Overview
The TEA1833TS/1X is a low-cost Switched Mode Power Supply (SMPS) controller IC from NXP USA Inc., designed for flyback topologies. It is part of the GreenChip series, known for its efficiency and cost-effectiveness. This IC 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
| Specification | Value |
|---|---|
| Package Type | TSOP6 (plastic surface-mounted package; 6 leads, SOT457) |
| Supply Voltage (VCC) | Up to 36 V |
| Maximum Duty Cycle | 90 % |
| Drive Capability | 300 mA source, 750 mA sink |
| Peak Power Operation | Up to 200 % for a limited time |
| Protection Features | Mains undervoltage protection, output overvoltage protection (OVP), overtemperature protection (OTP), output short-circuit protection (OSCP) |
| Switching Frequency | Reduced at low-power levels to limit switching losses |
Key Features
- Peak current and frequency control mode operation
- Frequency jitter to reduce EMI
- Slope compensation for CCM operation
- Integrated soft start
- Overpower protection (OPP) up to 200 % for a limited time
- Mains undervoltage protection (brownin/brownout)
- Output overvoltage protection (OVP) and overtemperature protection (OTP)
- Output short-circuit protection (OSCP) to avoid transformer saturation
- Internal and external overtemperature protection
Applications
The TEA1833TS/1X is particularly suited for medium power applications that require an efficient and cost-effective power supply solution. It is ideal for various applications needing reliable and efficient SMPS controllers.
Q & A
- What is the primary application of the TEA1833TS/1X IC?
The TEA1833TS/1X is primarily used in flyback topologies for switched-mode power supply (SMPS) applications. - What are the key protection features of the TEA1833TS/1X?
The IC features mains undervoltage protection, output overvoltage protection (OVP), overtemperature protection (OTP), and output short-circuit protection (OSCP). - How does the TEA1833TS/1X reduce electromagnetic interference (EMI)?
The IC reduces EMI through frequency jitter. - What is the maximum duty cycle of the TEA1833TS/1X?
The maximum duty cycle is set at 90 %. - What is the drive capability of the TEA1833TS/1X?
The drive capability is 300 mA source and 750 mA sink. - Does the TEA1833TS/1X support overpower protection?
Yes, it supports overpower protection up to 200 % for a limited time. - How does the TEA1833TS/1X manage switching losses at low power levels?
The switching frequency is reduced at low power levels to limit switching losses. - What type of package does the TEA1833TS/1X come in?
The IC comes in a TSOP6 package (plastic surface-mounted package; 6 leads, SOT457). - Is the TEA1833TS/1X still in production?
No, the TEA1833TS/1X is listed as obsolete. - What is the purpose of slope compensation in the TEA1833TS/1X?
Slope compensation is integrated for continuous conduction mode (CCM) operation.
