IR51H310 データシートの表示（PDF） - International Rectifier
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IR51H310 Datasheet PDF : 6 Pages
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IR51H310
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All
voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead.
The Thermal Resistance and Power Dissipation ratings are measured under board mounted and still air
conditions.
Symbol
VIN
VB
VO
VRT
VCT
ICC
IRT
dv/dt
PD
RθJA
TJ
TS
TL
Parameter
Definition
High Voltage Supply
High Side Floating Supply Absolute Voltage
Half-Bridge Output Voltage
RT Voltage
CT Voltage
Supply Current (Note 1)
RT Output Current
Peak Diode Recovery dv/dt
Package Power Dissipation @ TA ≤ +25ºC
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
Min.
-0.3
-0.3
-0.3
-0.3
-0.3
---
-5
---
---
---
-55
-55
---
Max.
400
425
V+ + 0.3
VCC + 0.3
VCC + 0.3
25
5
4.0
2.00
60
150
150
300
Units
V
mA
V/ns
W
ºC/W
ºC
Recommended Operating Conditions
The Input/Output logic timing diagram is shown in Figure 1. For proper operation the device should be used
within the recommended conditions.
Symbol
VB
VIN
VO
ID
ICC
TA
Parameter
Definition
High Side Floating Supply Absolute Voltage
High Voltage Supply
Half-Bridge Output Voltage
Continuous Drain Current (TA = 25ºC)
Supply Current (Note 1)
(TA = 85ºC)
Ambient Temperature
Min.
VO + 10
---
-5
---
---
---
-40
Max.
VO + VCLAMP
400
400
0.70
0.45
5
125
Units
V
A
mA
ºC
Note 1:
Because of the IR51H310's application specificity toward off-line supply systems, this IC contains a
zener clamp structure between the chip VCC and COM which has a nominal breakdown voltage of
15.6V. Therefore, the IC supply voltage is normally derived by current feeding the VCC lead
(typically by means of a high value resistor connected between the chip VCC and the rectified line
voltage and a local decoupling capacitor from VCC to COM) and allowing the internal zener clamp
circuit to determine the nominal supply voltage. Therefore, this circuit should not be driven by a DC,
low impedance power source of greater than VCLAMP.
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