DC-DC Telecom & Networking Solutions

DC-DC Telecom & Networking
Solutions
Applications / End Products
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Fan Out Buffer
Clock Switching
Data Loopback
HCSL FBDIMM
SDH/Sonet
High Speed Precision Edge
General Purpose Clock Generation
Infiniband
10G Ethernet
1G Ethernet
PCIe
iSCSI
Fiber Distributed Data Interface
Fiber Channel
Reduction of System Clock Noise
General Purpose Data & Clock
Interface
Precision Clock Synchronization
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Work Stations
Routers
Switches
Network
Telecom
Line Card
Base Station
Servers
Datacom
ON Semiconductor Offers a Total Solution
Clock Distribution
Clock Generation
ECL Logic
Op Amp
Comparators
Signal & Interface
Surge Protection
ESD Protection
Voltage Translators
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3
Distributed Power Architecture
in Telecom / Networking Equipment
+15 V
+12 V
48 V DC Bus
Battery
Backup
+5 V
+12 V
+3.3 V
+2.5 V
+1.8 V
+1.0 V
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Power Architecture in Datacom Products
+5 V
+3.3 V
+2.5 V
+1.1 V
Adapter
(+12 V / +18 V / +24 V)
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Distributed Power Solution
AC convert to -48 V
-48 V Hot Swap
Isolate Power Conversion
POL Solutions
N+1
Redundant
AC In
AC-DC
Converters
Hot Swap
AC-DC
Converters
Hot Swap
-48 V
Batteries
+
0 V (GND)
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DC-DC
NCP1562
Active Clamp
ORing Diode
MosFET
DC-DC
ORing Diode
CS51021
MosFET
Forward/Flyback
DC-DC
NCP1030/1
Secondary Bias
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Non-Isolate
Power Conversion
Vbias / 12 [email protected] W
DC-DC
NCP54XX
3.3 V @ 50 A
DC-DC
NCP3020
1.2 V @ 12 A
DC-DC
NCP1034
5.0 V @ 15 A
DC-DC
NCP3101/2
1.5 V @ 6 A
1.2 V @ 10 A
5.0 V @ 3 A
DC-DC
NCP312x
3.3 V @ 3 A
MOSFETs
Diodes
LDO
Rectifiers
Networking Power – Reference Design
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Solution :
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Target Application :
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NCP1034
NTD3055, NTD24N06
Networking power
Datacom
+24 V / +48 V Power
Specification :
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Input : +48 V (+/-10%)
Output-1 : 5.0 V @ 8 A
Output-2 : 12 V @ 5 A
Protection: Current Limit, UVLO @ 24 V, Pre-Bias Load
Efficiency: Target >85%
Isolated: NO
Must use ceramic capacitors
Synchronize outputs for reduced EMI
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Component / Topology Justification
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Need synchronization capability to reduce EMI/EMC
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Need to meet good efficiency with optimized external
MOSFETs and scale output current per the requirement
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Non-isolated offers ability to use lower cost standard buck
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NCP1034 offers:
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Up to 100 V input & 2 A synchronous gate drive
Synchronization input
Output voltage down to 1.25 V
Externally adjustable UVLO
ENABLE with low power mode
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NCP1034 – 100 V Synchronous Controller
Value Proposition
The NCP1034 is a flexible synchronous PWM controller designed to operate from wide input supply voltage range up
to 100 V. The NCP1034 provides a 2 A gate drive and is capable of producing output voltages as low as 1.25 V.
Unique Features
• Up
•2
Benefits
to 100 V input
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A Drive Capability
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• Synchronization
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Typical Application diagram & Package info
Suitable for +48 V, +60 V,
+100 V supplies
Drive High Efficiency
FETs
Fixed frequency for 1 or
more devices
Others Features
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External frequency adjustment
Programmable Soft-Start
Programmable Over Current Protection
Hiccup Current Limit Using MOSFET RDS(on)
Wide Input
Voltage Range
Market & Applications
Electronics: xDSL, Modems,
• Automotive: CLA, Infotainment, Navigation
• Computing: Telecom
• Industrial: Power supplies, Process control
• Consumer
Synchronous
Output
Ordering info & Support
SOIC-16
• NCP1034DR2G: -40 to +125°C Tj
•
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Adjustable
UVLO
Circuit and Block Diagram
Type III Comp
(ceramic caps)
External Current
Limit Adjustment
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Synchronization
Without Synchronization
FFT
Analysis
With Synchronization
NCP1034 is synchronized to the rising edge of the input signal
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Without Synchronization
With Synchronization
Start-up into Pre-biased Load
Dark blue – Output voltage
Light blue – SS voltage
Green – Output current
Purple – Bridge voltage
Start to Nominal Load
Start to Pre-biased Output
The NCP1034 is able to startup into a pre-biased output capacitor. The low−side MOSFET
does not turn on before the high−side MOSFET gets the first turn−on pulse. During this time,
the energy is not discharged by the low−side MOSFET until the soft−start sequence crosses
the programmed output voltage.
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Efficiency
90
85
Efficiency [%]
80
75
70
65
Vout = +5 V
60
55
50
0
0,5
1
1,5
2
2,5
IOUT [A]
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3
3,5
Vin = 38 V
4
Vin = 48 V
4,5
5
Vin = 58 V
Reference Design Dual Output 5 A/8 A
Device
Application
Input
Voltage
NCP1034
Network Switch
NCP1034
38 V – 58 V
Output
Voltage
Output
Current
Topology
12 V
5A
Buck
5V
8A
Buck
NCP1034
Characteristic
Min
NCP1034
Typ
Max
Unit
Characteristic
Output Current
8
A
5
A
200
kHz
Oscillator Frequency
mV
Output Voltage Ripple
20.5
Load Regulation
200
16.5
20.6
mV
Load Regulation
Iout = 0.1 – 5 A Vin = 48 V
0.34
mV/A
Line Regulation
Iout = 0.1 – 5 A Vin = 48 V
.035
mV/A
Line Regulation
Iout = 0.1 A
0.004
%
Iout = 0.1 A
.004
%
Iout = 5 A
0.011
%
Iout = 5 A
.012
%
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Unit
V
Output Current
16.5
Max
12
5
Output Voltage Ripple
Typ
Output Voltage
Output Voltage
Oscillator Frequency
Min
Networking Power – Reference Design
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Solution :
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Target Application :
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CS51021
PoE
Datacom
+48 V Power
Specification :
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Input : +48 V (+/-20%)
Output : 5 V @ 5 A
Protection: Current Limit, Undervoltage, Overvoltage
Efficiency: Target >85%
Isolated: YES
Must use ceramic capacitors
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Component / Topology Justification
• Forward Converter
– High efficiency, small output filter, low output ripple,
– High density board design
– Isolation between input and output
• CS51021 offers:
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1 MHz Frequency Capability
Over Voltage Protection with Programmable Hysteresis
Programmable Pulse-by-Pulse Over Current Protection
Current mode control with leading edge blanking
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Max Duty
Cycle Control
Circuit and Block Diagram
Adjustable
Current Limit
(1st and 2nd threshold)
Current Mode
Operation w/ adj
slope compensation
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CS51021 - Current Mode PWM Controller
Value Proposition
The CS51021A Fixed Frequency PWM Current Mode Controller family provides all the necessary features required for AC−DC or DC−DC
primary side control. Several features are integrated eliminating the additional components needed to implement them externally.
Unique Features
Benefits
ƒ
1 A sink/source gate drive
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High efficiency operation
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Up to 1 MHz Fsw
ƒ
Optimize for size or efficiency
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Programmable slope
compensation
ƒ
Increased stability
Application Data
Others Features
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Programmable Max Duty Cycle Limit
Programmable Pulse−By−Pulse Overcurrent Protection
Overvoltage Protection with Programmable Hysteresis
Bidirectional Synchronization
Market & Applications
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Consumer Electronics: PoE PD, …
Automotive: Body electronics, Navigation, …
Computing: Power supply, …
Industrial: Power supplies, Process control, PoE PD, Solar Power
Charger…
Capable of being configured as Forward, Flyback or Boost
Ordering & Package Information
ƒ
ƒ
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SOIC-16 & TSSOP-16
CS51021: -40 to +125°C Tj
Measurement Data
Efficiency
90.00%
85.00%
80.00%
75.00%
Transient Response
70.00%
65.00%
60.00%
55.00%
50.00%
Load Regulation
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0.00
0.50
1.00
1.50
2.00
2.50
+48V Input
3.00
3.50
+72V Input
4.00
4.50
5.00
5.50
6.00
Reference Design – Isolated 5 A Output
Device
Application
Input
Voltage
Output
Voltage
Output
Current
Topology
CS51021
Network Switch
36 V – 72 V
5V
8A
Forward
CS51021
Characteristic
Min
Output Voltage
4.75
5.05
V
Output Current
0
5
A
Oscillator Frequency
Max
330
Output Voltage Ripple
Load Regulation
Typ
4.99
Unit
kHz
50
mV
4.59
V
50 x 53mm
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Basestation Power – Reference Design
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Solution :
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Target Application :
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NCP3102
Basestation, Telecom
+18 V Power
Specification :
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Input : +12 V (+/-20%)
Output : 1.0 V @ 10 A
Protection: Current Limit
Efficiency: Target >75% @ 18 Vin to 1.0 Vout
Isolated: No
Must use ceramic capacitors
Must be able to regulate up to 18 V input
Small size / High power density
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Component / Topology Justification
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Application needs:
– Wide input voltage range buck regulator capable of low duty cycle
and high efficiency conversion to >1.25 V
– Small size / High power density
– Maintain output voltage accuracy in high temp environment
– Lower cost compared to discrete dc-dc module
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NCP310x offers:
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Integrated buck regulator with highly efficient FET (~8 mohm)
Precision internal reference across wide temp range
Thermally enhanced QFN package
Output voltage down to 0.8 V
Easy system integration simplifying embedded system design
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NCP3102 – 10 A Synchronous Converter
Value Proposition
The NCP3102 is an integrated wide input voltage high-output current synchronous PWM buck converter. The 10 A output in a small QFN
package makes the part ideal for high power density designs.
Unique Features
Benefits
• Highly integrated 10 A solution
Application Data
• High Power Density ; Reduced
Board Space
• Integrated FET (10 mΩ
HS & LS)
• Highly Efficient System (>92%
max efficiency)
Others Features
• 275 kHz Switching frequency
• Programmable current limit
• 0.8 V
+/-1% accurate internal reference
Market & Applications
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Consumer Electronics: CRT, LCD TVs, STB, DVD, …
Computing: Power supply
Industrial: Power supplies, Base Station, Broadband & Optical
Communication Infrastructure
Integrated 8 mΩ
mΩ
HS and LS FET
Ordering & Package Information
• QFN-40
• NCP3102: 0 to +85°C
• NCP3102B: -40 to +85°C
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Minimal Support Components
& Ceramic Output Capacitors
Circuit and Block Diagram
Snubber circuit to limit
the max voltage spikes
Regulation circuit to
provide startup bias
8 mΩ HS-FET & 8 mΩ LS-FET provide
high efficiency
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External Bias Circuit
• A simple external circuit was
used to extend the input
voltage capability of the
NCP3102 from 13.2 V to 19 V.
The internal PWM control
section of the NCP3102 uses
a different power rail than the
power FET's. Therefore, the
snubber and regulation
circuitry shown in Figure 4 can
power the low voltage control
section separately.
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Snubber Circuitry
• The circuit shown in Figure 4 and 5 serves as a regulator,
startup delay, and snubber / EMI suppressor.
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Efficiency
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Reference Design – 10 A Regulator
Device
Application
Input
Voltage
Output
Voltage
Output
Current
Topology
NCP3102
Base Station
9.6-14.4 V (18 V)
1.0 V
10 A
Buck
NCP3102
Characteristic
Min
Typ
Max
Unit
Output Voltage
1.0
Output Current
10
A
Oscillator Frequency
275
kHz
Output Voltage Ripple
10
mV
0.27
mV/A
Load Regulation
Iout = 0.5 – 10 A Vin = 18 V
55 x 50mm Physical Size
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•
Telecom Point-of-Load Power –
Reference Design
Solution :
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Target Application :
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NCP3121
Telecom, Datacom
WLAN, Cable Modem, xDSL
Specification :
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Input : +12 V (+/-10%)
Output-1 : 5.0 V @ 3 A
Output-2 : 3.3 V @ 3 A
Protection: Current Limit
Efficiency: Target >80%
Isolated: No
Must use ceramic capacitors
Small size / High power density
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Component / Topology Justification
• Application needs:
– Sequencing capability for power-up and power-down to meet
new chipset requirements (FPGA, ASIC, etc.)
– Small size / High power density
– High volume / Low cost solution
• NCP3121 offers:
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–
–
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Integrated dual 3 A buck regulator
Precision internal reference across wide temp range
Thermally enhanced QFN package
Auto-Tracking and Sequencing feature built-in
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Circuit and Block Diagram
180° out of phase
reduces input cap
Integrated dual 3 A FET
Integrated Sequencing Capability
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Sequencing Requirements
Sequencing guaranteed on power-up and power-down
• Prevent false data from being loaded in I/O buffers
• Timing requirement must also be meet (t1, t2, t3)
• Protect the ASIC from damage (reverse bias ESD structure)
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Auto-Tracking & Sequencing
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The NCP3120 can operate as a standalone
switching converter or it can support autotracking and sequencing
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Adjustment of the soft-start capacitors allows
guaranteed power-up and power-down
operation
•
Enable, Sequence and Track set the
configuration
•
Several devices are also capable of being
daisy chained together to manage multiple
outputs
Eliminates the Need for Additional External Components to
Guarantee Power Management
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Sequencing
Sequencing: The second output
voltage starts ramping when the
first output voltage is already
settled.
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Eliminates External Sequence Chip
LM3880 - Power
Sequencer
LT2928 – Power
Supply Sequencer
ADM1086 – Voltage
Sequencer
• Built-in auto-tracking and sequencing capability eliminates
the need to use an external chip to manage this function
and guarantee performance
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Reference Design Dual Output 3 A / 3 A
Device
Application
NCP3121
Input
Voltage
10.8 – 13.2 V
xDSL
Output
Voltage
Output
Current
Topology
5V
3A
Buck
3.3 V
3A
Buck
NCP3121 (output-1)
Characteristic
Min
Output Voltage
2.274
Output Current
0
Oscillator Frequency
Typ
3.28
NCP3121 (output-2)
Max
5
69
Min
4.982
V
Output Voltage
3
A
Output Current
98
Typ
5.00
Max
5.019
3
Unit
V
A
300
kHz
Oscillator Frequency
mV
Output Voltage Ripple
Load Regulation
5
73
156
mV
Load Regulation
Iout = 0.1 – 3A Vin = 12V
2.97
mV/A
Line Regulation
Iout = 0.1 – 3 A Vin = 12V
4.63
mV/A
Line Regulation
Iout = 0.1A
.35
.47
.64
%
Iout = 0.1A
-.01
.00
.11
%
Iout = 3A
.64
.70
.76
%
Iout = 3A
-.36
-.28
-.20
%
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Characteristic
3.298
300
Output Voltage Ripple
Unit
Telecom Bias Supply – Reference Design
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Solution :
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Target Application :
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•
NCP1031
Basestation, Networking
Specification :
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–
–
–
–
–
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Input : +35 V to +76 V (+48 V)
Output-1 : 12 V
Power: 2 W
Protection: Current Limit, UV/OV
Efficiency: Target >80%
Isolated: Yes
Must use ceramic capacitors
Small size / High power density
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Component / Topology Justification
• Application needs:
– Small size / High power density. Minimal number of support
components.
– Wide input voltage range to cover +48 V Telecom
• NCP1030 offers:
–
–
–
–
Integrated power switch
Internal start-up regulator ; direct power from input voltage
Improved efficiency with SENSEFET™
Reduced EMI with integrated gate drive and power switch
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NCP1030/31 – PWM Controller & Power Switch
Value Proposition
The NCP1030 and NCP1031 are a family of miniature high-voltage monolithic switching regulators with on-chip Power
Switch and Startup Circuits. The NCP103x can be configured in any single-ended topology such as forward or flyback.
Unique Features
Benefits
•
200 V Switch
•
•
Up to 1 MHz Fsw
•
•
Synchronization
•
Typical Application diagram & Package info
Suitable for +48 V, +60 V,
+100 V supplies
Reduced size
Fixed frequency for 1 or
more devices
Others Features
•
•
•
•
Internal Start-up Circuit with aux winding override
External frequency synchronization
Trimmed +/-2% internal reference
Active Leading Edge Blanking (LEB) Circuit
Market & Applications
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•
•
Consumer Electronics: xDSL, Modems
Computing: Telecom
Industrial: Power supplies, Process control, Low Power
Bias supply, 2nd Side Bias w/ isolated dc-dc
Minimal Number of External Components
Ordering info & Support
NCP1030: Micro-8
• NCP1031: SOIC-8 & DFN-8
•
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Schematic
Integrated 200 V Power
Switch w/ SenseFET
Integrated
startup
regulator
Dynamic Self-Supply
(DSS) from the Vcc
capacitor
External adjustment of over voltage
and under voltage trip point
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Integrate Key Function
• NCP1030:
Integrates
- Supervisory
- PWM Controller
- Power Switch
• Discrete Implementation:
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Reduced PCB Space / Higher Density
• A bias supply implemented using the NCP1030
compared to a TL384x and MAX6457 solution results
in a footprint area saving of 91%!!!!
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Performance Data
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Efficiency
Line & Load Regulation
<80% Efficiency
Line Regulation = 0.5%
Load Regulation = 8%
Reference Design – 2 W Bias Supply
Device
Application
Input
Voltage
Output
Voltage
Output
Power
Topology
NCP1030
Base Station
48 V (36-72 V)
12 V
2W
Flyback
NCP1030
Characteristic
Min
Typ
Max
Unit
Output Voltage
10.8
13.2
V
Output Current
0.017
0.17
A
300
kHz
Oscillator Frequency
250
275
Output Voltage Ripple
50
mV
Load Regulation
0.8
%
Output Power
2.0
W
20 x 35mm Physical Size
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Delivering Total Solutions
Clock Distribution
Clock Generation
ECL Logic
Op Amp
Comparators
Signal & Interface
Surge Protection
ESD Protection
Voltage Translators
DC-DC Controllers
DC-DC Regulators
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45
Pow
er E
Solu fficient
tion
s
Product Reference
Designs
nd
a
in
a
h
g
C
n
i
y
r
l
u
p
t
Sup nufac
Ma
For More Information
•
View the extensive portfolio of power management products from ON
Semiconductor at www.onsemi.com
•
View reference designs, design notes, and other material supporting
the design of highly efficient power supplies at
www.onsemi.com/powersupplies
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