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PDF ADP3414 Data sheet ( Hoja de datos )
| Número de pieza | ADP3414 | |
| Descripción | Dual Bootstrapped MOSFET Driver | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADP3414 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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FEATURES
All-In-One Synchronous Buck Driver
Bootstrapped High-Side Drive
One PWM Signal Generates Both Drives
Anticross-Conduction Protection Circuitry
Pulse-by-Pulse Disable Control
APPLICATIONS
Mobile Computing CPU Core Power Converters
Multiphase Desktop CPU Supplies
Single-Supply Synchronous Buck Converters
Standard-to-Synchronous Converter Adaptations
GENERAL DESCRIPTION
The ADP3414 is a dual MOSFET driver optimized for driving
two N-channel MOSFETs which are the two switches in a
nonisolated synchronous buck power converter. Each of the
drivers is capable of driving a 3000 pF load with a 20 ns propa-
gation delay and a 30 ns transition time. One of the drivers can
be bootstrapped, and is designed to handle the high-voltage
slew rate associated with “floating” high-side gate drivers.
The ADP3414 includes overlapping drive protection (ODP)
to prevent shoot-through current in the external MOSFETs.
The ADP3414 is specified over the commercial temperature
range of 0°C to 70°C and is available in an 8-lead SOIC package.
7V
ADP3414
VCC
IN
DELAY
+1V
1V
Dual Bootstrapped
MOSFET Driver
ADP3414
FUNCTIONAL BLOCK DIAGRAM
VCC
BST
IN
OVERLAP
PROTECTION
CIRCUIT
ADP3414
PGND
DRVH
SW
DRVL
12V
D1
BST
CBST
DRVH
SW
Q1
DRVL
PGND
Q2
Figure 1. General Application Circuit
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
1 page  
T
DRVH
5V/DIV
R3
IN
R2
2V/DIV
R1
TA = 25؇C
VCC = 5V
DRVL
5V/DIV
40ns/DIV
TPC 1. DRVH Fall and DRVL Rise
Times
Typical Performance Characteristics–ADP3414
T
TA = 25؇C
VCC = 5V
R3
DRVL
2V/DIV
R2 IN
2V/DIV
R1
DRVH
5V/DIV
40ns/DIV
50
CLOAD = 3nF
45 DRVH @ VCC = 5V
40 DRVH @ VCC = 7V
35 DRVL @ VCC = 5V
30
25 DRVL @ VCC = 7V
TPC 2. DRVL Fall and DRVH Rise
Times
20 0
25 50 75 100
JUNCTION TEMPERATURE – ؇C
125
TPC 3. DRVH and DRVL Rise Times
vs. Temperature
35
DRVL @ VCC = 7V
30
DRVL @ VCC = 5V
25
20
DRVH @ VCC = 7V
15
DRVH @ VCC = 5V
10
5
0
0 25 50 75 100 125
JUNCTION TEMPERATURE – ؇C
TPC 4. DRVH and DRVL Fall Times
vs. Temperature
55
50
DRVH @ VCC = 5V
45
40
DRVH @ VCC = 7V
35
30
DRVL @ VCC = 5V
25
20 DRVL @ VCC = 7V
15
10
1.0
2.0 3.0 4.0
LOAD CAPACITANCE – nF
5.0
TPC 5. DRVH and DRVL Rise Times
vs. Load Capacitance
37
32
DRVL @ VCC = 7V
27
22
17 DRVH @ VCC = 5V
DRVH @ VCC = 7V
12
DRVL @ VCC = 5V
7
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
LOAD CAPACITANCE – nF
TPC 6. DRVH and DRVL Fall Times
vs. Load Capacitance
35
TA = 25؇C
30 CLOAD = 3nF
25
VCC = 7V
20
15
10 VCC = 5V
5
0
0 200 400 600 800 1000 1200 1400
IN FREQUENCY – kHz
TPC 7. Supply Current vs.
Frequency
8.5
8.0
VCC = 7V
7.5
7.0 CLOAD = 3nF
fIN = 250kHz
6.5
6.0
VCC = 5V
5.5
5.0
0
25 50 75 100
JUNCTION TEMPERATURE – ؇C
125
TPC 8. Supply Current vs.
Temperature
REV. 0
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ADP3414.PDF ] | |
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