ST STPS30L40CG, STPS30L40CT, STPS30L40CW User Manual

®	STPS30L40CG/CT/CW

LOW DROP POWER SCHOTTKY RECTIFIER

MAIN PRODUCTS CHARACTERISTICS

IF(AV)	2 x 15 A
VRRM	40 V
Tj (max)	150 °C
VF (max)	0.50 V

FEATURES AND BENEFITS

nVERY SMALL CONDUCTION LOSSES

nNEGLIGIBLE SWITCHING LOSSES

nLOW FORWARD VOLTAGE DROP

nLOW THERMAL RESISTANCE

nAVALANCHE CAPABILITY SPECIFIED

DESCRIPTION

Dual center tap schottky rectifiers suited for Switched Mode Power Supplies and high frequency DC to DC converters.

Packaged in TO-247, TO-220AB and D2PAK these devices are intended for use in low voltage, high frequency inverters, free-wheeling and polarity protection applications.

	A1
	K	K
	A2
		A2
		A1
		D2PAK
		STPS30L40CG
	A2	A2
		K
	A1 K
		A1
	TO-220AB	TO-247
	STPS30L40CT	STPS30L40CW

ABSOLUTE RATINGS (limiting values, per diode)

Symbol						Parameter			Value	Unit
VRRM			Repetitive peak reverse voltage						40	V
IF(RMS)			RMS forward current						30	A
IF(AV)			Average forward current				Tc = 135°C	Per diode	15	A
							δ = 0.5	Per device	30
IFSM			Surge non repetitive forward current				tp = 10 ms Sinusoidal		220	A
IRRM			Repetitive peak reverse current				tp = 2 µs square F=1kHz		1	A
IRSM			Non repetitive peak reverse current				tp = 100 µs square		3	A
PARM			Repetitive peak avalanche power				tp = 1µs Tj = 25°C		6000	W
Tstg			Storage temperature range						- 65 to + 150	°C
	Tj		Maximum operating junction temperature *						150	°C
dV/dt			Critical rate of rise of reverse voltage						10000	V/µs
* :	dPtot		<		1	thermal runaway condition for a diode on its own heatsink
	dTj			Rth( j − a)

July 2003 - Ed: 4A	1/6

STPS30L40CG/CT/CW

THERMAL RESISTANCES

Symbol		Parameter		Value	Unit
Rth (j-c)	Junction to case		Per diode	1.60	°C/W
			Total	0.85
Rth (c)			Coupling	0.10	°C/W

When the diodes 1 and 2 are used simultaneously :

Tj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c)

STATIC ELECTRICAL CHARACTERISTICS (per diode)

Symbol	Parameter	Tests Conditions		Min.	Typ.	Max.	Unit
IR *	Reverse leakage cur-	Tj = 25°C	V R = VRRM			360	µA
	rent
		Tj = 100°C			20	50	mA
VF *	Forward voltage drop	Tj = 25°C	I F = 15 A			0.55	V
		Tj = 125°C	I F = 15 A		0.42	0.50
		Tj = 25°C	I F = 30 A			0.74
		Tj = 125°C	I F = 30 A		0.59	0.67
Pulse test :	* tp = 380 µs, δ < 2%

To evaluate the conduction losses use the following equation :

P = 0.330 x IF(AV) + 0.011 IF2(RMS)

Fig. 1: Average forward power dissipation versus average forward current (per diode).

	PF(av)(W)
	12					δ = 0.2
				δ = 0.1				δ = 0.5
	10		δ = 0.05
	8									δ = 1
	6
	4
										T
	2
						IF(av)A			δ=tp/T		tp
	0
		2	4	6	8	10	12	14	16	18	20
	0

Fig. 2: Average current versus ambient temperature (δ=0.5) (per diode).

	IF(av)(A)
	18
	16			Rth(j-a)=Rth(j-c)
	14
	12
	10	Rth(j-a)=15°C/W
	8
	6	T
	4
	2	δ=tp/T	tp	Tamb(°C)
	0
		25	50	75	100	125	150
	0

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