Overview
The TPS3510DR, produced by Texas Instruments, is a 3-channel supervisor IC designed for switch-mode power supplies in personal computer systems. This component is packaged in an 8-pin SOIC (D) package and is characterized for operation over a temperature range of -40°C to 85°C. It is designed to minimize the number of external components required in power supply systems, providing comprehensive protection circuits, power good indicators, and fault protection outputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 4 to 15 | V |
| Voltage Thresholds | 3.3 V, 5 V, 12 V | V |
| Power Good Delay | 300 ms (TPS3510), 150 ms (TPS3511) | ms |
| Short-Circuit Turnon Protection Delay | 75 ms | ms |
| PSON Control to FPO Turnoff Delay | 2.3 ms + 38 ms debounce | ms |
| Noise Deglitch Time | 73 µs | µs |
Key Features
- Overvoltage Protection and Lockout for 12 V, 5 V, and 3.3 V
- Undervoltage Protection and Lockout for 5 V and 3.3 V
- Fault Protection Output With Open-Drain Output Stage
- Open-Drain Power Good Output Signal for Power Good Input, 3.3 V and 5 V
- Power Good Delay: 300 ms for TPS3510, 150 ms for TPS3511
- 75-ms Delay for 5-V and 3.3-V Power Supply Short-Circuit Turnon Protection
- 2.3-ms PSON Control to FPO Turnoff Delay with an additional 38-ms debounce
- 73-µs Width Noise Deglitches
- Wide Supply Voltage Range From 4 V to 15 V
Applications
The TPS3510DR is primarily used in personal computer switching power supply systems to provide robust protection and monitoring. It is suitable for systems that require overvoltage and undervoltage protection, power good indicators, and fault protection outputs. This IC is also applicable in battery-powered or handheld equipment where voltage stability is critical.
Q & A
- What is the primary function of the TPS3510DR?
The TPS3510DR is a 3-channel supervisor IC designed to provide overvoltage and undervoltage protection, power good indicators, and fault protection outputs in switch-mode power supplies.
- What are the voltage thresholds monitored by the TPS3510DR?
The TPS3510DR monitors 3.3 V, 5 V, and 12 V voltage thresholds for overvoltage and undervoltage conditions.
- What is the power good delay for the TPS3510DR?
The power good delay for the TPS3510DR is 300 ms, while the TPS3511 has a delay of 150 ms.
- How does the PSON control work?
The PSON (Power Supply On) control is an active-low signal that turns on all main power rails. It has a 2.3-ms delay to FPO (Fault Protection Output) with an additional 38-ms debounce at turnoff.
- What is the operating temperature range of the TPS3510DR?
The operating temperature range of the TPS3510DR is -40°C to 85°C.
- What type of package does the TPS3510DR come in?
The TPS3510DR comes in an 8-pin SOIC (D) package.
- How does the fault protection output (FPO) work?
The FPO is an open-drain output that goes high when an overvoltage or undervoltage condition is detected. It is latched high until the PSON signal is toggled from low to high or VDD is removed.
- What is the purpose of the power good output (PGO) signal?
The PGO signal is an open-drain output that goes high when the power supply outputs are within the specified voltage thresholds, indicating that the power is good.
- How does the noise deglitch feature work?
The noise deglitch feature has a 73-µs width to filter out noise spikes and prevent false triggering of protection circuits.
- What is the supply voltage range for the TPS3510DR?
The supply voltage range for the TPS3510DR is from 4 V to 15 V.
