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LM21215AMHX-1/NOPB Datasheet(PDF) 25 Page - Texas Instruments

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Part No. LM21215AMHX-1/NOPB
Description  15-A Ultra High-Efficiency Synchronous Buck Converter
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM21215AMHX-1/NOPB Datasheet(HTML) 25 Page - Texas Instruments

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VSYNC (1V/Div)
VSWITCH (2V/Div)
100
1k
10k
100k
1M
-20
0
20
40
60
80
-80
-40
0
40
80
120
160
FREQUENCY (Hz)
GAIN
PHASE MARGIN
0
2
4
6
8
10
12
80
82
84
86
88
90
92
94
96
OUTPUT CURRENT (A)
500kHz
1MHz
1.5MHz
VOUT (10 mV/Div)
LM21215A
www.ti.com
SNOSB87C – MARCH 2011 – REVISED JANUARY 2016
Table 2. Bill of Materials (VIN = 3.3 V to 5.5 V, VOUT = 1.2 V, IOUT = 15 A, FSW = 500 kHz)
REF DES
DESCRIPTION
VENDOR
PART NUMBER
QUANTITY
CF
CAP, CERM, 1 µF, 10 V, ±10%, X7R, 0603
MuRata
GRM188R71A105KA61D
1
CIN1, CIN2, CIN3,
CAP, CERM, 100 µF, 6.3 V, ±20%, X5R, 1206
MuRata
GRM31CR60J107ME39L
6
CO1, CO2, CO3
CC1
CAP, CERM, 1800 pF, 50 V, ±5%, C0G/NP0, 0603
TDK
C1608C0G1H182J
1
CC2
CAP, CERM, 68 pF, 50 V, ±5%, C0G/NP0, 0603
TDK
C1608C0G1H680J
1
CC3
CAP, CERM, 820 pF, 50 V, ±5%, C0G/NP0, 0603
TDK
C1608C0G1H821J
1
CSS
CAP, CERM, 0.033 µF, 16 V, ±10%, X7R, 0603
MuRata
GRM188R71C333KA01D
1
LF
Inductor, Powdered Iron, 560 nH, 27.5A, 1.8 m
Ω, SMD
Vishay Dale
IHLP4040DZERR56M01
1
RF
RES, 1
Ω, 5%, 0.1 W, 0603
Vishay Dale
CRCW06031R00JNEA
1
RC1
RES, 9.31 k
Ω, 1%, 0.1 W, 0603
Vishay Dale
CRCW06039K31FKEA
1
RC2
RES, 165
Ω, 1%, 0.1 W, 0603
Vishay Dale
CRCW0603165RFKEA
1
RFB1, RFB2, RPGOOD RES, 10 kΩ, 1%, 0.1 W, 0603
Vishay Dale
CRCW060310K0FKEA
3
U1
LM21215A Synchronous Buck Regulator
TI
LM21215AMH-1/NOPB
1
8.2.1.3 Application Curves
For additional details on the wavefroms shown in this section, please refer to application note AN-2131
LM21215A Evaluation Board, SNVA477.
Figure 37. Output Ripple Voltage Waveform (1 µs/Div)
Figure 36. Efficiency vs Load Current, VOUT = 1.2 V
Figure 39. Bode Plot
Figure 38. SW and SYNC Voltage Waveforms (1 µs/Div)
Copyright © 2011–2016, Texas Instruments Incorporated
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Product Folder Links: LM21215A


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