IRDCIP2005C-2 International Rectifier, IRDCIP2005C-2 Datasheet

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IRDCIP2005C-2

Manufacturer Part Number
IRDCIP2005C-2
Description
BOARD DEMO SYNC BUCK CONVETER
Manufacturer
International Rectifier
Datasheets

Specifications of IRDCIP2005C-2

Package
Design Kit
Featured Part
iP2005C
Input Voltage (v)
8.5V - 14.5V
Output Voltage (v)
0.8V - 5.0V
Total Current
30A
Phases
1
Switching Frequency (khz)
500kHz
R
IRDCiP2005C-2: 500kHz, 30A, Dual Output,
180
Featuring iP2005C and IR3623M
Overview
This reference design is capable of delivering a continuous current of 30A per
channel without heatsink at an ambient temperature of 45ºC and airflow of
200LFM. Fig. 4 - Fig. 25 provide performance graphs, thermal images, and
waveforms. Fig. 1 - Fig. 3 are provided to engineers as design references for
implementing an IR3623+iP2005C solution.
The components installed on this demoboard were selected based on operation
at an input voltage of 12V (+/-10%), a switching frequency of 500kHz (+/-
15%), and an output voltage of 1.5V at channel-1 and 2.5V at channel-2. Major
changes from these set points may require optimizing the control loop and/or
adjusting the values of input/output filters in order to meet the user’s specific application requirements. Refer to iP2005C and
IR3623 datasheets for more information.
IRDCiP2005C-2 Recommended Operating Conditions
(refer to the iP2005C datasheet for maximum operating conditions)
Input voltage:
Output voltage:
Switching Freq:
Output current:
Demoboard Quick Start Guide
Initial Settings:
VOUT1 is set to 1.5V, but can be adjusted from 0.8V to 5V by changing the values of R11 and R15 according to the following
formula:
VOUT2 is set to 2.5V, but can be adjusted from 0.8V to 5V by changing the values of R12 and R16 according to the following
formula:
The switching frequency is set to 500kHz, but can be adjusted by changing the value of R26. See Fig. 4 for the relationship
between R26 and the switching frequency.
R
International Rectifier  233 Kansas Street, El Segundo, CA 90245 USA
o
Out of Phase Synchronous Buck Converter
E
E
F
F
E
E
R
R
E
8.5V – 14.5V
0.8 – 5V
500kHz
This reference design is capable of delivering a continuous current of 30A per channel without heatsink
at an ambient temperature of 45ºC and airflow of 200LFM.
E
R11 = R15 = (10k * 0.8) / (VOUT1 - 0.8)
R12 = R16 = (10k * 0.8) / (VOUT2 - 0.8)
N
N
C
C
E
E
D
D
7/23/2009
E
E
S
S
I
I
G
G
N
N
IRDCiP2005C-2

Related parts for IRDCIP2005C-2

IRDCIP2005C-2 Summary of contents

Page 1

... International Rectifier  233 Kansas Street, El Segundo, CA 90245 USA IRDCiP2005C-2: 500kHz, 30A, Dual Output, o 180 Out of Phase Synchronous Buck Converter Featuring iP2005C and IR3623M Overview This reference design is capable of delivering a continuous current of 30A per channel without heatsink at an ambient temperature of 45ºC and airflow of 200LFM ...

Page 2

... IRDCiP2005C-2 Power Up Procedure: 1. Apply input voltage across VIN and PGND R45 is not installed, apply bias voltage across VDD and PGND. 3. Apply load across VOUT pads and PGND pads. 4. Toggle the SEQ (SW1) and EN (SW2) switches to the ON position. 5. Adjust load to desired level. See recommendations above. ...

Page 3

... Demoboard Schematic IRDCiP2005C-2 Fig. 1 Schematic 3 www.irf.com ...

Page 4

... IRDCiP2005C-2 Bill of Material www.irf.com 4 ...

Page 5

... Demoboard Component Placement Fig. 2 Top Layer (Face View) Fig. 3 Bottom Layer (Through View) 5 IRDCiP2005C-2 www.irf.com ...

Page 6

... IRDCiP2005C-2 Description of Test Points and Connectors 1. Jumpers Jumper Pin Name SW1 EN SW2 SEQ 2. Test Points/Connectors Test Point Pin Name VIN / PGND TP2 / TP28 VIN / PGND VOUT1 / PGND / PGND TP35 / TP33 VOUT1 / PGND TP21 / TP37 VSW1 / PGND TP9 EN1 TP11 PWM1 TP19 ...

Page 7

... Test Results Fig. 4 Relationship Between Switching Frequency and R26 VIN = 12V, VOUT1 = 1.5V, I Fig. 5 Channel-1 Power Up Sequence (C3: EN, C1: SS1, C4: VOUT1) VIN = 12V, VOUT1 = 1.5V, I Fig. 6 Channel-1 Power Down Sequence (C3: EN, C1: SS1, C4: VOUT1) IRDCiP2005C-2 = 10A 500 kHz out1 sw = 30A 500 kHz out1 ...

Page 8

... IRDCiP2005C-2 VIN = 12V, VOUT2 = 2.5V Channel-2 Power Up Sequence (C3: EN, C1: SS2, C4: VOU VIN = 12V, VOUT2 = 2.5V, I Fig. 8 Channel-2 Power Down Sequence (C3: EN, C1: SS2, C4: VOU VIN = 12V, VOUT1 = 1.5V, f Fig. 9 Hiccup Mode Over Current Protection (C1: SS1, C4: I www.irf.com = 10A 500 kHz out2 sw = 30A, f ...

Page 9

... VIN = 12V, VOUT1 = 1.5V, f Fig. 10 Hiccup Mode Over Current Protection (C1: SS1, C4: I VIN = 12V, VOUT1 = 1.5V, I Fig. 11 Deadtime and Ringing at Switch Node VIN = 12V, VOUT1 = 1.5V p-p Fig. 12 Channel-1 Output Voltage DC Ripple 9 IRDCiP2005C-2 = 500 kHz sw , C3: V OUT1) out1 = 20A 500 kHz out1 sw ...

Page 10

... IRDCiP2005C-2 VIN = 12V, VOUT1 = 1.5V, I Fig. 13 Channel-1 Output Voltage DC Ripple VIN = 12V, VOUT2 = 2.5V, I Fig. 14 Channel-2 Output Voltage DC Ripple VIN = 12V, VOUT2 = 2.5V, I Fig. 15 Channel-2 Output Voltage DC Ripple www.irf.com = 10A 500 kHz out1 18.8 mV p-p = 10A 500 kHz out2 p-p = 10A, f ...

Page 11

... VIN = 12V, VOUT1 = 1.5V 500 kHz sw Fig Load Transient Response (C1: VOUT1 – AC, C2: I VIN = 12V, VOUT2 = 2.5V 500 kHz sw Fig Load Transient Response (C1: VOUT2 – AC, C2 IRDCiP2005C-2 = 0-30A, 0.5A/us, out1 divide out1 = 0-30A, 0.5A/us, out2 divide out2 www.irf.com ...

Page 12

... IRDCiP2005C-2 Fig. 18 Bode Plot (VIN = 12V, VOUT1 = 1.5V, I Fig. 19 Bode Plot (VIN = 12V, VOUT2 = 2.5V, I www.irf.com kHz PM = 62 = 20A) out1 kHz PM = 62 = 20A) out2 12 ...

Page 13

... Channel-1 Load Current (A) Fig. 20 Channel-1 Power Loss VIN = 12V, VOUT1 = 1.5V, 200LFM, fsw = 500kHz, No Heatsink 92% 90% 88% 86% 84% 82% 80% 78% 76% 74 Channel-1 Load Current (A) Fig. 21 Channel-1 Efficiency 13 IRDCiP2005C Internal VDD 45C Internal VDD Room VDD = 6V 45C VDD = 6V Room www.irf.com 30 30 ...

Page 14

... IRDCiP2005C-2 VIN = 12V, VOUT2 = 2.5V, 200LFM, fsw = 500kHz, No Heatsink 7.0 Internal VDD 45C 6.5 Internal VDD Room 6.0 VDD = 6V 45C 5.5 VDD = 6V Room 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1 VIN = 12V, VOUT2 = 2.5V, 200LFM, fsw = 500kHz, No Heatsink 95% 93% 91% ...

Page 15

... VIN = 12V, VDD = 6V, VOUT1 = 1.5V, VOUT2 = 2.5V out 45 Table 1 Maximum Temperature for iP2005C Dual Output Configuration Bias Voltage Internal VDD = 5.2V External VDD = 500kHz, 200LFM, No Heatsink 500kHz, 200LFM, No Heatsink 103 C o 101 C 15 IRDCiP2005C 108 C o 106 C www.irf.com ...

Page 16

... IRDCiP2005C-2 Refer to the following application notes for detailed guidelines and suggestions when implementing iPOWIR Technology products: AN-1043: Stabilize the Buck Converter with Transconductance Amplifier This paper explains how to design the voltage compensation network for Buck Converters with Transconductance Amplifier. The design methods and equations for Type II and Type III compensation are given. AN-1028: Recommended Design, Integration and Rework Guidelines for International Rectifier’ ...

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