DELTA D12S400

FEATURES
Š
High Efficiency:
94% @ 12Vin, 5.0V/80A out
Š
Wide input range: 5.0V~13.2V
Š
Output voltage programmable from
0.8375Vdc to 5.0Vdc via external resistors
Š
No minimum load required
Š
Fixed frequency operation
Š
Input UVLO, output OCP, OVP, OTP.
Š
Remote On/Off (Positive logic)
Š
Power Good Function
Š
RoHS 6/6 compliant
Š
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
Delphi D12S400 Non-Isolated Point of Load
DC/DC Modules: 5~13.2Vin, 0.8375~5.0V/ 80A output
OPTIONS
The D12S400, 5.0~13.2V wide input, single output, non-isolated point
of load DC/DC converter is the latest offering from a world leader in
power systems technology and manufacturing -- Delta Electronics, Inc.
The D12S400 and ND/NE product families are part of the second
generation, non-isolated point-of-load DC/DC power modules which cut
the module size by almost 50% in most of the cases compared to the
first generation NC series POL modules for networking and data
communication applications. D12S400 product provides up to 80A in
the same form factor of the second generation 60A datacom POLs and
the output can be resistor trimmed from 0.8375Vdc to 5.0Vdc. It
provides a highly efficient, high power and current density and very
cost effective point of load solution. With creative design technology
and optimization of component placement, these converters possess
outstanding electrical and thermal performance, as well as extremely
high reliability under highly stressful operating conditions.
DATASHEET
DS_D12S400_10032008
APPLICATIONS
Š
Telecom / DataCom
Š
Distributed power architectures
Š
Servers and workstations
Š
LAN / WAN applications
Š
Data processing applications
TECHNICAL SPECIFICATIONS
(All data below are tested at operating ambient temperature 25°C, air flow 300LFM, 5.0Vout, unless otherwise stated.)
PARAMETER
NOTES and CONDITIONS
D12S400
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Operating Temperature
Storage Temperature
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
OUTPUT CHARACTERISTICS
Output Voltage Adjustment Range
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total output range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Output Current Range
Output Voltage Over-shoot at Start-up
Output Voltage Under-shoot at Power-Off
Output DC Current-Limit Inception
DYNAMIC CHARACTERISTICS
Output Dynamic Load Response
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time
Turn-On Transient
Start-Up Time, from On/Off Control
Start-Up Time, from input power
Power Good Delay
Minimum Output Capacitance
Maximum Output Startup Capacitive Load
Minimum Input Capacitance
EFFICIENCY
Vo=1.0V
Vo=1.2V
Vo=1.5V
Vo=1.8V
Vo=2.5V
Vo=3.3V
Vo=5.0V
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control
Logic High
Logic Low
GENERAL SPECIFICATIONS
Calculated MTBF
Weight
Over-Temperature Shutdown
DS_D12S400_10032008
Continuous
With appropriate air flow and de-rating as Figure 28
Vo≦3.3V
Vo=5.0V
-0.3
0
-40
5.0
7.5
Vo≦3.3V, Io=1A
Vo≦3.3V, Io=1A
Io=Io_min to Io_max
Vin=Vin_min to Vin_max
Tc=0°C to 85°C
Over load, line, temperature regulation and set point
5Hz to 20MHz bandwidth
Full Load, 10uF Tan cap & 1uF ceramic, total input & output range
Full Load, 10uF Tan cap & 1uF ceramic, total input & output range
12.0
12.0
Max.
Units
13.8
85
125
V
°C
°C
13.2
13.2
V
V
4.8
4.5
0.3
100%Load, 12Vin, 5.0Vout
Total input range
Remote OFF
Measured at remote sense pin
Typ.
38
750
35
V
V
V
A
mA
mA
0.8375
-1.5
5.0
+1.5
V
%Vo
-0.5
-0.5
-1.0
-3.5
+0.5
+0.5
+1.0
+3.5
%Vo
%Vo
°C
%Vo
0
50
20
80
0.5
100
Vin=12V, Turn ON
Vin=12V, Turn OFF
Hiccup mode
135
mV
mV
A
%
mV
%Iomax
Without output cap.
12Vin, 5.0Vout, 0A to 20A, 10A/uS
12Vin, 5.0Vout, 20A to 0A, 10A/uS
Settling to be within regulation band (to 10% Vo deviation)
170
170
20
mV
mV
µs
From Enable high to 90% of Vo
From Vin=12V to 90% of Vo
From PG to 90% of Vo
Full Load
5
10
5
0
0
2200
5000
ms
ms
ms
µF
µF
µF
Vin=12V, Io=80A
Vin=12V, Io=80A
Vin=12V, Io=80A
Vin=12V, Io=80A
Vin=12V, Io=80A
Vin=12V, Io=80A
Vin=12V, Io=80A
85.0
86.0
88.5
89.5
91.5
92.5
94.0
%
%
%
%
%
%
%
Fixed
Positive logic (internally pulled high)
Module On (or leave the pin open)
Module Off
500
KHz
12Vin, 5.0Vout, Full load, 55℃, 400LFM
12Vin, 5.0Vout, Full load, 25℃, 400LFM
Refer to Figure 28 for the measuring point
1.5
-0.3
5.5
0.8
1.0
1.4
35.0
125
V
V
M hours
M hours
grams
°C
2
Effciency
95
90
85
80
75
70
65
60
Effciency
95
effciency (%)
effciency (%)
ELECTRICAL CHARACTERISTICS CURVES
5V
12V
13.2V
90
85
80
5V
12V
13.2V
75
70
10
20
30
40
50
60
70
80
10
20
output current (A)
effciency (%)
effciency (%)
5V
12V
13.2V
20
30
40
50
60
70
20
40
50
60
effciency (%)
effciency (%)
Figure 5: Converter efficiency vs. output current
(3.3V output voltage)
40
50
60
70
80
Effciency
100
output current (A)
DS_D12S400_10032008
30
Figure 4: Converter efficiency vs. output current
(2.5V output voltage)
5.0V
12V
13.2V
30
80
output current (A)
Effciency
20
70
5V
12V
13.2V
10
80
Figure 3: Converter efficiency vs. output current
(1.8V output voltage)
10
60
Effciency
100
95
90
85
80
75
output current (A)
95
90
85
80
75
70
65
50
Figure 2: Converter efficiency vs. output current
(1.5V output voltage)
Effciency
10
40
output current (A)
Figure 1: Converter efficiency vs. output current
(1.2V output voltage)
95
90
85
80
75
70
65
30
70
95
90
85
7.5V
12V
13.2V
80
75
80
10
20
30
40
50
60
70
80
output current (A)
Figure 6: Converter efficiency vs. output current
(5.0V output voltage)
3
ELECTRICAL CHARACTERISTICS CURVES (CONTINUED)
Figure 7: Output ripple & noise at 12Vin, 1.2V/80A out
(10mv/div, 1mS/div)
Figure 8: Output ripple & noise at 12Vin, 1.5V/80A out
(10mv/div, 1mS/div)
Figure 9: Output ripple & noise at 12Vin, 1.8V/80A out
(10mv/div, 1mS/div)
Figure 10: Output ripple & noise at 12Vin, 2.5V/80A out
(10mv/div, 1mS/div)
Figure 11: Output ripple & noise at 12Vin, 3.3V/80A out
(10mv/div, 1mS/div)
Figure 12: Output ripple & noise at 12Vin, 5.0V/80A out
(10mv/div, 1mS/div)
DS_D12S400_10032008
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ELECTRICAL CHARACTERISTICS CURVES (CONTINUED)
Figure 13: Control Turn on, 1.2V/80A out
Ch1: Vo, Ch2:PG, Ch3:Enable
Figure 14: Control Turn on, 1.5V/80A out
Ch1: Vo, Ch2:PG, Ch3:Enable
Figure 15: Control Turn on, 1.8V/80A out
Ch1: Vo, Ch2:PG, Ch3:Enable
Figure 16: Control Turn on, 2.5V/80A out
Ch1: Vo, Ch2:PG, Ch3:Enable
Figure 17: Control Turn on, 3.3V/80A out)
Ch1: Vo, Ch2:PG, Ch3:Enable
Figure 18: Control Turn on, 5V/80A out
Ch1: Vo, Ch2:PG, Ch3:Enable
DS_D12S400_10032008
5
ELECTRICAL CHARACTERISTICS CURVES (CONTINUED)
Test condition: Slew rate: 10A/us, Load Step: 25% of max. load, Output without Caps.
Figure 19: Typical transient response, 1.2V output
CH1:Vo, Ch4:Io,10A/div
Figure 20: Typical transient response, 1.5V output
CH1:Vo, Ch4:Io,10A/div
Figure 21: Typical transient response, 1.8V output
CH1:Vo, Ch4:Io,10A/div
Figure 22: Typical transient response, 2.5V output
CH1:Vo, Ch4:Io, 10A/div
Figure 23: Typical transient response, 3.3V output
CH1:Vo, Ch4:Io,10A/div
Figure 24: Typical transient response, 5.0V output
CH1:Vo, Ch4:Io,10A/div
DS_D12S400_10032008
6
DESIGN CONSIDERATIONS
FEATURES DESCRIPTIONS
The D12S400 uses a voltage mode controlled buck topology.
The output can be trimmed in the range of 0.8375Vdc to
5.0Vdc by an external resistor from Trim(+) pin to Trim(-).
Enable (On/Off)
The converter can be turned ON/OFF by remote control with
positive on/off (ENABLE pin) logic. The converter DC output is
disabled when the signal is driven low. When this pin is floating
the module will turn on.
The converter can protect itself by entering hiccup mode
against over current and short circuit condition. Also, the
converter will shut down when an over voltage protection is
detected.
D12S400 has positive on/off logic, pulling the pin low will turn
off the unit. With the active high function, the output is
guaranteed to turn on if the ENABLE pin is driven above
1.5V. The output will turn off if the ENABLE pin voltage is
pulled below 0.8V. The D12S400 is turned on if the ENABLE
pin is floating.
The ENABLE input can be driven in a variety of way as
shown in Figures 25.
Safety Considerations
It is recommended that the user to provide a very fast-acting
type fuse in the input line for safety. The output voltage set
point and the output current in the application could define the
amperage rating of the fuse.
Unit
Vin
Vout
Enable
Trim
GND
GND
Figure 25: Enable Input drive circuit
Over-Current and Short-Circuit Protection
The D12S400 has non-latching over-current and short circuit
protection circuitry. When over current condition occurs, the
module goes into the non-latching hiccup mode. When the
over-current condition is removed, the module will resume
normal operation.
An over current condition is detected by measuring the
voltage drop across the Rds(on) of low side MOSFET.
Rds(on) is affected by temperature, therefore ambient
temperature will affect the current limit inception point.
Output Over Voltage Protection (OVP)
The converter will shut down when an output over voltage
protection is detected. Once the OVP condition is detected,
controller will latch off and can only reset by input voltage or
ON/OFF.
DS_D12S400_10032008
7
FEATURES DESCRIPTIONS (CONT.)
Output Voltage Programming
Power Good
The output voltage of the D12S400 is trimmable by
connecting an external resistor between the Trim(+) and
Trim(-) pins as shown in Figure 26 and the typical trim
resistor values are shown in Table 1.
Vin
Vout
Enable
Trim(+)
D12S400 converters do not have built-in current sharing
(paralleling) ability. Hence, paralleling of multiple D12S400
converters are not recommended.
Rtrim
Trim(-)
Figure 26: Trimming Output Voltage
The D12S400 module has a trim range of 0.8375V to
5.0V. The trim resistor equation for the D12S400 is:
Rtrim(Ω) =
The power good signal is pulled low when an input under
voltage, output over voltage, or output over current conditions is
detected or when the converter is disabled by ENABLE pin.
Paralleling
Unit
GND
The converter provides an open collector signal called Power
Good. This output pin uses positive logic and is open-drain. This
power good output is able to sink 4mA.
1.675
Vout − 0.8375
Vout is the output voltage set point
Rtrim is the resistance between Trim(+) and Trim(-)
Rtrim values should not be less than 360Ω
Output Voltage
Rtrim (Ω)
0.8375V
+1.0V
+1.2V
+1.5V
+1.8V
+2.5V
+3.3V
+5.0V
open
10.3K
4.631K
2.528K
1.74K
1.008K
680
402
Output Capacitance
There is output capacitor on the D12S400. Hence, no external
output capacitor is required for stable operation.
Reflected Ripple Current and Output Ripple and
Noise Measurement
The measurement set-up outlined in Figure 27 has been used
for both input reflected/ terminal ripple current and output
voltage ripple and noise measurements on D12S400
converters.
Input reflected current measurement point
Ltest
DC-DC Converter
Vin+
Cs
Cin
Load
1uF
Ceramic
10uF
Tan
Output voltage ripple noise measurement point
Cs=330μF OS-CON cap x 1, Ltest=1μH, Cin=330μF
OS-CON cap x 1,
Figure 27: Input reflected ripple/ capacitor ripple current and
output voltage ripple and noise measurement setup for
D12S400
Table 1: Typical trim resistor values
DS_D12S400_10032008
8
THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal De-rating
THERMAL CURVES
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =1V (Worse Orientation)
90
Output Current (A)
80
70
60
Natural
Convection
50
40
30
100LFM
400LFM
200LFM
500LFM
300LFM
600LFM
20
10
Heat can be removed by increasing airflow over the
module. The module’s maximum hot spot temperature is
defined at 125 ℃ . To enhance system reliability, the
power module should always be operated below the
maximum operating temperature. If the temperature
exceeds the maximum module temperature, reliability of
the unit may be affected.
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 29: Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=1.0V (Worst Orientation)
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =1.2V (Worse Orientation)
90
Output Current (A)
80
THERMAL CURVES
70
60
Natural
Convection
50
40
30
100LFM
400LFM
200LFM
500LFM
300LFM
600LFM
20
10
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 30: Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=1.2V (Worst Orientation)
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =1.5V (Worse Orientation)
Figure 28: Hot spot temperature measured point
※ The allowed maximum hot spot temperature is defined at
125℃.
90
Output Current (A)
80
70
60
50
Natural
Convection
40
100LFM
400LFM
200LFM
500LFM
300LFM
600LFM
30
20
10
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 31: Output current vs. ambient temperature and air
[email protected] Vin=12V, Vout=1.5V (Worst Orientation)
DS_D12S400_10032008
9
THERMAL CURVES
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =3.3V (Worse Orientation)
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =1.8V (Worse Orientation)
90
Output Current (A)
90
80
80
70
70
60
60
50
50
40
Natural
Convection
30
100LFM
Natural
Convection
40
30
400LFM
20
200LFM
500LFM
10
300LFM
600LFM
100LFM
400LFM
20
200LFM
500LFM
10
300LFM
600LFM
0
0
25
35
45
55
65
25
75
85
Ambient Temperature (℃)
Figure 32: Output current vs. ambient temperature and air
[email protected] Vin=12V, Vout=1.8V (Worst Orientation)
Output Current (A)
35
45
55
65
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =5V (Worse Orientation)
90
Output Current (A)
400LFM
80
80
75
85
Ambient Temperature (℃)
Figure 34: Output current vs. ambient temperature and air
[email protected] Vin=12V, Vout=3.3V (Worst Orientation)
D12S400 series Output Current vs. Ambient Temperature and Air Velocity
@ Vin =12V, Vout =2.5V (Worse Orientation)
90
Output Current (A)
500LFM
70
70
600LFM
60
60
50
50
40
Natural
Convection
30
100LFM
400LFM
20
200LFM
500LFM
10
300LFM
600LFM
40
Natural
Convection
30
20
200LFM
100LFM
10
300LFM
0
0
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 33: Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=2.5V (Worst Orientation)
DS_D12S400_10032008
25
35
45
55
65
75
85
Ambient Temperature (℃)
Figure 35: Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=5.0V (Worst Orientation)
10
MECHANICAL DRAWING
DS_D12S400_10032008
11
PART NUMBERING SYSTEM
D
12
S
400
A
Type of Product
Input Voltage
Number of
Outputs
Product Series
Option Code
D - DC/DC modules
12 - 5 ~13.2V
S- Single
400 - 400W (80A, wide
output trim)
A - RoHS 6/6 lead free, positive on/off logic, 3.5mm pin length
B - RoHS 6/6 lead free, positive on/off logic, 6.3mm pin length
MODEL LIST
Model Name
Input Voltage Output Voltage Output Current
Pin Length
RoHS 6/6
complaint
Efficiency 12Vin, 5Vout
@ 100% load
D12S400 A
5.0 ~ 13.2Vdc
0.8375V ~ 5.0V
80A
3.5mm (0.140")
Yes
94.0%
D12S400 B
5.0 ~ 13.2Vdc
0.8375V ~ 5.0V
80A
6.3mm (0.250")
Yes
94.0%
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: [email protected]
Europe:
Telephone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: [email protected]
Asia & the rest of world:
Telephone: +886 3 4526107 ext. 6220~6224
Fax: +886 3 4513485
Email: [email protected]
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon
request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta
for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license
is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these
specifications at any time, without notice.
DS_D12S400_10032008
12