IR3088 データシートの表示（PDF） - International Rectifier
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コンポーネント説明
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IR3088 Datasheet PDF : 34 Pages
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IR3088
PARAMETER
General
VCC Supply Current
VCCL Supply Current
VCCH Supply Current
BIASIN Bias Current
DACIN Bias Current
TEST CONDITION
6V ≤ VCCH ≤ 14V
14V ≤ VCCH ≤ 25V
Note 1: Guaranteed by design, but not tested in production
MIN TYP MAX UNIT
10
14
mA
2.5
5
mA
5.5
8
mA
6.5
10
mA
-5
-2.5
2
µA
-2
-0.5
1
µA
PIN DESCRIPTION
PIN#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PIN SYMBOL PIN DESCRIPTION
RMPIN+ Non-inverting input to Ramp Comparator
RMPIN- Inverting input to Ramp Comparator
HOTSET
Inverting input to VRHOT comparator. Connect resistor divider from VBIAS to LGND
to program VRHOT threshold. Diode or thermistor may be substituted for lower
resistor for enhanced/remote temperature sensing.
VRHOT
Open Collector output of the VRHOT comparator which drives low if IC junction
temperature exceeds the user programmable limit. Connect external pull-up.
ISHARE
Output of the Current Sense Amplifier and input to the Share Adjust Error Amplifier.
Voltage on this pin is equal to V(DACIN) + 34 * [V(CSIN+) – V(CSIN-)]. Connecting
ISHARE pins together creates a Share Bus enabling current sharing between Phase
ICs. The Share bus is also used by the Control IC for voltage positioning and Over-
Current protection.
SCOMP
Compensation for the Current Share control loop. Connect a capacitor to ground to se
the control loop’s bandwidth.
EAIN
PWM comparator input from the error amplifier output of Control IC. Both Gate Driver
outputs drive low if the voltage on this pin is less than 91% of V(DACIN).
PWMRMP PWM comparator ramp input. Connect a resistor from this pin to the converter input
voltage and a capacitor to LGND to program the PWM ramp.
LGND Signal ground and IC substrate connection
VCC
Power for internal circuitry
VCCL
Power for Low-Side Gate Driver
GATEL Low-Side Gate Driver Output and input to GATEH non-overlap comparator
PGND Return for Gate Drivers
GATEH High-Side Gate Driver Output and input to GATEL non-overlap comparator
VCCH Power for High-Side Gate Driver
CSIN+ Non-inverting input to the Current Sense Amplifier
CSIN- Inverting input to the Current Sense
PHSFLT
Open Collector output of the Phase Fault comparator. Drives low if Phase current is
unable to match the level of the SHARE bus due to an external fault. Connect externa
pull-up.
DACIN
Reference voltage input from the Control IC. Current sensing and PWM operation
referenced to this pin.
BIASIN System reference voltage for internal circuitry
Page 5 of 34
9/30/04
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