SF6038X
Classification:Charger Release time:2022-12-15 14:40:38 Author: 赛威科技 Source:
SF6038X is a high precision, highly integrated DCM (Discontinuous Conduction Mode) Primary Side Regulation (PSR) power switch for offline small power converter applications. It has built-in power BJT, which can further lower system cost.

NC-Cap/super-QR/PSR-IITM CV/CC Power Switch



FEATURES

   Built-in High Voltage Power BJT

   Proprietary NC-Cap/super-QR/PSR-IITM (Quasi-Resonant & Primary Side Regulation) Control:

±4% CC and CV Precision

● Proprietary “Audio Noise Cancellation” Control

● Built-in “Fast Dynamic Response” Control to Meet USB Charge Requirements

● Proprietary “Zero-Output Startup” Control

● Proprietary “Smart Output Short Protection”

● without External Compensation/Filtering Capacitor Needed

●  Max. 50V Output for AC/DC LED Lighting

   Direct Drive of Low Cost BJT

   Proprietary Cable Drop Compensation

   Multi Mode Control

   Frequency Jitter for Better EMI

   Dynamic Base Drive for High Efficiency

   Wide VDD Operating Range

   10.8V UVLO Hysteresis Window

   Cycle-by-Cycle Current Limiting

   Leading Edge Blanking (LEB)

   Built-in Soft Start, Pin Floating Protection

   VDD UVLO, OVP, OLP, SCP

 

APPLICATIONS

   Battery chargers

   Replaces linear transformer and RCC SMPS

   Small power adapter

   AC/DC LED lighting

GENERAL DESCRIPTION

SF6038X is a high precision, highly integrated DCM (Discontinuous Conduction Mode) Primary Side Regulation (PSR) power switch for offline small power converter applications. It has built-in power BJT, which can further lower system cost. 

SF6038X has built-in proprietary NC-Cap/super-QR/PSR-IITM control for CV control, which eliminates external compensation or filtering capacitor. It has built-in cable drop compensation function, which can provide excellent CV performance. The IC uses Multi Mode Control to improve efficiency and reliability and to decrease audio noise energy @ light loadings.

SF6038X integrates proprietary “Audio Noise Cancellation” control for audio noise free operation. The IC has built-in “Fast Dynamic Response” control to meet USB Charge requirements. SF6038X also integrates proprietary “Zero-Output Startup” control to achieve startup when output is near zero voltage. The IC has proprietary “Smart Output Short Protection”, which can protect the system with large leakage inductance when output is short circuit.

SF6038X integrates functions and protections of FB Short Protection, Under Voltage Lockout (UVLO), VDD Over Voltage Protection (VDD OVP), Output Over Load Protection (OLP), Output Short Circuit Protection (SCP), Soft Start, Cycle-by-cycle Current Limiting (OCP), Pin Floating Protection, VDD Clamping.

SF6038X is available SOP8 packages.

TYPICAL APPLICATION

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