SSL4120 datasheet(4/48 Pages) NXP

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SSL4120

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Product data sheet

Rev. 2 — 1 November 2012

4 of 48

NXP Semiconductors

SSL4120

Resonant power supply controller IC with PFC for LED lighting

Pinning information

6.1 Pinning

6.2 Pin description

Fig 2.

SSL4120T pin configuration

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Table 2.

Pin description

Symbol

Description

COMPPFC

PFC controller frequency compensation.

Externally connected to filter

SNSMAINS

mains voltage sense input.

Externally connected to resistive divided mains voltage

SNSAUXPFC

PFC demagnetization timing sense input.

Externally connected to the PFC auxiliary winding

SNSCURPFC

PFC controller sense input for momentary current and soft-start.

Externally connected to current sense resistor and soft-start filter

SNSOUT

• HBC output voltage sense input

• HBC controller or PFC and HBC controllers sense input for burst

mode

Externally connected to the HBC transformer auxiliary winding

SUPIC

SUPIC input low-voltage supply and output of internal HV start-up source.

Externally connected to HBC transformer auxiliary winding or to the

external DC supply

GATEPFC

PFC MOSFET gate driver output

PGND

power ground. HBC low-side and PFC driver reference (ground)

SUPREG

regulated SUPREG IC supply; internal regulator output; input drivers.

Externally connected to SUPREG buffer capacitor

GATELS

HBC low-side MOSFET gate driver output

n.c.

not connected; high-voltage spacer.

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