Anpec APW703612KC-TU Advanced dual pwm power controller Datasheet

APW7036
Advanced Dual PWM Power Controller
Features
General Description
•
The APW7036 provides complete power control and
protection for two DC-DC converter optimized in VGA
Card applications. It integrates two PWM controllers ,
as well as the monitoring and protection function into
a single package.
The APW7036 provides simple , single feedback loop
, voltage mode control with fast transient response.
The output voltage of the SYNC converter can be precisely regulated to as low as VREF (1.25V , 1.5V , 1.
8V and 2.05V) , with a maximum tolerence of ±1.0%
over temperature.
The APW7036 can provides in excess of 14A of output current for an on-board DC/DC converter. It can
monitors all the output voltage , and a single Power
Good signal is issued when the SYNC output is within
±10% of the VREF setting and the ASYNC output levels is above under-voltage levels. Additional built-in
over-voltage protection for the SYNC output uses the
lower MOSFET to prevent output voltage above 115%
of the VREF setting. The PWM controller’s over-current function monitor the output current by sensing
the voltage drop across the upper MOSFET’s RDS(ON) ,
eliminating the need for a current sensing resistor .
2 Regulated Voltage are provided
− SYNC Switching Power Internal Reference
Voltage (1.25V , 1.5V , 1.8V and 2.05V)
− ASYNC Switching Power Internal Reference
Voltage (1.5V)
•
Simple Single-Loop Control Design
− Voltage-Mode PWM Control
•
Excellent Output Voltage Regulation
− SYNC Output : ±1% Over Temperature
− ASYNC Output : ±3% Over Temperature
•
Fast Transient Response
− High-Bandwidth Error Amplifier
− 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
•
Pin Description
UGATE
20Pin , SOIC Package
Applications
•
•
High Power 5V to 2.5 or 3.3V DC-DC Regulator
VGA Card Power Regulation
1
20
PHASE1
VCC
2
19
LGATE
GATE
3
18
PGND
PHASE2
4
17
OCSET1
PGOOD
5
16
VSEN
OCSET2
6
15
FB1
FB2
7
14
COMP
SS
8
13
NC
FAULT/RT
9
12
GND
10
11
VAUX
NC
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.1 - May, 2001
1
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APW7036
Ordering Information
Voltage Code
12 : 1.25V
15 : 1.50V
18 : 1.80V
20 : 2.05V
Package Code
K : SO P-20
Tem p. Range
C : 0 to 70 ° C
Handling Code
TU : Tube
TR : Tape & Reel
Lead Free Code
L : Lead Free Device
Blank : O riginal Device
APW 7036
Lead Free Code
Handling Code
Tem p. Range
Package Code
Voltage Code
Block Diagram
VSEN
OCSET1
VCC
110%
PGOOD
OCSET2
200uA
VCC
GATE
90%
DRIVE2
POR
OC2
VAUX
115%
PHASE2
200uA
VCC
INHIBIT
GATE
CONTROL
FAULT
PWM2
DRIVE1
0V
SOFT-START
AND FAULT
LOGIC
UGATE
OC1
PHASE1
INHIBIT
FB2
GATE
CONTROL
ERROR
AMP2
1.5V
ERROR
AMP1
PWM1
VCC
LGATE
VCC
LOWER
DRIVE
28uA
PGND
V REF
OSCILLATOR
1.05V
GND
4.5V
FAULT
SS
FB1
COMP
Absolute Maximum Ratings
Symbol
VCC
VI , VO
Parameter
Supply Voltage
Input , Output or I/O Voltage
Rating
15
Unit
V
GND -0.3 V to V12 +0.3
V
0 to 70
°C
TA
Operating Ambient Temperature Range
TJ
Junction Temperature Range
0 to 125
°C
TSTG
Storage Temperature Range
-65 to +150
°C
300 ,10 seconds
°C
TS
Soldering Temperature
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
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APW7036
Thermal Characteristics
Symbol
R θJA
Parameter
Thermal Resistance in Free Air
SOIC
SOIC (with 3in2 of Copper)
Value
Unit
75
65
°C/W
Electrical Characteristics
(Recommended operating conditions , Unless otherwise noted) Refer to Block and Simplified Power System
Diagrams , and Typical Application Schematic
APW7036
Unit
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
VCC Supply Current
ICC
Nominal Supply Current
UGATE , LGATE , GATE ,
open
9
mA
Power-on Reset
Rising VCC Threshold
Falling VCC Threshold
Rising VAUX Threshold
VAUX Threshold Hysteresis
Rising VOCSET Threshold
Oscillator
FOCS
Free Running Frequency
Ramp Amplitude
Vocset=4.5V
Vocset=4.5V
Vocset=4.5V
Vocset=4.5V
RT= Open
RT= Open
∆VOSC
Switching Controller Reference Voltage
VREF Reference Voltage APW7036-12
APW7036-15
APW7036-18
APW7036-20
Reference Voltage accuracy
VFB2
Reference Voltage
Reference Voltage accuracy
Synchronous PWM Controller Error Amplifier
DC Gain
GBWP Gain-Bandwidth Product
SR
Slew Rate
COMP=10pF
PWM Controllers Gate Drivers
IUGATE UGATE1,GATE Source
RUGATE
UGATE1,GATE Sink
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
VCC=12V, VUGATE 1,GATE=6V
VUGATE1,GATE =1V
3
10.4
V
V
V
V
V
215
kHz
VP-P
8.2
2.5
0.5
1.26
185
200
1.9
1.25
1.50
1.80
2.05
-1.0
V
+1.0
1.5
-3.0
+3.0
88
15
6
%
V
%
dB
MHz
V/µs
1
A
3.5
Ω
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APW7036
Electrical Characteristics Cont.
Symbol
Parameter
PWM Controllers Gate Drivers
ILGATE LGATE Source
RLGATE LGATE Sink
Protection
VSEN Over-Voltage (VSEN/VREF)
IOVP
FAULT Souring Current
IOCSET OCSET1,2 Current Source
ISS
Soft Start Current
Power Good
VSEN Upper Threshold
(VSEN/VREF)
VSEN Under Voltage (VSEN/VREF)
VSEN Hysteresis
(VSEN/VREF)
VPGOOD PGOOD Voltage Low
Test Conditions
APW7036
Min.
Typ.
Max.
VCC=12V, VLGATE=1V
VLGATE= 1V
VSEN Rising
VFAULT/RT=2.0V
VOCSET= 4.5VDC
1
170
115
8.5
200
28
Unit
A
3
Ω
120
%
mA
230
µA
µA
VSEN1 Rising
110
%
VSEN1 Rising
94
%
Upper /Lower Threshold
2
%
IPGOOD= -4mA
0.8
V
Functional Pin Description
converter’s MOSFET source. This pin is used to monitor the voltage drop across the MOSFET for over-current protection.
UGATE (Pin 1)
Connect UGATE pin to the synchronous PWM
converter’s upper MOSFET gate. This pin provides
the gate drive for the upper MOSFET.
PGOOD (Pin 5)
VCC (Pin 2)
PGOOD is an open collector output used to indicate
the status of the output voltages. This pin is pulled
low when the synchronous regulator output is not within
10% of the reference voltage or the other output is
below under-voltage thresholds.
Provide a 12V bias supply for the IC to this pin. This
pin also provides the gate bias charge for all the
MOSFETs controlled by the IC. The voltage at this
pin is monitored for Power-On Reset purposes.
NC (Pin 10, 13)
GATE (Pin 3)
No Connection.
Connect GATE pin to the standard BUCK PWM
converter’s MOSFET gate. This pin provides the gate
drive for the MOSFET.
OCSET1 , 2 (Pin 17 , 6)
Connect a resistor (ROCSET ) from this pin to the drain
of the PWM converter’s MOSFET. ROCSET , an internal
200µA current source (IOCSET ) , and the MOSFET’s
on-resistance(rDS(ON)) set the converter over-current
PHASE2 (Pin 4)
Connect the PHASE2 pin to the standard BUCK PWM
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
4
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APW7036
Functional Pin Description Cont.
(OC) trip point according to the following equation:
synchronous PWM regulator error amplifier. The FB1
pin is the inverting input of the error amplifier. Similarly , the COMP pin is the error amplifier output. These
pins are used to compensate the voltage-mode control feedback loop of the synchronous PWM converter.
IOCSET * ROCSET
I
=
PEAK
rDS(ON)
An over-current trip cycles the soft-start function.
VSEN (Pin 16)
FB2 (Pin 7)
This pin is connected to the synchronous PWM
converters’s output voltage. The PGOOD and OVP
comparator circuits use this signal to report output
voltage status and for over-voltage protection.
This pin provides the feedback for the non-synchronous switching regulator. A resistor driver is connected from this pin to regulator output and GND that
sets the output voltage. The value of the resistor connected from regulator output to FB2 must be less than
150Ω .
PGND (Pin 18)
This is the power ground connection. Tie the synchronous PWM converter’s lower MOSFET source to
this pin.
SS (Pin 8)
Connect a capacitor from this pin to ground. This
capacitor , along with an internal 28µA current source
, sets the soft-start interval of the converter.
LGATE (Pin19)
Connect LGATE to the synchronous PWM converter’s
lower MOSFET gate. This pin provides the gate drive
for the lower MOSFET.
FAULT / RT (Pin 9)
This pin provides oscillator switching frequency
adjustment. By placing a resistor (RT ) from this pin
to GND , the nominal 200kHz switching frequency is
increased. Conversely , connecting a pull-up resistor
(RT ) from this pin to VCC reduces the switching
frequency.
Nominally , the voltage at this pin is 1.26V. In the
event of an over-voltage or over-current condition , this
pin is internally pulled to VCC.
PHASE1 (Pin 20)
Connect the PHASE1 pin to the synchronous PWM
converter’s upper MOSFET source. This pin is used
to monitor the voltage drop across the upper MOSFET
for over-current protection.
VAUX (Pin 11)
The +3.3V input voltage at this pin is monitored for
power-on reset (POR) purposes.
GND (Pin 12)
Signal ground for the IC. All voltage levels are measured with respect to this pin.
COMP and FB1 (Pins 14 , and 15)
COMP and FB1 are the available external pins of the
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
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APW7036
Simplified Power System Diagram
+ 5 V IN
Q1
Q3
V OUT2
Standard
Buck
PWM
Controller
Synchronous
PWM
Controller
V OUT1
Q2
APW7036
Typical Characteristics
R1
10R
C2
220pF
L1
1uH
+12V
+5V
C1
1uF
R3
5.1R
C8
220pF
+5V
R12
1.2K
C10
330uF
Q2
APM9410
VOUT2
(3.3V)
R13
5.1R
L3
7.8uH
R9
120RF
C11
330uF
D1
FM5800
C9
0.1uF
1
UGATE
2
VCC
PHASE1
20
LGATE
19
3
GATE
PGND
18
4
PHASE2
OCSET1
17
5
PGOOD
VSEN
16
6
OCSET2
7
FB2
8
SS
9
FAULT
10
NC
FB1
15
COMP
14
NC
13
GND
12
VAUX
11
VOUT1
(2.5V)
L2
7.8uH
R4
5.1R
Q1B
APM7313
C6
10pF
C2
2700pF
+5V
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
C3
330uF
Q1A
APM7313
C4
330uF
R5
67RF
C5
330uF
R7
3K
APW7036-15
R11
750
R10
100RF
R2
1.2K
LP1
LED
R8
150K
R6
100RF
+3.3V
6
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APW7036
Typical Characteristics
10000
RT ( kΩ )
1000
to +12V
RT pull up
100
RT pull down to GND
10
1
50
150
250
350
450
550
650
750
Switching Frequency ( kHz )
1.0%
0.8%
0.8%
VFB2 Reference Voltage deviation (%)
1.0%
0.6%
VREF Voltage deviation (%)
0.4%
0.2%
0.0%
-0.2%
-0.4%
-0.6%
-0.8%
-1.0%
0
10
20
30
40
50
60
70
80
90
100
0.6%
0.4%
0.2%
0.0%
-0.2%
-0.4%
-0.6%
-0.8%
-1.0%
0
Junction Temperature (oC)
Note : The Referance Voltage(VREF ) Deviation is
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
10
20
30
40
50
60
70
80
90
100
Junction Temperature (oC)
VREF(TJ ) - VREF(25 oC)
x 100%
VREF (25oC)
7
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APW7036
Package Information
SO – 300mil ( Reference JEDEC Registration MS-013)
D
h*45
C
H
GAUGE
PLANE
E
1
2
3
A
Dim
Millimeters
L
A1
B
e
Variations
Dim
Inches
1
Variations
Min.
Max.
Variations
Min.
Max.
Min.
Max.
Variations
Min.
Max.
2.65
SO-20
12.60
13.0
A
0.093
0.1043
SO-20
0.496
0.512
A1
2.35
0.10
0.30
SO-24
15.20
15.60
A1
0.004
0.0120
SO-24
0.599
0.614
B
0.33
0.51
SO-28
17.70
18.11
B
0.013
0.020
SO-28
0.697
0.713
0.23
0.32
A
C
D
E
e
H
C
0.0091 0.0125
See variations
7.40
7.60
D
See variations
E
0.2914 0.2992
1.27BSC
10
10.65
e
0.050BSC
H
0.394
0.419
h
0.010
0.029
1.27
L
0.016
0.050
8°
φ1
0°
8°
h
0.25
0.75
L
0.40
φ1
0°
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
8
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APW7036
Physical Specifications
Terminal Material
Lead Solderability
Packaging
Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb)
Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
1000 devices per reel
Reflow Condition
(IR/Convection or VPR Reflow)
tp
TP
C ritical Z one
T L to T P
T e m p e ra tu re
R am p-up
TL
tL
T sm ax
T sm in
R am p-down
ts
Preheat
25
t 25 °C to Peak
T im e
Classificatin Reflow Profiles
Profile Feature
Sn-Pb Eutectic Assembly
Large Body
Small Body
Average ramp-up rate
3°C/second max.
(TL to TP)
Preheat
- Temperature Min (Tsmin)
100°C
- Temperature Mix (Tsmax)
150°C
- Time (min to max)(ts)
60-120 seconds
Tsmax to TL
- Ramp-up Rate
Tsmax to TL
- Temperature(TL)
183°C
- Time (tL)
60-150 seconds
Peak Temperature(Tp)
225 +0/-5°C
240 +0/-5°C
Time within 5°C of actual Peak
10-30 seconds
10-30 seconds
Temperature(tp)
Ramp-down Rate
6°C/second max.
6 minutes max.
Time 25°C to Peak Temperature
Pb-Free Assembly
Large Body
Small Body
3°C/second max.
150°C
200°C
60-180 seconds
3°C/second max
217°C
60-150 seconds
245 +0/-5°C
250 +0/-5°C
10-30 seconds
20-40 seconds
6°C/second max.
8 minutes max.
Note: All temperatures refer to topside of the package. Measured on the body surface.
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
9
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APW7036
Reliability test program
Test item
Method
Description
SOLDERABILITY
MIL-STD-883D-2003
245°C , 5 SEC
HOLT
MIL-STD-883D-1005.7
1000 Hrs Bias @ 125 °C
PCT
JESD-22-B, A102
168 Hrs, 100 % RH , 121°C
TST
MIL-STD-883D-1011.9
-65°C ~ 150°C, 200 Cycles
ESD
MIL-STD-883D-3015.7
VHBM > 2KV, VMM > 200V
Latch-Up
JESD 78
10ms , Itr > 100mA
Tape & Reel Dimensions
t
D
P
Po
E
P1
Bo
F
W
Ko
Ao
D1
T2
J
C
A
B
T1
SOP-20
330±1
62 ± 1.5
Application
F
D
C
12.75
±0.15
D1
SOP-20
11.5 ± 0.1
1.5+0.1
1.5+0.25
Application
A
B
J
T1
T2
W
2 + 0.6
24.4 +0.2
2± 0.2
Po
P1
Ao
24 + 0.3
- 0.1
Bo
4.0 ± 0.1
2.0 ± 0.1
8.2 ± 0.1
13± 0.1
P
E
12± 0.1
1.75± 0.1
Ko
t
2.5± 0.1 0.35±0.013
(mm)
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
10
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APW7036
Cover Tape Dimensions
Application
SOP- 20
Carrier Width
24
Cover Tape Width
21.3
Devices Per Reel
1000
Customer Service
Anpec Electronics Corp.
Head Office :
5F, No. 2 Li-Hsin Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
7F, No. 137, Lane 235, Pac Chiao Rd.,
Hsin Tien City, Taipei Hsien, Taiwan, R. O. C.
Tel : 886-2-89191368
Fax : 886-2-89191369
Copyright  ANPEC Electronics Corp.
Rev. A.1 - May, 2001
11
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