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Anpec Electronics Coropration

APW7026 Datasheet Preview

APW7026 Datasheet

Advanced PWM and Dual Linear Power Controllers

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APW7026
Features
Advanced PWM and Dual Linear Power Control
General Description
3 Regulated Voltage are provided
SYNC Switching Power for VTT(1.25V)
ASYNC Switching Power for NVVDD(2.05V)
Linear Regulator for FBVDDQ(2.5V)
www.DataSheet4U.com Simple Single-Loop Control Design
Voltage-Mode PWM Control
Excellent Output Voltage Regulation
VTT Output:: ±1% Over Temperature
NVVDD Output:: ±2% Over Temperature
FBVDDQ Output:±2.5% Over Temperature
Fast Transient Response
On-Chip Feedback Compensation
Full 0% to 100% Duty Ratio
Power-Good Output Voltage Monitor
Over-Voltage and Over-Current Fault Monitors
Small Converter Size
Constant Frequency Operation(200kHz)
Programmable Oscillator from 50kHz to
800KHz
Reduce External Component Count
Applications
VGA Card Power Regulation
The APW7026 Provides the power control and
protection for three output voltages in VGA Card
applications. It integrates two PWM controllers, one
linear controller as well as the monitoring and
protection functions into a single package. One PWM
controller (PWM1) regulates the termination voltage
VTT(1.25V) with a synchronous-rectified buck
converter. The second PWM controller (PWM2)
supplies the Core power NVVDD ( 2.05V ) with a
standard buck converter . The linear controller
regulates 2.5V power for FBVDDQ.
The APW7026 can monitor all the output voltages
(VTT ,NVVDD,FBVDDQ) and a single power good
signal is issued when the VTT is within ± 10% of
the reference voltage (VREF1) and the other levels
are above its lower power good threshold voltage.
Additional built-in overvoltage protection (OVP) will
be started when the VTT output is above 118% of
the VREF1.The OVP function will shutdown the upper
MOSFET and turn on the lower MOSFET
until the over-voltage is disappeared. The PWM
controllers over-current function monitors the out-
put current by sensing the voltage drop across the
upper MOSFET rDS(ON), eliminating the need for a
current sensing resistor.
Pin Description
UGATE 1 1
VCC 2
UGATE 2 3
PHASE2 4
PG OOD 5
OCSET2 6
FB2 7
V5 8
SS 9
FAULT/RT 10
20 PHASE1
19 LGATE 1
18 PG ND
17 OCSET1
16 VSE N1
15 FB1
14 FB3
13 GATE
12 GND
11 V3.3
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright ANPEC Electronics Corp.
Rev.a.2 - Sep., 2001
1
www.anpec.com.tw




Anpec Electronics Coropration

APW7026 Datasheet Preview

APW7026 Datasheet

Advanced PWM and Dual Linear Power Controllers

No Preview Available !

APW7026
Ordering information
APW 7026
Blockwww.DataSheet4U.com Diagram
Lead Free C ode
H andling C ode
Tem p. Range
Package Code
V oltage C ode
V oltage C ode
12 : 1.25V
Package Code
K : SOP - 20
Tem p. Range
C : 0 to 70° C
H andling C ode
TU : Tube
TR : Tape & Reel
Lead Free C ode
L : Lead Free D evice
B lank : O riginal D evice
FB3
GATE
OCSET2
UGATE2
PHASE2
FB2
V REF3
1 .2 6 V
LUV
0 .3 V
VCC
200uA
D R IV E2
OC2
THERMAL
PR O TEC TIO N
GATE
CONTROL
IN H IB IT
PW M 2
FAULT
S O F T -S T A R T
AND FAULT
LO G IC
0V
V REF2
2 .0 V
ERROR
AM P2
V 3.3
2 .5 V
4 .1 V
5V
O S C ILL ATO R
23K
4 .6 V
V REF1
VSEN1
110%
90%
OCSET1
VCC
V5
PO W ER-O N
RESET
PGOOD
118%
200uA
OC1
ERROR
AM P1
D R IV E1
VCC
IN H IB IT
PW M 1
GATE
CONTROL
VCC
LOW ER
D R IV E
UGATE1
PHASE1
LG AT E1
PGND
GND
FAULT/R T
SS
Absolute Maximum Ratings
Symbol
VCC
VI , VO
TA
TJ
TS TG
TS
Parameter
Supply Voltage
Input , Output or I/O Voltage
Operating Ambient Temperature
Junction Temperature
Storage Temperature
Soldering Temperature
Copyright ANPEC Electronics Corp.
Rev. A.2 - Sep., 2001
2
FB1
Rating
15
GND -0.3 V to VCC +0.3
Range 0 to 70
Range 0 to 125
Range -65 to +150
300 ,10 seconds
Unit
V
V
oC
oC
oC
oC
www.anpec.com.tw


Part Number APW7026
Description Advanced PWM and Dual Linear Power Controllers
Maker Anpec Electronics Coropration
Total Page 11 Pages
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