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Microchip MIC21LV33 | Demoboard EV93M52A MIC21LV33 Evaluation Board
36V Dual Phase, Advanced COT Buck Controller with HyperLight Load® and Phase Shedding
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-36 V |
| Output 1 | 28 V / 50 A |
Description
The MIC21LV33 is a constant on-time, dual phase, synchronous buck controller featuring a unique adaptive on-time control architecture with Hyper Light Load® and phase shedding features enabled. The MIC21LV33 operates over an input supply range from 4.5V to 36V and can be used to supply up to 50A of output current. The output voltage is adjustable down to 0.6V with an ensured accuracy of ±1%. The device operates with programmable switching frequency from 100kHz to 1MHz per phase. The Hyper Speed Control® architecture supports ultrafast transient response under medium to heavy loads. The soft start is also programmable externally with a capacitor, thus enabling safe start-ups into heavy loads. The MIC21LV33 has a remote sense amplifier for accurate output voltage control. The MIC21LV33 offers a full suite of protection features to ensure protection of the IC during Fault conditions. These include under voltage lockout to ensure proper operation under power sag conditions, programmable soft start to reduce inrush current, overvoltage discharge, Hiccup mode short-circuit protection and thermal shutdown. The MIC21LV33 is available in a 32-pin 5 mm x 5 mm VQFN package with a -40°C to +125°C junction operating temperature range.
Features
- Input Voltage Range: 4.5V to 36V
- Input Down to 2V when VDD = 5V from External Supply
- Adjustable Output Voltage from 0.6V to 28V
- Adaptive Constant On-Time Control:
- High DeltaV operation
- Any Capacitor™ stable
- 0.6V Internal Reference with ±1% Accuracy
- ±0.5% Reference Accuracy for -40°C to 105°C
- Ripple Injection from Third Node Allows Greater than 50% Duty Cycles
- Hyper Light Load® and Automatic Phase Shedding
- Ability to Interface with External MCU
- Accurate Current Balancing Between Phases
- Accurate 180° Phasing of Outputs
- 100kHz to 1MHz Switching Frequency per Phase
- High-Voltage Internal 5V LDO for Single-Supply Operation
- Secondary LDO to Improve System Efficiency
- Supports Start-up to Pre-Bias Output
- Remote Sense Amplifier for Tight Output Regulation
- Droop Feature to Support Adaptive Voltage Positioning (AVP) for Improved Load Transient Response
- Precision Enable Function for Low Standby Current
- External Programmable Soft Start to Reduce Inrush Current
- Lossless RDSON Current Sensing with NTC Temperature Compensation or Resistor Sensing Method
- Programmable Current Limit and Hiccup Mode Short-Circuit Protection
- Thermal Shutdown with Hysteresis
- -40°C to +125°C Junction Temperature Range
- Compact Size 5mmx5mm 32-Pin VQFN Package
Typical applications
- Distributed Power Systems, FPGA, CPU, MEM, GPU Core Supplies
- Printers, Scanners, Graphic Cards and Video Cards
- Communications/Networking Infrastructure
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | W(mm) | H(mm) | To | Tl(mm) | Pins | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | L(mm) | Fl(mm) | Ceramic Type | Packaging | Qmin. | Q(%) | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | Pitch(mm) | Ø D(mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 25 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance10 pF | Capacitance±5% | Rated Voltage25 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Insulation Resistance10 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeNP0 Class I | Packaging7" Tape & Reel | – | Q-Factor600 % | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 16 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance100 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance5 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance100 pF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance1 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance3.3 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 100 V(DC), 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 100 V(DC) | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance100 nF | Capacitance±10% | Rated Voltage100 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor5 % | Insulation Resistance1 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WCAP-CSST Soft Termination, 0.8 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSST Soft Termination | Width0.8 mm | Height0.8 mm | – | – | – | Capacitance10 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length1.6 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||||
 | WCAP-CSMH Mid and High Voltage, 1.25 mm, 1.25 mm | Downloads8 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSMH Mid and High Voltage | Width1.25 mm | Height1.25 mm | – | – | – | Capacitance220 pF | Capacitance±5% | Rated Voltage200 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Insulation Resistance10 GΩ | Length2 mm | Pad Dimension0.5 mm | Ceramic TypeNP0 Class I | Packaging7" Tape & Reel | Q-Factor [1]1000 | Q-Factor1000 % | – | – | – | – | – | – | – | – | – | – | – | – | |||
| WCAP-CSGP MLCCs 25 V(DC), 1.6 mm, 0.8 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Width1.6 mm | Height0.8 mm | – | – | – | Capacitance100 nF | Capacitance±10% | Rated Voltage25 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance5 GΩ | Length3.2 mm | Pad Dimension0.6 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 16 V(DC), 2.5 mm, 2.5 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Width2.5 mm | Height2.5 mm | – | – | – | Capacitance47 µF | Capacitance±20% | Rated Voltage16 V (DC) | Size1210 | Operating Temperature -55 °C up to +85 °C | Dissipation Factor10 % | Insulation Resistance0.002 GΩ | Length3.2 mm | Pad Dimension0.75 mm | Ceramic TypeX5R Class II | Packaging7" Tape & Reel | Q-Factor [1]600 | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WP-THRSH REDCUBE THR with external thread, 7 mm, 8.5 mm | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWP-THRSH REDCUBE THR with external thread | Width7 mm | Height8.5 mm | Outer ThreadM3 | Thread Length5 mm | Pins4 | – | – | – | – | Operating Temperature -55 °C up to +150 °C | – | – | – | – | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | MaterialBrass | – | – | – | – | – | |||
 | WE-HCI SMT Flat Wire High Current Inductor, 10.2 mm, 4.7 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Width10.2 mm | Height4.7 mm | – | – | Pins2 | – | – | – | Size1050 | Operating Temperature -40 °C up to +100 °C | – | – | Length10.5 mm | – | – | – | – | – | Inductance0.4 µH | Performance Rated Current55.7 A | Saturation Current @ 10%18 A | Saturation Current @ 30%37 A | DC Resistance0.67 mΩ | Self Resonant Frequency160 MHz | MaterialSuperflux | – | – | – | – | – | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | Capacitance330 µF | Capacitance±20% | Rated Voltage35 V (DC) | – | – | Dissipation Factor9 % | – | Length20 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | Endurance 3000 | Ripple Current1210 mA | Leakage Current115.5 µA | Pitch3.5 mm | Diameter8 mm |