MIC2584 Datasheet, PDF (8/28 Pages) Micrel Semiconductor – Dual-Channel Hot Swap Controller/Sequencer

MIC2584/2585
Timing Diagrams
GATE1
GATE2
ON
GATE1 ON
GATE2 ON
100mV
GATE1 ON
GATE1 OFF
GATE2 OFF
OFF
GATE2 ON
ON Pin Asserted
VOUT1 - VOUT2
ON
GATE1 OFF
GATE2 OFF
GATE1 ON
GATE2 OFF
OFF
100mV
GATE1 OFF
GATE2 ON
ON Pin Deasserted
VOUT1 - VOUT2
Figure 2. Gate Voltage Window — Tracking Mode
(V_CCx – V_SENSEx)
V_GATEx
50mV
V_TRIPFAST
t_OCSLOW
0.5V
0.5V
Figure 3. Current Limit Response
t_OCFAST
MIC2584/2585
ON
CPOR
V_OUT[1,2]
V_START
t_START
V_POR
V_PG[1/2]
PG_[1/2]
t_POR
/POR
Figure 4. Start-Up Cycle Timing
V_OUT1
∆V<0.25V
∆V<0.25V
V_OUT2
Tracking Mode, TRK = V_OUT1 or V_OUT2
V_OUT1,V_OUT2
(-1) (-2)
V_FB
∆V<0.25V
V_OUT2,V_OUT1
t_DLY
(-1) (-2)
Sequencing/Tracking Mode, TRK = V_OUT1 or V_OUT2
(-1) - V_OUT2 follows V_OUT1
(-2) - V_OUT1 follows V_OUT2
Figure 5. Sequencing Modes (MIC2585 only)
8
Micrel
March 2005