Diodes AP3595 User Manual
Ap3595, Description, Features
AP3595
Document number: DS36749 Rev. 1 - 2
1 of 23
January 2014
© Diodes Incorporated
AP3595
A Product Line of
Diodes Incorporated
DUAL PHASE SYNCHRONOUS RECTIFIED BUCK CONTROLLER
Description
The AP3595 is a compact dual phase synchronous rectified buck
controller specifically designed to deliver high quality output voltage.
This device operates at adjustable operation frequency and is
capable of delivering up to 60A output current.
This controller integrates internal MOSFET drivers that support
12V+12V bootstrapped voltage for high efficiency power conversion.
The bootstrap diode is built-in to simplify the circuit design and
minimize external part count.
The AP3595 features configurable gate driving voltage for maximum
efficiency and optimal performance. The built-in bootstrap diode
simplifies the circuit design and reduces external part count and PCB
space. The output voltage is precisely regulated to the reference input
that is dynamically adjustable by external voltage divider.
Other features include adjustable soft start, adjustable operation
frequency, and quick response to step-load transient. With afore-
mentioned functions, the IC provides customers a compact, high
efficiency, well-protected and cost-effective solution.
This IC is available in U-QFN4040-24 package.
Features
Operate with Single Supply Voltage
Simple Single Loop Voltage Mode Control
12V+12V Bootstrapped Drivers with Internal Bootstrap Diode
Adjustable Over Current Protection by DCR
Current Sensing
Adjustable Current Balancing by R
DS(ON)
Current Sensing
Adjustable Operation Frequency from 50kHz to 1MHz Per Phase
External Compensation
Dynamic Output Voltage Adjustment
Adjustable Soft Start
U-QFN4040-24 Package
RoHS Compliant and 100% Lead (Pb)-free
Totally Lead-free & Fully RoHS Compliant (Note1 & 2)
Halogen and Antimony Free.
“Green” Device (Note 3)
Pin Assignments
(Top View)
L
G
2
P
H
A
S
E
2
H
G
2
B
O
O
T
2
V
ID
R
S
E
T
P
S
I
C
S
P
C
S
N
S
S
E
A
P
F
B
R
T
N
FB
COMP
IOFS
RT/EN
VREF
REFIN
VCC
PVCC
LG1
PHASE1
HG1
BOOT1
Pin 1 Mark
EP
1
10
2
3
4
5
6
7
8
9
11 12
13
14
15
16
17
18
19
20
21
22
23
24
U-QFN4040-24 (FN Package)
Applications
Middle-High End GPU Core Power
High End Desktop PC Memory Core Power
Low Output Voltage, High Power Density
DC-DC Converters
Voltage Regulator Modules
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See
r more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-
free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.