ASTEC APC08M03-W

Technical Reference Note (APC08)
Centauri (APC08) Non-Isolated DC/DC Power Module
The Centauri (APC08) DC-DC Power Module is a high efficiency non-isolated buck converter designed for use in a wide
variety of applications. It works from a wide input voltage range of 1.8V to 6V or 5V to 13V and offers an extensive array of
output voltages starting from 0.9V to 3.6V (up to 6V in some flavors). Through careful layout and component selection it
achieves the highest efficiency/load in the smallest footprint available in the market today. It is ideal for Point of Load
applications and provides the most flexibility for the ever-changing DSP and ASIC power requirements.
Electrical Parameters
Input
Input range
Efficiency
1.8-6.0VDC and 5.0-13.0VDC
3.3V @ 93% Typ
Control
Enable TTL compatible (Positive Logic)
Industry Standard
0.53 X 1.3 X 0.29H SMT Package
Output
Regulation
(Line, Load, Temp)
Special Features
Ripple and noise
•
•
•
Output voltage
adjust range
Transient Response
•
•
•
•
•
•
•
•
Point of load (POL) applications
High efficiency, [email protected]% Typ
-40°C to +85°C Ambient Operating
Temperature
Open Frame SMT
Positive enable function
Low output ripple and noise
Regulation to zero load
Programmable Output from 0.9V to 3.6V
(External Trim Resistor)
Fixed frequency switching (400 KHz)
Power Good Signal (Optional)
Active Current share (Optional)
<3%
75mV - (≥2.5V Output)
50mV - (<2.5V Output)
0.9V to 3.6V (J Version)
5% max deviation with
50% to 75% full load
500 µS (max) recovery
Environmental Specifications
Safety
•
•
•
Designed to meet:
UL, cUL
60950 Recognized
TUV
EN60950 Licensed
Operating temperature: -40°C to +85°C
Storage temperature: -40°C to +125°C
MTBF: >3.3 million hours
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 1 OF 23
Technical Reference Note (APC08)
APC08 SERIES
THIS SPECIFICATION COVERS THE REQUIREMENTS
For A New 1.3" X 0.53" X 0.33”(H) Maximum 28W Single Output High efficiency Non-Isolated SMT DC-DC Converter
MODEL NAME
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
APC05A08
APC04S08
Vin nominal/
Vin range
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 2.2-6.0V
3.3V / 3.0-6.0V
5.0V / 4.0-6.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
8V / 5.0-12.0V
Vout/Iout
0.9V, 8A
1.2V, 8A
1.5V, 8A
1.8V, 8A
2.5V, 8A
3.3V, 8A
0.9V, 8A
1.2V, 8A
1.5V, 8A
1.8V, 8A
2.5V, 8A
3.3V, 8A
5V, 5A
6V, 4A
Options (suffix):
"-9"
= Trim
"-9MA" = Trim with Power Good and Active Current Share
"-J"
= Jedec tray-type packaging
“W”
= Improved Loop Bandwidth / Transient Response (only for APC08x03 series)
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 2 OF 23
Technical Reference Note (APC08)
Electrical Specifications
STANDARD TEST CONDITION on a single unit, unless otherwise specified.
T A:
25°C (Ambient Air)
Vin (P1):
APC08x03
+1.8V to +6.0V
APC08x08
+5.0V to +13V
Enable (P5):
Open
Vo (P2):
Connect to load
Gnd (P3):
Return for Vin and Vo
Trim (P4):
Open
PGood (P6):
Open
P (P7):
Open
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation
of the device is not implied at these or in any other conditions in excess of those given in the operational sections of
the specs. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Input Voltage
Continuous
Transient (100ms)
Continuous
Transient (100ms)
Device
Symbol
Min
Typ
Max
Unit
03
03
08
08
VIN
VIN,trans
VIN
VIN,trans
1.8
5.0
-
-
6.0
7.0
13.0
14.0
Vdc
Vdc
Vdc
Vdc
Operating Temperature
All
TA
-40
-
85
ºC
Storage Temperature
All
TSTG
-40
-
125
ºC
Operating Humidity
All
-
-
-
85
%
IIN,max
Min
1.8
5.0
-
Typ
3.3
8.0
-
Unit
Vdc
Vdc
A
IIN-1
-
200
Max
6.0
12.0
9.0
6.0
5.0
250
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage1
Maximum Input Current2
(VIN = 0 to VIN,max; IO = IO,max)
Input Ripple Current
Device
03
08
All
APC05
APC04
All
Symbol
VIN
mAp-p
5Hz to 20MHz
Note: 1. Minimum VIN (03 device) for 1V8, 2V5 and 3V3 versions are 2V2, 3V and 4V respectively. For 08
device, min VIN for 5V and 6V versions are 7.5Vin and 8.5Vin
2. This power module is not internally fused. The use of an input line fuse (03 Version: GMA-10A; 08
version: GMA-6A Bussman fuses or equivalent) is recommended.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 3 OF 23
Technical Reference Note (APC08)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Setpoint
(VIN=VIN,min to VIN,max at
IO=IO,max)1
Output Regulation:
Line: VIN=VIN,min to VIN,max
Load: IO=IO,min to IO,max
Temp: TA= -40 °C to 85 °C
Output Ripple and Noise11
Peak to Peak: 5Hz to 20MHz
Output Current Range
External Load Capacitance9
Capacitor ESR
Output Current Limit Inception3
Output Short Circuit Current4
Efficiency
VIN = 1.8V to 6V 1
IO = 8A Resistive Load
Switching Frequency
Turn-On time (Input to Output)5
IO = 8A; VIN = VIN,nom
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
Device
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
APC05A08
APC04S08
Symbol
VO,SET
Min
0.873
1.164
1.455
1.746
2.425
3.200
0.873
1.164
1.455
1.746
2.425
3.200
4.850
5.820
Typ
0.9
1.2
1.5
1.8
2.5
3.3
0.9
1.2
1.5
1.8
2.5
3.3
5.0
6.0
Max
0.927
1.236
1.545
1.854
2.575
3.400
0.927
1.236
1.545
1.854
2.575
3.400
5.150
6.180
Unit
Vdc
All
All
All
-
-
-
0.5
0.5
±1.5
%
%
%
≥ 2.5V
< 2.5V
All
5V
6V
Suffix “W”
All
Suffix “W”
All
All
All
IO
0
0
0
10
100
-
11.5
-
75
50
8
5
4
5000
500
100
-
mVPK-PK
mVPK-PK
A
APC08J03
APC08K03
APC08M03
APC08Y03
APC08G03
APC08F03
All
All
η
74
80
83
85
89
90
-
76
81
86
88
91
93
400
-
50
%
IO
-
-
µF
µF
mΩ
mΩ
A
KHz
ms
SHEET 4 OF 23
Technical Reference Note (APC08)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Efficiency
VIN = 6V to 12V
IO = 8A Resistive Load
(5A for 5Vo; 4A for 6Vo)
Dynamic Response:
Slew Rate
Load Change: 50%-75% IO,max
Peak Deviation Settling time
to VO,nom
Device
Symbol
APC08J08
APC08K08
APC08M08
APC08Y08
APC08G08
APC08F08
APC05A08
APC04S08
Min
71
75
77
81
85
87
90
91
Typ
76
81
84
86
90
92
94
95
Max
-
Unit
0.1
1.0
5
500
10
-
A/µs
%VO
µs
All
Suffix “W”
All
All
∆IO/∆t
-
-
All
All
-
-
5
500
10
-
%VO
µs
All
-
-
5
-
%VO
Typ
-
Max
3.6
Unit
V
Load Change: 50% to 25% IO,max
Peak Deviation Settling time
to VO,nom
Output Voltage Overshoot
Passive Resistive Full Load
FEATURE SPECIFICATION
Parameter
Output Voltage Adjustment Range6
Device
-9 opt
Module Parallel Capability10
-9MA
40
-
60
%IO
All
-
-
5
6
mA
V
0
100
-
250
-
mΩ
KΩ
> 4.1
0
-
-
14
0.8
60
Vdc
Vdc
µA
Power Good7
Open Collector max sink current
max pull-up voltage
Condition PGLOW
90%VO,SET-MIN > VO > 110%VO,SET-MAX
90%VO,SET-MIN ≤ VO ≤ 100%VO,SET-MAX
Output Enable8
Module ON: Logic High
Module OFF: Logic Low
Enable source current at Logic Low
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
All
All
All
All
All
Symbol
PGLOW
PGHIGH
Min
VO
SHEET 5 OF 23
Technical Reference Note (APC08)
Electrical Specifications (continued)
Note: 3. This feature is only for module protection and is not intended for customer application. The value is
specified at 25C ambient air temperature. For other ambient air temperature, please refer to thermal
derating curve to determine corresponding current-limit inception values.
4. Pulse train with 90 ms period and 1ms pulse width. Average Iout equals about zero.
5. Input to Output Turn-On time is defined as the difference between t1 and t2: where t1 is the time
when the input voltage reaches the minimum VIN (VIN = VIN,MIN) and t2 is the time when the output
voltage reaches it's specified range (VO = VO,SET-Min).
6. There are two methods applicable to be able to trim the output voltage. Please refer to related
sections under Feature Specification.
7. See Figure 6 for PGood configuration
8. Refer to further notes under Feature Specification for the Enable Pin function.
9. Check with factory for higher output capacitance loading.
10. Please refer to “Basic Operation and Features” section on page 11 for additional information on Current
sharing.
11. Output ripple is measured with 470µF cap termination on the output.
ISOLATION SPECIFICATION
- The APC08 series are Non Isolated units.
SAFETY APPROVAL
- UL / cUL 60950, and TUV EN60950 - Flammability and temp rise only.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 6 OF 23
Technical Reference Note (APC08)
Basic Operation and Features
The APC08 family was designed specifically to address applications where on board distributed power with Point-of-Load
Converters (Conversion needed as close to the IC, usually DSP’s and ASIC’s) is employed. With its wide range input and
flexible programmable output, any change in the load becomes very manageable with little to no impact on time to market. All
of the converters in this family are buck converters. The APC08x03 versions allow 1.8V to 6V input voltage and the
APC08x08 versions allow a 5V to 12V input with 14V max surge.
MODULE PIN ASSIGNMENT
There are 4 to 7 surface mount pins on a Centauri module. The availability of pins from individual modules is relevant
to its version / selected option.
PIN #
P1
P2
P3
P4
P5
P6
P7
DESIGNATION
VIN
VO
GND
TRIM
ENABLE
PGood
P
Input Voltage
Output Voltage
Common Ground
Output Voltage Adjustment [OPTION]
Output Voltage Enable
Power Good [OPTION]
Load Current Active Sharing [OPTION]
INDUSTRY STANDARD PINOUT
When ordered with no options, the module comes with only 4 pins – Vin, Gnd, Vout and Enable – and is compatible
with other leading manufacturer’s footprint. The PGood, Active Current Share, and Trim pins are options that can be
ordered with any model number. For the optional trim function add a (-9) to the end of the standard part number. For
the optional current share and PGood signal in addition to the trim function, add (-9MA) to the end of the part
number. Please refer to the Part Number Ordering Scheme section.
Note: When using the trim function, this module offers much more trim flexibility than the competitive footprint and also
requires a jumper between the two footprints to be source compatible. Contact Factory for applications note.
VIN
Trim
Current
Share
GND VO
Enable
PGood
Figure 1. Pin Assignment Viewed from Top of Board.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 7 OF 23
Technical Reference Note (APC08)
Typical Application Circuit (Standard Pinout)
Recommended C1 is a low ESR (<100 mohms) 100 µF tantalum and C2 is a 1 µF ceramic or equivalent. Recommended
output decoupling capacitor C3 for –W models is 22 µF low ESR ceramic capacitor (at a min). For all other models, C3 can go
as low as 1 µF ceramic capacitor.
Figure 2. Typical Application Circuit.
Enable Pin (Standard configuration)
Pin P5 is functioned to enable the output voltage of a
module. If this pin is left open or connected to > 4.1Vdc
up to 14Vdc, the module is turned on. On the other hand,
if this pin is connected to ground or to a voltage potential
from 0 to 0.8Vdc, the module is turned off. The enable pin
can source current up to 60µA max - suited for typical
open-collector transistors readily available in the market.
For TTL compatibility, Figure 3 shows a 7405 open
collector inverter IC utilized to function the Enable
feature. Other common chips that can do the function are
74S05; 74HCT05; non-inverting - 7407; 74S07; 74HC07.
If SMT packaging is preferred, Fairchild's Tiny Logic
NC7SZ05 or TI's Little Logic SN7SLVC1G06 comes in SOT23
or SC70 packages.
Figure 3. Output Voltage Enable function diagram.
Special Feature Pins (Options):
Trim Function (-9):
Pin P4 is used for output voltage adjustment. The output voltage can be trimmed through an external resistor or through an
external DC supply as described in the succeeding sections.
Method 1: External Trim Resistor.
By connecting an external resistor across P4 and P3 (Gnd), the voltage appearing on pin P2 (Vo) is adjusted to a higher value.
The output voltage of a module can be adjusted up to a maximum value of 3.3V (nominal) or 83% of the input voltage,
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 8 OF 23
Technical Reference Note (APC08)
Method 1: External Trim Resistor (continued)
whichever is lower. By connecting an external resistor across P4 and P2, Vo is adjusted to a lower value. Only small
reductions, 2%, in voltage are recommended, as adjustment to lower voltages tends to affect the loop compensation of the
module.
Full range adjustment (from 0.9V to 3.6V) can be obtained from a module with the lowest Vo setpoint (0.9Vo).
To adjust Vo to a higher value, please refer to
Figure 4. The required resistor value (Rt) can be
determined through Equation (1) where Vo is the
voltage on P2 before the adjustment and Vot is the
voltage of P2 after Rt is connected.
Rt =
Vref
R1
Vot − Vo
Equation (1)
Figure 4. Output Voltage Trim Setup.
Please refer to related constants given in TABLE 1 to calculate the Equation.
APC08X03
APC08X08
Vr / Vref
Version
R2
R2
0.87V
0.9V
97.6k
210k
1.2V
8.45k
17.4k
TABLE 1. CONSTANTS
1.5V
1.8V
4.32k
2.94k
9.09k
6.04k
2.5V
1.69k
3.48k
3.3V
1.13k
2.32k
R1
3.09k
6.49k
Be aware that the maximum Vo allowed is 3.6V (for APC08x08 series). Please refer to Centauri datasheet.
Example:
Module version: APC08J03-9 (1.8 to 6.0Vin, 0.9Vo).
Requiring to adjust output voltage from Vo = 0.9V to Vot = 1.8V. Vref = 0.875V and R1 = 3.09kΩ (from TABLE 1).
Based on Equation (1), Rt can be determined as 3.0kΩ.
To adjust Vo to a lower value, Rt should be connected between P4 and P2. Equation (2) provides the calculation for Rt.
Rt =
(Vo − Vref )(Vot − Vref )
Vref (Vo − Vot )
R2
Equation (2)
Note: minimum Vo = 0.9V
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 9 OF 23
Technical Reference Note (APC08)
Method 1: External Trim Resistor (continued)
Example
Module version: APC08F03-9 (4.0 to 6.Vin, 3.3Vo).
Requiring to adjust the output voltage from Vo = 3.3V to Vot = 3.3 (1-0.02) = 3.234V.
Vo = 3.3V, Vot = 3.234V, Vref = 0.875V, R2 = 1.13kΩ (from TABLE 1).
Based on Equation (1), Rt can be determined as 111.9kΩ.
Trim Function (continued)
Method 2: External DC Source
By connecting an external DC supply across P4 (Enable) and P3 (GND) through a limiting resistor Rt, (see Figure 5), output
voltage adjustment can also be achieved. Equation 3 provides the relationship between the External DC supply, Vt, and Vo
(where Vo is the desired output voltage).
Rt
 Rt Rt 
Vt = 1 +
+
Vr − Vo
R1
 R1 R 2 
Given: Rt = 10kΩ
Equation (3)
Figure 5. External DC source for output trim adjust.
Vo Adjustment to Lower Voltages. This method does not limit the recommended lower Vo adjustment to 2% as mentioned
on previous sections re: Vo adjustment through external trim resistor.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 1.8V
Vo = 1.8V, Vr = 0.87V, R1 = 3.09kΩ, R2 = 1.69kΩ (from Table 1). Based on Equation (3), Vt = 3.0V.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 0.9V
Vo = 0.9V, Vr = 0.87V, R1 = 3.09kΩ, R2 = 1.69kΩ (from Table 1). Based on Equation (3), Vt = 5.9V.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 10 OF 23
Technical Reference Note (APC08)
Method 2: External DC Source (continued)
Vo Adjustment to Higher Voltages
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 3.3V
Vo = 3.3V, Vr = 0.87V, R1 = 3.09kΩ, R2 = 1.69kΩ (from Table 1). Based on Equation (3), Vt = -1.84V.
If application of negative voltage is not desired, the limiting resistor Rt can either be changed to a lower value (Rt = 1kΩ, such
that Vt = 0.60V per Equation 3), or use Method 1.
Power Good Signal Operation (Option (-9MA)):
PG pin provides an output signal indicating the Vout is
operational (TTL logic signal). It can sink current up to a
max of 5mA and can have a maximum external pull-up
voltage of 6V. Please see recommended setup shown on
Figure 6.
For multiple module configurations, the PG pin/signal
can be used to drive the Enable signal of the other
module for simple sequencing scheme.
Figure 6. PGood setup.
Active Current Share Operation (Option (-9MA)):
Active Current share pin is compatible with APC08 modules only. Connecting this pin directly with the same Pin from another
module guarantees current sharing to within 40% to 60% Iout. Note that this pin is not compatible with competitive modules
that employ active current sharing.
To attain efficient current sharing between like modules, the following points are recommended:
a) The modules to be shared should be located as close as possible into the host card.
b) The copper tracks that connect Vo and GND should at least be 0.60" in width with at least 2 oz. Cu.
c) Due to tolerances of turn-on time characteristics, the initial load current of two APC08 units connected in current sharing
configuration should be less than the OCP point of one module. This is to ensure that the first unit that reaches Vo set-point
is capable of supplying the load current. This also eliminates the possibility of false triggering the OCP protection. The load
current can then be ramped up to the desired loading condition (typical 13A max combined for 2 modules in parallel) after
both outputs have stabilized.
d) Due to mismatches on the output voltage setpoints of the two converters in parallel, it is recommended to maintain a
minimum load current (typical 1.5A) on the output.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 11 OF 23
Technical Reference Note (APC08)
Performance Curves - Efficiency
2.5V Efficiency VS Load Current @ Ta = 25 deg C
95
95
90
90
EFFICIENCY [%]
EFFICIENCY [%]
3.3V Efficiency VS Load Current @ Ta = 25 deg C
85
80
75
4Vin
70
5Vin
65
85
80
75
3Vin
70
3.3Vin
65
6Vin
60
6Vin
60
0.0
1.0
2.0
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
7.0
8.0
0.0
1.0
Figure 7. APC08F03 Efficiency Curve.
90
90
EFFICIENCY [%]
EFFICIENCY [%}
95
85
80
75
2.2Vin
3.3Vin
8.0
85
80
75
1.8Vin
70
3.3Vin
65
6Vin
60
6Vin
60
0.0
1.0
2.0
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
7.0
0.0
8.0
1.0
2.0
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
7.0
Figure 9. APC08Y03 Efficiency Curve.
Figure 10. APC08M03 Efficiency Curve.
1V2 Efficiency VS Load Current @ Ta = 25 deg C
0.9V Efficiency VS Load Current @ Ta = 25 deg C
90
85
85
80
EFFICIENCY [%]
EFFICIENCY [%]
7.0
1.5V Efficiency VS Load Current @ Ta = 25 deg C
95
65
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
Figure 8. APC08G03 Efficiency Curve.
1V8 Efficiency VS Load Current @ Ta = 25 deg C
70
2.0
80
75
70
1.8Vin
65
3.3Vin
60
75
70
65
1.8Vin
60
3.3Vin
55
6Vin
8.0
6Vin
50
55
0.0
1.0
2.0
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
Figure 11. APC08K03 Efficiency Curve.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
7.0
8.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
LOAD CURRENT [Amp]
Figure 12. APC08J03 Efficiency Curve.
SHEET 12 OF 23
Technical Reference Note (APC08)
Performance Curves - Efficiency (continued)
2.5V Efficiency VS Load Current @ Ta = 25 deg C
100
100
90
90
EFFICIENCY [%]
EFFICIENCY [%]
3.3V Efficiency VS Load Current @ Ta = 25 deg C
80
70
60
50
12Vin
40
70
60
50
12Vin
40
6Vin
30
80
6Vin
30
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
0.0
1.0
2.0
5.0
6.0
7.0
Figure 13. APC08F08 Efficiency Curve.
Figure 14. APC08G08 Efficiency Curve.
1.8V Efficiency VS Load Current @ Ta = 25 deg C
1.5V Efficiency VS Load Current Ta = 25 deg C
100
90
90
80
80
70
60
50
12Vin
40
0.0
1.0
2.0
3.0
4.0
5.0
8.0
6.0
7.0
70
60
50
40
12Vin
30
6Vin
30
6Vin
20
0.0
8.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
LOAD CURRENT [Amp]
LOAD CURRENT [Amp]
Figure 15. APC08Y08 Efficiency Curve.
Figure 16. APC08M08 Efficiency Curve.
1.2V Efficiency VS Load Current @ Ta = 25 deg C
0.9V Efficiency VS Load Current @ Ta = 25 deg C
90
90
80
EFFICIENCY [%]
EFFICIENCY [%]
4.0
LOAD CURRENT [Amp]
EFFICIENCY [%]
EFFICIENCY [%]
LOAD CURRENT [Amp]
3.0
70
60
50
40
12Vin
30
2.0
3.0
4.0
5.0
6.0
LOAD CURRENT [Amp]
Figure 17. APC08K08 Efficiency Curve.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
7.0
60
50
40
12Vin
6Vin
20
20
1.0
70
30
6Vin
0.0
80
8.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
LOAD CURRENT [Amp]
Figure 18. APC08J08 Efficiency Curve.
SHEET 13 OF 23
Technical Reference Note (APC08)
Performance Curves - Thermal Derating Curve
2.5V Derating
9
8
8
7
Load Current [Amp]
Load Current [Amp]
3.3V Derating
9
7
6
5
4
3
2
0 LFM
1
400 LFM
35
4
3
2
1
0 LFM
400 LFM
0
0
25
6
5
45
55
65
75
25
85
35
45
Ambient Temperature [ °C]
Figure 19. APC08F03 Thermal Derating Curve.
8
8
Load Current [Amp]
Load Current [Amp]
9
7
6
5
4
3
0 LFM
400 LFM
35
7
6
5
4
3
2
0 LFM
1
400 LFM
45
55
65
Ambient Temperature [ °C]
75
25
85
35
45
75
85
0.9V Derating
1.2V Derating
9
8
8
7
7
Load Current [Amp]
Load Current [Amp]
65
Figure 22. APC08M03 Thermal Derating Curve.
9
6
5
4
3
0 LFM
1
55
Ambient Temperature [ °C]
Figure 21. APC08Y03 Thermal Derating Curve.
2
85
0
0
25
75
1.5V Derating
1.8V Derating
1
65
Figure 20. APC08G03 Thermal Derating Curve.
9
2
55
Ambient Temperature [ °C]
400 LFM
6
5
4
3
2
0 LFM
1
400 LFM
0
0
25
35
45
55
65
Ambient Temperature [ °C]
75
Figure 23. APC08K03 Thermal Derating Curve.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
85
25
35
45
55
65
Ambient Temperature [ °C]
75
85
Figure 24. APC08J03 Thermal Derating Curve.
SHEET 14 OF 23
Technical Reference Note (APC08)
Performance Curve - Thermal Derating (continued)
2.5V Derating
9
8
8
7
7
Load Current [Amp]
Load Current [Amp]
3.3V Derating
9
6
5
4
12Vin (0 LFM)
12Vin (400 LFM)
6Vin (0 LFM)
6Vin (400 LFM)
3
2
1
6
5
4
12Vin (0 LFM)
12Vin (400 LFM)
6Vin (0 LFM)
6Vin (400 LFM)
3
2
1
0
0
25
35
45
55
65
Ambient Temperature [°C]
75
25
85
Figure 25. APC08F08 Thermal Derating Curve.
35
8
8
7
7
6
5
4
12Vin (0 LFM)
12Vin (400 LFM)
6Vin (0 LFM)
6Vin (400 LFM)
1
6
5
4
12Vin (0 LFM)
12Vin (400 LFM)
3
2
6Vin (0 LFM)
6Vin (400 LFM)
1
0
0
25
35
45
55
65
Ambient Temperature [°C]
75
85
25
Figure 27. APC08Y08 Thermal Derating Curve.
35
8
8
7
7
Load Current [Amp]
9
6
5
4
12Vin (0 LFM)
2
12Vin (400 LFM)
6Vin (0 LFM)
1
6Vin (400 LFM)
75
85
0.9V Derating
9
3
45
55
65
Ambient Temperature [°C]
Figure 28. APC08M08 Thermal Derating Curve.
1.2V Derating
Load Current [Amp]
85
1.5V Derating
9
Load Current [Amp]
Load Current [Amp]
1.8V Derating
2
75
Figure 26. APC08G08 Thermal Derating Curve.
9
3
45
55
65
Ambient Temperature [°C]
6
5
4
12Vin (0 LFM)
12Vin (400 LFM)
3
2
6Vin (0 LFM)
6Vin (400 LFM)
1
0
0
25
35
45
55
65
Ambient Temperature [°C]
75
Figure 29. APC08K08 Thermal Derating Curve.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
85
25
35
45
55
65
Ambient Temperature [°C]
75
85
Figure 30. APC08J08 Thermal Derating Curve.
SHEET 15 OF 23
Technical Reference Note (APC08)
Performance Curves
Typical performance curves, TON delay, at 25°C ambient temperature; IO = IO,max, VIN = VIN,max. For reference CH1 is
connected to +VIN pin, CH2 is connected to the output of the module.
Figure 31. APC08F03 TON delay at VIN,max = 6V.
Figure 32. APC08G03 TON delay at VIN,max = 6V.
Figure 33. APC08Y03 TON delay at VIN,max = 6V.
Figure 34. APC08M03 TON delay at VIN,max = 6V.
Figure 35. APC08K03 TON delay at VIN,max = 6V.
Figure 36. APC08J03 TON delay at VIN,max = 6V.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 16 OF 23
Technical Reference Note (APC08)
Performance Curves (continued)
Figure 37. APC08F08 TON delay at VIN,max = 12V.
Figure 38. APC08G08 TON delay at VIN,max = 12V.
Figure 39. APC08Y08 TON delay at VIN,max = 12V (Ch1)
Figure 40. APC08M08 TON delay at VIN,max = 12V.
Figure 41. APC08K08 TON delay at VIN,max = 12V.
Figure 42. APC08J08 TON delay at VIN,max = 12V.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 17 OF 23
Technical Reference Note (APC08)
Young’s Stability Curves
GAIN MARGIN
10
1
Impedance Magnitude ohms
0.1
0.01
3
1 . 10
4
1 . 10
5
1 . 10
6
1 . 10
7
1 . 10
100
3
1 . 10
1 . 10
frequency
5
1 . 10
6
1 . 10
3
1 . 10
1 . 10
Frequency
5
1 . 10
6
1 . 10
4
200
_______0db
______10db
______20db
______30db
______40db
______50db
150
100
Phase
50
0
50
100
150
200
100
4
Figure 43. YSC- Gain Margin response to determine system stability at other load condition.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 18 OF 23
Technical Reference Note (APC08)
Young’s Stability Curves
PHASE MARGIN
10
Impedance Magnitude ( Ohms )
1
0.1
0.01
1 .10
3
1 .10
4
100
1 .10
3
1 .10
4
1 .10
5
1 .10
6
________0°
_______15°
_______30°
_______45°
_______60°
_______75°
_______90°
50
Impedance Phase Angle ( Degrees )
0
50
100
150
100
1 .10
3
4
1 .10
Frequency
1 .10
5
1 .10
6
Figure 44. YSC - Phase Margin response to determine system stability at other load conditions.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 19 OF 23
Technical Reference Note (APC08)
Mechanical Specifications
OUTLINE DRAWING
PIND / PIN DIMENSION
Nominal Pin
Dimension
0.055 X 0.102 [in]
Suggested Pad
Dimensions
0.070 X 0.110 [in]
Figure 45. Pad Layout outline (in mm).
Parameter
Dimension
Weight
Device
All
All
Symbol
L
W
H
-
Min
-
Typ
5 (0.16)
Max
1.300 (33.02)
0.530 (13.46)
0.290 ( 7.36)
10 (0.32)
Unit
in (mm)
in (mm)
in (mm)
g (oz)
Typical
Recommended
Pick-Up Point
Figure 46. Mechanical Outline (in inches).
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 20 OF 23
Technical Reference Note (APC08)
RECOMMENDED LOCATION FOR PICK AND PLACE
The flat top surface of the large inductor (topside of the board) provides a versatile and convenient way of picking up the
module (see Figure 46). A 6-7mm outside diameter nozzle from a conventional SMD machine is recommended to attain
maximum vacuum pick-up. Nozzle travel and rotation speed should be controlled to prevent this off-centered picked-up
module from falling off the nozzle. The use of vision recognition systems for placement accuracy will be very helpful.
RECOMMENDED REFLOW PROFILE
REFLOW NOTES / RECOMMENDATIONS
240
2.
3.
Refer to the recommended Reflow Profile per
Figure 47. Profile parameters exceeding the
recommended maximums may result to
permanent damage to the module.
The module is recommended for topside
reflow process to the host card. For other
orientations, contact factory.
In the event that the module needs to be
desoldered from the host card, some pins
may be detached from the module.
PEAK TEMPERATURE
200°C - 230°C
220
200
TEMPERATURE (deg C)
1.
183°C
180
REFLOW
ZONE
160
140
120
< 80 sec
110°C
PRE-HEAT ZONE
120 - 180 sec
100
80
SLOPE
< 4°C /sec
60
40
20
0
0
30
60
90
120
150
180
210
240
270
300
TIME (seconds)
Figure 47. Recommended Reflow Profile.
MODULE MARKINGS / LABELS
Marking shall be permanent and legible.
Please refer to Figure 48 for the module
marking/ label detail.
Note 1
MMM
Model No
FFF
Option
Note 2
YYWW
Year / Work Week
D
Day of Week
PP
nth Panel of the day
LL
Location in the panel
Note 3: Barcode
6 & 7 characters / line
Code 128, 32CPI
0.070" Height
✟
✟
APC08MMMFFF
YYWWDPPLL
✟
Figure 48. Module Label
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 21 OF 23
Technical Reference Note (APC08)
PACKING AND SHIPPING
Standard packaging for the modules will be in tape and reel. Jedec-style tray packaging is also available (add suffix
"J" in pn). Please refer to the ordering information. Maximum number of modules in a reel is 300pcs. The tray can
hold 33 modules max. Please refer to Figure 49 for the carrier dimensions.
All dimensions are in mm
Figure 49. Tape/ pocket dimensions
Figure 50. Jedec-style tray dimensions in mm.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 22 OF 23
Technical Reference Note (APC08)
PART NUMBER CODING SCHEME FOR ORDERING
A
P
x
C
0
8
x
0
y
Output Voltage
F = 3.3V
G = 2.5V
Y = 1.8V
-
z
M = 1.5V
K = 1.2V
J = 0.9V
y
Input Voltage Range
3: 1.8V to 6V
8: 5V to 12V
z
Options
9:
Trim function
9MA: Trim function plus PGood and Current Sharing
J:
Adding a J suffix indicates Jedec style tray packaging
W:
Improved Loop Bandwidth (for APC08x03 version only)
Please call 1-888-41-ASTEC for further inquiries or
visit us at www.astecpower.com
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 23 OF 23