Applications
IDC2000 Applications for Power Supplies
Interconnectivity between the IDC2000 and a typical Power Supply
 Each PSG Channel has two outputs: PSG & SPWM .
PSG port aimed for any desired sequential signal.
SPWM port can serve to generate a complementary signal for the PSG port signal for half
bridge application or a PWM signal controlled by CPU (Software).
IDC2068 model drives up to 11 half bridges (Synchronous Buck), up to 5 full ridges, etc. for
multiple voltage applications.
UPMC Multi-Phase Partitioning Application
Scalable to the required number of phases and to the power level.
Lower cost and minimum parts count
High noise immunity
Full power management
No power heat transferred into the controller
Configurable control algorithms
Allows control of additional multiphase and/or other types of power supplies
Higher efficiency
Premium performance
Example is based on output current measured on the output inductor and using half bridge blocks with integrated dumb drivers. Other current measurement methods and power components structures can be chosen.
Multi-Phase All-Ceramic VRM Application:
Comparison with Other Solution in the Market
|
Competitor |
Systel Alt. 1 |
Systel alt.2 |
PCB
|
6 |
6 |
4 |
Connector |
100nHy |
100nHy |
150nHy |
Control |
1350µF |
220µF |
560µF |
plain drv |
800kHz |
800kHz |
390kHz |
Coils |
800kHz |
>4000kHz |
>6000kHz |
Fets bridge |
25-50 mV |
Non |
Non |
ceramic cap 22uF |
17.32$ |
11.37$ |
10.17$ |
Cost Analysis
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Cost (¢) |
Others |
Systel
alt.1 |
Systel
alt.2 |
PCB |
62 |
62 |
62 |
62 |
Connector |
15 |
15 |
15 |
15 |
Control |
55 |
55 |
150 |
150 |
ph drv |
40 |
240 |
|
|
plain drv |
20 |
|
120 |
80 |
Coils |
15 |
90 |
90 |
60 |
Fets bridge |
100 |
600 |
600 |
400 |
ceramic cap 22uF |
10 |
670 |
100 |
250 |
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Total Cost |
1732 |
1137 |
1017 |
VI. DC-DC Converter Application
Another application that demonstrates the power of the UPMC is a multiphase buck converter operating at switching frequency of 6MHz per phase at the load step-up transient of 100A and a slope current of 1000A/µsec. The multiphase converter ( includes 4 HB legs driven and controlled by the IDC2100 which is a future upgrade version in the UPMC road map aimed for ultra-fast switching mode power supplies.
Four phase synchronized buck converter used for the simulation study.
An approximate parameters simulation study was performed to compare the expected performance of the 4 phase converter in respect to a 6 phase converter alternative, amongst others to show the capabilities of the envisioned solutions. The 4 phase alternative operates at 200KHz and the 6 phase at 800KHz. In the IDC implementation the switching frequency rises to about 6MHz during the transients to achieve the targeted results.
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Steady State Switching Frequency
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Power Circuit Electrical Parameters:
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Low Side Diode – Forward Voltage
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Phase Inductor Inductance
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Bulk Capacitor – Total ESL
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Ceramic Capacitors Capacitance
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CPU Ceramic Capacitors ESR
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Control Parameters Specifications:
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Load Step Down – Analog Detect Time
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Load Step Down – Response Time
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Total Step Down Response Time
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Notes: Total Stage Delay Time: delay in FETs and drivers
Total Delay Time: Including delay in controller processing |
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Load Step Down Max. Over Deviation
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Step-Down Sense Response Time
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Load Step Up Max. Under Deviation
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Notes: Over Deviation from Targeted Vcc = VID – (Icc*0.91m + 25m). Load Step Up Max. Under deviation: - 22mV (6ph), >15mV(4ph) over the allowed minimum limit
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The Digital Power Control Pioneers 
