IR3080MTRPBF International Rectifier, IR3080MTRPBF Datasheet - Page 31

• Manufacturer Part Number: IR3080MTRPBF
• Description: IC CONTROLLER PHASE 32LMLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3080MTRPBF

• Applications: Processor
• Current - Supply: 11mA
• Voltage - Supply: 9.5 V ~ 14 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Ic Function: Control IC With VCCVID And Overtemp Detect
• Supply Voltage Range: 9.5V To 14V
• Operating Temperature Range: 0°C To +100°C
• Digital Ic Case Style: MLPQ
• No. Of Pins: 32
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Controller Type: PWM
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 150kHz to 1.0MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: IR3080MPBFTR; IR3080MTRPBF; IR3080MTRPBFTR

DESIGN EXAMPLE 2 - EVRD 10 HIGH FREQUENCY ALL-CERAMIC CONVERTER
SPECIFICATIONS
Input Voltage: V
DAC Voltage: V
No Load Output Voltage Offset: V
Output Current: I
Maximum Output Current: I
Output Impedance: R
VCC Ready to VCC Power Good Delay: t
VID Delay Time: t
Soft Start Time: t
Over Current Delay: t
Dynamic VID Down-Slope Slew Rate: SR
Over Temperature Threshold: T
POWER STAGE
Phase Number: n=6
Switching Frequency: f
Output Inductors: L=100 nH, R
Output Capacitors: Ceramic, C=22uF, R
IR3080 EXTERNAL COMPONENTS
Oscillator Resistor Rosc
Once the switching frequency is chosen, R
frequency of 800kHz per phase, choose R
VID Delay Capacitor C
Given VID delay time t
Soft Start Capacitor C
Because faster over-current protection is required, the soft start capacitor C
R
Calculate the soft start resistor from the required over current delay time t
The soft start delay time is
C
C
t
R
SSDEL
VIDDEL
SS/DEL
SS
SS
/
/
Page 31
DEL
DEL
=
=
=
=
C
is used. Calculate the soft start capacitor from the required soft start time.
66
SS
. 0
I
CHG
09
/
*
DEL
V
10
. 3
O
−
∗
DAC
−
I
91
t
=12 V
t
∗
O
6
SS
OCDEL
SS
I
VID
*
1 (
=105 ADC
DISCHG
=2.9mS
t
=1.3 V
3 .
VID
=
C
=2.5mS
I
OCDEL
O
SS
−
70
CHG
VID
∗
=0.91 mΩ
SW
=
SS/DEL
/
R
VIDDEL
I
DEL
*
1
SS
DISCHG
66
3 .
10
=800 kHz
=2.5mS
/
OMAX
=2.1mS
−
DEL
*
−
6
10
20
∗
and Resistor R
L
∗
−
2
*
PCB
=0.5 mΩ
=
6
. 3
9 .
=120 ADC
10
I
∗
O_NLOFST
,
CHG
. 0
91
*
the capacitor can is,
2
−
=115 ºC
10
09
5 .
3
)
−
*
−
3
10
=
C
. 2
=
. 0
VccPG
DOWN
= 2mΩ, Number Cn=62
−
* 1
6
OSC
3
. 0
15
=20 mV
*
. 0
=
16
10
10
*
OSC
15
42
=13.3kΩ
uF
SS/DEL
−
10
=0-10mS
−
=2.5mV/uS
3
*
6
nF
∗
10
−
, choose C
6
6
can be determined from the curve in Figure 13. For switching
, choose 47nF
∗
*
−
6
10
1 (
70
3 .
−
6
*
−
10
=
1
*
1
−
SS/DEL
k
10
6
Ω
3
*
70
=0.15uF
*
10
−
6
OCDEL
)
=
2
6 .
,
mS
SS/DEL
in series with the resistor
IR3080PbF