Texas Instruments TPS40090EVM-002 manual Features, Schematic

SLUU195 − June 2004

2	Features
			Table 1. TPS40090EVM−002 Performance Summary
			PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNITS
		Input voltage range				10.5	12.0	14.0	V
		Output voltage set point				1.477	1.508	1.540
		Output current range		VIN = 12 V		0	100	120	A
		Line regulation(1)		IOUT rising from 10 A to 100 A,			±0.1%
				10.5 V ≤ VIN ≤ 14 V
		Load regulation		IOUT rising from 10 A to 100 A			±0.3%
		Load transient response voltage		IOUT rising from 10 A to 100 A			−160		mVPK
		change		IOUT falling from 100 A to 10 A			200
		Load transient response recovery		IOUT rising from 10 A to 100 A			< 10		∝s
		time		IOUT falling from 100 A to 10 A			< 15
		Loop bandwidth		IOUT = 100 A,	IOUT = 10 A		89		kHz
		Phase margin		IOUT = 100 A			40		°
		Input ripple voltage					80	200	mVPK
		Output ripple voltage					15	25
		Output rise time							ms
		Operating frequency				370	418	454	kHz
		Full load efficiency		VIN = 12 V,	VOUT = 1.5 V,		84.3%
				IOUT = 100 A
		Current sharing tolerance		VIN = 12 V,	VOUT = 1.5 V,		±5%	±10%
				IOUT = 100 A
3	Schematic

12V+

+

Phase Programming
	R65	R66
4−phase	open	open
3−phase	open	1k
2−phase	1k	1k
Figure 1. TPS40090EVM−002 Schematic Part 1 − TPS40090 Controller and Pre-Bias Circuit
TPS40090 Multi-Phase Buck Converter and TPS2834 Drivers Steps-Down from 12-V to 1.5-V at 100 A			5