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기능 Sychronous Rectified Buck MOSFET Driver IC
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PX3515 데이터시트, 핀배열, 회로
An Infineon Technologies Company
Sychronous Rectified Buck MOSFET Driver IC
Datasheet
PX3515
Applications
Core power regulation for Intel® and AMD®
μprocessors
High current DC-DC converters
POL power converters for memory, DSP, FPGA, ASIC
Features
Dual MOSFET driver for synchronous rectified bridge
converters
Adjustable high-side and low-side MOSFET gate drive
voltages for optimal efficiency
- High-side VCC (7V to 12V)
- Low-side PVCC (5V to 12V)
Integrated bootstrap diode for reduced part count
Adaptive gate drive control prevents cross-conduction
Fast rise and fall times supports switching rates of up
to 2MHz
Capable of sinking more than 4A peak current for low
switching losses
Three-state PWM input for output stage shutdown
VCC under-voltage protection
Lead-free (RoHS compliant) SOIC and DFN packages
Description
The PX3515 is a dual high speed driver designed to drive a
wide range of high-side and low-side power N-channel
MOSFETs in synchronous rectified buck converters. When
combined with the Primarion PX35XX family of Digital Multi-
phase Controllers or PX75XX Digital Point of Load (Di-
POLTM) Controllers and N-channel MOSFETs, the PX3515
forms a complete core-voltage regulator solution for
advanced micro and graphics processors as well as point-
of-load applications.
The PX3515 provides the capability of driving the high-side
gate and low-side gate with independent drive voltages
over a range from 7V to 12V (high-side VCC) and 5V to
12V (low-side PVCC). This provides the flexibility necessary
to optimize applications involving trade-offs between gate
charge and conduction losses.
Adaptive zero shoot-through protection is integrated into the
IC which prevents both upper and lower MOSFETs from
conducting simultaneously and to minimize dead time. The
PX3515 has small propagation delay from input to output
with fast rise and fall times.
The PX3515 drivers also feature a three-state PWM input
which, when used together with Primarion’s Digital
Controllers, eliminates the need for Schottky diodes that are
often used in systems to protect the load from reversed
output voltage events.
PX3515 DFN Package
Ordering Information
Part Number
PX3515BDDG
Ambient
0 to 85°C
Package
10-lead DFN
10-pin DFN (TOP VIEW)
UGATE
BOOT
N/C
PWM
GND
1
2
3
4
5
GND
10 PHASE
9 PVCC
8 N/C
7 VCC
6 LGATE
.
PD-3515-001A
Copyright © 2008, Primarion, Inc.
Contents subject to change without notice
26-Aug-08




PX3515 pdf, 반도체, 판매, 대치품
PX3515
Electrical Characteristics
Operating conditions: VCC = +12.0V, PVCC = +12.0V, TA = 25°C, unless otherwise specified.
Table 3. Electrical Characteristics
Parameter
Supply Characteristics
VCC supply current
PVCC supply current
Quiescent current
VCC rising threshold
VCC falling threshold
VCC hysteresis
PWM Input
Input current
Sink/source impedance
Shutdown window (3-state)
PWM open threshold
PWM rising threshold
PWM falling threshold
PWM input slew rate
Minimum pulse width high side
Upper Gate (UGATE) Output
Shutdown hold off time
UGATE rise time
UGATE fall time
3-state rising propagation delay
UGATE turn-on propagation delay
UGATE turn-off propagation delay
Lower Gate (LGATE) Output
Shutdown hold-off time
LGATE rise time
LGATE fall time
3-state rising propagation delay
LGATE turn-on propagation delay
LGATE turn-off propagation delay
Output Characteristics (note 3)
Upper drive source current
Upper drive source impedance
Upper drive sink current
Upper drive sink impedance
Lower drive source current
Lower drive source impedance
Lower drive sink current
Lower drive sink impedance
Conditions
fPWM = 1MHz, no load
fPWM = 1MHz, no load
1.4 VPWM 2.2
dv/dt < 2.5 kV/s
VPWM = +3.3V
VPWM = 0V
minimum pulse of 25ns
pulse width on PWM
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
Note 4, 3nF load
current pulse < 20ns
Note 5, ISRC_UG = 2A
current pulse < 20ns
current pulse < 40ns
Note 6, ISRC_UG = 2A
current pulse < 40ns
Symbol
Min
IVCC
IPVCC
IPVCCQ+IVCCQ
4.8
400
IPWM_H
IPWM_L
RPWM
VPWM_SD
VPWM_O
VPWM_H
VPWM_L
SRPWM
tmin_PWM
1.4
1.6
2.6
5
tPDTS_UG
tr_UG
tf_UG
tTSSHD_UG
tD(ON)_UG
tD(OFF)_UG
tPDTS_LG
tr_LG
tf_LG
tTSSHD_LG
tD(ON)_LG
tD(OFF)_LG
ISRC_UG
RSRC_UG
ISNK_UG
RSNK_UG
ISRC_LG
RSRC_LG
ISNK_LG
RSNK_LG
4
4
4
4
-
Typ
6
5.5
1.9
6.2
5.6
650
450
-530
3.5
1.8
40
25
20
15
25
25
25
20
20
15
20
20
20
1
0.9
1.4
0.9
Max
6.7
950
2.2
2.0
1.0
40
45
35
45
1.3
1.3
Units
mA
mA
mA
V
V
mV
μA
μA
kΩ
V
V
V
V
V/µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
A
Ω
A
Ω
A
Ω
A
Ω
PD-3515-001A
4

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PX3515 전자부품, 판매, 대치품
Ordering Information
PX 3515 B D D G - R 4
Prefix
Part Number
4 digits
Version Control
Temperature Range
D: 0°C to +85°C
Package Designator
D: DFN
Quantity per Carrier
4: 4000
Carrier Type
R: Tape-and-Reel
Pb-free Option
G: green (lead-free)
PX3515
Printed in the USA/1002/PDF/TK/PS
This document contains characteristic data and other specifications that are subject to change without notice. Customers are advised to confirm information in this datasheet
prior to using the information herein or placing an order. Primarion does not assume any liability arising from the application or use of any product or circuit described herein,
neither does it convey any license under its patents or any other rights. Primarion products are not designed, intended, or authorized, or warranted to be suitable for use in life-
support applications, devices or systems or other critical applications.
©2008, Primarion, Inc. Primarion is a registered trademark of Primarion, Inc. The Primarion logos are trademarks of Primarion, Inc. *Other names and brands are the property
of their respective owners.
2780 Skypark Drive, Suite 100, Torrance, CA 90505 1-310-602-5500 Fax 1-310-602-5559
PD-3515-001A
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