Data Sheet - Bel Fuse Inc.

NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
GRND-90A161
RoHS Compliant
Rev.A
Features
•
Non-Isolated
•
Input Under-Voltage Lockout
•
High Efficiency
•
OCP/SCP
•
Fixed Frequency
•
2-Wire Remote sense
•
Wide Input
•
7 bit VID Digital Voltage Programming
•
Remote On/Off
•
I2C/SMbus Available – Consult Factory
•
Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592)
•
TUV EN60950-1 Recognized (Pending)
•
UL60950-1 Recognized (UL/cUL) (Pending)
Applications
•
Networking
•
Computers and peripherals
•
Telecommunications
Description
The GRND-90A Series are non-isolated step down dc/dc converters providing up to 90 A of output current and
designed to be compatible with the Intel VRM11 requirements. Standard features include remote on/off, over
current protection, remote sense, VR_Hot signal and a power good signal. This product also makes use of
adaptive positioning to improve transient response performance. These products may be used almost anywhere
low-voltage silicon is being employed and a nominal 12 Vdc source is available. Typical applications include file
servers, work stations and other computing applications.
Part Selection
Output Voltage
Input Voltage
0.82 Vdc - 1.6 Vdc
10.8 Vdc - 13.2 Vdc
Max. Output
Current
90 A
Max. Output
Power
144 W
Typical
Efficiency
83%
Model Number
Active High
GRND-90A161
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
G R ND – 90 A 16 1
1
2
3
4 5
6
7
1---Goldfinger
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name
4---Series code
5---Wide input range (10.8-13.2V)
6---Wide output range (0.82-1.6V)
7---Enable, active high
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
1
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Absolute Maximum Ratings
Parameter
Continuous non-operating Input
Voltage
Min
Typ
Max
Unit
-0.3
-
15
V
Remote On/Off
-0.3
-
5.5
V
Ambient Temperature
0
-
70
°C
Storage Temperature
-55
-
125
°C
Notes
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Min
Typ
Max
Unit
Operating Input Voltage
10.8
12
13.2
V
Input Current (full load)
-
-
16
A
Input Current (no load)
-
-
700
mA
Remote Off Input Current
-
17
-
mA
Input Reflected Ripple Current
(rms)
-
50
100
mA
Input Reflected Ripple Current
(pk-pk)
-
150
200
mA
I2t Inrush Current Transient
-
-
1
A2s
Turn-on Voltage Threshold
9.5
10
10.5
V
Turn-off Voltage Threshold
8.4
8.9
9.4
V
Notes
With simulated source impedance of
200nH, 5Hz to 20MHz. Use 2 *
220uF/16V Oscon capacitor
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Unit
1.27
1.285
1.3
V
Adaptive Positioning
-
1.25
-
mOhm
Line Regulation
-
±5
±10
mV
Regulation Over Temperature
(0deg.C-70deg.C)
-
±5
±10
mV
Ripple and Noise (pk-pk)
-
-
25
mV
Ripple and Noise (rms)
-
-
10
mV
Ripple and Noise (pk-pk)
under worst case
-
-
30
mV
0
-
70
A
Thermal Design Current
-
-
90
A
Peak Current Rating
95
-
110
A
Output Voltage Set Point
Output Current Range
Output DC Current Limit
Notes
No load, excluding adaptive
positioning, VRM11 VID 0x32
Droop Impedance
0-20 MHz BW
over all operating input voltage, load
and temperature conditions.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
2
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Output Specifications (continued)
Parameter
Min
Typ
Max
Unit
2
Short Circuit Surge Transient
-
-
5
As
Turn on Time
-
3.5
5
mS
Overshoot at Turn on
-
-
1
%
See Note 1
3710
See Note 1
uF
Output Capacitance
Notes
Consult factory regarding external
capacitance outside of this range
Transient Response
△V50%~100%
Overshoot
-
-
50
mV
of Max Load
Settling Time
-
-
25
uS
△V100%~50%
Overshoot
-
-
50
mV
of Max Load
Settling Time
-
-
25
uS
di/dt=300A/us, Vin=12Vdc, Ta=25°C
Notes: 1. Measured with 7*470uF/7mOhm ESR SP-CAP, and 42*10uF/1206 ceramic capacitors on output.
2. All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Min
Typ
Max
Unit
81
83
-
%
-
400
-
kHz
100
-
110
°C
Over Voltage Protection
-
Vo,set +
0.175
-
V
Weight
-
46
-
g
Efficiency
Switching Frequency
Over Temperature Alert
FIT
500
-
3.80 x 1.06 x 0.77
96.52 x 26.80 x 19.46
-
Notes
Vin =12V, Iout=70A; VID=0x32
Calculated Per Bell Core SR-332
(Vin=12 V, Io=70A, Ta = 25 °C,
9
FIT=10 /MTBF)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Note: All specifications are typical at 25 °C unless otherwise stated.
Remote On/Off
Parameter
Signal Low (Unit Off)
Signal High (Unit On)
Current Sink
Active High
Min
-0.3
Typ
-
Max
0.4
Unit
V
0.8
-
5.5
V
0
-
1
mA
Notes
The remote on/off pin open, Unit on.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
3
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Thermal Derating Curves
②
③
④
⑤
①
The thermal reference point Tref is shown above. For reliable operation this temperature should not exceed
110°C. The output power of the module should not exceed the rated power for the module.
Vin=12V, VID=0x32
Maximum junction temperature of semiconductors derated to 120 degree C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
4
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Efficiency Data
90.00%
EFFICIENCY
85.00%
80.00%
VID=0x7E
VID=0x32
75.00%
VID=0x02
70.00%
65.00%
7A
17.5A
35A
52.5A
70A
OUTPUT CURRENT(A)
Ripple and Noise Waveforms
Ripple and noise at 12Vdc input, VID=0x32, Iout=0A
Ripple and noise at 12Vdc input, VID=0x32, Iout=70A
Note: Ripple and noise at 0-20MHz BW, and Ta=25 deg C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
5
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Sep. 08, 2009
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Transient Response Waveforms
VID=0x32 45A-90A Load Transients
VID=0x32 90A-45A Load Transients
Note: Transient Response at Vin=48V, di/dt=5A/uS, with typical cap bank on output, and Ta=25 deg C.
Over Current Protection
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting
circuitry and can endure current limiting for a few mili-seconds. If the overcurrent condition persists beyond a few
milliseconds, the module will shut down into hiccup mode. The module operates normally when the output
current goes into specified range.
Vin=12V, VID=0x32
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
6
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Sep. 08, 2009
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Startup & Shutdown
Rise time
VID=0x32,
Vin=12V,
Iout=70A
Startup time
VID=0x32,
Vin=12V,
Iout=70A,
Ch1: Vout
Ch3: OUTEN
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
7
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Remote Sense
This module has remote sense compensation feature. It can minimize the effects of resistance between
module’s output and load in system layout and facilitates accurate voltage regulation at load terminals or
other selected point.
1. The remote sense lines carries very little current and hence do not require a large cross-sectional area.
2. This module compensates for a maximum drop of 10% of the nominal output voltage.
3. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the
system are incorporated within the feedback loop of this module. It can make an effect on the module's
compensation, affecting the stability and dynamic response. A 0.1uF ceramic capacitor can be
connected at the point of load to de-couple noise on the sense wires.
4. Recommend the connection of remote sense compensation as below figure. There are a resistor RS+
(51.1 ohm) from Vo+ to Sense+ and a resistor RS- (51.1 ohm)) from Vo- to Sense- inside of this module.
RS+
Vo+
Sense+
Load
RS-
Sense-
V o-
5. If not using remote sense compensation, please connect sense directly to output at module's pin, that is,
connect sense+ to Vo+ and sense- to Vo- at module's pin, the shorter the better. See below figure.
RS+
V o+
Sense+
Load
RS-
Sense-
Vo-
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
8
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Input Under-voltage Lockout
Input Current
Under-voltage Lockout
Voltage Falling
V1=8.9V
V2=10V
Voltage Rising
V1
V2
Input Voltage (V)
Power Good
1. This module has a power good indicator output. Power good pin used positive logic and is open collector.
2. Power good pin can sink 1mA.
3. The maximum voltage pulled up externally on Power Good pin should not exceed 5V.
4. When the output is within 10% of the VID setting, the power good pin will be pulled high.
Typical Start-up Using Remote ON/OFF(Vin=12.0V, VID=0x32, Io=0A)
Ch1: OUTEN
Ch2: PWRGD
Ch4: VOUT
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
9
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Mechanical Outline
Row A
Row B
Pin
Function
Pin
Function
Pin
Function
Pin
Function
1
PWRGD
25-26
GND
139-140
GND
164
VBIAS
2
SC
27-30
VOUT
135-138
VOUT
163
SD
3
OUTEN
31-34
GND
131-134
GND
162
LL0
4
LL1
35-38
VOUT
127-130
VOUT
161
VID6
5
VID5
39-42
GND
123-126
GND
160
VID4
6
VID3
43-46
VOUT
119-122
VOUT
159
VID2
7
VID1
47-48
GND
117-118
GND
158
VID0
8
Reserved
49-52
VOUT
113-116
VOUT
157
Reserved
-SENSE
9
+SENSE
53-56
GND
109-112
GND
156
10
SP
57-60
VOUT
105-108
VOUT
155
VIDSEL
11
VR_HOT
61-64
GND
101-104
GND
154
VRM_PRES
12
Reserved
65-68
VOUT
97-100
VOUT
153
BUSS ADD
Key
-
Key
69-70
GND
95-96
GND
-
13-16
VIN
71-74
VOUT
91-94
VOUT
149-152
VIN
17-20
GND
75-78
GND
87-90
GND
145-148
GND
21-24
VOUT
79-82
VOUT
83-86
VOUT
141-144
VOUT
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered
using a peak solder temperature of no more than 260 ºC for less than 5 seconds.
Note:
1) Undimensioned components are shown for visual reference only.
2) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
10
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
Signal Definitions
Vin
Input power to the converter
GND
Common return for both input and output
VID0, VID1, VID2,
VID3, VID4, VID5,
VID6
Logic level inputs used to set the output voltage, refer to VID table. Connect VID0 thru VID6
pins to open-drain outputs with external pull-up resistors. Valid logic low is -0.3V to 0.4V,
valid logic high level is 0.8V to 5.5V.
VIDSEL
Digital input used to select between extended VR10 and VR11 VID tables. Internally pulled
up to 3.3V to select VRM11.
PWRGD
The open drain power good signal indicates the output voltage is within 10% of the VID
setpoint.
Vsense+, VsenseVOUT
Remote voltage sense lines. Connect these at the point of load, to VOUT and GND
respectively.
Output voltage available to the load.
OUTEN
Logic level input used to enable the converter when high. Valid logic low is -0.3V to 0.4V,
valid logic high level is 0.8V to 5.5V
LL0/LL1
Load line select pins. Working in conjunction with VID_SEL, LL0/LL1 are used to select
load line slope. Currently only 1.25mOhm slope is supported. Module can be configured to
support multiple load line slopes.
SC SD
Optional serial clock and data pins respectively for SMBus interface.
SP
VR_HOT#
Optional programming pin for set point and over current protection mode.
Open-drain output signal, pulled actively low indicating a thermal event has been detected
on the VRM.
VRM_PRES
Signal used by system to indicate the VRM is present in the design.
BUSS_ADD
Optional addressing pin when using SMBus feature.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
11
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep. 08, 2009
VID CODES (VRM11.0 VID CODES)
HEX
(VID6 - VID0)
Vout
(VDC)
HEX
(VID7 - VID0)
Vout
(VDC)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
OFF
OFF
1.60000
1.59375
1.58750
1.58125
1.57500
1.56875
1.56250
1.55625
1.55000
1.54375
1.53750
1.53125
1.52500
1.51875
1.51250
1.50625
1.50000
1.49375
1.48750
1.48125
1.47500
1.46875
1.46250
1.45625
1.45000
1.44375
1.43750
1.43125
1.42500
1.41875
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1.31250
1.30625
1.30000
1.29375
1.28750
1.28125
1.27500
1.26875
1.26250
1.25625
1.25000
1.24375
1.23750
1.23125
1.22500
1.21875
1.21250
1.20625
1.20000
1.19375
1.18750
1.18125
1.17500
1.16875
1.16250
1.15625
1.15000
1.14375
1.13750
1.13125
1.12500
1.11875
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1.41250
1.40625
1.40000
1.39375
1.38750
1.38125
1.37500
1.36875
1.36250
1.35625
1.35000
1.34375
1.33750
1.33125
1.32500
1.31875
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1.11250
1.10625
1.10000
1.09375
1.08750
1.08125
1.07500
1.06875
1.06250
1.05625
1.05000
1.04375
1.03750
1.03125
1.02500
1.01875
HEX
(VID7 - VID0)
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Vout
(VDC)
1.01250
1.00625
1.00000
0.99375
0.98750
0.98125
0.97500
0.96875
0.96250
0.95625
0.95000
0.94375
0.93750
0.93125
0.92500
0.91875
0.91250
0.90625
0.90000
0.89375
0.88750
0.88125
0.87500
0.86875
0.86250
0.85625
0.85000
0.84375
0.83750
0.83125
0.82500
0.81875
Note: VIDs with VID7=1 not
shown because this VRM does
not have a VID7 pin.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
12
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input, 0.82 Vdc - 1.6 Vdc Output, VRM11.0 Compatible
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Sep 08, 2009
Revision History
Date
Revision
2009-9-8
A
Changes Detail
Approval
First release
Jack Fan
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2009 Bel Fuse Inc. Specifications subject to change without notice. 090809
13
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com