SNVAA21 August 2021 LM61480-Q1 , LM61495-Q1 , LM62460 , LM62460-Q1

4 Schematic and BOM

Figure 4-1 System Level Block Diagram

Test Condition:

VIN = 16 V
VOUT = 3.3 V
IOUT = 9A Continuous | 12 A Peak (4.5 A continuous per phase)

Figure 4-2 Dual Phase Application Full Schematic

Notes:

The EN pins of both channels are connected to each other.
The positive supply rail, +Vs, of the op-amp was connected to the Vout for these tests. However it is recommended to connect to an external auxiliary supply rail that is operational before these converters are started up.
This is a preliminary design and the component values and circuit schematic might need adjustments.
Two separate EVMs were used and wired together, along with a breakout board for the op-amp circuit, for this design.

Table 4-1 LM62460RPHEVM 6-A 2.1-MHz EVM Bill of Materials

DESIGNATOR	DESCRIPTION	MANUFACTURER	PART NUMBER	QUANTITY
C1	CAP, AL, 100 uF, 63 V, +/- 20%, 0.35 ohm, AEC-Q200 Grade 2, SMD	Panasonic	EEE-FK1J101P	2
C2, C3	CAP, CERM, 10 uF, 50 V, +/- 10%, X5R, 1210	TDK	C3225X5R1H106K250AB	4
C4, C5	CAP, CERM, 0.47 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0603	TDK	CGA3E3X7R1H474K080AB	4
C6	CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0402	TDK	CGA2B3X7R1H104K050BB	2
C7, C11	CAP, CERM, 2.2 μF, 10 V,+/- 10%, X7R, AEC-Q200 Grade 1, 0603	MuRata	GRM188R71A225KE15J	4
C8, C9	CAP, AL, 100 μF, 16 V, ±20%, AEC-Q200 Grade 3, SMD	MuRata	GCM32EC71A476KE02K	4
C10	CAP, AL, 100 μF, 16 V, +/- 20%, AEC-Q200 Grade 3, SMD	Panasonic	EEE-1CA101AP	2
C12	CAP, CERM, 10 pF, 50 V, +/- 5%, C0G/NP0, AEC-Q200 Grade 1, 0603	TDK	CGA3E2C0G1H100D080AA	2
C13	CAP, CERM, 0.15 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0603	TDK	CGA3E3X7R1H154K080AB	2
C14	CAP, CERM, 1 uF, 16 V, +/- 20%, X7R, AEC-Q200 Grade 1, 0603	MuRata	GCM188R71C105MA64D	2
Cx1	CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, 0805	MuRata	GRM21BR71H104KA01L	1
Cx2, Cx3, Cx4	CAP, CERM, 100 pF, 50 V, +/- 5%, C0G/NP0, 0805	Kemet	C0805C101J5GACTU	3
L1	Inductor, Shielded, Composite, 800 nH, 13 A, 0.01 ohm, AEC-Q200 Grade 1, SMD	Coilcraft	XAL5030-801MEB	2
R1	RES, 49.9, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW060349R9FKEA	2
R2	RES, 187 k, 1%, 0.1 W, 0603	Yageo	RC0603FR-07187KL	2
R3	RES, 0, 5%, 0.063 W, AEC-Q200 Grade 0, 0402	Vishay-Dale	CRCW04020000Z0ED	2
R4	RES, 49.9 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW060349K9FKEA	2
R6, R11, R13	RES, 100 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW0603100KFKEA	6
R7	RES, 0, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Stackpole Electronics Inc	RMCF0603ZT0R00	2
R8	RES, 4.99 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW06034K99FKEA	2
R9	RES, 21.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW060321K0FKEA	2
R12	RES, 6.81 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW06036K81FKEA	2
R14	RES, 43.2 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW060343K2FKEA	2
R15	RES, 59.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW060359K0FKEA	2
Rx2, Rx7	RES, 100, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW1206100RFKEA	2
Rx3, Rx8	RES, 49.9 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW120649K9FKEA	2
Rx4	RES, 499 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW1206499KFKEA	1
Rx5	RES, 1.00 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW12061K00FKEA	1
Rx6	RES, 10.0 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW120610K0FKEA	1
Rx9	RES, 332 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206	Vishay-Dale	CRCW1206332KFKEA	1
U1	LM62460QRPHTQ1, RPH0016A (VQFN-HR-16)	Texas Instruments	LM62460QRPHTQ1	2
Ux1	OPA991IDBVR operational amplifier	Texas Instruments	OPA991IDBVR	1
Cx5	CAP, CERM, 1000 pF, 50 V, +/- 5%, C0G/NP0, 1206	MuRata	GRM3195C1H102JA01D	0
R5, R10	RES, 100 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603	Vishay-Dale	CRCW0603100KFKEA	0