APW7063
Synchronous Buck PWM and Linear Controller
Features
•
Provide Two Regulated Voltages
- Synchronous Rectified Buck PWM Controller
- Linear Controller
General Description
The APW7063 integrates PWM and linear controller,
as well as the monitoring and protection functions into
a single package. The synchronous PWM cont roller
which drives dual N-channel MOSFETs, which provides
one controlled power outputs with under-voltage and
over-current protect ions . Linear cont roller drives an
ext ernal N-c hannel MOS FE T with under-volt age
protection.
APW7063 provides excellent regulation for output load
variation. An internal 0.8V temperature-compensated
reference voltage is designed to meet the various low
output voltage applications . A PW 7063 inc ludes a
250kHz free-running t riangle-wave osc illator that is
adjust able from below 70KHz to over 800KHz.
A power-on-reset (POR) circuit limits the VCC minimum
opearting s upply voltage to ass ure the c ontroller
working well. Over current protec tion is achieved by
monit oring t he volt age drop ac ros s the low s ide
MOSFET, eliminating the need for a current sensing
resistor and short circuit condition is detected through
the FB pin. The over-current protection t riggers the
soft -start function until the fault events be removed,
but Under-voltage protection will shutdown IC directly.
Pull the COMP pin below 0.4V will shutdown t he
controller, and both gate drive signals will be low.
•
•
Fast Transient Response
- 0~85% Duty Ratio
Excellent Output Voltage Regulation
- 0.8V Internal Reference
-
±1%
Over Line Voltage and Temperature
•
•
•
Over Current Protection
- Sense Low-Side MOSFET’ R
DS(ON)
s
Under Voltage Lockout
Small Converter Size
- 250KHz Free-Running Oscillator
- Programmable From 70kHz to 800kHz
•
•
14-Lead SOIC Package
Lead Free Available (RoHS Compliant)
Applications
•
•
•
•
•
Graphic Cards
Memory Power Supplies
DSL or Cable MODEMs
Set Top Boxes
Low-Voltage Distributed Power Supplies
Pinouts
RT
SS
VREG
FB
COMP
GND
PHASE
1
2
3
4
5
6
7
14
13
12
11
10
9
8
FBL
DRIVE
VCC
LGATE
PGND
BOOT
UGATE
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.
C opyright
©
ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
1
www.anpec.com.tw
APW7063
Ordering and Marking Information
APW7063
Lead Free Code
Handling Code
Temp. Range
Package Code
Package Code
K : SOP - 14
Operating Ambient Temp. Range
C : 0 to 70
°
C
Handling Code
TU : Tube
TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device
XXXXX - Date Code
APW7063 K :
APW7063
XXXXX
No te : ANPEC lea d-fre e p ro ducts co ntain mo ld ing comp oun ds /di e attach m ate ri als and 100 % matte ti n p la te
te rmin atio n fi nish ; wh ich are full y compl iant with Ro HS and compa tibl e wi th both SnPb an d le ad-free sold ieri ng
op era tio ns. AN PEC le ad-free produ cts me et or exceed th e l ead -free req uireme nts of IPC /JEDEC J STD -02 0C
fo r MSL classi ficati on at lea d-fre e p eak re flo w temp era ture.
Block Diagram
VCC
SS
vcc
Power-On
Reset
5.8V
I
SS
10uA
BOOT
Gate Control
vcc
UGATE
I
OCSET
250uA
GND
Soft Start
and
Fault Logic
PHASE
VCC
50%V
REF
:
2
U.V.P
Comparator
O.C.P
Comparator
LGATE
PGND
FBL
50%V
REF
Error Amp
PWM
Comparator
VCC
:
2
VCC
V
REF
Oscillator
Triangle
Wave
Regulator
V
REF
DRIVE
FB
COMP
RT
VREG
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ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
2
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APW7063
Application Circuit
1. Boot-Strap - Use Internal Regulator
C1
5V
12V
1uF
+
C2
470uF
6.3V
25mR
2
1N4148
R1
2R2
VIN
R2
R3
NC
NC
C4
0.1uF
1
1
2
3
4
5
6
7
U1
APW7063
RT
FBL
SS
DRIVE
VREG
VCC
FB
LGATE
COMP
PGND
GND
BOOT
PHASE UGATE
14
13
12
11
10
9
8
C11
/SHDN
+
C9
470uF
6.3V
25mR
C10
4.7uF
R5
3.125KF
1%
R6
820R
0.1uF
8
7
6
5
R9
0R
4
1
2
3
Q3
APM4220
C8
1uF
8
7
6
5
4
1
2
3
L2
2.2uH
R7
100R
R10
2.32KF
1%
C17
0.1uF
+
C12
1000uF
6.3V
30mR
+
C13
1000uF
6.3V
30mR
Q2
APM4220
2.5V
C3
4.7uF
+
C5
470uF
16V
25mR
+
C6
470uF
16V
25mR
L1
VIN
1uH
+
C7
470uF
16V
25mR
D1
12V
Q1
APM3055L
3V3
3
R4
0R
R8
1KF
1%
C16
56pF
D2
SR24
2A/40V
C14
4.7uF
C15
0.01uF
R11
20K
R12
1.07KF
1%
2. Boot-Strap - Use External Power
12V
C1
5V
1uF
+
C3
470uF
6.3V
25mR
2
C2
1uF
R2
2R2
VIN
R1
R3
NC
NC
C7
0.1uF
1
1
2
3
4
5
6
7
U1
APW7063
RT
FBL
SS
DRIVE
VREG
VCC
FB
LGATE
COMP
PGND
GND
BOOT
PHASE UGATE
14
13
12
11
10
9
8
C12
/SHDN
+
C10
470uF
6.3V
25mR
C11
4.7uF
R5
3.125KF
1%
R6
620R
0.1uF
8
7
6
5
R9
0R
4
1
2
3
Q3
APM4220
D1
1N4148
C8
1uF
8
7
6
5
4
1
2
3
L2
2.2uH
R8
100R
R10
2.32KF
1%
C18
0.1uF
+
C13
1000uF
6.3V
30mR
+
C14
1000uF
6.3V
30mR
Q2
APM4220
2.5V
C4
4.7uF
+
C5
470uF
16V
25mR
12V
L1
VIN
1uH
+
C9
470uF
16V
25mR
+
C6
470uF
16V
25mR
Q1
APM3055L
3V3
3
R4
0R
R7
1KF
1%
C17
56pF
D2
SR24
2A/40V
C15
4.7uF
C16
0.01uF
R11
20K
R12
1.07KF
1%
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ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
3
www.anpec.com.tw
APW7063
Absolute Maximum Ratings
Symbol
V
CC
LGATE
DRIVE
UGATE
V
BOOT
VCC to GND
LGATE to GND
DRIVE to GND
UGATE to GND
BOOT to GND
PHASE to GND
Operating Junction Temperature
T
STG
T
SDR
V
ESD
Storage Temperature
Soldering Temperature (10 Seconds)
Minimum ESD Rating
Parameter
Rating
30
30
30
30
30
30
0~150
-65 ~ 150
300
±2
Unit
V
V
V
V
V
V
o
o
o
C
C
C
KV
Recommended Operating Conditions
Symbol
V
CC
V
BOOT
Supply Voltage
Boot Voltage
Parameter
Min.
7
Nom.
12
Max.
19
26
Unit
V
V
Thermal Characteristics
Symbol
θ
JA
Parameter
Junction to Ambient Resistance in free air (SOP-14)
Value
160
Unit
o
C/W
Electrical Characteristics
Unless otherswise specified, these specifications apply over V
CC
= 12V, V
BOOT
= 12V, R
T
= OPE N and
T
A
= 0 ~ 70
o
C. Typlcal values are at T
A
= 25
o
C.
Symbol
SUPPLY CURRENT
I
CC
Parameter
Test Conditions
APW7063
Min
Typ
3
7.0
6.6
7.2
6.8
250
7.4
7.0
280
+15
1.7
Max
Unit
VCC Nominal Supply
Rising V
CC
Threshold
Falling V
CC
Threshold
UGATE and LGATE Open
mA
V
V
kHz
%
V
P-P
POWER-ON-RESET
OSCILLATOR
Free Running Frequency
Total Variation
Ramp Amplitude
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©
ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
R
T
= OPEN, V
CC
= 12V
6KΩ < R
T
to GND < 200KΩ
R
T
= OPEN
4
220
-15
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APW7063
Electrical Characteristics (Cont.)
Unless otherswise specified, these specifications apply over V
CC
= 12V, V
BOOT
= 12V, R
T
= OPE N and
T
A
= 0 ~ 70
o
C. Typlcal values are at T
A
= 25
o
C.
Symbol
REFERENCE
V
REF
Parameter
Test Conditions
APW7063
Min
Typ
0.80
-1
75
0
85
0.1
+1
Max
Unit
Reference Voltage
Reference Voltage Tolerance
V
%
dB
%
uA
PWM EEEOR AMPLIFIER
DC Gain
UGATE Duty Range
FB Input Current
GATE DRIVERS
I
UGATE
R
UGATE
I
LGATE
R
LGATE
T
D
Upper Gate Source
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
Dead Time
V
BOOT
= 12V, V
UGATE
= 6V
I
UGATE
= 0.3A
V
CC
= 12V, V
LGATE
= 6V
I
LGATE
= 0.3A
550
650
800
4
700
4
50
8
8
mA
Ω
mA
Ω
nS
LINEAR REGULATOR
Reference Voltage
Regulation
Output Drive Current
PROTECTION
FB Under Voltage Level
FBL Under Voltage Level
OCSET Source Current
VREG
V
REG
I
OUT
T
SS
I
SS
Output Voltage Accuracy
Output Current Capacity
Internal Soft-Start Interval
Soft-Start Charge Current
Shutdown Threshold
Shutdown Hysteresis
COMP Falling
V
CC
> 12V
V
CC
= 12V
C
SS
= 0uF
8
5.5
6
20
2
10
0.4
50
12
6.5
V
mA
mS
uA
V
mV
50
50
250
%
%
µA
V
DRIVE
= 4V
8
0.8
2
10
12
V
%
mA
SOFT START and SHUTDOWN
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©
ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
5
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