ir51hd320 International Rectifier Corp., ir51hd320 Datasheet - Page 2

• Manufacturer Part Number: ir51hd320
• Description: Self-oscillating Half-bridge
• Manufacturer: International Rectifier Corp.

IR51HD320
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.
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
Symbol
Note 1:
V
V
VO
V
V
I
I
dv/dt
P
R
T
T
T
V
V
VO
I
I
T
CC
RT
D
CC
J
S
L
A
IN
B
RT
CT
D
B
IN
JA
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Peak Diode Recovery dv/dt
High Voltage Supply
High Side Floating Supply Absolute Voltage
Half-Bridge Output Voltage
R
C
Supply Current (Note 1)
R
Package Power Dissipation @ T
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
High Side Floating Supply Absolute Voltage
High Voltage Supply
Half-Bridge Output Voltage
Continuous Drain Current
Supply Current (Note 1)
Ambient Temperature
Because of the IR51HD320's application specificity toward off-line supply systems, this IC contains a
zener clamp structure between the chip V
15.6V.
(typically by means of a high value resistor connected between the chip V
voltage and a local decoupling capacitor from V
circuit to determine the nominal supply voltage. Therefore, this circuit should not be driven by a DC,
low impedance power source of greater than V
T
T
T
Voltage
Voltage
Output Current
Therefore, the IC supply voltage is normally derived by current feeding the V
Parameter
Parameter
Definition
Definition
(T
(T
A
A
A
+25ºC
25ºC)
85ºC)
To Order
Index
CC
and COM which has a nominal breakdown voltage of
CLAMP
CC
.
to COM) and allowing the internal zener clamp
VO + 10
Min.
Min.
-0.3
-0.3
-0.3
-0.3
-0.3
-55
-55
-40
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-5
-5
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CC
VO + V
V
V
and the rectified line
V
CC
CC
IN
Max.
Max.
2.00
400
425
150
150
300
400
400
125
4.0
0.9
0.6
25
60
+ 0.3
5
5
+ 0.3
+ 0.3
CLAMP
CC
Units
Units
ºC/W
V/ns
mA
mA
W
ºC
ºC
V
V
A
lead