SMF Series
Trans-inductor Voltage Regulator Inductor
The Challenge of High Current Transient Response
Purpose of Multi-phase Voltage Regulator modules
- Application in fast transient response.
- Large output impedance.
- To effectively operate within limited space.
- High current application, and increasing bandwidth.
Traditional VR potential issues
- Limited capability to handle steep load transient responses.
- Unstable voltage during rapid transient response.
Solutions
- Application in fast transient response.
- Large output impedance.
- To effectively operate within limited space.
- High current application, and increasing bandwidth.
What is Trans-Inductor
Voltage Regulator Inductor?
- Traditionally, transient support heavily relied on output capacitor banks due to constraints posed by output filter inductors. These inductors hindered the rapid rise of current from the regulator.
- The implementation of Trans-Inductor Voltage Regulator filter configurations has induced a shift in this situation.
- Trans-Inductor Voltage Regulator topology collaborates with multiphase buck converters to effectively manage steep load transients while minimizing the need for output capacitance.
- When applied to the power stage outputs of a multiphase buck regulator. This topology empowers the regulator to achieve a rapid transient response without compromising crucial performance parameters.
- Increasing the transient response allows for the reduction or elimination of large output capacitors.
- Trans-Inductor Voltage Regulator enhances both circuit reliability and system cost-effectiveness.
- Currently, evolving applications require a Trans-inductor voltage regulator to address high current demands and support steep load current transient steps.
Advantages of
Trans-Inductor Voltage Regulator Inductor
-
Fast transient response:
Enables extremely fast transient response on multiphase voltage regulators. -
Trans-inductor voltage regulator has more bandwidth than traditional VR:
Potentially bringing 5X VR bandwidth or 30%-40% output caps reduction. -
Lower voltage drop:
Potentially bringing 5X VR bandwidth or 30%-40% output caps reduction.
[Ref] “Transformer-Based Voltage Regulators with Flexible TLVR Structure for Extremely Fast Dynamic Response”, Analog Devices, February 2023
Superworld New SMF Series
Product Advantages
The voltage at both ends of Lc increases during the transient load step, increasing the Lc inductance current. This current is linked to the principal windings of each phase through Lc. During this time, the coupling current increases at all phases. As a result, the voltage regulator offers additional transient current to assist in reducing output capacitor discharge.
We resolve the following
Improves voltage droop control and provides faster transient response, ensuring relatively steady voltage during rapid changes in CPU dynamic loads.
Reduces the use of capacitors, improving overall cost-effectiveness.
Our support & service to you!!
Our esteemed team possesses the expertise and commitment to offer comprehensive consultation and innovative solutions to effectively address any challenges you may encounter. We would like to assure you that our product is highly reliable and offers exceptional performance.
Usage Demonstration
Applications
Used in datacenters, storage systems, graphic cards, and computing goods where a consistent and reliable voltage is required.
They are also utilized in applications where the input voltage is unstable, such as battery-powered devices.
CPU
Graphic Cards
Data centers
Product Series
| Part Number: | Inductance (μH) |
DCR (mΩ) | Irms/Idc (mA) | Isat (mA) |
|---|---|---|---|---|
| SMF090610R10LZF | 0.10 | 0.125 | 75000 | 98000 |
| SMF090610R12LZF | 0.12 | 0.125 | 75000 | 79000 |
| SMF090610R15LZF | 0.15 | 0.125 | 75000 | 62000 |
| SMF090610R18LZF | 0.18 | 0.125 | 75000 | 54000 |
| SMF090610R22LZF | 0.22 | 0.125 | 75000 | 50000 |
| Part Number: | Inductance (μH) |
DCR (mΩ) | Irms/Idc (mA) | Isat (mA) |
|---|---|---|---|---|
| SMF100512R07KZF | 0.07 | 0.125 | 75000 | 127000 |
| SMF100512R08KZF | 0.08 | 0.125 | 75000 | 111000 |
| SMF100512R09KZF | 0.09 | 0.125 | 75000 | 98000 |
| SMF100512R10KZF | 0.10 | 0.125 | 75000 | 89000 |
| SMF100512R12KZF | 0.12 | 0.125 | 75000 | 74000 |
| SMF100512R15KZF | 0.15 | 0.125 | 75000 | 59000 |
| SMF100512R17KZF | 0.17 | 0.125 | 75000 | 52000 |
| Part Number: | Inductance (μH) |
DCR (mΩ) | Irms/Idc (mA) | Isat (mA) |
|---|---|---|---|---|
| SMF110511R07LZF | 0.070 | 0.125 | 77000 | 160000 |
| SMF110511R08LZF | 0.080 | 0.125 | 77000 | 150000 |
| SMF110511R09LZF | 0.090 | 0.125 | 77000 | 135000 |
| SMF110511R12LZF | 0.120 | 0.125 | 77000 | 102000 |
| SMF110511R15LZF | 0.150 | 0.125 | 77000 | 84000 |
| SMF110511R17LZF | 0.170 | 0.125 | 77000 | 70000 |
| SMF110511R20LZF | 0.200 | 0.125 | 77000 | 58000 |
| SMF110511R10LZF | 0.105 | 0.125 | 77000 | 125000 |
| Part Number: | Inductance (μH) |
DCR (mΩ) | Irms/Idc (mA) | Isat (mA) |
|---|---|---|---|---|
| SMF120612R10LZF | 0.100 | 0.125 | 70000 | 125000 |
| SMF120612R105LZF | 0.105 | 0.125 | 70000 | 120000 |
| SMF120612R12LZF | 0.120 | 0.125 | 70000 | 100000 |
| SMF120612R15LZF | 0.150 | 0.125 | 70000 | 80000 |
| SMF120612R17LZF | 0.170 | 0.125 | 70000 | 70000 |
