IRPS5401MTRPBF POL SUIRBUCK

IRPS5401MTRPBF Description

The IRPS5401 is a complete power control device that can send up to five output voltages to processors, FPGAs, and other multi-rail power systems. Typical rails, like core voltage, memory voltage, and I/O voltage, are given by four high-efficiency, customizable switching regulators and a source/sink linear regulator, respectively. With good combined sensing for current, voltage, and temperature, the I2C and PMBus can be used for telemetry and to report problems.

Current mode control is replicated at a fixed frequency in the IRPS5401 switching regulators. There is no need to apply any external corrections. The IRPS5401 can be used in many different ways. The delivery of 2A is the job of both switchers A and B. Switchers C and D can each send out 4A, but they can also be put together to send out 8A. Switcher A can also be set up to use an external IR MOSFETTM Power Stage, which can be changed to provide up to 50 A or more.

IRPS5401MTRPBF Features

• A full-power system with five built-in ports.
• Switching regulators for 4A, 4A, 2A, and 2A
• Source/sink linear regulator for 500 mA.
• Use of a single rail from 5.5V to 12V.
• Outputs A through D have a range of 0.25 V to 5.1 V, and LDO has a range of 0.5 V to 3.6 V.
• allows outputs to be added together or an extra IR MOSFETTM Power Stage to be used to boost output.
• power all the way up to 50A.
• emulated current mode control without compensation from the outside.
• Switcher A uses a method called “differential voltage sensing” to be more accurate.
• I2C/PMBus with a level changer built in
• Advanced Sequencing Control
• Set of 74 PM Bus instructions that cover a lot of ground
• integrated current sensing and full monitoring, which includes voltage, current, temperature, and faults.
• Rated to work between -40°C and +125°C TJ,
• Lead-free, RoHS6, 7x7mm, 56-pin, 0.4mm pitch QFN

IRPS5401MTRPBF Detailed Description

● Description

The IRPS5401 is a digitally programmable PMU that supports I2C and PMBus for variable power management. Four separate switching regulators and one linear regulator allow for a maximum of five rails. The design’s size and performance can be optimized thanks to a switching frequency that is configurable between 200 kHz and 2 MHz. The programmable output voltage of the IRPS5401 switchers is between 0.25V and 2.55V (with a resistor divider) and can be increased to 5.1V.

Internal bias supply (LDO), typically 5.0 V, allows the IRPS5401 1 uF.to function. By connecting the LDO’s input (VSUPPLY) to the bus voltage (Vin_x), single-supply operation is made possible. The VSUPPLY pin needs to be decoupled using a capacitor of 1uF. This LDO has an output on the Vcc pin, which needs to be decoupled from the rest of the circuit by connecting it to the analog ground (pin 50). The internal driver circuitry requires an additional voltage, VDRV, which is produced by connecting a 2 ohm-1 uF filter across the Vcc pin and the VDRV pin.

Remember that the 1 uF at the VDRV pin needs to be connected to the power ground of the system (pin 57). The operating bus voltage (Vin_x) can be increased from 1.2V to 14V by connecting the Vcc pin to the VSUPPLY pin and using an external Vcc supply between 4.5V and 5.5V. The low-side MOSFET’s (synchronous MOSFET) on-resistance is used to measure current flow. Eliminating the need for external current-sensing resistors improves converter efficiency and lowers manufacturing costs.

● One-time programmable (OTP) memory

The OTP memory in the IRPS5401 is 64K in size. The OTP architecture relies on a nonvolatile split-channel anti-fuse memory cell that has been the subject of a patent. The OTP memory has a 20-year data retention rating and may be used in temperatures between -40 and 150 degrees Fahrenheit (-55 and 66 degrees Celsius). Each of the 26 OTP segments in this memory can be rewritten only once. For this reason, we refer to this area of memory as “multiple-times programmable” (MTP).

The MTP pin can be used to select a previously saved configuration file at startup, giving the user the option between a) changing the configuration registers and re-programming the MTP up to 26 times, and b) saving up to 15 configuration files at first programming. Utilizing the PowIRCenter GUI device programmer software, the user can make further modifications to the configuration file and save to MTP utilizing the remaining unused MTP segments if option b is selected.

● Device Power-up and Initialization

When VIN is increased during the boot process, the on-board LDO transforms it to a stable 5.0V at VCC. The internal digital circuitry requires a lower voltage, which is converted to 1.8 volts by a second LDO. The POR is held at a low voltage by an undervoltage lockout circuit until the VCC and P1V8 pins reach their respective thresholds and the internal 48 MHz oscillator is steady. As soon as the device is taken out of reset, an MTP load cycle begins, during which the contents of the MTP are loaded into the working registers. Regardless of the state of the enable pins, once the registers have been loaded from MTP, if the designer needs to modify the registers for the VR design, they can do so using I2C or PMBus.

● Switching Frequency

The IRPS5401’s switching frequency (fsw) can be adjusted via the PMBus command FREQUENCY_SWITCH, which is saved in MTP. From 200 kHz up to 2 MHz, the IRPS5401 will ACK any FREQUENCY_SWITCH instruction in 1 kHz increments (in 2 kHz increments for requests above 1 MHz). A 48 MHz internal clock is used to decode the command and set the actual FSW to the closest value that can be supported. The use of ninety-six (96) 48 MHz clocks, for instance, enables the support of 500 kHz. That means you’ll get exactly 500 kHz if you request it. However, 106.6667 clocks (48/0.45) would be needed to achieve 450 kHz. Here, we would use a frequency of 448.6 kHz, which is equal to one hundred and seven (107) 48 MHz clocks. At the 0.5 threshold and above, fractional numbers are rounded to the nearest whole number.

Conclusion

In conclusion, the IRPS5401 is a highly versatile power control device that offers exceptional performance and flexibility for a wide range of systems, including processors and FPGAs. The customizable switching regulators and source/sink linear regulator provide high efficiency and accuracy, while the advanced sequencing control and integrated current sensing ensure optimal voltage, current, temperature, and fault management. The IRPS5401’s emulation of current mode control without external correction and programmable output voltage make it simple and efficient to use in various applications. Additionally, its OTP memory and MTP segments provide greater programming flexibility, making it a highly adaptable device.

If you’re interested in the IRPS5401 or any other electronic component, please feel free to contact ICRFQ. We offer a vast selection of high-quality products at competitive prices, and our team is committed to providing excellent customer service. Whether you have specific requirements or need assistance in finding the right electrical components for your project, we’re here to help. Don’t hesitate to get in touch with us to learn more about our products and services.

The Latest And Most Popular Parts That You May Also Like