AMPSS
™
Astec Modular Power Supply System
AK80A
Economy
Series
132 - 240W Output Power
DC-DC Converter Module
Technical Reference Manual
Series Highlights
•
•
•
•
•
•
•
•
High Efficiency - up to 87%
85°C baseplate/case operating temperature
Low output ripple and noise
High Reliability - over 1 million hours MTBF
Wide input voltage range
Excellent Transient Response
Fixed Switching Frequency
Designed to meet Telecom specification
AK80A Economy Series
2
Contents
Introduction ................................................................................................................... 4
Special Features ............................................................................................................. 4
Ordering Information ..................................................................................................... 5
Safety ............................................................................................................................. 5
Electrical Specifications ............................................................... 6
Absolute Maximum Ratings – all models ...................................................................... 6
Pin Connections - all models ......................................................................................... 7
Insulation - all models .................................................................................................... 8
Electrical Specifications for 24V Input Models (AK80A-024L-xxxFyy) ...................... 9
Functional Description ............................................................... 11
Remote Sense (+SENSE, -SENSE) ............................................................................ 11
Enable Control (ENABLE) .......................................................................................... 11
Output Voltage Adjustment (V ADJ) ........................................................................... 11
Power Good/Identification (PG/ID) ............................................................................ 12
Current Sharing (C SHARE)........................................................................................ 12
Clock Signals (CLK IN, CLK OUT) ........................................................................... 12
Temperature Monitoring (TEMP MON) ...................................................................... 13
Current Limit Adjustment (C LIM ADJ) ...................................................................... 13
PRI AUX ..................................................................................................................... 13
Design Considerations ................................................................ 15
Input Bulk Capacitors .................................................................................................. 15
Remote Loads .............................................................................................................. 15
Input Fusing ................................................................................................................. 15
Parallel Connection Considerations ............................................................................. 15
Break Regulation .......................................................................................................... 16
Conducted EMI ........................................................................................................... 16
Overtemperature Protection ......................................................................................... 16
Thermal Data ................................................................................................................ 16
MTBF .......................................................................................................................... 17
Output Ripple and Noise ............................................................................................. 17
AMPSS
®
Reference Manual
Rev. 06 Aug 00
Specifications
3
Application Examples ................................................................. 18
AC Input Design .......................................................................................................... 18
Parallel Connection Design .......................................................................................... 18
Mechanical Information ............................................................. 19
Dimensions................................................................................................................... 19
Recommended PCB Layout ........................................................................................ 20
Heatsink Mounting Information ................................................................................... 21
Rev. 05 Aug 00
AMPSS
®
Reference Manual
AK80A Economy Series
AK80A Economy Series DC-DC Converters
31
32
21
+
+OUT
INPUT
-
+IN
31
MOSFET
switcher
24
-IN
32
300Vmodules
only
ID
Resistor
26
-OUT
CLK IN 8
CLK OUT 7
C SHARE 6
S COM 5
9 ENABLE
10 C LIM ADJ
11 TEMP MON
12 PRI AUX
29
S COM
5
Output
detection
2
PG/ID
AMPSS
TM
POWER MODULE
C LIM ADJ
10
CSHARE
6
Current
sensing
and
control
Over-
voltage
protection
PWM
control
and
gating
1
+SENSE
PRI AUX
12
PRI AUX
ENABLE
9
Voltage
sensing
and
control
CLK IN
8
OSC
4
Primary side
Secondary side
-SENSE
PG/ID 2
+SENSE 1
3 V ADJ
4 - SENSE
CLK OUT
7
Internal
temperature
sensor
3
V ADJ
+
OUTPUT -
26 27 28 29
21 22 23 24
TEMP MON
11
Introduction
The AK80A is an isolated, single output DC to DC
converter module, providing up to 240W output with a
maximum baseplate operating temperature of 85°C with
no derating. The AK80A features adjustable output
voltage, current limit adjust and temp monitor.
Special Features
•
High Efficiency - up to 87%
•
500KHz fixed switching frequency
•
85°C baseplate/ case operating temperature - no
•
•
•
•
•
•
•
•
derating
Low output ripple and noise
Excellent transient response
High Reliability - over 1 million hours MTBF
Wide input voltage range
Parallelable with current share
Temperature monitoring output
Overtemperature and short circuit protection
Adjustable output voltage and current limit
4
AMPSS
®
Reference Manual
Rev. 06 Aug 00
Specifications
Ordering Information
M o de l N u m be r
A
A
A
A
A
A
A
A
A
A
K
K
K
K
K
K
K
K
K
K
80A
80A
80A
80A
80A
80A
80A
80A
80A
80A
-0 4 8 L -0 3 3 F 5 0
-0 4 8 L -0 5 0 F 4 0
-0 4 8 L -1 2 0 F 1 8
-0 4 8 L -1 5 0 F 1 6
-0 4 8 L -2 4 0 F 1 0
-0 2 4 L -0 3 3 F 4 0
-0 2 4 L -0 5 0 F 3 0
-0 2 4 L -1 2 0 F 1 4
-0 2 4 L -1 5 0 F 1 2
-0 2 4 L -2 4 0 F 0 8
In p u t
V o l ta g e
48V
48V
48V
48V
48V
24V
24V
24V
24V
24V
O u tpu t
V o l ta g e
3 .3 V
5V
12V
15V
24V
3 .3 V
5V
12V
15V
24V
O u tpu t
Current
50A
40A
18A
16A
10A
40A
30A
14A
12A
8A
O u tpu t
P owe r
165W
200W
216W
240W
240W
132W
150W
168W
180W
192W
Please contact Astec for information on other output voltages, power ranges and configurations.
Safety
UL:
CSA:
VDE:
CE:
UL1950
CSA C22.2 No.950
VDE 0805 (48Vin only)
EN60950 (48Vin only)
CE Mark (48Vin only)
Please contact Astec for information on specific module approvals.
Note:
Ensure all modules are used according to the Installation Instructions provided with each module.
All modules are designed to meet the following specifications:
ETS300-132-2
ETS300-386-1
(1)
EN55022-A
(1)
EN55022-B
(1)
EN41003
IEC6100-44
(1)
IEC6100-45
(1)
IEC950
VDE0871-A
(1)
VDE0878-A
(1)
BTNR2511(5)
(!)
(1)
Require additional external circuitry for full compliance. Please refer to application section of this manual
or contact technical support office for further information.
Rev. 05 Aug 00
AMPSS
®
Reference Manual
5
