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NCP81146MNTBG PDF даташит

Спецификация NCP81146MNTBG изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «VR12.5 Compatible Synchronous Buck MOSFET Driver».

Детали детали

Номер произв NCP81146MNTBG
Описание VR12.5 Compatible Synchronous Buck MOSFET Driver
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCP81146MNTBG Даташит, Описание, Даташиты
NCP81146
VR12.5 Compatible
Synchronous Buck MOSFET
Drivers
The NCP81146 is a high performance dual MOSFET gate driver
optimized to drive the gates of both highside and lowside power
MOSFETs in a synchronous buck converter. It can drive up to 3 nF
load with a 25 ns propagation delay and 20 ns transition time.
Adaptive anticrossconduction and power saving operation
circuit can provide a low switching loss and high efficiency solution
for notebook and desktop systems. Bidirectional EN pin can provide
a fault signal to controller when the gate driver fault detect under
OVP, UVLO occur. Also, an undervoltage lockout function
guarantees the outputs are low when supply voltage is low.
Features
Faster Rise and Fall Times
Adaptive AntiCrossConduction Circuit
Integrated Bootstrap Diode
Pre OV function
ZCD Detect
Floating Top Driver Accommodates Boost Voltages of up to 35 V
Output Disable Control Turns Off Both MOSFETs
Undervoltage Lockout
Power Saving Operation Under Light Load Conditions
Direct Interface to NCP6151 and Other Compatible PWM
Controllers
Thermally Enhanced Package
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
Power Solutions for Desktop Systems
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1
DFN8
MN SUFFIX
CASE 506AA
MARKING DIAGRAM
1
A4MG
G
A4 = Specific Device Code
M = Date Code
G = PbFree Device
ORDERING INFORMATION
Device
Package
Shipping
NCP81146MNTBG DFN8 3000 / Tape & Reel
(PbFree)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2013
October, 2013 Rev. 0
1
Publication Order Number:
NCP81146/D









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NCP81146MNTBG Даташит, Описание, Даташиты
VCC
PWM
NCP81146
BST 1
DRVH
PWM
EN
FLAG
9
SW
GND
VCC
DRVL
(Top View)
Figure 1. Pin Diagram
Logic
AntiCross
Conduction
VCC
BST
DRVH
SW
DRVL
EN ZCD
UVLO
Detection
Fault
PreOV
Figure 2. Block Diagram
Table 1. Pin Descriptions
Pin No.
Symbol
1 BST
2 PWM
3 EN
4 VCC
5 DRVL
6 GND
7 SW
8 DRVH
9 FLAG
Description
Floating bootstrap supply pin for high side gate driver. Connect the bootstrap capacitor between this pin
and the SW pin.
Control input. The PWM signal has three distinctive states: Low = Low Side FET Enabled, Mid = Diode
Emulation Enabled, High = High Side FET Enabled.
Logic input. A logic high to enable the part and a logic low to disable the part.
Power supply input. Connect a bypass capacitor (0.1 mF) from this pin to ground.
Low side gate drive output. Connect to the gate of low side MOSFET.
Bias and reference ground. All signals are referenced to this node (QFN Flag).
Switch node. Connect this pin to the source of the high side MOSFET and drain of the low side MOSFET.
High side gate drive output. Connect to the gate of high side MOSFET.
Thermal flag. There is no electrical connection to the IC. Connect to ground plane.
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NCP81146MNTBG Даташит, Описание, Даташиты
12V_POWER
R1
1.02
TP4
PWM
DRON
C5
1uF
NCP81146
R143
R164 C4 0.027uF
0.0
NCP81146TP3
0.0
BST HG
VREG_SW1_HG
PWM SW
VREG_SW1_OUT
EN GND
TP6 TP7
VCC LG
VREG_SW1_LG
PAD
TP8
TP1
TP2
R142
Q1
NTMFS4821N
C1
4.7uF
C2
4.7uF
+
C3 CE9
4.7uF 390uF
0.0
TP5
L VCCP
Q9 Q10
NTMFS4851N NTMFS4851N
R3
2.2
235nH
JP13_ETCH CSN11
C6
2700pF
JP14_ETCH CSP11
Figure 3. Application Circuit
Table 2. ABSOLUTE MAXIMUM RATINGS
Pin Symbol
VCC
Pin Name
Main Supply Voltage Input
VMAX
15 V
VMIN
0.3 V
BST
Bootstrap Supply Voltage
35 V wrt/ GND
0.3 V wrt/SW
40 V 50 ns wrt/ GND
15 V wrt/ SW
SW
Switching Node
35 V
5 V
(Bootstrap Supply Return)
40 V 50 ns
10 V (200 ns)
DRVH
High Side Driver Output
BST+0.3 V
0.3 V wrt/SW
2 V (<200 ns) wrt/SW
DRVL
Low Side Driver Output
VCC+0.3 V
0.3 V DC
5 V (<200 ns)
PWM
DRVH and DRVL Control Input
6.5 V
0.3 V
EN
Enable Pin
6.5 V
0.3 V
GND
Ground
0V 0V
Stresses exceeding Maximum Ratings may damage the device. Maximum 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
device reliability.
Table 3. THERMAL INFORMATION (All signals referenced to AGND unless noted otherwise)
Symbol
Parameter
Value
RqJA
TJ
TA
TSTG
MSL
Thermal Characteristic (Note 1)
Operating Junction Temperature Range (Note 2)
Operating Ambient Temperature Range
Maximum Storage Temperature Range
Moisture Sensitivity Level
74
40 to +150
40 to +125
55 to +150
1
* The maximum package power dissipation must be observed.
1. I in2 Cu, 1 oz thickness.
2. Operation at 40°C to 10°C guaranteed by design, not production tested.
Unit
°C/W
°C
°C
°C
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Номер в каталогеОписаниеПроизводители
NCP81146MNTBGVR12.5 Compatible Synchronous Buck MOSFET DriverON Semiconductor
ON Semiconductor

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