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SSC3S927A

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Package : SOP18 (Pin 13 and 17 Removed)

RoHS : YES

Data Sheet(991KB)
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The SSC3S927A is a controller with SMZ* method for LLC current resonant switching power supplies, incorporating a floating drive circuit for a high-side power MOSFET. The IC includes useful functions such as the standby function, automatic dead time adjustment, and capacitive mode detection. The IC allows power supply systems to have fewer external components, compactness, high efficiency, low noise, and high cost-effectiveness.
* SMZ: soft-switched multi-resonant zero current switch, achieving soft switching operation during all switching periods.

Data Download

Design Support

  • Technical Documents

Technical Documents

Features

    • Pb-free (RoHS Compliant)
    • Standby Mode Change Function
      –Output Power at Light Load:
      PO = 150 mW (PIN = 0.27 W)
      – Burst Operation in Standby Mode
      – Soft-on/Soft-off Function: Reduces Audible Noise
    • Soft-start Function
    • Capacitive Mode Detection Function
    • Reset Detection Function
    • Automatic Dead Time Adjustment Function
    • Built-in Startup Circuit
    • X-capacitor Discharge Function
    • Protections
      –Input Voltage Protection
      Input Overvoltage Protection (HVP): Auto-restart
      Input Undervoltage Protection (UVP): Auto-restart
      – High-side Driver UVLO: Auto-restart
      – Overcurrent Protection (OCP): Auto-restart, Peak Drain Current Detection, Two Types Protection
      – Overload Protection (OLP): Auto-restart
      – Overvoltage Protection (VCC_OVP): Auto-restart
      – REG Overvoltage Protection (REG_OVP): Auto-restart
      – Thermal Shutdown (TSD): Auto-restart

Application

  • Switching power supplies for electronic devices such as:
  • Digital Appliances (e.g., Television)
  • Office Automation (OA) Equipment (e.g., Server, Multi¬Function Printer)
  • Industrial Apparatus)
  • Communication Facilities

Specifications

Control Method Current Resonant
Type Controller
Output Current
RDS(ON) (max.)
VDSS (min.)
VCC (max.) 35 V
Oscillating Frequency(typ.) 31.5 to 300 kHz
OCP YES
OLP Auto Restart / Latch
OVP Auto Restart / Latch
Brown-in / out YES
TSD Auto Restart
Power Consumption at No Load
Package Weight (Typ.) 0.27 g
Automotive Qualified NO

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

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