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©

 Semiconductor Components Industries, LLC, 2011

December, 2011 

 Rev. P1

1

Publication Order Number:

EVBUM2050/D

NCV890201GEVB

NCV890201 Automotive
Grade High-Frequency
Buck Regulator Evaluation
Board User's Manual

Description

The NCV890201 demonstration board provides a convenient way to

evaluate a high-frequency buck converter design. No additional
components are required, other than dc supplies for the input and
enable voltages. An external clock can be used to synchronize the
switching frequency; and the board also provides a synchronization
output, enabling it to be used as a master. It is configured for a 3.3 V
output with a 2 MHz switching frequency and a 2.0 A maximum
output current, over the typical 4.5 V to 18 V automotive input voltage
range. In addition, the board regulates up to 36 V thanks to switching
frequency foldback.

Key Features

3.3 V Output Voltage

2 MHz Switching Frequency

2.0 A Current Limit

Wide Input Voltage of 4.5 V to 36 V

Regulates through Load Dump Conditions

External Clock Synchronization up to 2.5 MHz

Synchronization Output

Automotive Grade

Figure 1. NCV890201GEVB Board Picture

http://onsemi.com

EVAL BOARD USER’S MANUAL

Содержание NCV890201GEVB

Страница 1: ...switching frequency and the board also provides a synchronization output enabling it to be used as a master It is configured for a 3 3 V output with a 2 MHz switching frequency and a 2 0 A maximum ou...

Страница 2: ...m Ratings are stress ratings only Functional operation above the Recommended Operating Conditions is not implied Extended exposure to stresses above the Recommended Operating Conditions may affect dev...

Страница 3: ...dc enable voltage within the 4 5 V to 36 V range between EN and GND 4 Optionally for external clock synchronization connect a pulse source between SYNCI and GND The high state level should be within t...

Страница 4: ...m 4 TYPICAL PERFORMANCE Efficiency Figure 4 Efficiency at 2 MHz for a 3 3 V output Start up Figure 5 Typical start up with VIN 13 2 V VOUT 3 3 V and IOUT 0 2 A Figure 6 Typical start up with VIN 13 2...

Страница 5: ...5 Load Transients Figure 7 Load transient 0 1 A to 2 0 A with VOUT 3 3 V and VIN 13 2 V Figure 8 Load transient 0 2 A to 2 0 A with VOUT 3 3 V and VIN 13 2 V Figure 9 Load transient 2 0 A to 0 2 A wi...

Страница 6: ...EVB http onsemi com 6 Synchronization Figure 10 Starting synchronization at 2 5 MHz from free running SYNCI SYNCO SW VOUT Minimum on time Figure 11 Minimum on time seen during a load transient VIN SW...

Страница 7: ...NCV890201GEVB http onsemi com 7 Schematic...

Страница 8: ...NCV890201GEVB http onsemi com 8 PCB LAYOUT Figure 12 Top View Figure 13 Bottom View...

Страница 9: ...customer s technical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in syste...

Страница 10: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information ON Semiconductor NV890201MWTXGEVB...

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