ISL6219A_07 Datasheet, PDF (6/17 Pages) Intersil Corporation – Microprocessor CORE Voltage Regulator Precision Multi-Phase BUCK PWM Controller for Mobile Applications

ISL6219A
Electrical Specifications Operating Conditions: V_CC = 5V, T_A = -10°C to +85°C, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
PROTECTION and MONITOR
Overvoltage Threshold
VSEN Rising
112 115
12
VSEN Falling
-
VID
-
Undervoltage Threshold
VSEN Rising
85
92
95
VSEN Falling
80
83
90
UNITS
%V_DAC
%V_DAC
%V_DAC
%V_DAC
NOTES:
2. These parts are designed and adjusted for accuracy within the system tolerance given in the Electrical Specifications. The system tolerance
accounts for offsets in the differential and error amplifiers; reference-voltage inaccuracies; temperature drift; and the full DAC adjustment range.
3. VID input levels above 2.9V may produce an reference-voltage offset inaccuracy. Use a current limit resistor when pull up to 5V.
R_C
C_C
COMP
ERROR
AMPLIFIER
+
FB
-
-
+
+
-
DAC
&
REFERENCE
+
-
I_OUT
R_FB
ISL6219A
+
-
+
-
+
-
VSEN
PWM
CIRCUIT
PWM
CIRCUIT
PWM
CIRCUIT
AVERAGE
CURRENT
SENSE
CURRENT
SENSE
CURRENT
SENSE
PWM1
VIN
L₁
ISEN1
R_ISEN1
PWM2
VIN
L₂
ISEN2
R_ISEN2
PWM3
VIN
L₃
ISEN3
R_ISEN3
FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF THE ISL6219A
V_OUT
C_O
μP
LOAD
6
FN9093.1
March 20, 2007