ISL8120IRZ-T Intersil, ISL8120IRZ-T Datasheet - Page 21

• Manufacturer Part Number: ISL8120IRZ-T
• Description: IC CTRLR PWM 2/NPHASE 32-QFN
• Manufacturer: Intersil

Specifications of ISL8120IRZ-T

• Pwm Type: Voltage Mode
• Number Of Outputs: 2
• Frequency - Max: 1.5MHz
• Duty Cycle: 90%
• Voltage - Supply: 3 V ~ 22 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Frequency-max: 1.5MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CH1 UG (1
CH2 UG (1
CLKOUT (1
CH1 UG (2
CH2 UG (2
CH1 UG (1
CH2 UG (1
CLKOUT (1
CH1 UG (2
CH2 UG(2
VCC
ND
ST
ST
ND
ND
ST
ST
ND
700mV
ST
ST
IC, OFF, EN2/FF2 = 0)
IC)
IC)
IC)
IC)
IC)
IC)
IC)
IC)
IC)
VSEN2- VSEN2+
D
D
21
AMP2
DIFF
FIGURE 3. SIMPLIFIED RELATIVE PHASES CONTROL
120°
90°
90°
120°
VMON2
PWM CONTROL
D
D
180°
240°
CHANNEL 1
3-PHASE TIMING DIAGRAM (MODE 6)
BLOCK
V
4-PHASE TIMING DIAGRAM (MODE 7A)
REF2
= V
ISL8120IRZEC
REF
COMP2
UV/OV
RELATIVE PHASES CONTROL
1-D
1-D
D
180°
D
CLOCK GENERATOR
FB2
AND
1-D
ERROR
AMP2
D
COMP2
50%
PWM CONTROL
CHANNEL 2
BLOCK
50%
CLKOUT/REFIN
April 21, 2009
FN6763.1