MAX1887EEE Datasheet Download

Part No.:
MAX1887EEE
Download:
Download Datasheet
Description:
[SMPS Controller ]
File Size:
1015 K
Page:
33 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
 MAX1887EEE Datasheet Page:3MAX1887EEE Datasheet Page:4MAX1887EEE Datasheet Page:5MAX1887EEE Datasheet Page:6MAX1887EEE Datasheet Page:8MAX1887EEE Datasheet Page:9MAX1887EEE Datasheet Page:10MAX1887EEE Datasheet Page:11 
Quick-PWM Slave Controllers for
Multiphase, Step-Down Supplies
MAX1887/MAX1897
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V+ = 12V, V
CC
= V
DD
= 5V, V
OUT
= 1.3V (ZMODE = GND) and 1V (ZMODE = V
CC
),
SHDN
= V
CC
(MAX1897))
COMPENSATION OUTPUT CURRENT vs.
CURRENT-SENSE VOLTAGE DIFFERENTIAL
MAX1887 toc10
MINIMUM TRIGGER PULSE WIDTH
vs. OVERDRIVE VOLTAGE
MAX1887 toc11
TRIGGER PROPAGATION DELAY
vs. OVERDRIVE VOLTAGE
450
400
350
300
250
200
150
100
50
0
RISING (OUT-OF-PHASE)
FALLING (IN-PHASE)
MAX1887 toc12
100
80
60
40
ICOMP (┬ÁV)
20
0
-20
-40
-60
-80
-100
-150
-100
-50
0
50
100
OUT = CM+ = CM- = CS-
I
COMP
= G
M
(V
CS+
- V
CS-
)
500
450
TRIGGER PULSE WIDTH (ns)
400
350
300
250
200
150
100
50
0
FALLING (IN-PHASE)
RISING (OUT-OF-PHASE)
ON-TIME TRIGGERED
ABOVE THE LINE
500
TRIGGER PROPAGATION DELAY (ns)
150
0
0.5
1.0
1.5
2.0
0
0.5
1.0
1.5
2.0
V
CS+
- V
CS-
(V)
OVERDRIVE VOLTAGE (V)
OVERDRIVE VOLTAGE (V)
POSITIVE CURRENT-LIMIT THRESHOLD
vs. ILIM VOLTAGE
140
POSITIVE CURRENT LIMIT (mV)
120
100
80
60
40
20
0
0
0.5
V
ILIM
(V)
1.0
1.5
STANDBY MODE
MAX1887 toc13
160
MASTER OR SLAVE
_______________________________________________________________________________________
7