IEPC EPC9001C, Быстрый старт

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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 3
EPC9001C
Figure 4: Typical Waveforms for V
IN
= 24 V to 1.2 V/15 A (500 kHz) Buck converter
CH1: V
PWM
Input voltage – CH3: (I
OUT
) Switch node current – CH4: (V
OUT
) Switch node voltage
Figure 1: Block Diagram of EPC9001C Development Board
Figure 2: Proper Connection and Measurement Setup
Figure 3: Proper Measurement of Switch Node – OUT
V
DD
V
IN
PWM
Input
OUT
Gate Drive
Regulator
Logic and
Dead-time
Adjust
LM5113
Gate
Driver
Gate Drive
Supply
Half-Bridge with Bypass
7 V – 12 V
V
DD
Supply
PWM Input
External Circuit
V
IN
Supply
<
70 V
V
IN
+
+
+
–
–
–
I
IN
V
A
Gate Drive Supply
(Note Polarity)
(For Efficiency
Measurement)
Switch Node
V DEVELOPMENT BOARD
eGaN® FET © EPC 2013
Rev. 5.0
EPC
EFFICIENT POWER CONVERSION
EPC9001C, 40
Do not use probe ground lead
Place probe in large via at OUT Minimize loop
Ground probe
against TP3
EPC900 V DEVELOPMENT BOARD 1C, 40
eGaN® FET © EPC 2013
Rev. 5.0
EPC
EFFICIENT POWER CONVERSION
Table 2 : Bill of Material
Item Qty Reference Part Description Manufacturer / Part #
1 3 C4, C10, C11, Capacitor, 1 µF, 10%, 25 V, X5R Murata, GRM188R61E105KA12D
2 2 C16, C17 Capacitor, 100 pF, 5%, 50 V, NP0 Kemet, C0402C101K5GACTU
3 2 C9, C19 Capacitor, 0.1 µF, 10%, 25 V, X5R TDK, C1005X5R1E104K
4 3 C21, C22, C23 Capacitor, 4.7 µF, 10%, 50 V, X5R TDK, C2012X5R1H475K125AB
5 2 D1, D2 Schottky Diode, 30 V Diodes Inc., SDM03U40-7
6 3 J1, J2, J9 Connector 2pins of Tyco, 4-103185-0
7 1 J3, J4, J5, J6, J7, J8 Connector FCI, 68602-224HLF
8 2 Q1, Q2 eGaN® FET EPC, EPC2015C
9 1 R1 Resistor, 10.0 K, 5%, 1/8 W Stackpole, RMCF0603FT10K0
10 2 R2, R15 Resistor, 0 Ohm, 1/8 W Stackpole, RMCF0603ZT0R00
11 1 R4 Resistor, 7.5 Ohm, 1%, 1/8 W Stackpole, RMCF0603FT7R50
12 1 R5 Resistor, 47 Ohm, 1%, 1/8 W Stackpole, RMCF0603FT47R0
13 6 R19, R20, R21, R22, R23, R24 Resistor, 0 Ohm, 1/16 W Stackpole, RMCF0402ZT0R00
14 2 TP1, TP2 Test Point Keystone Elect, 5015
15 1 TP3 Connector 1/40th of Tyco, 4-103185-0
16 1 U1 I.C., Logic Fairchild, NC7SZ00L6X
17 1 U2 I.C., Gate driver Texas Instruments, LM5113TME
18 1 U3 I.C., Regulator Microchip, MCP1703T-5002E/MC
19 1 U4 I.C., Logic Fairchild, NC7SZ08L6X
20 0 R14 Optional Resistor
21 0 D3 Optional Diode
22 0 P1, P2 Optional Potentiometer