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© Semiconductor Components Industries, LLC, 2014
February, 2014 − Rev. 1
1 Publication Order Number:
EVBUM2225/D
NCV887720BSTGEVB
NCV887720 Automotive
Grade High-Frequency
Start-Stop Boost Controller
Evaluation Board
User'sManual
Description
This NCV887720 evaluation board provides a convenient
way to evaluate a high frequency boost controller designed
to supply a minimum output voltage during Start-Stop
vehicle battery voltage sags. The unit is in low I
q
sleep-mode
under normal battery operating condition and wakes-up
when the monitored voltage drops below 10.65 V and begin
regulating once 10.0 V is reached. Switching frequency is
set to 440 kHz with a user selectable ROSC resistor. The
evaluation board is rated 10.0 V / 2.5 A at a 3.75 V input
voltage. Operation below 3.75 V is possible if output current
is reduced.
Key Features
• Automatic Enable below 10.65 V
• Disable Override Function
• Boost Operation at 10.0 V
• 440 kHz Switching Frequency
• Input Undervoltage Lockout
• Wide Input Voltage of 3.75 V to 45 V
• Low Quiescent Current in Sleep Mode (< 12 mA
Typical)
• Cycle-by-Cycle Current Limit Protection
• Automotive Grade
Figure 1. NCV887720 Start−Stop Evaluation Board
http://onsemi.com
EVAL BOARD USER’S MANUAL
Verzeichnis
