Transcript
Advanced Power Electronics Corp.
APE1920
680K/1.2MHz, HIGH VOLTAGE, BOOST CONVERTER FEATURES
DESCRIPTION The APE1920 is a high performance, high efficiency step up DC-DC Converter with integrated 3A. The APE1920 converter input voltage ranging from 2.6 to 5.5V. The Output voltage can be set up to 27V. The selectable frequency of 680 kHz and 1.2 MHz allows the use of small external inductors and capacitors and provides fast transient response. Current mode control with external compensation network makes it easy to stabilize the system and keep maximum flexibility. Programmable soft start function minimizes impact on the input power system. Internal power MOSFET with very low RDS (ON) provides high efficiency. The APE1920 automatically transits from PWM to PFM during light load condition further increasing efficiency. The converter also provides protection functions such as Current Limit and Thermal shutdown. The APE1920 is available in space-saving MESOP-10, MESOP-8, TDFN 3x3-10L and ESOP-8 packages.
Operating Voltage from 2.6V to 5.5V Adjustable Output Voltage Range up to 27V Up to 3A Output Switch Current 680K/1.2MHz Selectable Switching Frequency Programmable Soft-start Function External Compensation Network Current Limit and Thermal Shutdown Protection Under Voltage Lockout < 1µA Shutdown Current Available in the Pb-Free MESOP-10, MESOP-8, TDFN 3x3-10L and ESOP-8 Packages
TYPICAL APPLICATION 1.FREQ=High (Frequency=1.2MHz) (MESOP-10 and TDFN 3x3-10L)
VIN=5V
4.7uH
R3 4.7~100 C2 2*10uF
C5
0.1uF
1nF
C1
VCC FREQ
LX LX
EN
FB
R4
C3
B340A
U1
1M
C7 100pF
SS C6
220pF
PGND SGND
COMP R6 100K
VOUT=12V
D1
L1
R2 130K C3 R8 15K
3*10uF
APE1920
10nF
R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN 4.5V, R3=10 VIN > 4.5V, R3= 100
Data and specifications subject to change without notice
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Advanced Power Electronics Corp.
APE1920
TYPICAL APPLICATION (2) FREQ=Low (Frequency=680KHz) (MESOP-10 and TDFN 3x3-10L) VIN=5V
D1 B340A
L1 6.8uH
R3 4.7~100
2*10uF C3
1M C5
R7 10K
1nF
0.1uF
R6 56K
EN
LX LX
FREQ
FB
COMP
PGND SGND
SS C6
C7
R2 130K 220pF C1
U1 VCC
R4
C2
VOUT=12V
C3 R8 15K
3*10uF
APE1920
10nF
150pF
R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN 4.5V, R3= 10 VIN > 4.5V, R3=100
(3) FREQ=High (Frequency=1.2MHz) (ESOP-8/MESOP-8) VIN=5V
4.7uH R3 4.7~100 C2 2*10uF
R4
EN
1M
C4
C8
0.1uF
1nF
B340A R2 C1 130K
U1 VCC FREQ
R6 100K
COMP APE1920
C7 100pF
VOUT=12V
D1
L1
220pF
LX FB
C3
GND
R8 15K
SS
3*10uF
C6 10nF
R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K 4.5V, R3=10 VIN VIN > 4.5V, R3=100
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Advanced Power Electronics Corp.
APE1920
TYPICAL APPLICATION (4) FREQ=Low (Frequency=680KHz) (ESOP-8/MESOP-8) VIN=5V
D1 B340A
L1
VOUT=12V
6.8uH R3 4.7~100
VCC FREQ
C2 2*10uF C4 0.1uF
R2 130K 220pF C1
U1
R4
EN
1M C8
R7 10K
1nF
R6 100K
LX FB
C3
GND
COMP APE1920
R8 15K
SS
3*10uF
C6 10nF
C7 100pF
R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN 4.5V, R3=10 VIN > 4.5V, R3= 100
ORDERING / PACKAGE INFORMATION APE1920X
COMP 1 FB 2
Package Type MP : ESOP-8 MM8 : MESOP-8 MM10 : MESOP-10 TGN3 : TDFN 3x3-10L
3
EN SGND 4
(SGND)
SS
9
FREQ VCC 7 LX 6 LX 8
TDFN 3x3-10L TOP View
( Top View ) SS
COMP
1
10
FB
2
9
FREQ
EN
3
8
VCC
SGND
4
7
LX
PGND
5
6
LX
MESOP-10
Exposed Pad
PGND 5
( Top view )
Exposed Pad (SGND)
10
COMP
1
FB
2
EN
3
GND
4
Exposed Pad (GND)
8
SS
7
FREQ
6
VCC
5
LX
MESOP-8 / ESOP-8
3
Advanced Power Electronics Corp.
APE1920
ABSOLUTE MAXIMUM RATINGS (at TA=25°C) VCC Pin Voltage (VCC) ------------------------------------- GND - 0.3 to GND + 6V EN, FREQ,COMP,FB,SS, Pin Voltage ---------------- GND - 0.3 to VCC + 0.3V LX Pin Voltage(VLX) ---------------------------------------
30V
Power Dissipation(PD) ------------------------------------- ( TJ-TA ) / RthjamW Storage Temperature Range(TST) ---------------------
-65°C To 150°C
Operating Junction Temperature Range(TOP) ------
-40 to +125oC
Thermal Resistance from Junction to Case ESOP-8
o 15 C/W
MESOP-8
o 30 C/W
MESOP-10
30oC/W 20oC/W
TDFN 3x3-10L
Thermal Resistance from Junction to Ambient ESOP-8
40oC/W
MESOP-8
o 80 C/W
MESOP-10
80oC/W
TDFN 3x3-10L
55oC/W
Note: Rthja is measured with the PCB copper area of approximately 1.5 in2(Multi-layer). That copper area needs connect to exposed pad.
ELECTRICAL SPECIFICATIONS (VIN=5V, VOUT=12V, VEN=VIN, TA=25oC, unless otherwise noted) Parameter Input Voltage Range
SYM VCC
Under Voltage Lockout
UVLO
TEST CONDITION Rising
UVLO Hysteresis
MIN 2.6
TYP -
MAX 5.5
UNITS
-
2.35
2.6
V
-
-150
-
mV V
V
Step-Up Voltage Adjust Range
VOUT
VCC+0.5
-
27
Operating Quiescent Current
ICCQ
IOUT= 0mA, VFB=1.5V
-
150
250
A
Shutdown Current
ISD
VEN=0V
-
0.1
1
A
Feedback Voltage
VFB
FB Input Leakage Current
IFB-LKG
VFB = 1.5V
1.219
1.238 1.257
V
-100
0.01
nA
100
Line Regulation
VIN=2.6 to 5.5V, IOUT=20mA
-
0.2
-
%
Load Regulation
VIN=5V, IOUT= 1mA to 0.7A
-
0.3
-
%
FREQ=High
900
1200
1500
FREQ=Low
500
680
850
Oscillator Frequency
FOSC
FREQ High-level Input Voltage
VFQ-IH
2
-
-
FREQ Low-level Input Voltage
VFQ-IL
-
-
0.5
FREQ Input Leakage Current
IFQ-LKG
FREQ=GND
-
-
0.1
4
7
13
Duty=40%
3
3.8
4.5
Soft Start Current
ISS
N-channel MOSFET Current Llimit
ILIM
KHz V uA A A
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Advanced Power Electronics Corp.
APE1920
ELECTRICAL SPECIFICATIONS(Cont.) Parameter MOSFET On-resistance
SYM
TEST CONDITION VIN=3V, ISW=2A
RDS(on)
(Note1)
MIN -
TYP 200
MAX 280
-
160
220
VIN=5V, ISW=2A
UNITS m
EN High-level Input Voltage
VIH
1
-
-
V
EN Low-level Input Voltage
VIL
-
-
0.4
V
EN Hysteresis
hys
-
200
-
mV
-
0.01
0.1
85
90
-
%
-
-
10
µA
VEN=GND or VIN
IEN-LKG
EN Input Leakage Current Maximum Duty Cycle
VFB=0V
LX Leakage Current
Duty ILXL
Thermal Shutdown
TDS
-
150
-
Thermal Shutdown Hysteresis
TSH
-
35
-
Note
VLX = 25V, VFB=1.5V
A
o
C
Guaranteed by design.
PIN DESCRIPTIONS PIN SYMBOL EN
PIN DESCRIPTION Enable Pin
COMP
Compensation Pin
FB
Feedback Pin
SS
Soft start Pin. Connect a capacitor to GND
LX VCC
Power Input Pin
GND
Ground Pin
Switch Pin.
SGND
Signal Ground
PGND
Power Ground Frequency select pin. The power switch operates at 680kHz if FREQ is connected
FREQ
to GND and at 1.2MHz if FREQ is connected to VCC
BLOCK DIAGRAM VCC
Soft Start
1.238V Reference
Thermal Shutdown
Enable/ Disable
EN
7uA SS
Error Amplifier
Control and Driver Logic
COMP
FREQ SGND
LX
Summing Comparator
FB
N-MOS
Oscillator
Slope Compensation
Current Sense
PGND
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Advanced Power Electronics Corp.
APE1920
COMPENSATION TABLE Fre que ncy(Hz)
L1 (H)
680K(FREQ=Low )
1.2M(FREQ=High)
VIN (V)
VOUT (V)
2.5~4.4
5
R6 ( 10K
)
C7 (F) 1.2n
2.5~5.5
7
15K
470p
2.5~5.5
9
27K
270p
2.5~5.5
12
56K
150p
2.5~5.5
15
150K
120p
2.5~5.5
18
110K
100p
2.5~5.5
21
150K
82p
2.5~5.5
24
100K
47p
2.5~4.0
5
33K
1n
2.5~5.5
7
39K
390p
2.5~5.5
9
39K
220p
2.5~5.5
12
100K
100p
2.5~5.5
15
130K
68p
2.5~5.5
18
150K
56p
2.5~5.5
21
220K
47p
2.5~5.5
24
390K
39p
6.8u
4.7u
APPLICATION INFORMATION Setting the Output Voltage Application circuit item shows the basic application circuit with APE1920 adjustable output version. The external resistor sets the output voltage according to the following equation:
V
OUT
R2 ⎞ ⎛ = 1.238V × ⎜1 + ⎟ R8 ⎠ ⎝
For most applications, R8 is a suggested a value by 10~30K as possible to reduce the noise sensitivity.
. Place the resistor-divider as close to the IC
Soft Start Capacitor The soft-start function begins from SS pin Voltage=0V to VCC with a 7uA (typ.) constant current charging to the soft-start capacitor, so the capacitor should be large enough to let the output voltage reach regulation inside the soft-start cycle. Typical value of soft-start capacitor range is from 4.7nF to 100nF. After the cycle finished, the load can start to draw maximum current as required.
Frequency Select Pin (FREQ) The frequency select pin FREQ allows to set the switching frequency of the device to 680 KHz (FREQ = low) or 1.2 MHz (FREQ = high). Higher switching frequency improves load transient response but reduces slightly the efficiency. The other benefits of higher switching frequency are a lower output ripple voltage. Usually, it is recommended to use 1.2 MHz switching frequency unless light load efficiency is a major concern.
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Advanced Power Electronics Corp.
APE1920
APPLICATION INFORMATION Under Voltage Lockout (UVLO) To avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below (2.35V-150mV).
Input Capacitor Selection For better input bypassing, low-ESR ceramic capacitors are recommended for performance. Two parallel 10uF (or one 22uF) input capacitor is sufficient for most applications. For a lower output power requirement application, this value can be decreased.
Output Capacitor Selection For lower output voltage ripple, low-ESR output capacitor like ceramic capacitor is recommended. Three parallel 10uF ceramic capacitors work for most of the applications. Higher capacitor values can be used to improve the load transient response and reduce output ripple.
Layout Guide (1) MESOP-10/TDFN 3x3-10L Frequency Selection, if FREQ connect to VCC, the frequency is 1.2MHz, else connect R7 to GND, the frequency is 680KHz.
C7 C6
R8
R2
R6 R2 and C8 should be connected to FB pin by short trace. R4 C5
GND
COMP
1
FB
2
EN
3
SGND
4
PGND
5
Expose Pad
10
SS
9
FREQ
8
VCC
7
LX
6
LX
GND R7
C3
APE1920MM10/APE1920TGN3 C2 must be placed between VIN and PGND as closer as possible, VIN trace should be wide and short. The PGND trace can not directly connect to SGND, the trace take a via to ground area of bottom.
VCC
C2
R3
VIN
VOUT D1
C4
C1 L1
C4 must be placed between VCC pin and SGND as closer as possible. The SGND must connect to exposed pad directly.
LX should connected to lnductor by wide and short trace, keep sensitive components away from this trace.
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Advanced Power Electronics Corp.
APE1920
Layout Guide (2) MESOP-8/ESOP-8 Frequency Selection, if FREQ connect to VCC, the frequency is 1.2MHz, else connect R7 to GND, the frequency is 680KHz.
C7 C6
VOUT
R6 R2 R8 R2 and C8 should be connected to FB pin by short trace.
FB
R4
Exposed Pad
EN
VCC
C3 must be placed between VOUT trace and GND pin as closer as possible.
R7
FREQ
C2 VCC
C5
GND
GND
SS
COMP
R3 LX
GND
VIN
APE1920MP / APE1920MM8 VCC
C3
C1
L1
C4
VOUT D1 C4 must be placed between VCC pin and GND pin as closer as possible. The GND must connect to exposed pad directly.
LX should connected to lnductor by wide and short trace, keep sensitive components away from this trace.
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Advanced Power Electronics Corp.
APE1920
TYPICAL PERFORMANCE CHARACTERISTICS
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Advanced Power Electronics Corp.
APE1920
TYPICAL PERFORMANCE CHARACTERISTICS
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Advanced Power Electronics Corp.
APE1920
TYPICAL PERFORMANCE CHARACTERISTICS
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Advanced Power Electronics Corp.
APE1920
MARKING INFORMATION ESOP-8
Part Number Package Code
1920MP YWWSSS Date Code (YWWSSS) Y Last Digit Of The Year WW Week SSS Sequence
MESOP-8
Part Number Package Code
1920MM YWWSSS Date Code (YWWSSS) Y Last Digit Of The Year WW Week SSS Sequence
MESOP-10
Part Number Package Code
1920MM YWWSSS Date Code (YWWSSS) Y Last Digit Of The Year WW Week SSS Sequence
TDFN 3x3-10L Part Number
1920 YWWS
Date Code (YWWS) Y:Year WW Week S Sequence
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Advanced Power Electronics Corp.
APE1920
PACKAGE OUTLINES MESOP-10 D1 6
10
1
5
E2
E
E1
"A"
5
1
10
b
6
THERMALLY ENHANCED VARIATIONS ONLY
e
D
A2 A
0.25
H
C 0.05
A1
Dimensions in Millimeters Min. Nom. Max. A 1.1 A1 0 0.08 0.15 A2 0.75 0.85 0.95 C 0.08 0.15 0.23 D 2.9 3 3.1 D1 0.75 1.63 2.5 E 4.8 4.9 5 E1 2.9 3 3.1 E2 0.75 1.63 2.5 L 0.4 0.6 0.8 b 0.22 0.3 0.38 e 0.50 BSC y 0.1 θ 0O 8O JEDEC outline: MO-187 BA-T Symbol
GAUGE PLANE SEATING PLANE
L1 L DETAIL A
Dimensions in Inches Min. Nom. Max. 0.043 0 0.003 0.006 0.03 0.034 0.038 0.003 0.006 0.009 0.114 0.118 0.122 0.03 0.064 0.098 0.189 0.193 0.197 0.114 0.118 0.122 0.03 0.064 0.098 0.016 0.024 0.031 0.009 0.012 0.015 0.020 BSC 0.004 0O 8O
Advanced Power Electronics Corp.
APE1920
MESOP-8
D1
E2
Expose Pad
E
5
E1
8
L DETAIL A 4
1
b D
e
y
A1
C
A
A2
7 (4X)
Dimensions in Millimeters Min. Nom. Max. A 1.1 A1 0 0.08 0.15 A2 0.75 0.85 0.95 C 0.08 0.15 0.23 D 2.9 3 3.1 D1 0.75 1.63 2.5 E 4.8 4.9 5 E1 2.9 3 3.1 E2 0.75 1.63 2.5 L 0.4 0.6 0.8 b 0.22 0.3 0.38 e 0.65 BSC y 0.1 θ 0O 8O JEDEC outline: MO-187 AA-T Symbol
DETAIL A Dimensions in Inches Min. Nom. Max. 0.043 0 0.003 0.006 0.03 0.034 0.038 0.003 0.006 0.009 0.114 0.118 0.122 0.03 0.064 0.098 0.189 0.193 0.197 0.114 0.118 0.122 0.03 0.064 0.098 0.016 0.024 0.031 0.009 0.012 0.015 0.026 BSC 0.004 0O 8O
Advanced Power Electronics Corp.
APE1920
ESOP-8
H
E
Expose Pad
Y
X
L DETAIL A b D
e
y
A1
C
A
A2
7 (4X)
Dimensions in Millimeters Min. Nom. Max. A 1.75 A1 0 0.15 A2 1.25 C 0.1 0.2 0.25 D 4.7 4.9 5.1 E 3.7 3.9 4.1 H 5.8 6 6.2 L 0.4 1.27 b 0.31 0.41 0.51 e 1.27 BSC y 0.1 X 2.34 Y 2.34 0O 8O Mold flash shall not exceed 0.25mm per side JEDEC outline: MS-012 BA Symbol
DETAIL A
Dimensions in Inches Min. Nom. Max. 0.069 0 0.06 0.049 0.0075 0.008 0.01 0.185 0.193 0.2 0.146 0.154 0.161 0.228 0.236 0.244 0.015 0.05 0.012 0.016 0.02 0.050 BSC 0.004 0.092 0.092 0O 8O
Advanced Power Electronics Corp.
APE1920
TDFN 3x3-10L D
D2 L
E2
E
Pin1 e
(Top View)
b
(Bottom View)
A A3 A1
SEATING PLANE
(SIDE View)
Symbol A A1 A3 b D D2 E E2 e L
Dimensions in Millimeters Min. Nom. Max. 0.70 0.75 0.80 0.00 0.02 0.05 0.20 REF. 0.18 0.25 0.30 2.90 3.00 3.10 2.20 2.40 2.50 2.90 3.00 3.10 1.50 1.60 1.70 0.50 BSC. 0.30 0.40 0.50
Dimensions in Inches Min. Nom. Max. 0.028 0.030 0.031 0.000 0.001 0.002 0.008 REF. 0.007 0.010 0.012 0.114 0.118 0.122 0.087 0.094 0.098 0.114 0.118 0.122 0.059 0.063 0.070 0.020 BSC. 0.012 0.016 0.020
