ISL6551EVAL1 Intersil, ISL6551EVAL1 Datasheet - Page 22

• Manufacturer Part Number: ISL6551EVAL1
• Description: EVALUATION BOARD ISL6551
• Manufacturer: Intersil

Specifications of ISL6551EVAL1

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Isolated
• Voltage - Output: 3.3V
• Current - Output: 60A
• Voltage - Input: 36 ~ 75V
• Regulator Topology: Buck
• Frequency - Switching: 470kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6551
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Primary FET Drivers
(1) PUSH-PULL DRIVERS
Push-Pull Medium Current Drivers - Upper drivers are not
used. No external drivers are required. Secondary control.
Operate at the switching frequency.
Push-Pull High Current Drivers - Upper drivers are not
used. External high current drivers are required and less
power is dissipated in the ISL6551 controller. Secondary
control. Operate at the switching frequency.
Push-Pull Primary Control - Upper drivers are not used.
Both lower drivers can directly drive the power switches.
External drivers are required in high gate capacitance
applications.
FIGURE 23A. PUSH-PULL MEDIUM CURRENT DRIVERS
LOWER1
LOWER2
22
FIGURE 23C. PUSH-PULL PRIMARY CONTROL
Q3_S
Q4_S
Q3_G
Q4_G
LOWER2
LOWER1
PGND
ISL6551
HIP2100IB
HI
LI
VSS
LOWER1
LOWER2
HO
HS
LO
FIGURE 23B. PUSH-PULL HIGH CURRENT DRIVERS
Q3_S
Q3_G
Q4_G
Q4_S
VSS
HI
LI
HIP2100IB
HO
HS
LO
January 3, 2006
FN9066.5
Q3_G
Q3_S
Q4_G
Q4_S