ISL6315 INTERSIL [Intersil Corporation], ISL6315 Datasheet - Page 5

• Manufacturer Part Number: ISL6315
• Description: Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers
• Manufacturer: INTERSIL [Intersil Corporation]

Electrical Specifications
NOTES:
Timing Diagram
Functional Pin Description
VCC (Pin 8)
Bias supply for the IC’s small-signal circuitry. Connect this
pin to a 5V supply and locally decouple using a quality 0.1µF
ceramic capacitor.
PVCC (Pin 16)
Power supply pin for the MOSFET drives. Connect this pin to
a 5V supply and locally decouple using a quality 1µF
ceramic capacitor.
PROTECTION
Overvoltage Threshold while IC Disabled
Overvoltage Threshold
Overvoltage Hysteresis
SWITCHING TIME
UGATE Rise Time (Note 3)
LGATE Rise Time (Note 3)
UGATE Fall Time (Note 3)
LGATE Fall Time (Note 3)
UGATE Turn-On Non-overlap (Note 3)
LGATE Turn-On Non-overlap (Note 3)
OUTPUT
Upper Drive Source Resistance
Upper Drive Sink Resistance
Lower Drive Source Resistance
Lower Drive Sink Resistance
3. Parameter magnitude guaranteed by design.
UGATE
LGATE
PARAMETER
t
PDHUGATE
5
t
Test Conditions: V
FLGATE
VRM9.0 configuration
Hammer and VRM10.0 configurations
FB Rising
t
t
t
t
t
t
100mA Source Current
100mA Sink Current
100mA Source Current
100mA Sink Current
CC
RUGATE;
RLGATE;
FUGATE;
FLGATE;
PDHUGATE
PDHLGATE
t
RUGATE
= 5V, T
V
V
V
V
J
VCC
VCC
VCC
; V
VCC
; V
= 0°C to 85°C, Unless Otherwise Specified (Continued)
ISL6315
ISL6315
VCC
VCC
TEST CONDITIONS
= 5V, 3nF Load
= 5V, 3nF Load
= 5V, 3nF Load
= 5V, 3nF Load
= 5V, 3nF Load
= 5V, 3nF Load
GND and PGND (Pins 25 and 14)
Connect these pins to the circuit ground using the shortest
possible paths. All internal small-signal circuitry is
referenced to the GND pin. LGATE drive is referenced to the
PGND pin.
VID0-4 (Pins 2, 1, 24-22)
Voltage identification inputs from microprocessor. These pins
respond to TTL logic thresholds. The ISL6315 decodes the
VID inputs to establish the output voltage; see VID Tables for
correspondence between DAC codes and output voltage
settings. These pins are internally pulled high, to
approximately 1.2V, by 40µA (typically) internal current
t
PDHLGATE
t
FUGATE
1.90
1.60
MIN
-
-
-
-
-
-
-
-
-
-
-
-
+200mV
1.95
TYP
1.65
VID
100
1.0
1.0
1.0
0.4
8
8
8
4
8
8
t
RLGATE
MAX
2.00
1.70
2.5
2.5
2.5
1.0
February 10, 2006
-
-
-
-
-
-
-
-
FN9222.0
UNITS
mV
ns
ns
ns
ns
ns
ns
Ω
Ω
Ω
Ω
V
V
V