Enpirion
®
Power Datasheet
EC2630QI 4.5A, 27W 12V DC-DC
Intermediate Voltage Bus Converter
Description
The EC2630QI is a high density, high efficiency
DC-DC intermediate voltage bus converter which
generates an output voltage that tracks one half the
input voltages and is designed to provide power to
Altera’s highly integrated Enpirion DC-DC point-of-
load converter products for a complete 12V
solution. EC2630QI provides the means to
condition power from a 12V input, to supply multiple
lower voltage converters while enabling high
efficiency and small PCB area. Due to its extremely
high efficiency, it avoids the common two stage
power conversion penalty and is equivalent to or
better than direct regulation.
This Altera Enpirion solution significantly helps in
system design and productivity by offering greatly
simplified board design, layout and manufacturing.
In addition, a reduction in the number of vendors
required for the complete power solution helps to
enable an overall system cost savings. All of
Altera’s Enpirion products are RoHS compliant.
Features
Complete power conditioning solution from a
12V power bus
5.5mm x 5.5mm x 3mm QFN Package
Total solution size of 228mm
2
Input voltage range of 10V to 13.2V
The output voltage is one half of the input
voltage
High and flat efficiency, up to 97.5%
4.5A Continuous Output Current Capability
Master/Slave Mode for Parallel Operation
VIN_OK pin
Thermal shutdown, short circuit, and UVLO
protection
RoHS compliant, MSL level 3, 260C reflow
Applications
Applications requiring down conversion from a
12V bus to an output voltage with high
efficiency.
Systems requiring multiple voltage rails such as
FPGA and ASIC.
Enterprise, Industrial, Embedded, and
Telecommunication applications.
Multi-rail computer & network interface
applications such as PCIe and ATCA AMC
cards.
98
Efficiency vs. Output Current
EC2630QI
V
IN
PVIN
V
OUT
EFFICIENCY (%)
VOUT
CFLYP
96
94
22µF
3x
1206
30.1
0402
22µF
1206
AVIN
PGND
V3P3
CFLYN
VBOOT
PGND
FADJ
Cfly
Cout
92
90
CONDITION
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
0.1µF
88
86
84
VIN = 10V
VIN = 11V
VIN = 12V
VIN = 13.2V
0.1µF
AGND
100kΩ
0402
Figure 1.
Typical Application Schematic Optimized
for Maximum Efficiency
82
2
0
1
3
4
OUTPUT CURRENT (A)
Figure 2.
Highest Efficiency in Smallest Solution
Size
1
05996
November 17, 2016
www.altera.com/enpirion
Rev C
4.5
0.5
1.5
2.5
3.5
EC2630QI
Ordering Information
Part Number
Package Markings
T
AMBIENT
Rating (°C)
Package Description
EC2630QI
EC2630QI
-40 to +85
36 pin (5.5mm x 5.5mm x 3mm) QFN Package
EVB-EC2630QI
EC2630QI
QFN Evaluation Board
Packing and Marking Information:
www.altera.com/support/reliability/packing/rel-packing-and-marking.html
Pin Assignments (Top View)
37
Figure 3.
Pin-out diagram (Top View)
NOTE A:
NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. Failure
to follow this guideline may result in damage to the device.
NOTE B:
The white dot on the top left of the device package is the pin-1 indicator.
2
05996
November 17, 2016
www.altera.com/enpirion
Rev C
EC2630QI
Pin Descriptions
I/O Legend:
P=Power
G=Ground
NC=No Connect
I=Input O=Output
I/O=Input/output
PIN
1
2
3, 8
4
NAME
V3P3
FADJ
GND
VIN_OK
I/O
O
I/O
G
O
FUNCTION
Internal Regulated Supply Output. Connect bypass capacitor from V3P3 to GND.
Frequency Adjust pin used to set the switching frequency. Connect a 100kΩ resistor
from FADJ pin to GND.
Internally Regulated Supply Ground. Must tie directly to ground plane with a via right
next to each pin.
Open drain transistor for power system state indication for nominal 12V operation.
VIN_OK is logic high when Vin is greater than 9V. This pin can be used to control the
ENABLE signals of downstream converters powered by the EC2630. Refer to the
Application Schematic section for more details on sequencing.
NO CONNECT – Do not electrically connect these pins to each other or to any other
electrical signal. CAUTION: May be internally connected.
Main Input Supply
Master/Slave pin for clock synchronization. Logic low = Master. Logic high = Slave.
Use in master mode for standalone devices.
External Synchronizing Clock Input, input accepted in Slave mode from an EC2630
operating in master mode. May be left floating when used in master mode.
Synchronizing Clock Output. Provides clock input to EC2630s in slave mode.
Power ground for the switching voltage attenuator
Negative Terminal of Flying Capacitor
Converter Output Voltage
Positive Terminal of Flying Capacitor
Main Input Supply
Internal power Supply for high-side drive. Connect a 0.1uF/25V boot-strap capacitor
from VBOOT to CFLYN.
Quiet Input Supply for Controller. Connect to PVIN through an RC filter. Refer to
application schematics for details
This pad is a thermal ground. It must be thermally and electrically connected to the
ground plane through a matrix of vias.
5, 7,
10, 36
6
9
11
12
13-18
19-21
22-24
25-27
28-33
34
35
37
NC
PVIN
M/S
SYNC_I
SYNC_O
PGND
CFLYN
VOUT
CFLYP
PVIN
VBOOT
AVIN
TGND
NC
P
I
I
O
G
I/O
O
I/O
P
I/O
P
G
Absolute Maximum Ratings
CAUTION:
Absolute Maximum ratings are stress ratings only. Functional operation beyond recommended operating
conditions is not implied. Stress beyond absolute maximum ratings may cause permanent damage to the device.
Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
PARAMETER
Input Supply Voltage – PVIN, AVIN
Input Voltage – VIN_OK, CFLYN, CFLYP, Vout
Input Voltage – V3P3, FADJ, M_S, SYNC_I, SYNC_O
Input Voltage – VBOOT
Storage Temperature Range
Maximum Operating Junction Temperature
Reflow Temp, 10 Sec, MSL3 JEDEC J-STD-020A
ESD Rating (based on Human Body Model): AVIN
ESD Rating (based on Human Body Model): All other pins
ESD Rating (based on Charged Device Model)
SYMBOL
V
IN
MIN
-0.5
-0.5
-0.5
-0.5
MAX
13.5
VIN
3.5
VIN + 8
150
150
260
UNITS
V
V
V
V
°C
°C
°C
V
V
V
T
STG
T
J-ABS MAX
Positive
Negative
-65
1500
2000
2000
500
3
05996
November 17, 2016
www.altera.com/enpirion
Rev C
EC2630QI
Recommended Operating Conditions
PARAMETER
Input Voltage Range
PVIN Slew Rate
Continuous Output Current
Operating Junction Temperature
I
OUT_MAX
T
J
-40
SYMBOL
V
IN
MIN
10
0.5
TYP
12
MAX
13.2
5
4.5
+125
UNITS
V
V/ms
A
°C
Thermal Characteristics
PARAMETER
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Resistance: Junction to Case
Thermal Resistance: Junction to Ambient
SYMBOL
T
SD
T
SDH
JC
JA
MIN
TYP
155
25
1
19
MAX
UNITS
°C
°C
°C/W
°C/W
Electrical Characteristics
NOTE: V
IN
=12.0V over operating temperature range unless otherwise noted. Typical values are at T
A
= 25°C.
PARAMETER
Operating Boot Strap
Voltage
Internal Regulated Supply
Output
Input under Voltage Lockout
Input Voltage Indication
Rising
Input Voltage Indication
Falling
No-Load Operating Current
Switching Frequency
(Internal Oscillator)
Frequency Adjust Voltage
Output Voltage as a fraction
of input voltage
Output Impedance
M_S input Logic Low
M_S input Logic High
Clock Input Logic Low
Clock Input Logic High
Clock Output Logic Low
Clock Output Logic High
VIN_OK, sink capability
Current Balance
SYMBOL
VBOOT
V3P3
V
UVLO
VIN_OK
VIN_OK
I
OP
F
OSC
V
FADJ
V
OUT
R
OUT
M_S_I_VIL
M_S_I_VIH
SYNC_I_VIL
SYNC_I_VI
H
SYNC_O_V
OL
SYNC_O_V
OH
@ 1mA
TEST CONDITIONS
@ Vin =12V, with 0.1uF capacitor
between VBOOT and CFLYN
@ Vin =12V
MIN
TYP
17
MAX
UNITS
V
2.97
4.5
8
7
3.3
5
9
8
16
3.63
5.5
10
9
V
V
V
V
mA
@ 12V input and 115kHz switching
R
FADJ
= 100 k
68
115
1.2
165
kHz
V
10V ≤ V
IN
≤ 13.2V,
0A ≤ I
LOAD
≤ 4A
V
OUT
/I
LOAD
R
FADJ
= 100 K
45
90
-0.3
V3P3-
0.6
V3P3
50
%
m
0.3
V3P3 +
0.3
0.3
V
V
V
V
V
V
1.8
3.3
0.3
V3P3-
0.6
1
mA
%
I
OUT
With 2 to 4 Converters in Parallel, the
Difference Between Nominal and Actual
Current Levels.
+/-10
4
05996
November 17, 2016
www.altera.com/enpirion
Rev C
EC2630QI
Typical Performance Curves
Output Voltage as a fraction of VIN at
different Temperature
51
50
CONDITION
PVIN=10
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
51
Output Voltage as a fraction of VIN at
different Temperature
CONDITION
PVIN=11
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
50
Vout / Vin (%)
49
48
47
46
Temprature = -40C
Temprature = 25C
Temprature = 85C
Vout / Vin (%)
49
48
47
46
Temprature = 85C
Temprature = -40C
Temprature = 25C
45
45
0
1
2
3
2
0
1
3
4
1.5
0.5
2.5
3.5
4
4
8
9
0.5
1.5
2.5
3.5
4.5
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Output Voltage as a fraction of VIN at
different Temperature
51
51
CONDITION
PVIN=12
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
Output Voltage as a fraction of VIN at
different Temperature
CONDITION
PVIN=13.2
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
50
Vout / Vin (%)
49
48
47
46
Temprature = 85C
50
Vout / Vin (%)
49
48
47
46
Temprature = 85C
Temprature = -40C
Temprature = 25C
Temprature = -40C
Temprature = 25C
45
45
0
3
0
1
2
4
1
2
3
3.5
0.5
1.5
2.5
3.5
4.5
0.5
1.5
2.5
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Parallel current Deviation
98
Efficiency vs. Output Current
OUTPUT CURRENT Deviation
( Imaster-Islave ) (mA)
8
7
6
96
94
EFFICIENCY (%)
5
4
3
2
1
0
0
1
CONDITION
PVIN=12
C
IN
=3x22uF (16V, 1206)
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
2
3
4
5
6
7
TOTAL OUTPUT CURRENT (A)
92
90
CONDITION
C
IN
=3x22uF (16V, 1206),
C
OUT
=C
FLY
=3X47uF (10V, 1206)
R
FADJ
= 100K
88
86
84
VIN = 10V
VIN = 11V
VIN = 12V
VIN = 13.2V
82
2
0
1
3
4
OUTPUT CURRENT (A)
4.5
0.5
1.5
2.5
3.5
5
05996
November 17, 2016
www.altera.com/enpirion
Rev C
4.5
4.5
京公网安备 11010802033920号
EEWORLD
