NCP380HSN10AGEVB ON Semiconductor, NCP380HSN10AGEVB Datasheet - Page 16

• Manufacturer Part Number: NCP380HSN10AGEVB
• Description: Power Management IC Development Tools NCP380 EVAL BOARD
• Manufacturer: ON Semiconductor
• Type: Power Driversr

Specifications of NCP380HSN10AGEVB

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: NCP380
• Output Current: 10 A

Reverse Voltage Protection
V
disconnects the output in order to protect the power supply.
The same time T
MOS plus a rearming time T
Enable Input
TTL compatible) or connected to the GND or VIN. A logic
low on EN or high on EN turns-on the device. A logic high
on EN or low on EN turns off device and reduces the current
consumption down to I
Power Dissipation
different contributing factors such as board layout, ambient
temperature, device environment, etc... Yet, the main
contributor in terms of junction temperature is the power
dissipation of the power MOSFET. Assuming this, the
power dissipation and the junction temperature in normal
mode can be calculated with the following equations:
Where:
Where:
taking into account the drop V
the following relation:
Where:
REV
When the output voltage exceeds the input voltage by
Enable pin must be driven by a logic signal (CMOS or
The junction temperature of the device depends on
Power dissipation in regulation mode can be calculated by
P
R
I
T
R
T
P
V
R
I
OUT
OCP
D
A
D
DS(on)
J
qJA
LOAD
IN
voltage during T
P
D
+ V
REV
R
T
= Power dissipation (W)
= Power MOSFET on resistance (W)
= Output current (A)
= Junction temperature (C)
= Package thermal resistance (C/W)
= Ambient temperature (C)
= Power dissipation (W)
= Input Voltage (V)
= Load Resistance (W)
= Output regulated current (A)
D
J
IN
+ P
+ R
is needed to turn on again the power
* R
INOFF
REV
D
DS(on)
LOAD
, the reverse voltage circuitry
RREV
.
R
IN
qJA
−V
.
I
) T
OCP
I
OUT
OUT
A
link to the load by
2
I
OCP
APPLICATION INFORMATION
http://onsemi.com
(eq. 2)
(eq. 3)
(eq. 4)
16
Blocking Control
power MOS. When the part is off, the body diode limits the
leakage current I
of the body diode is connected to IN pin and cathode is
connected to OUT pin. In operating condition, anode of the
body diode is connected to OUT pin and cathode is
connected to IN pin preventing the discharge of the power
supply.
Adjustable Current-Limit Programming
(for adjustable version only)
respectively mDFN and TSOP6 packages, are proposed to
have current limit flexibility for end Customer. Indeed, Ilim
pin is available to connect pull down resistor to ground,
which participate to the current threshold adjustment. It’s
strongly recommended to use 0.1 or 1% resistor tolerance to
keep the over current accuracy.
of all, the USB current to sustain, without the device enters
in the protection sequence. Main rule is to select this pull
down resistor in order to make sure min current limit is
above the USB current to provide continuously to the
upstream accessory.
current port for the accessory, the standard resistor selection
and typical/max over current threshold.
The blocking control circuitry switches the bulk of the
The
For this resistance selection, Customer should define first
Following, the main table selection contains the USB
NCP380xMUAJAA
REV
from OUT to IN. In this mode, anode
and
NCP380xSNAJAA,