Overview
The TL5001AQDRG4Q1, produced by Texas Instruments, is a pulse-width-modulation (PWM) control circuit integrated into a single monolithic chip. This device is primarily designed for power-supply control and includes a range of essential components such as an error amplifier, a regulator, an oscillator, a PWM comparator with dead-time-control input, undervoltage lockout (UVLO), short-circuit protection (SCP), and an open-collector output transistor. The TL5001AQDRG4Q1 is characterized for operation over a wide temperature range from –40°C to 125°C, making it suitable for various automotive and industrial applications.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| VCC Supply Voltage | V | 41 | |||
| VI(FB) Amplifier Input Voltage | V | 20 | |||
| VO Output Voltage | V | 51 | |||
| IO Output Current | mA | 21 | |||
| IO(peak) Output Peak Current | mA | 100 | |||
| Ta Operating Ambient Temperature Range | °C | –40 | 125 | ||
| Error Amplifier Input Bias Current | TA = MIN to MAX | nA | –160 | –500 | |
| Error Amplifier Output Voltage Swing | TA = MIN to MAX | V | 0.3 | 0.4 | |
| Open-Loop Voltage Amplification | TA = MIN to MAX | dB | 80 | ||
| Unity Gain Bandwidth | TA = MIN to MAX | MHz | 1.5 | ||
| Output Saturation Voltage | IO = 10 mA | V | 1.5 | 2 | |
| Off-State Current | VO = 50 V, VCC = 0 | µA | 10 | ||
| Short-Circuit Output Current | VO = 6 V | mA | 40 |
Key Features
- Error Amplifier: With a common-mode voltage range from 0 V to 1.5 V and a noninverting input connected to a 1-V reference.
- Oscillator: Frequency set by an external resistor connected to GND.
- Dead-Time Control (DTC): Adjustable dead time from 0% to 100% using an external resistor.
- Undervoltage Lockout (UVLO): Turns the output off during low VCC conditions until VCC recovers.
- Short-Circuit Protection (SCP): Protects against short circuits.
- Open-Collector Output Transistor: Suitable for driving external power devices.
- Wide Temperature Range: Operates from –40°C to 125°C.
Applications
The TL5001AQDRG4Q1 is primarily used in power-supply control circuits, particularly in automotive and industrial environments. It is suitable for various applications such as:
- Switch-mode power supplies.
- DC-DC converters.
- Motor control systems.
- Automotive electronics.
- Industrial control systems.
Q & A
- What is the primary function of the TL5001AQDRG4Q1?
The TL5001AQDRG4Q1 is a pulse-width-modulation (PWM) control circuit designed primarily for power-supply control. - What is the operating temperature range of the TL5001AQDRG4Q1?
The device operates from –40°C to 125°C. - How is the oscillator frequency set in the TL5001AQDRG4Q1?
The oscillator frequency is set by terminating RT with an external resistor to GND. - What protection features does the TL5001AQDRG4Q1 include?
The device includes undervoltage lockout (UVLO) and short-circuit protection (SCP). - How can the dead time be adjusted in the TL5001AQDRG4Q1?
The dead time can be adjusted from 0% to 100% by connecting an external resistor between DTC and GND. - What is the typical reference voltage tolerance of the TL5001AQDRG4Q1?
The typical reference voltage tolerance is ±3%. - What is the maximum output current of the TL5001AQDRG4Q1?
The maximum output current is 21 mA, with a peak current of 100 mA. - What is the open-loop voltage amplification of the error amplifier?
The open-loop voltage amplification is 80 dB. - What is the unity gain bandwidth of the error amplifier?
The unity gain bandwidth is 1.5 MHz. - What is the off-state current of the output transistor?
The off-state current is 10 µA when VO = 50 V and VCC = 0.
