The TEA1732TS is a low cost Switched Mode Power Supply (SMPS) controller IC intended forflyback topologies. The TEA1732TS operates in peak current and frequency control mode.Frequency jitter has been implemented to reduce ElectroMagnetic Interference (EMI).Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.

The TEA1732TS IC features OverPower Protection (OPP). The controller accepts an overpowersituation for a limited amount of time.

Mains undervoltage protection (brownout), output OverVoltage Protection (OVP), andOverTemperature Protection (OTP) can be implemented using a minimal number of externalcomponents.

At low-power levels, the primary peak current is set to 25 % of the maximum peak current.The switching frequency is reduced to limit the switching losses. The combination offixed frequency operation at high output power and frequency reduction at low outputpower provides high efficiency over the total load range.

The TEA1732TS makes the design of low-cost, highly efficient and reliable supplies forpower requirements up to 75 W easier by requiring a minimum number of externalcomponents.

TEA1732TS TEA1732LTS TEA1732CTS OPP Safe restart Latched to off Safe restart UVLO Safe restart Latched to off Safe restart Brownout Safe restart Safe restart Safe restart Max Duty cycle Safe restart Safe restart Safe restart OVP Latched to off Latched to off Safe restart Ext. OTP Latched to off Latched to off Safe restart Int. OTP Latched to off Latched to off Latched to off

• SMPS controller IC enabling low-cost applications
• Large input voltage range (12 V to 30 V)
• Integrated OverVoltage Protection (OVP) on the VCC pin
• Accurate OverVoltage Protection (OVP) via the ISENSE pin
• Very low supply current during start-up and restart (10 μA typical)
• Low supply current during normal operation (0.58 mA typical without load)
• Internal overpower time-out
• Overpower protection or high/low line compensation
• Fixed switching frequency with frequency jitter to reduce EMI
• Frequency reduction with fixed minimum peak current to maintain high efficiencyat low output power levels
• Frequency increase at peak power operation
• Slope compensation for CCM operation
• Integrated soft-start
• Low and adjustable OverCurrent Protection (OCP) trip level
• Mains undervoltage protection (brownout)
• External OverTemperature Protection (OTP)
• IC overtemperature protection

• All applications that require an efficient and cost-effective power supplysolution up to 75 W