参数资料
型号: ISL6551ABZ-T
厂商: Intersil
文件页数: 23/26页
文件大小: 0K
描述: IC REG CTRLR FLYBACK PWM 28-SOIC
标准包装: 1,000
PWM 型: 电流模式
输出数: 6
频率 - 最大: 1MHz
占空比: 50%
电源电压: 10.8 V ~ 13.2 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
ISL6551
(2) FULL BRIDGE DRIVERS
HIP2100IB
Q1_G
UPPER1
HI HO
HS
LI
VSS LO
Q1_G
P–
Q3_G
UPPER1
P–
Q3_S
UPPER2
P+
UPPER2
HIP2100IB
Q2_G
HI HO
HS
LI
VSS LO
Q2_G
P+
Q4_G
Q3_G
LOWER1
Q4_S
LOWER1
LOWER2
Q3_S
Q4_S
LOWER2
Q4_G
FIGURE 24A. FULL BRIDGE HIGH CURRENT DRIVERS
FIGURE 24B. FULL BRIDGE MEDIUM CURRENT DRIVERS
HIP2100IB
UPPER1
LOWER1
HI
LI
HO
HS
Q1G
P–
PGND
VSS LO
HIP2100IB
Q3_G
Q3_S
UPPER2
LOWER2
HI
LI
HO
HS
Q2_G
P+
PGND
VSS LO
Q4_G
Q4_S
FIGURE 24C. FULL BRIDGE PRIMARY CONTROL
Full Bridge High Current Drivers - External high current
drivers are required and less power is dissipated in the
ISL6551 controller. Secondary control. Operate at the
switching frequency.
Full Bridge Medium Current Drivers - No external drivers
are required. Secondary control. Operate at the switching
frequency.
Full Bridge Primary Control - Lower drivers can directly
drive the power switches, while upper drivers require the
assistance of level-shifting circuits such as a pulse
transformer or Intersil’s HIP2100 half-bridge driver. External
high current drivers are not required in medium power
applications, but level-shifting circuits are still required for
upper drivers. Operate at the switching frequency.
23
FN9066.5
January 3, 2006
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