TEA1832LTS Datasheet PDF - NXP


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TEA1832LTS
NXP

Part Number TEA1832LTS
Description GreenChip SMPS control IC
Page 23 Pages

TEA1832LTS datasheet pdf
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TEA1832LTS
GreenChip SMPS control IC
Rev. 1 — 15 December 2014
Product data sheet
1. General description
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.
2. Features and benefits
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 A 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



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TEA1832LTS
GreenChip SMPS control IC
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
3. Applications
All applications that require an efficient and cost-effective power supply solution. The
TEA1832LTS is especially suited for medium power applications.
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
TEA1832LTS/1
TSOP6
plastic surface-mounted package; 6 leads
Version
SOT457
TEA1832LTS
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
2 of 23



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5. Block diagram
TEA1832LTS
GreenChip SMPS control IC
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Fig 1. TEA1832LTS block diagram
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TEA1832LTS
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
3 of 23



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6. Pinning information
6.1 Pinning
TEA1832LTS
GreenChip SMPS control IC
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Fig 2. TEA1832LTS pin configuration
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6.2 Pin description
Table 2. Pin description
Symbol
Pin
VCC
1
GND
2
PROTECT
3
CTRL
4
ISENSE
5
DRIVER
6
Description
supply voltage
ground
protection and mains detect input
control input
current sense and accurate OVP input
gate driver output
TEA1832LTS
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
4 of 23




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