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SSC3S932

The SSC3S932 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 product includes useful functions such as the automatic dead time adjustment and the capacitive mode detection. The product achieves high efficiency, low noise, and high cost-effective power supply systems with few external components.
*SMZ is the soft-switched multi-resonant zero current switch, and is achieved soft switching operation during all switching periods.

Features

    • Pb-free (RoHS Compliant)
    • Soft Start Function
    • Capacitive Mode Detection Function
    • Reset Detection Function
    • Automatic Dead Time Adjustment Function
    • Auto-restart:
      - High-side Driver UVLO
      - Overcurrent Protection (OCP):
       Peak drain current detection, 2-step detection
      - Input Undervoltage Protection (UVP)

      Auto-restart / Latched Shutdown selected by RT pin setting:
      - VCC Pin Output Overvoltage Protection (VCC_OVP)
      - Input Overvoltage Protection (HVP)
      - Overload Protection (OLP)
      - Optocoupler Open Protection (OOP)
      - Thermal Shutdown (TSD)

Application

    Switching power supplies for electronic devices such as:
    • Audio Visual (AV) Equipment
    • Office Automation (OA)
    • Industrial Apparatus
    • Communication Facilities

Specifications

Control Method Current Resonant
Type Controller
Output Current W
RDS(ON) (max.) Ω
VDSS (min.) V
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 / Latch
Power Consumption at No Load

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Questions or Comments?

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