Overview
The TEA1833TS/1H is a low-cost Switched Mode Power Supply (SMPS) controller IC designed by NXP USA Inc. for flyback topologies. This GreenChip SMPS control IC is optimized for medium power applications, offering high efficiency and reliability with a minimal number of external components. It operates in peak current and frequency control mode, incorporating features such as frequency jitter to reduce Electromagnetic Interference (EMI) and slope compensation for Continuous Conduction Mode (CCM) operation.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TSOP6 (plastic surface-mounted package; 6 leads, SOT457) |
| Operating Mode | Peak current and frequency control mode |
| Frequency Jitter | Implemented to reduce EMI |
| Slope Compensation | Integrated for CCM operation |
| OverPower Protection (OPP) | Accepts overpower situation up to 200% for a limited time |
| Mains Undervoltage Protection | Brownin/brownout protection |
| Output OverVoltage Protection (OVP) | Can be implemented using minimal external components |
| Overtemperature Protection (OTP) | Internal and external OTP available |
| Drive Capability | 300 mA source, 750 mA sink |
| Maximum Duty Cycle | Set at 90% |
| Switching Frequency | Reduced at low-power levels to limit switching losses |
| Primary Peak Current at Low Power | Set to 22% of the maximum peak current |
Key Features
- Low-cost design suitable for medium power applications
- Peak current and frequency control mode operation
- Frequency jitter to reduce EMI
- Slope compensation for CCM operation
- OverPower Protection (OPP) up to 200% for a limited time
- Mains undervoltage protection (brownin/brownout)
- Output OverVoltage Protection (OVP) and Overtemperature Protection (OTP) with minimal external components
- Integrated soft start
- Drive capability of 300 mA source and 750 mA sink
- Maximum duty cycle set at 90%
- Reduced switching frequency at low-power levels to limit switching losses
Applications
The TEA1833TS/1H is especially suited for medium power applications that require efficient and cost-effective power supply solutions. These include but are not limited to:
- Consumer electronics
- Industrial power supplies
- Medical devices
- Automotive systems
- Telecommunication equipment
Q & A
- What is the primary application of the TEA1833TS/1H IC?
The TEA1833TS/1H is primarily used in flyback topologies for medium power applications. - What protection features does the TEA1833TS/1H offer?
The IC features OverPower Protection (OPP), mains undervoltage protection (brownin/brownout), output OverVoltage Protection (OVP), and Overtemperature Protection (OTP). - How does the TEA1833TS/1H reduce EMI?
The IC reduces EMI through the implementation of frequency jitter. - What is the maximum duty cycle of the TEA1833TS/1H?
The maximum duty cycle is set at 90%. - How does the TEA1833TS/1H manage switching losses at low power levels?
The switching frequency is reduced at low-power levels to limit switching losses. - What is the primary peak current at low power levels?
The primary peak current is set to 22% of the maximum peak current at low power levels. - What is the drive capability of the TEA1833TS/1H?
The drive capability is 300 mA source and 750 mA sink. - Is the TEA1833TS/1H compliant with environmental regulations?
Yes, it is PbFree, EU RoHS compliant, and halogen-free. - What package type is the TEA1833TS/1H available in?
The IC is available in a TSOP6 package (plastic surface-mounted package; 6 leads, SOT457). - How does the TEA1833TS/1H handle overpower situations?
The IC accepts overpower situations up to 200% for a limited time.
