Overview
The TPS543620RPYR from Texas Instruments is a high-efficiency, 6-A synchronous buck converter designed for a wide range of applications. It employs an internally-compensated, fixed-frequency Advanced Current Mode (ACM) control, which supports stable static and transient operation without the need for complex external compensation. The device operates with an input voltage range of 4 V to 18 V and can produce output voltages from 0.5 V to 7 V. It is packaged in a small 2.5-mm x 3-mm VQFN-HR package, making it ideal for designs requiring a compact solution size.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Input Voltage (VIN) | 4 | 18 | V | |
| Output Voltage (VOUT) | 0.5 | 7 | V | |
| Output Current (IOUT) | 6 | A | ||
| Switching Frequency | 500 kHz | 2.2 MHz | ||
| High-Side MOSFET On-Resistance (RDS(on)HS) | 25 | mΩ | ||
| Low-Side MOSFET On-Resistance (RDS(on)LS) | 6.5 | mΩ | ||
| Operating Junction Temperature (TJ) | -40 | 150 | °C | |
| Voltage Reference Accuracy | ±0.5% | % |
Key Features
- Fixed-frequency, internally-compensated Advanced Current Mode (ACM) control
- Integrated 25-mΩ and 6.5-mΩ MOSFETs
- Three selectable PWM ramp options to optimize the control loop performance
- Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz
- Synchronizable to an external clock
- Selectable soft start times: 0.5 ms, 1 ms, 2 ms, and 4 ms
- Monotonic start-up into pre-biased outputs
- Selectable current limits to support 6-A and 3-A operation
- Adjustable input undervoltage lockout (UVLO) through the EN pin
- Power good output monitor
- Protection features include output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
Applications
- Wireless infrastructure and wired communications equipment
- Optical and fiber networks
- Test and measurement equipment
- Medical and healthcare devices
Q & A
- What is the input voltage range of the TPS543620RPYR?
The input voltage range is from 4 V to 18 V.
- What are the output voltage and current capabilities of the TPS543620RPYR?
The output voltage range is from 0.5 V to 7 V, and the maximum output current is 6 A.
- What are the switching frequency options for the TPS543620RPYR?
The device can operate at switching frequencies of 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz.
- Can the TPS543620RPYR be synchronized to an external clock?
- What are the on-resistances of the integrated MOSFETs?
The high-side MOSFET has an on-resistance of 25 mΩ, and the low-side MOSFET has an on-resistance of 6.5 mΩ.
- What is the operating junction temperature range of the TPS543620RPYR?
The operating junction temperature range is from -40°C to 150°C.
- What protection features are included in the TPS543620RPYR?
The device includes output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection.
- How can the soft start time be adjusted on the TPS543620RPYR?
The soft start time can be adjusted to 0.5 ms, 1 ms, 2 ms, or 4 ms using the MODE pin.
- What is the package type and size of the TPS543620RPYR?
The device is packaged in a 2.5-mm x 3-mm VQFN-HR package.
- What are some typical applications for the TPS543620RPYR?
Typical applications include wireless infrastructure, optical and fiber networks, test and measurement equipment, and medical devices.
