SSL4120 datasheet(5/48 Pages) NXP

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SSL4120

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Product data sheet

Rev. 2 — 1 November 2012

5 of 48

NXP Semiconductors

SSL4120

Resonant power supply controller IC with PFC for LED lighting

SUPHV

internal HV start-up source high-voltage supply input.

Externally connected to the boost voltage

GATEHS

HBC high-side MOSFET gate driver output

SUPHS

high-side driver supply input.

Externally connected to the bootstrap capacitor

reference for high-side driver and input for half-bridge slope detection.

Externally connected to half-bridge node HB between HBC MOSFETs (see

Figure 19)

n.c.

not connected; high-voltage spacer

SNSCURHBC 17

momentary HBC current sense input.

Externally connected to the resonant current sense resistor

SGND

signal ground and IC reference (ground).

CFMIN

HBC minimum frequency setting.

Externally connected to the capacitor

RFMAX

HBC maximum frequency setting.

Externally connected to the resistor

SNSFB

output voltage regulation feedback sense input.

Externally connected to opto-coupler

SSHBC/EN

• HBC soft-start timing input

• IC enable input. Enables PFC only or both PFC and HBC controllers.

Externally connected to soft-start capacitor and enable pull-down signal

RCPROT

protection timer setting for time-out and restart.

Externally connected to resistor and capacitor

SNSBOOST

sense input for boost voltage regulation.

Externally connected to resistive divided Vboost

Table 2.

Pin description …continued

Symbol

Description

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