)

The minimum AC line frequency.

IAC

The current generated by Vrect that flows into the IAC pin.

IFB

The current generated by Vlink that flows into the FB pin.

IFET(pk)

The PFC MOSFET peak current, which is equal to the peak current in the PFC boost inductor.

Irms

The magnitude of the RMS current.

Isat

The boost inductor LB saturation current.

Ist

The sum of the current into the IAC and FB pins.

IST

The startup current of the chip.

The PFC boost inductor.

The nominal output power from the CS1500 PFC circuit.

Po(max)

The maximum value of the output power from the CS1500 PFC circuit.

RAC

The sense resistor used to measure current into the IAC pin.

RFB

The sense resistor used to measure current into the FB pin.

Vin(min)

The minimum specified line voltage for proper operation (volts RMS).

Vlink

The magnitude of the output voltage from the PFC.

Vlink(min)

The magnitude of the output voltage from the PFC.

ΔVlink(rip)

ΔVlink(rip), is the output voltage ripple requirement in volts peak-to-peak

Vrect

The instantaneous value of the rectified line voltage (volts).

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