AN 959: DC-DC Converter Design Example

ID 703007
Date 11/12/2021
Public

Resource Usage for the DC-DC Converter Design Example

The design can run at different clock frequencies up to 125 MHz.
Table 1.  Resource Usage for DC-DC Converter Design ExampleAt different clock frequencies

Frequency

(MHz)

LEs Registers Memory Bits M9Ks Embedded Multiplier 9-bit elements Latency (FPGA clock cycles) Latency (ns)
10 1,553 363 0 0 12 7 700
20 1,562 424 0 0 12 8 400
50 1,713 679 135 1 10 15 300
100 1,949 1115 162 1 10 24 240
125 1,762 1049 486 2 10 28 224
Table 2.  Resource Usage for DC-DC Converter Design ExampleFor PI controller and PWM comparison at different clock frequencies

Frequency

(MHz)

LEs Registers Memory Bits M9Ks Embedded Multiplier 9-bit elements Latency (FPGA clock cycles) Latency (ns)
10 610 122 0 0 0 1 100
20 611 135 0 0 0 1 50
50 709 168 0 0 4 6 120
100 742 284 0 0 4 10 100
125 689 323 0 0 0 12 96