LMZ31710RVQR CONVERTER

Technical Specifications of LMZ31710RVQR

Datasheet	LMZ31710RVQR datasheet
Category	Power Supplies – Board Mount
Family	DC DC Converters
Manufacturer	Texas Instruments
Series	SIMPLE SWITCHER?
Packaging	Tape & Reel (TR)
Part Status	Active
Type	Non-Isolated PoL Module
Number of Outputs	1
Voltage – Input (Min)	2.95V
Voltage – Input (Max)	17V
Voltage – Output 1	0.6 ~ 5.5 V
Voltage – Output 2	–
Voltage – Output 3	–
Current – Output (Max)	10A
Power (Watts) – Manufacture Series	–
Voltage – Isolation	–
Applications	ITE (Commercial)
Features	OCP, OTP, UVLO
Mounting Type	Surface Mount
Package / Case	42-QFN
Size / Dimension	0.40″ L x 0.40″ W x 0.17″ H (10.2mm x 10.2mm x 4.4mm)
Operating Temperature	-40°C ~ 85°C
Efficiency	94%
Power (Watts) – Max	–

Description for the LMZ31710

The LMZ31710 power module is a low-profile QFN package that integrates a 10-A DC/DC converter with power MOSFETs, a shielded inductor, and passives into an easy-to-use integrated power solution. The loop correction and magnetics part selection processes are dropped from this whole power solution, allowing for as few as three external components.

The 10 x 10 x 4.3 mm QFN packaging enables a small point-of-load design and is simple to solder into a printed circuit board. With a thermal impedance of 13.3°C/W, the device has a better than 95% efficiency and good power dissipation capabilities. The LMZ31710 is perfect for powering a variety of ICs and systems because it provides the flexibility and feature set of a discrete point-of-load design. A strong and dependable power solution that is compatible with traditional QFN mounting and testing methods is made possible by advanced packaging technology.

LMZ31710RVQR Features

• The proposed device has high efficiencies of up to 95%, which makes it a great option for energy-efficient applications. It also has an Eco-ModeTM, which reduces power usage during light loads to increase energy economy. Light load efficiency (LLE) is another gadget that optimises performance using little power.
• The output voltage may be easily adjusted with 1% reference accuracy throughout a range of 0.6 V to 5.5 V thanks to the wide-output voltage adjust capability. Due to its accuracy, it is the best option for applications that need precise output voltage regulation.
• The device allows parallel operation to increase current output, which is particularly advantageous in high-power applications. Additionally, it has an optional split power rail that enables input voltages as low as 2.95 V, increasing the input voltage range’s flexibility.
• With the customizable switching frequency capability, the switching frequency can be adjusted anywhere between 200 kHz and 1.2 MHz. Additionally, the gadget synchronizes with an external clock and outputs clock signals 180 degrees out of phase. The customizable slow start option makes the device’s start-up process seamless.
• The device allows parallel operation to increase current output, which is particularly advantageous in high-power applications. Additionally, it has an optional split power rail that enables input voltages as low as 2.95 V, increasing the input voltage range’s flexibility.
• With the customizable switching frequency capability, the switching frequency can be adjusted anywhere between 200 kHz and 1.2 MHz. Additionally, the gadget synchronizes with an external clock and outputs clock signals 180 degrees out of phase. The customizable slow start option makes the device’s start-up process seamless.
• The gadget may be used in various situations thanks to its operational temperature range of -40°C to +85°C. Furthermore, the gadget maintains a cool temperature even under high loads thanks to its improved thermal performance of 13.3°C/W.
• The device also complies with EN55022 Class B emissions standards to prevent interference with other electronic devices. Devices with low electromagnetic interference (EMI) are the best options for applications that call for them because they have incorporated shielded inductors, which ensure that the device creates little EMI.

LMZ31710RVQR Detailed Description

The LMZ31710 is a full-featured, over-moulded, 10-A, 2.95-V to 17-V input, synchronous step-down converter with integrated PWM, MOSFETs, inductor, and control circuits. By combining all but the input and output capacitors, this device makes it possible to create compact designs while retaining the flexibility to change important design parameters as needed. The output voltage range of the LMZ31710 is large, ranging from 0.6 V to 5.5 V. The output voltage is typically adjusted using a single external resistor.

To accommodate different input/output voltage situations and to maximize efficiency, the switching frequency can also be changed using an external resistor or a synchronizing pulse. The device uses an internal voltage reference that is 1% accurate over temperature to provide precise voltage regulation for various loads. To lower the input quiescent current and place the device in standby mode, the INH/UVLO pin can be pushed low. On the device’s IN/UVLO pin, a resistor divider can change the input undervoltage lockout. When the output voltage is within 5% of the nominal voltage, the device emits a power-good signal to inform the user.

The LMZ31710 can be used in higher current applications because it can be paralleled. When there is an overload circumstance, the device is protected by thermal shutdown and current restriction characteristics. Efficiency under light loads is improved via automatic pulse skip mode. A 42-pin QFN package with exposed bottom pads offers a thermally improved option for applications with limited space.

LMZ31710RVQR Feature Description

Input Voltage for VIN and PVIN The VIN and PVIN pins can be used jointly or individually in the LMZ31710 to provide a range of applications. The VIN voltage powers the device’s internal control circuits. The power converter system receives its input voltage from the PVIN voltage.

When connected together, the input voltage for the PVIN and VIN pins can be between 4.5 and 17 volts. The PVIN pin can range from as low as 2.95 V to 17 V when used separately from the VIN pin, which must be larger than 4.5 V. It is advised to supply VIN between 5 V and 12 V when using a split rail for optimum performance. Either input voltage UVLO can be properly adjusted using a voltage divider attached to the INH/UVLO pin.

● 3.3-V PVIN Operation

Applications requiring a PVIN of 3.3 V must supply a minimum of 4.5 V for VIN. It is suggested that VIN be supplied between 5 and 12 volts for optimal performance.

● Adjusting the Output Voltage (0.6 V to 5.5 V)

The LMZ31710’s output voltage is controlled via the VADJ control. The LMZ31710 has an output voltage adjustment range of 0.6 V to 5.5 V. The adjustment procedure necessitates the addition of RSET, which controls the output voltage, the coupling of SENSE+ to VOUT, and, occasionally, RRT, which controls the switching frequency. Direct connections between the VADJ (pin 26) and AGND (pin 23) are required for the RSET resistor. For better control, the SENSE+ pin (pin 27) must be linked to VOUT at the load or the device’s VOUT. Direct connections between RT/CLK (pin 22) and AGND (pin 23) are required for the RRT resistor.

● Input Capacitor

The LMZ31710 requires a minimum ceramic input capacitance of 44 F. An extra 100 F of nonceramic capacitance is advised for applications requiring transient load requirements. The maximum input voltage must be higher than the voltage rating of the input capacitors. The input capacitors’ worst-case total ripple current rating must be at least 5 Arms when operating at 50% duty cycle and maximum load.

● Power Good (PWRGD)

The PWRGD pin is output with an open drain. The PWRGD pin pulldown is released, and the SENSE+ pin floats after the voltage is between 95% and 104% of the set voltage. To a voltage source of 5.5 V or less, a pullup resistor between 10 k and 100 k is advised. Once VIN exceeds 1 V, the PWRGD pin is in a defined condition with a reduced ability to sink current.

The maximum current-sinking capability of the PWRGD pin is reached as soon as the VIN pin rises over 4.5 V. When SENSE+ is between 91% and 108% of the nominal set voltage, the PWRGD pin is pushed low. Additionally, if the input UVLO or thermal shutdown is asserted, the SS or TR pin is below 1.4 V, or both of these conditions are true, Both the INH pin and the PWRGD pin are lowered.

Conclusion

Consider using the LMZ31710RVQR DC to DC converter and switching regulator module, which enables you to easily switch between voltages to increase the flexibility and convenience of your electrical systems. This component, which has a voltage range of 0.6 to 5.5 V, can be used in many applications.

Additionally, due to its tough design, it can function in a wide range of temperatures, from -40 °C to 85 °C. Additionally, the component will be wrapped in tape and reel packaging to guarantee secure delivery and simple installation after arrival. For this or any other component, contact ICRFQ, the best distributor of electrical components in China. To help you choose the perfect components for your needs, we provide a huge selection of premium components and top-notch customer support.

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