BEL VRP3

NON-ISOLATED DC/DC CONVERTERS
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
VRP3-90ExA0
RoHS Compliant
Rev.G
Features
•
Non-Isolated
•
Over/Under Voltage Protection
•
High Efficiency
•
OCP/SCP
•
Fixed Frequency
•
2-Wire Remote sense
•
Wide Input
•
2 bit VID Digital Voltage Programming
•
Remote On/Off
•
Open-drain Power Good Output
•
•
IMON Pin for Output Current Monitoring
Power State Indicator(PSI#) Pin for Phase Dropping and Higher
Efficiency During Light Load States
Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592)
•
Applications
•
Networking
•
Computers and peripherals
•
Telecommunications
Description
The VRP3-90ExA0 series are non-isolated step down DC/DC converters providing up to 90 A output current.
Standard features include remote on/off, remote sense, 2 bit VID digital voltage programming, a power good
signal, over voltage and under voltage protection, over current protection, current monitor and power State
Indicator (PSI#). This product may be used almost anywhere low-voltage silicon is being employed and a
nominal 12V source is available. Typical applications include telecommunications, networking and other
computing applications.
Part Selection
Output Voltage
Input Voltage
6.5 Vdc - 13.2 Vdc
Max. Output
Current
90 A
Max. Output
Power
200 W
Typical
Efficiency
85%
Model Number
Active High
VRP3-90E1A0
1.21 Vdc - 2.1Vdc
1.2 Vdc - 2.1Vdc
6.5 Vdc - 13.2 Vdc
90 A
200 W
85%
VRP3-90E2A0
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
V R P3 – 90 E 1A 0
1 2
3
4
5
6
7
1---Vertical mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name, SIP
4---Series code, output current 90A
5---Wide input range (6.5-13.2V)
6---“1A”, “2A” Wide trim range
7---Suffix
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Absolute Maximum Ratings
Parameter
Continuous non-operating Input
Voltage
Min
Typ
Max
Unit
-0.3
-
15
V
Remote On/Off
-0.3
-
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
Operating Input Voltage
Min
6.5
Typ
12
Max
13.2
Unit
V
Input Current (full load)
-
-
35
A
Input Current (no load)
-
500
700
mA
Remote Off Input Current
-
10
25
mA
Input Reflected Ripple Current
(rms)
-
10
25
mA
Input Reflected Ripple Current
(pk-pk)
-
25
50
mA
I t Inrush Current Transient
-
-
1
As
Turn-on Voltage Threshold
5.4
5.7
6.0
V
Turn-off Voltage Threshold
4.8
5.1
5.4
V
2
Notes
With simulated source impedance of
100nH, 5Hz to 20MHz. Use 2 *
470uF/16V Oscon capacitor.
2
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
1.192
1.330
1.478
2.069
Typ
1.210
1.350
1.500
2.100
Max
1.228
1.370
1.523
2.132
Unit
V
V
V
V
Rtrim=7.86KΩ
Rtrim=3.79KΩ
Rtrim=1.24KΩ
1.182
1.478
1.773
2.069
1.20
1.50
1.80
2.10
1.218
1.523
1.827
2.132
V
V
V
V
VID1,VID0=00
VID1,VID0=01
VID1,VID0=10
VID1,VID0=11
Load regulation
-
-
12
mV
Line Regulation
-
5
10
mV
Regulation Over Temperature
(0deg.C-70deg.C)
-
10
20
mV
Ripple and Noise (pk-pk)
-
25
40
mV
Ripple and Noise (rms)
-
10
20
mV
Ripple and Noise (pk-pk)
under worst case
-
-
60
mV
Output Current Range
0
-
90
A
100
-
130
A
Output Voltage Set Point
VRP3-90E1A0
Output Voltage Set Point
VRP3-90E2A0
Output DC Current Limit
Notes
20MHz BW, Co=3600uF.
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Output Specifications (continued)
Parameter
Turn on Delay Time
Rise Time
Min
-
Typ
3.5
Max
5
Unit
mS
-
2.5
5
mS
Overshoot at Turn on
-
-
1
%
Output Capacitance
-
3600
-
uF
mV
Notes
Transient Response
△V50%~100%
Overshoot
-
-
200
of Max Load
Settling Time
-
-
150
uS
△V100%~50%
Overshoot
-
-
200
mV
of Max Load
Settling Time
-
-
150
uS
di/dt=2.5A/us, Vin=12Vdc,
Ta=25°C,Co=3600uF
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Min
Typ
Max
Unit
Efficiency
Vin =12, Vout=1.5V,Iout=90A
82
85
-
%
Efficiency
Vin =12, Vout=1.35V,Iout=90A
81
84
-
%
-
400
-
kHz
Over Temperature Protection
100
-
120
°C
Over Voltage Protection
105
-
115
%Vo
-
33
-
g
Switching Frequency
Weight
FIT
400 (design goal)
-
2.00 x 1.2 x 0.70
50.8 x 30.48 x 17.8
-
Notes
VRP3-90E1A0: Rtrim-up=3.79k
VRP3-90E2A0: VID0=0, VID1=1
VRP3-90E1A0: Rtrim-up=7.86k
VRP3-90E2A0: VID0=0, VID1=1,
Rtrim-down = 16.67k
Latch off
Calculated Per Bell Core SR-332
(Vin=12 V, Vo=1.2 V, Io=80%load, Ta
9
= 25 °C, FIT=10 /MTBF)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Note: All specifications are typical at 25 °C unless otherwise stated.
Efficiency Data
94.00%
EFFICIENCY
89.00%
6.5V
84.00%
12 V
79.00%
13.2 V
74.00%
69.00%
9A
27A
45A
67.5A
90A
OUTPUT CURRENT(A)
Vo=1.5V
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Thermal Derating Curves
The thermal reference point is shown above. For reliable operation this temperature should not exceed 120°C.
The output power of the module should not exceed the rated power for the module.
Vin=12V, Vo=1.35V
Temperature reference points on top side
Vin=12V, Vo=2.1V
Temperature reference points on bottom side
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Aug. 12, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Ripple and Noise Waveform
Note: Ripple and noise at 12Vdc input, Vout=1.5V, Iout=90A and Ta=25 deg C, Co=3600uF.
Transient Response Waveforms
Note: Vout=1.5V, [email protected]=25℃, Co=3600uF.
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Startup & Shutdown
Rise Time
Test Condition:
12Vdc input, Vout=1.5V,
Iout=90A and Ta=25 deg C,
Co=3600uF
Startup time
Startup from Vin
Ch1: Vo
Ch3: Vin
Test Condition: 12Vdc input, Vout=1.5V,
Iout=90A and Ta=25 deg C,Co=3600uF
Startup from on/off
Ch1: Vo
Ch3: on/off
Test Condition: 12Vdc input, Vout=1.5V,
Iout=90A and Ta=25 deg C,Co=3600uF
Shutdown
Test Condition: 12Vdc input, Vout=1.5V, Iout=0A
and Ta=25 deg C,Co=3600uF
Test Condition: 12Vdc input, Vout=1.5V,
Iout=90A and Ta=25 deg C,Co=3600uF
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Remote On/Off
Parameter
Signal Low (Unit Off)
Signal High (Unit On)
Active High
Current Sink
Min
-0.3
Typ
-
Max
0.8
Unit
V
2.4
-
5
V
0
-
1
mA
Notes
The remote on/off pin open, Unit off.
Recommended remote on/off circuit for active high
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Control with open collector/drain circuit
Control with photocoupler circuit
Vin+
Vin+
On/off
On/off
Vin-
Vin-
Vcc
Control with logic circuit
Permanently off
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
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. If the unit is already trimmed up, the available remote sense compensation range should be
correspondingly reduced. The total voltage increased by trim and remote sense should not exceed 10%
of the nominal output voltage.
4. 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.
5. 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-
6. 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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Output Trim Equations
VRP3-90E1A0
Equations for calculating the trim resistor are shown below. The Rtrim resistor should be connected between the
Trim pin and the Vsense(-).
Maximum trim up voltage is 2.1V.
The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
Rtrim −up =
1.1
(kΩ )
Vo − 1.21
VRP3-90E2A0
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected
between the Trim pin and Sense (+) pin. The Trim Up resistor should be connected between the Trim pin and the
GND. Only one of the resistors should be used for any given application.
Minimum trim down voltage is 1.1V
Maximum trim up voltage is 2.1V.
The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.
Vsense+
Vout
Module
Trim
Rtrim -up
Module
Trim
Rtrim-down
GND
Trim up equation
GND
VID0
VID1
Vout
Trim down equation
0
0
1.2V
Rtrim − up =
11
( KΩ)
Vo − 1.2
Rtrim − down =
10Vo − 11
( KΩ )
1.2 − Vo
0
1
1.5V
Rtrim − up =
11
( KΩ )
Vo − 1.5
Rtrim−down =
10Vo −11
(KΩ)
1.5 − Vo
1
0
1.8V
Rtrim − up =
11
( KΩ )
Vo − 1.8
Rtrim − down =
1
1
2.1V
Rtrim −up =
11
( KΩ )
Vo − 2.1
Rtrim − down =
10Vo − 11
( KΩ )
1.8 − Vo
10Vo − 11
( KΩ )
2.1 − Vo
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Over Current Protection
The module is equipped with internal current-limiting circuitry in order to provide protection in a fault output
overload condition. The module will be in latch off mode when the output current exceeds the current limit
and restart by either cycling the input power or by toggling the on/off pin.
Over Voltage Protection
The output over-voltage protection consists of circuitry that monitors the voltage on the output terminals. If
the voltage on the output terminals exceeds the over voltage protection threshold, the module will shutdown
into latch off mode. The over-voltage latch can be reset by either cycling the input power or toggling the
on/off signal for one second at least.
Input Under-voltage Lockout
Input Current
Under-voltage Lockout
Voltage Falling
V1=5.1V
V2=5.7V
Voltage Rising
V1
V2
Input Voltage (V)
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
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 10mA.
3. The maximum voltage pulled up externally on Power Good pin should not exceed 6V.
4. When a successful soft-start is completed, the power good pin will be pulled high.
CH1: Output Voltage CH2: Remote ON/OFF CH3: PG
Typical Start-up Using Remote ON/OFF(Vin=12.0V, Vout=1.5V, Io=90A)
IMON Diagram
Note: The IMON pin is the average channel-current sense output. This pin is used as a load current indicator to
monitor the output load current. When Iout = 90A the voltage on the IMON pin = 900mV.
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
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Mechanical Outline
VRP3-90E1A0
Pin
Function
1
Pin
Function
Pin
Function
Reserved
9
PSI#
17
GND
2
Reserved
10
PGOOD
18
GND
3
Reserved
11
Vin
19
Vout
4
IMON
12
Vin
20
Vout
5
Enable
13
GND
21
GND
6
Vsense+
14
GND
22
GND
7
Vesnse-
15
Vout
23
Vout
8
Trim
16
Vout
24
Vout
VRP3-90E2A0
Pin
Function
Pin
Function
Pin
Function
1
VID0
9
PSI#
17
GND
2
VID1
10
PGOOD
18
GND
3
Reserved
11
Vin
19
Vout
4
IMON
12
Vin
20
Vout
5
Enable
13
GND
21
GND
6
Vsense+
14
GND
22
GND
7
Vesnse-
15
Vout
23
Vout
8
Trim
16
Vout
24
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) All Pins: Material - Copper Alloy;
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate.
2) Undimensioned components are shown for visual reference only.
3) 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
12
NON-ISOLATED DC/DC CONVERTERS
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Signal Definitions
Pin Name
Pin Description
VID0, VID1
Logic level inputs used to set the output voltage,
refer to VID table. Connect VID0 thru VID1 pins to
open-drain outputs with external pull-up resistors or
to active-pull-up outputs. Valid logic low is -0.3V to
0.4V, valid logic high level is 0.8V to 5.3V.
IMON
The IMON pin is the average channel-current sense
output. This pin is used as a load current indicator to
monitor the output load current. The voltage on the
Imon pin = 900mV when Iout = 90A.
Enable
Logic level input used to enable the converter when
high.
Vsense+
Positive remote sense.
Vsense-
Negative remote sense.
Trim
Output voltage Trim.
PSI#
A low input signal indicates the low power mode
operation of the processor. The controller drops the
number of active phases to single phase operation.
A high input signal pulls the controller back to
normal operation.
PGOOD
PGOOD indicates that soft-start has completed and
the output voltage is within the regulated range
around VID setting.
Vin
Input voltage of the converter.
GND
Common return for both input and output.
Vout
Output voltage of the converter.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
13
NON-ISOLATED DC/DC CONVERTERS
6.5 Vdc - 13.2 Vdc Input, 1.2 Vdc - 2.1 Vdc Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Aug. 12, 2010
Revision History
Date
Revision
Changes Detail
Approval
2009-03-17
A
First release
XF JIANG
2009-03-24
B
Updated mechanical drawing
XF JIANG
2009-04-22
C
1. Correct error in part number explanation; 2. Update mechanical
drawing; 3. Update ripple, switching frequency, OVP, FIT, weight; 4.
Add efficiency data, TD, NR, TR, Startup&shutdown, PG waveforms.
XF JIANG
2009-05-05
D
1, Add ripple and noise (p-p) under worst case. 2, Add efficiency curve
of 1.35V output. 3, Add pin description. 4, Update Turn on/off voltage
Threshold.
XF JIANG
2009-05-15
E
1. Add P/N VRP3-90E2A0; 2. Adjust output voltage range; 3. Update
set point, efficiency, trim, FIT.
XF JIANG
2010-03-30
F
1. Remove “Preliminary”, add product picture;
YF SUN
2. Input spec: 1)Update turn on/off voltage;
3. Output spec: 1)Update output voltage setpoint of VRP3-90E1A0; 2)
output current limit; 3) turn on delay time and rise time; 4) output
capacitance; 5) transient response setting time.
4. General spec: 1)Update switching frequency; 2)OTP; 3)product
weight.
5. Update efficiency curve, thermal derating curves, Trim, UVLO,
mechanical top and bottom view.
2010-08-12
G
Add the diagram of IMON
YF SUN
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2010 Bel Fuse Inc. Specifications subject to change without notice. 081210
14
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