Overview
The TPS40170RGYT is a full-featured, synchronous PWM buck controller designed by Texas Instruments. It operates within an input voltage range of 4.5 V to 60 V and is optimized for high-power density and high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation, enabling instant response to input voltage changes. The switching frequency is programmable between 100 kHz and 600 kHz, making it versatile for various power management needs.
The TPS40170RGYT is packaged in a 20-pin 3.5 mm × 4.5 mm VQFN (RGY) package and includes a range of protection and monitoring features, such as programmable undervoltage lockout (UVLO), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown. It also supports pre-biased outputs, provides an open-drain power good (PGOOD) signal, and features closed-loop soft-start and output voltage tracking.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | - | 60 | V |
| Switching Frequency Range | 100 kHz | - | 600 kHz | - |
| Reference Voltage | 591 mV | 600 mV | 609 mV | - |
| Output Voltage Accuracy | - | 1% | - | - |
| Thermal Shutdown Temperature | - | 165°C | - | - |
| Package Type | - | 20-Pin VQFN (RGY) | - | - |
| Package Size | - | 3.5 mm × 4.5 mm | - | - |
Key Features
- Programmable UVLO and hysteresis
- Voltage mode control with voltage feed-forward compensation
- Programmable switching frequency between 100 kHz and 600 kHz
- Bi-directional frequency synchronization with primary and secondary options
- Low-side FET sensing overcurrent protection and high-side FET sensing short-circuit protection with integrated thermal compensation
- Programmable closed-loop soft-start
- Supports pre-biased outputs
- Thermal shutdown at 165°C with hysteresis
- Voltage tracking and power good signal
- ENABLE pin with 1-µA low current shutdown
- LDO output of 8.0 V and 3.3 V
- Integrated Bootstrap Diode
Applications
- POL (Point of Load) modules
- Wide input voltage, high-power density DC-DC converters for industrial equipment
- Networking and telecom equipment
- Industrial robots and motor drives
Q & A
- What is the input voltage range of the TPS40170RGYT?
The input voltage range is from 4.5 V to 60 V.
- What is the programmable switching frequency range of the TPS40170RGYT?
The switching frequency can be programmed between 100 kHz and 600 kHz.
- What type of control does the TPS40170RGYT implement?
The controller implements voltage-mode control with input voltage feed-forward compensation.
- Does the TPS40170RGYT support pre-biased outputs?
- What is the thermal shutdown temperature of the TPS40170RGYT?
The thermal shutdown temperature is 165°C with hysteresis.
- What package type and size does the TPS40170RGYT come in?
The TPS40170RGYT comes in a 20-Pin VQFN (RGY) package, measuring 3.5 mm × 4.5 mm.
- Does the TPS40170RGYT have built-in protection features?
- Can the TPS40170RGYT be synchronized with other controllers?
- What is the accuracy of the output voltage regulation?
The output voltage regulation has an accuracy of 1%.
- Does the TPS40170RGYT have an integrated Bootstrap Diode?
