APW7058 [ANPEC]
Synchronous Buck PWM and Linear Controllers; 同步降压PWM和线性控制器
| 型号： | APW7058 |
| 厂家： | 
ANPEC ELECTRONICS COROPRATION |
| 描述： | Synchronous Buck PWM and Linear Controllers |
| 文件： | 总13页 (文件大小：174K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
APW7058
Synchronous Buck PWM and Linear Controllers
Features
General Description
•
Provides Two Regulated Voltages
The APW7058 integrates one synchronous-rectified
Buck PWM controller and one linear controller to pro-
vide two regulated voltages for graphics cards and
other embedded processor applications. The PWM
controller which drives dual N-channel MOSFETs uses
fixed 600kHz frequency, voltage-mode PWM control
and integrates power-on-reset(POR), built-in soft-start,
output under-voltage monitoring and shutdown func-
tions into a single chip. The linear controller which
drives a N-channel MOSFET bypass transistor allows
users to optimize the transient response by external
components. The POR circuit with hysteresis moni-
tors both 5VCC and 12VCC supply voltages to start
up/shutdown the IC at power-on/off. An internal 0.8V
temperature-compensated reference is designed to
meet the low output voltage requirement for further
applications. The built-in soft-start function sets the
soft-start interval to prevent the output voltages from
overshoot as well as limiting the input currents. The
under-voltage protections monitor the voltages at FB
and FB2 for short-circuit protection. The under-volt-
age protections cycle the soft-start function until 3
times of UVP events are happened. Pulling and hold-
ing the FB2 pin above 1.28V to disable the both
controllers.
- One Synchronous-Rectified Buck PWM
Controller
- One Linear Controller
•
•
Low Reference Voltage for Further Applications
- Both Controllers : 0.8V ± 2% Over
Temperature
Both Controllers Drive N-Channel MOSFETs
- PWM Controller Drives Dual N-Channel
MOSFETs
- Linear Controller Drives N-Channel MOSFET
•
Built-in PWM Feedback Compensation
- No Steady-State Error
- Voltage-Mode PWM Control
- Full 0~100% Duty Ratio
- Fast Transient Response
•
•
•
Adjustable Outputs by External Resistor Dividers
Under-Voltage Monitoring on Both Controllers
Small Converter Size
- 600kHz Constant Switching Frequency
- Built-In Soft-Start
- Simple SO-8 Package
•
•
Shutdown Control
Pin Description
Lead Free Available (RoHS Compliant)
Applications
12VCC
UGATE
GND
FB
1
2
3
4
8
7
6
5
FB2
•
•
•
Motherboard
DRIVE2
5VCC
Graphics Cards
LGATE
12V, 5V and 3.3V Inputs DC-DC Converter
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.3 - Mar., 2005
1
www.anpec.com.tw
APW7058
Ordering and Marking Information
Package Code
APW 7058
K : SO P - 8
Operating Junction Tem p. Range
C : 0 to 70°C
Handling Code
TU : Tube
TR : Tape & Reel
Lead Free Code
Lead Free Code
Handling Code
Tem p. Range
Package Code
L : Lead Free Device
Blank : Original Device
APW 7058
XXXXX
APW 7058 K :
XXXXX - Date Code
Notes： ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate
termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering
operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for
MSL classification at lead-free peak reflow temperature.
Block Diagram
12VCC
5VCC
UGATE
Power
On Reset
PWM
Gate
POR
Control
Soft-Start
and Fault
Logic
5VCC
0.5V
UVP1
LGATE
Inhibit /
Soft-Start
UVP2
FB2
COMP
FB
12VCC
0.5V
Error
Amplifier
DRIVE2
VREF
0.8V
Linear
Controller
Shutdown
1.28V
FOSC
Oscillator
600kHz
GND
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
2
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APW7058
Typical Application
R4
2.2
L2
1uH
+12V
+5V
C8
1uF
C1
1uF
VIN1
+3.3V
IN2
C4
4.7uF
V
5VCC
12VCC
C2, C3
2 x 470uF
+3.3V
Q1
R5
0
C10
470uF
L1
1uH
Q3
R9
0
2
UGATE
6
OUT1
V
DRIVE2
R6
0
+1.263V
/10A
R10
27k
D1
4
8
C5, C6
2 x 470uF
LGATE
Q2
U1
C9
33pF
R1
590
APW7058
FB
OUT2
V
7
FB2
+2.5V/3A
R7
2.37k
R8
1.13k
C11
470uF
R3
0
C7
68nF
GND
R2
1.02k
Q1, Q2 : APM2014N UC
D1 : 3A Schcottky Diode
Q3 : APM2055N UC
C2, C3, C5, C6, C10, C11 : 470µF/6.3V, ESR=30mΩ
Absolute Maximum Ratings
Symbol
5VCC
Parameter
5VCC Supply Voltage (5VCC to GND)
12VCC Supply Voltage (12VCC to GND)
UAGTE, DRIVE2 to GND
Rating
Unit
V
-0.3 ~ 7
-0.3 ~ 15
-0.3 ~ 12VCC
-0.3 ~ 5VCC
150
12VCC
V
V
LGATE, FB, FB2 to GND
V
Maximum Junction Temperature
Storage Temperature
oC
oC
oC
KV
TSTG
TSDR
VESD
-65 ~ 150
300
Maximum Soldering Temperature, 10 Seconds
Minimum ESD Rating (Human body model)
2
±
Thermal Characteristics
Symbol
Parameter
Junction-to-Ambient Resistance in free air (SOP-8)
Value
Unit
160
oC/W
θJA
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
3
www.anpec.com.tw
APW7058
Recommended Operating Conditions (Note)
Symbol
5VCC
Parameter
Range
5 ± 5%
Unit
V
5VCC Supply Voltage
12VCC Supply Voltage
12VCC
V
12 ± 10%
0.8 ~ 3.3
3.3/5 ± 5%
0.8 ~ 3.3
3.3/5 ± 5%
0 ~ 70
OUT1
V
Output Voltage of the Buck converter
Input Voltage of the Buck converter
Output Voltage of the Linear Regulator
Input Voltage of the Linear Regulator
Ambient Temperature
V
IN1
V
V
OUT2
V
V
IN2
V
V
T
oC
oC
A
J
T
Junction Temperature
0 ~ 125
Note : Refer to the typical application circuit
Electrical Characteristics
Unless otherwise specified, these specifications apply over 5VCC=5V, 12VCC=12V and TA= 0~70 oC. Typical
values are at TA=25oC.
APW7058
Unit
Symbol
Parameter
Test Conditions
Min Typ Max
SUPPLY CURRENT
CC
I
5VCC Supply Current
12VCC Supply Current
LGATE Open, FB2=DRIVE2
UGATE Open
2.5
2.5
mA
mA
POWER-ON RESET
Rising 5VCC Threshold
CC
12V =12V
4.0 4.2 4.5
3.5 3.7 3.9
9.6 10.3 10.8
9.3 9.7 10.2
V
V
V
V
CC
Falling 5VCC Threshold
Rising 12VCC Threshold
Falling 12VCC Threshold
12V =12V
CC
5V =5V
CC
5V =5V
OSCILLATOR
OSC
F
Free Running Frequency
Ramp Upper Threshold
Ramp Lower Threshold
Ramp Amplitude
550 600 650 kHz
2.85
0.95
1.9
V
V
P-P
V
OSC
∆V
REFERENCE VOLTAGE
REF
V
Reference Voltage
0.8
V
Over Line, Load and
Temperature
System Accuracy
-2
+2
%
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
4
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APW7058
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over 5VCC=5V, 12VCC=12V and TA= 0~70 oC. Typical
values are at TA=25oC.
APW7058
Unit
Symbol
Parameter
Test Conditions
Min Typ Max
BUILT-IN PWM FEEDBACK COMPENSATION
DC Gain
75
10
1
dB
Hz
kHz
%
P
F
F
First Pole Frequency
First Zero Frequency
UGATE Duty Range
FB Input Current
Z
0
100
0.1
µA
PWM CONTROLLER GATE DRIVERS
UGATE Source
UAGTE
UGATE
LGATE
V
V
V
V
=1V
0.6
7.3
0.6
1.8
50
A
Ω
UGATE Sink
=1V
LGATE Source
=1V
=1V
A
LGATE
LGATE Sink
Ω
D
nS
T
Dead Time
LINEAR CONTROLLER
DC Gain
78
dB
L
C =0.5nF
1.6
1
Gain Bandwidth Product
MHz
L
C =1nF
FB Input Current
0.1
µA
mA
mA
V
FB2
FB2
REF
DRIVE2
DRIVE2 Source Current
DRIVE2 Sink Current
V
V
=V -20mV, V
=7V
9.8
2.6
REF
DRIVE2
=V +20mV, V
=3V
DRIVE2 Output High Voltage DRIVE2 Open
DRIVE2 Output Low Voltage DRIVE2 Open
11.7
0.01
V
UNDER-VOLTAGE PROTECTION
FB
UV
FB/FB2 Under-Voltage Level FB or FB2 Falling
0.5
15
V
FB/FB2 Under-Voltage
Hysteresis
mV
SOFT-START AND SHUTDOWN
SS
T
Soft-Start Interval
2
mS
V
FB2 Shutdown Threshold
FB2 Shutdown Hysteresis
FB2 Rising
1.28
30
mV
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
5
www.anpec.com.tw
APW7058
Functional Pin Description
12VCC (Pin 1)
FB2 (Pin 7)
Connect this pin to the output (VOUT2) of the linear
regulator via a proper sized resistor divider. The volt-
age at this pin is regulated to 0.8V and the VOUT2 is
determined using the following formula :
R7
Connect this pin to 12V supply voltage. It provides
bias voltage for the high-side MOSFET driver and the
linear controller. The voltage at this pin is monitored
for Power-On-Reset purposes.
VOUT2=0.8V x (1+
)
R8
UGATE (Pin 2)
where R7 is the resistor connected from VOUT2 to FB2,
and R8 is the resistor connected from FB2 to GND.
This pin is also monitored for under-voltage events.
Pulling and holding FB2 above 1.28V shuts down both
regulators. Releasing FB2 initiates soft-start on both
regulators.
Connect this pin to the gate of the high-side MOSFET.
This pin provides gate drive for the MOSFET.
GND (Pin 3)
Signal and power ground for the IC. Putting vias to
ground planet directly and close to GND pins mini-
mizes noises.
FB (Pin 8)
This pin is the inverting input of the internal error
amplifier. Connect this pin to the output (VOUT1) of
the Buck converter via a proper sized resistor divider
to provide feedback loop of the Buck converter. The
VOUT1 is determined using the following formula :
R1
LGATE (Pin 4)
Connect this pin to the gate of the low-side MOSFET.
This pin provides gate drive for the MOSFET.
5VCC (Pin 5)
VOUT1=0.8V x (1+
)
R2
Connect this pin to a 5V supply voltage via a RC filter
(2.2Ω and 1µF are recommended). This pin pro-
vides the bias for the control circuitry and the low-
side MOSFET driver. The voltage at this pin is moni-
tored for Power-On-Reset purposes.
where R1 is the resistor connected from VOUT1 to FB,
and R2 is the resistor connected from FB to GND.
This pin is also monitored for under-voltage events.
DRIVE2 (Pin 6)
Connect this pin to the gate of an external N-Channel
MOSFET transistor. This pin provides the gate volt-
age for the linear regulator pass transistor. It also
provides a means of compensating the linear control-
ler for applications where the user needs to optimize
the regulator transient response.
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
6
www.anpec.com.tw
APW7058
Typical Characteristics
Reference Voltage
Switching Frequency
vs. Junction Temperature
vs. Junction Temperature
0.816
650
640
630
620
610
600
590
580
570
560
550
0.812
0.808
0.804
0.800
0.796
0.792
0.788
0.784
-50 -25
0
25
50
75 100 125 150
-50
-25
0
25
50
75
100 125 150
Junction Temperature (oC)
Junction Temperature (°C)
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
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APW7058
Operating Waveforms (Refer to the typical application circuit)
1.VOUT1 Load Transient Response : IOUT = 0A -> 10A -> 0A
- IOUT1 slew rate = ±10A/µS
IOUT = 10A -> 0A
IOUT = 0A -> 10A
IOUT = 0A -> 10A -> 0A
VOUT1
VOUT1
VOUT1
VUGATE
VUGATE
10A
IOUT1
IOUT1
0A
IOUT1
Ch1 : VOUT1, 100mV/Div, DC,
Offset = 1.25V
Ch1 : VOUT1, 100mV/Div, DC,
Offset = 1.25V
Ch1 : VOUT1, 100mV/Div, DC,
Offset = 1.25V
Ch2 : VUGATE, 10V/Div, DC
Ax1 : IOUT1, 5A/Div
Time : 5µS/Div
Ax1 : IOUT1, 5A/Div
Time : 100µS/Div
BW = 20MHz
Ch2 : VUGATE, 10V/Div, DC
Ax1 : IOUT1, 5A/Div
Time : 5µS/Div
BW = 20MHz
BW = 20MHz
2.VOUT2 Load Transient Response : IOUT = 0.2A -> 3A -> 0.2A
- IOUT2 slew rate = ±3A/µS
IOUT = 0.2A -> 3A
IOUT = 3A -> 0.2A
IOUT = 0.2A -> 3A -> 0.2A
VOUT2
VOUT2
VOUT2
3A
IOUT2
IOUT2
IOUT2
0.2A
Ch1 : VOUT2, 50mV/Div, DC,
Offset = 2.50V
Ch1 : VOUT2, 50mV/Div, DC,
Offset = 2.50V
Ch1 : VOUT2, 50mV/Div, DC,
Offset = 2.50V
Ax1 : IOUT2, 1A/Div
Time : 1µS/Div
Ax1 : IOUT2, 1A/Div
Time : 50µS/Div
Ax1 : IOUT2, 1A/Div
Time : 1µS/Div
BW = 20MHz
BW = 20MHz
BW = 20MHz
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
8
www.anpec.com.tw
APW7058
Operating Waveforms (Cont.)
3. Powering ON / OFF
Soft-start at Powering ON
Powering OFF
+12V
+5V
+12V
+5V
VOUT2
VOUT1
VOUT2
VOUT1
Ch1 : +5V, 1V/Div, DC
Ch2 : +12V, 2V/Div, DC
Ch3 : VOUT1, 1V/Div, DC
Ch4 : VOUT2, 1V/Div, DC
Time : 1mS/Div
Ch1 : +5V, 1V/Div, DC
Ch2 : +12V, 2V/Div, DC
Ch3 : VOUT1, 1V/Div, DC
Ch4 : VOUT2, 1V/Div, DC
Time : 5mS/Div
BW = 20MHz
BW = 20MHz
4. UGATE and LGATE
UGATE Rising
UGATE Falling
IOUT=10A
IOUT=10A
VUGATE
VUGATE
VLGATE
VLGATE
Ch1 : VUGATE, 2V/Div, DC
Ch2 : VLGATE, 2V/Div, DC
Time : 50nS/Div
Ch1 : VUGATE, 2V/Div, DC
Ch2 : VLGATE, 2V/Div, DC
Time : 50nS/Div
BW = 500MHz
BW = 500MHz
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
9
www.anpec.com.tw
APW7058
Packaging Information
SOP-8 pin ( Reference JEDEC Registration MS-012)
E
H
e1
e2
D
A1
A
1
L
0.004max.
Millimeters
Inches
Dim
Min.
Max.
Min.
Max.
0.069
0.010
0.197
0.157
0.244
0.050
0.020
A
A1
D
1.35
0.10
4.80
3.80
5.80
0.40
0.33
1.75
0.25
5.00
4.00
6.20
1.27
0.51
0.053
0.004
0.189
0.150
0.228
0.016
0.013
E
H
L
e1
e2
1.27BSC
0.50BSC
1
8
8
°
φ
°
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
10
www.anpec.com.tw
APW7058
Physical Specifications
Terminal Material
Lead Solderability
Packaging
Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn
Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
2500 devices per reel
Reflow Condition (IR/Convection or VPR Reflow)
tp
TP
Critical Zone
TL to TP
Ramp-up
TL
tL
Tsmax
Tsmin
Ramp-down
ts
Preheat
25
°
t 25 C to Peak
Time
Classificatin Reflow Profiles
Sn-Pb Eutectic Assembly
Large Body Small Body
Pb-Free Assembly
Profile Feature
Large Body
Small Body
Average ramp-up rate
(TL to TP)
3°C/second max.
3°C/second max.
Preheat
- Temperature Min (Tsmin)
- Temperature Mix (Tsmax)
- Time (min to max)(ts)
100°C
150°C
60-120 seconds
150°C
200°C
60-180 seconds
Tsmax to TL
3°C/second max
- Ramp-up Rate
Tsmax to TL
- Temperature(TL)
- Time (tL)
183°C
60-150 seconds
217°C
60-150 seconds
Peak Temperature(Tp)
225 +0/-5°C
240 +0/-5°C
245 +0/-5°C
250 +0/-5°C
Time within 5°C of actual Peak
Temperature(tp)
10-30 seconds
10-30 seconds
10-30 seconds 20-40 seconds
Ramp-down Rate
Time 25°C to Peak Temperature
6°C/second max.
6 minutes max.
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.3 - Mar., 2005
11
www.anpec.com.tw
APW7058
Reliability test program
Test item
SOLDERABILITY
HOLT
PCT
TST
Method
Description
MIL-STD-883D-2003
MIL-STD-883D-1005.7
JESD-22-B, A102
MIL-STD-883D-1011.9
MIL-STD-883D-3015.7
JESD 78
245 C , 5 SEC
°
1000 Hrs Bias @ 125 C
°
168 Hrs, 100 % RH , 121 C
°
-65 C ~ 150 C, 200 Cycles
VHBM > 2KV, VMM > 200V
10ms , Itr > 100mA
°
°
ESD
Latch-Up
Carrier Tape & Reel Dimension
t
D
P
Po
E
P1
F
W
Ao
D1
Ko
T2
J
C
A
B
T1
A
B
C
J
T1
T2
W
12 + 0.3
- 0.1
P
E
Application
SOP-8
12.75 +
0.1 5
2 + 0.5 12.4 +0.2
330 1
62 1.5
2 0.2
±
8 0.1
±
1.75 0.1
±
±
±
F
D
D1
1.55+ 0.25
Po P1
Ao
Bo
Ko
t
Application
SOP-8
5.5 0.1 1.55 0.1
4.0 0.1 2.0 0.1 6.4 0.1 5.2 0.1 2.1 0.1 0.3 0.013
± ± ± ± ± ±
±
±
(mm)
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
12
www.anpec.com.tw
APW7058
Cover Tape Dimensions
Application
SOP- 8
Carrier Width
Cover Tape Width
Devices Per Reel
12
9.3
2500
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.3 - Mar., 2005
13
www.anpec.com.tw
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