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NXP Semiconductors - GreenChip SMPS control IC

Numéro de référence TEA1732LTS
Description GreenChip SMPS control IC
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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TEA1732LTS fiche technique
TEA1732LTS
GreenChip SMPS control IC
Rev. 1 — 18 March 2014
Product data sheet
1. General description
The TEA1732LTS is a low cost Switched Mode Power Supply (SMPS) controller IC
intended for flyback topologies. The TEA1732LTS 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 TEA1732LTS IC features OverPower Protection (OPP). The controller accepts an
overpower situation for a limited amount of time.
Mains undervoltage protection (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 25 % 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 TEA1732LTS makes the design of low-cost, highly efficient and reliable supplies for
power requirements up to 75 W easier by requiring a minimum number of external
components.
2. Features and benefits
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 A 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 efficiency at
low output power levels
Frequency increase at peak power operation
Slope compensation for CCM operation
Integrated soft-start

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