參數(shù)資料
型號: ISL6225CAZ
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Dual Mobile-Friendly PWM Controller with DDR Memory Option
中文描述: DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28
封裝: PLASTIC, LEAD FREE, SSOP-28
文件頁數(shù): 7/19頁
文件大?。?/td> 522K
代理商: ISL6225CAZ
7
F
D
Block Diagram
ERROR AMP 1
V
HYS
=15mV
Σ
VSEN1
HYSTERETIC COMPARATOR 1
MODE CHANGE COMP 1
300k
PWM1
+
0.9V REFERENCE
ISEN1
100
SAMPLE
CURRENT
SAMPLE
CURRENT
PHASE1
PGND1
UGATE1
BOOT1
LGATE1
VCC
+
0.9V REFERENCE
OCSET1
1/3
OCSET1
1/32
ISEN1
ERROR AMP 2
ADAPTIVE DEAD-TIME
DIODE EMULATION
V/I SAMPLE TIMING
PWM/HYS TRANSITION
V
HYS
=15mV
Σ
VSEN2
HYSTERETIC COMPARATOR 2
MODE CHANGE COMP 2
1M
15.2pF
1.3pF
500k
300k
PWM2
+
0.9V REFERENCE
ISEN2
100
SAMPLE
CURRENT
SAMPLE
CURRENT
PHASE2
PGND2
UGATE2
BOOT2
LGATE2
VCC
+
0.9V REFERENCE
OCSET2
1/3
OCSET2
1/32
ISEN2
DDR
VIN
VCC
DUTY CYCLE RAMP GENERATOR
PWM CHANNEL PHASE CONTROL
OC2
OC1
DDR=0
DDR=1
DDR VTT
REFERENCE
DDR=0
DDR=1
8 CLOCK CYCLES
REQUIRED TO LATCH
OVER-CURRENT FAULT
SAME STATE FOR
8 CLOCK CYCLES
REQUIRED TO CHANGE
PWM OR HYS MODE
SAME STATE FOR
8 CLOCK CYCLES
REQUIRED TO CHANGE
PWM OR HYS MODE
SAME STATE FOR
8 CLOCK CYCLES
REQUIRED TO LATCH
OVER-CURRENT FAULT
SAME STATE FOR
VCC
PG1
OV UV
PGOOD
DDR VREF
BUFFER AMP
DDR=1
DDR=0
1.3pF
500k
1M
15.2pF
OV UV
PGOOD
VOUT1
VOUT2
ADAPTIVE DEAD-TIME
DIODE EMULATION
V/I SAMPLE TIMING
PWM/HYS TRANSITION
VOLTS/SEC
CLAMP
VOLTS/SEC
CLAMP
OC1 DDR
POR
FAULT LATCH
BIAS SUPPLIES
REFERENCE
ENABLE
SOFT-START
GND
EN1
EN2
REF/PG2
SOFT1
SOFT2
DDR MODE
CONTROL
OC2
DDR EN1 EN2
VIN
CH1CH2
φ
0
1
1
0
24.0V
180o
1
1
1
90o
4.2
<
VIN
<
24.0V
VIN to GND
0o
+
+
-
-
-
+
-
+
-
+
-
+
-
+
+
-
+
-
+
-
-
+
+
-
-
+
+
-
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