TEA1832LTS: GreenChip SMPS control IC ARCHIVED

Overview

The TEA1832LTS is a low-cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. The TEA1832LTS 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 TEA1832LTS IC features OverPower Protection (OPP). The controller accepts an overpower situation up to 200 % for a limited amount of time.

Mains undervoltage protection (brownin/brownout), output OverVoltage Protection (OVP), and OverTemperature Protection (OTP) can be implemented using a minimal number of external components.

At low-power levels, the primary peak current is set to 22 % of the maximum peak current. The switching frequency is reduced to limit the switching losses. The combination of fixed frequency operation at high output power and frequency reduction at low output power provides high efficiency over the total load range.

The TEA1832LTS makes the design of low-cost, highly efficient and reliable supplies easier by requiring a minimum number of external components. The device is especially suited for medium power applications.

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Features

SMPS controller IC enabling low-cost applications
Large input voltage range (10.5 V to 36 V)
Integrated OverVoltage Protection (OVP) on the VCC pin
Accurate OverVoltage Protection (OVP) via the ISENSE pin
Dedicated burst mode, allowing a low VCC capacitor value
Very low supply current during start-up and restart (11 μA typical)
Low supply current during normal operation (0.58 mA typical without load)
Internal overpower time-out
Overpower protection including high/low line compensation
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels
Peak power operation up to 200 % by frequency increase and peak current increase
Slope compensation for CCM operation
Integrated soft-start
Drive capability 300 mA source, 750 mA sink
Maximum duty cycle set at 90 %
Mains undervoltage protection (brownin/brownout)
Output Short Circuit Protection (OSCP), avoiding transformer saturation
External OverTemperature Protection (OTP)
IC overtemperature protection
Maximum duty cycle protection and brownin/brownout protection cause a restart, all other protections are latched

Target Applications

All applications that require an efficient and cost-effective power supply solution. The TEA1832LTS is especially suited for medium power applications.

MoreLess

Features

SMPS controller IC enabling low-cost applications
Large input voltage range (10.5 V to 36 V)
Integrated OverVoltage Protection (OVP) on the VCC pin
Accurate OverVoltage Protection (OVP) via the ISENSE pin
Dedicated burst mode, allowing a low VCC capacitor value
Very low supply current during start-up and restart (11 μA typical)
Low supply current during normal operation (0.58 mA typical without load)
Internal overpower time-out
Overpower protection including high/low line compensation
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels
Peak power operation up to 200 % by frequency increase and peak current increase
Slope compensation for CCM operation
Integrated soft-start
Drive capability 300 mA source, 750 mA sink
Maximum duty cycle set at 90 %
Mains undervoltage protection (brownin/brownout)
Output Short Circuit Protection (OSCP), avoiding transformer saturation
External OverTemperature Protection (OTP)
IC overtemperature protection
Maximum duty cycle protection and brownin/brownout protection cause a restart, all other protections are latched

Target Applications

All applications that require an efficient and cost-effective power supply solution. The TEA1832LTS is especially suited for medium power applications.

Data Sheets

Application Notes

TEA1832TS Block Diagram

SOT457

TEA1832TS Block Diagram
SOT457

TEA1832TS Block Diagram

SOT457

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