IR35201 Datasheet, PDF (20/60 Pages) International Rectifier – 8+0/7+1/6+2 Dual Output Digital Multi-Phase Controller

8+0/7+1/6+2 Dual Output Digital Multi-Phase Controller
taken to ensure that the Loop 2 slew rate is set to ½ of
the Loop 1 slew rate. Typical MPoL start-up and shut-
down waveforms are shown in Figure 14 and Figure
15.
Vout 1
Vout 2
IR35201
Figure 13: MPoL Startup
TABLE 12: MPOL START-UP TIMING
Time
TA
TB
TC
Description
VR_EN to Loop 1 start
Loop 2 delay
Voltage ramp complete
to VR_RDY_L1/L2
Min Typ Max
3µs
Table
1µs
Figure 15: MPoL Tracking Shutdown
In MPoL mode, Loop 2 start-up can be delayed
relative to Loop 1 according to 2.
TABLE 13: MPOL LOOP 2 START-UP DELAY
Loop 2 Delay
0 – 678.3usec in 2.66usec Steps
Vout 1
Vout 2
Figure 14: MPoL Tracking Startup
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February 8, 2015 | V1.6