MAX20059
72V, 1A, Automotive Synchronous Step-Down DC-DC Converter
72V Synchronous Buck Converter with Internal FETs Enables High Efficiency and Low Temperature Rise
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Key Features
Applications/Uses
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 76 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 18 |
| IOUT1 (A) (max) | 1 |
| Switch Type | Internal |
| Output Adjust. Method | Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1200 1700 2000 220 250 275 300 330 350 400 440 500 540 560 600 700 750 800 900 2200 |
| Design Tools | EE-Sim |
| Package/Pins | TDFN/12 |
| Budgetary Price (See Notes) | 0 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 72V, 1A, Automotive Synchronous Step-Down DC-DC Converter | Mar 31, 2020 | |
| App Note | How to Use the MAX20058 and MAX20059 for Negative Output Voltage Applications | ||
| Design Solution | 48V Buck Converter Helps MHEVs Meet Fuel Emission Standards |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 76 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 18 |
| IOUT1 (A) (max) | 1 |
| Switch Type | Internal |
| Output Adjust. Method | Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1200 1700 2000 220 250 275 300 330 350 400 440 500 540 560 600 700 750 800 900 2200 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=9794', '') |
| Package/Pins | TDFN/12 |
| Budgetary Price (See Notes) | 0 |
Key Features
- Synchronous DC-DC Converters with Integrated FETs
- 72V Input for 48V Systems
- Internal Compensation
- Flexibility
- Output Adjustable from 0.8V to 90%VIN
- 200kHz to 2200kHz Adjustable Frequency with External Clock Synchronization
- Programmable Peak Current Limit (1.14A or 1.6A)
- Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing
- Protection Features and Operating Range Ideal for Automotive Applications
- Programmable EN/UVLO Threshold
- Adjustable Soft-Start and Prebiased Power-Up
- Thermal Shutdown
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
Applications/Uses
- 48V Systems
- Mild Hybrid Applications
Description
The MAX20059 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter IC with integrated MOSFETs that operates over a 4.5V to 72V input. The converters can deliver up to 1A current. Output voltage is programmable from 0.8V to 90%VIN. The feedback voltage-regulation accuracy over -40°C to +125°C is ±1.5%.
The IC features a peak-current-mode-control architecture and can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.
The MAX20059 is available in a 12-pin (3mm x 3mm) side-wettable TDFN package with an exposed pad for thermal heat dissipation.
Technical Docs
| Data Sheet | 72V, 1A, Automotive Synchronous Step-Down DC-DC Converter | Mar 31, 2020 | |
| App Note | How to Use the MAX20058 and MAX20059 for Negative Output Voltage Applications | ||
| Design Solution | 48V Buck Converter Helps MHEVs Meet Fuel Emission Standards |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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