STMICROELECTRONICS RHFL7913KPA2

RHFL7913A
Rad-hard adjustable negative voltage regulator
Features
■
3 A low dropout voltage
■
Optional overtemperature and overcurrent
protection
■
Adjustable overcurrent limitation
■
Load short circuit monitoring
■
Adjustable output voltage
■
Inhibit (ON/OFF) TTL-compatible control
■
Programmable output short-circuit current
limitation
■
Remote sensing operation
■
Rad-hard: sustains 300 krad in Mil-1019.7 at
High & ELDRS low dose rate conditions
■
Heavy ions, SEL immune at 68 MeV/cm²/mg
LET ions; able to Sustains 2x1014 protons/cm2
FLAT-16
SMD5C:
5-connection SMD
Description
The RHFL7913A adjustable is a high
performance Rad hard negative voltage regulator.
Available in FLAT-16 and new SMD5C hermetic
ceramic packages, it is specifically intended for
space and harsh radiation environments. It
provides exceptional electrical performances,
high speed and low dropout voltage.
Input supply ranges from -3 V to -12 V. It also
provide logical control / monitor functions (inhibit,
output monitor, short-circuit control) from/to
external positive voltage signals, while the entire
RHFL7913A adjustable analog functions are
biased at negative voltages with respect of ground
pin. The device is QML-V qualified with SMD
5962-02532.
August 2008
Rev 4
1/19
www.st.com
19
Contents
RHFL7913A
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
5.1
ADJ pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2
Inhibit ON-OFF control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3
Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.4
Overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.5
OCM pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.6
Alternates to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1
Remote sensing operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Die information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
RHFL7913A
Diagram
1
Diagram
Figure 1.
Block diagram
3/19
Pin configuration
RHFL7913A
2
Pin configuration
Figure 2.
Pin configuration (top view for FLAT-16, bottom view for SMD5C)
SMD5C
FLAT-16
Table 1.
4/19
Pin description
Pin n°
FLAT-16
SMD5C
DSCC Part Ident.
5962-02532
5962-02532
1
VI, Negative Input
VI, Negative Input
2
VI, Negative Input
VI, Negative Output
3
VI, Negative Input
ADJ
4
ISC
Inhibit
5
OCM
GND
6
VPLUS, Positive Supply
7
GND
8
N.C.
9
N.C.
10
GND
11
Inhibit
12
ADJ
13
N.C.
14
VO, Negative Output
15
VO, Negative Output
16
VO, Negative Output
RHFL7913A
Maximum ratings
3
Maximum ratings
Table 2.
Maximum operating ratings (1)
Symbol
VI
Parameter
Value
DC input voltage |VIN – VPLUS|
-12
Logical block supply voltage V(+)-V(GND), unless grounded
+5
VI
DC voltage, VIN–GND, VPLUS= 0V
-12
VI
DC voltage, VIN–GND, VPLUS=+3V
-9
VO
DC output voltage range
VPLUS
IOUT
PD
Unit
V
-9 to -1.20
RHFL7913KPA
2
RHFL7913SCA
3
RHFL7913KPA
15
RHFL7913SCA
15
Output current
A
TC = 25 °C power dissipation
W
TSTG
Storage temperature range
-65 to +150
TOP
Operating junction temperature range
-55 to +150
ESD
Electrostatic discharge capability
°C
Class 3
1. Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under
these conditions is not implied.
Table 3.
Thermal data
Symbol
Parameter
Value
Unit
RthJC
Thermal resistance junction-case, FLAT-16 and SMD5C
8.3
°C/W
TSOLD
Maximum soldering temperature, 10 sec.
300
°C
Value
Unit
-12 to -1.3
V
0 to +3
V
VPLUS=0V, VI= -12 to -3.7V
-9.5 to -1.2
V
VPLUS=+3V, VI= -9 to -3.7V
-6.5 to -1.2
V
-55 to +125
°C
Table 4.
Recommended operating conditions
Symbol
VI
Parameter
Input voltage range VI (at VPLUS= 0V)
VPLUS
Positive supply range
VO
Output voltage range
TA
Ambient operating temperature range
5/19
Electrical characteristics
RHFL7913A
4
Electrical characteristics
Table 5.
Electrical characteristics
(TJ = 25 °C, VI = VO+2.5 V, CI = CO = 1 µF, unless otherwise specified)
Symbol
VI
VO
Parameter
Operating input voltage IO= 1A (KPA) or 2A (SCA)
Operating output
voltage
ΔVO/ΔVI Line regulation
ΔVO/VO
IQ
IQ
6/19
Test conditions
Load regulation
Quiescent current
ON MODE
Quiescent current
OFF MODE
Min.
Typ.
Max.
-12
V
IO= 1A, VO = -1.2V, FLAT 16
-1.28
-1.16
IO= 1A, VO = -9V, FLAT 16
-9.6
-8.7
IO= 2A, VO = -1.2V, SMD5C
-1.28
-1.16
IO= 2A, VO = -9V, SMD5C
-9.6
-8.7
V
VI = VO - 2.5V to -12V, IO = 5mA,
TJ = 25°C
0.2
VI = VO - 2.5V to -12V, IO = 5mA,
TJ = -55°C and +125°C
0.5
VI = VO - 2.5V, IO = 5mA to 400mA,
TJ = 25°C
0.4
VI = VO - 2.5V, IO = 5mA to 400mA
TJ = -55°C and +125°C
0.5
VI = VO - 2.5V, IO =-5mA to 1A, TJ = 25°C
0.5
VI = VO - 2.5V, IO = 5mA to 1A,
TJ = -55°C and +125°C
0.6
%
IO = 5mA, VI = VO -2.5V, TJ = 25°C
-3
IO =-30mA, VI = VO -2.5V, TJ = 25°C
-6
IO = 300mA VI = VO -2.5V,
TJ = 25°C and +125°C
-15
IO = 300mA VI = VO -2.5V, TJ = -55°C
-20
IO = 1A VI = VO -2.5V,
TJ = 25°C and +125°C
-30
IO = 1A VI = VO -2.5V, TJ = -55°C
-50
IO = 3A VI = VO -2.5V, VINH= 0,
TJ = +25°C and +125°C Only for SMD5C
-90
IO = 2A VI = VO -2.5V, VINH= 0,
TJ = -55°C Only for SMD5C,
TBD
VO = -1.2V, VI = -7V, VPLUS = +5V,
VINH > 2.3V, TJ = -55°C to +125°C
Unit
mA
1
mA
RHFL7913A
Table 5.
Symbol
VD
IPLUS
Electrical characteristics
Electrical characteristics (continued)
(TJ = 25 °C, VI = VO+2.5 V, CI = CO = 1 µF, unless otherwise specified)
Parameter
Dropout voltage
(1)
VPLUS Current
Test conditions
Min.
IO = 400mA VO =-2.5V to -9V, TJ = 25°C
-450
IO = 400mA VO =-2.5V to -9V,
TJ = -55°C and +125°C
-500
IO = 1A VO =-2.5V to -9V, TJ = 25°C
-750
IO = 1A VO =-2.5V to -9V,
TJ = -55°C and +125°C
-800
Typ.
Max.
mV
VI = -5.5V, VPLUS = 5V, VINH = 5V,
TJ = 25°C
0.75
VI= -5.5V, VPLUS = +5V, VINH = 5V
TJ = -55°C and +125°C
1
mA
VI = VO – 2.5V, IO = 5mA, F = 120Hz
60
VI = VO – 2.5V, IO= 5mA, F = 33kHz
20
SVR (1)
Supply voltage
rejection
tPLH (1)
Inhibit propagation
delay
VINH < 0.8V, VPLUS = 5V, VI = VO -2.5V
IO = 400mA
20
(1)
Inhibit propagation
delay
VINH >2.3V, VPLUS = 5V, VI = VO -2.5V
IO = 400mA
100
Inhibit voltage
VI = -7V VPLUS= +5V IO = 5mA
TJ = -55°C to 125°C
tPHL
VINH(ON)
VINH(OFF)
ISH
VOCM
en
Shutdown input current VINH=5V
OCM pin voltage
Sinked IOCM = 10mA, active low
Output noise voltage
f = 10Hz to 100kHz IO = 5mA to 2A
Unit
dB
µs
0.8
V
2.3
15
µA
0.38
V
40
µVrms
1. These values are guaranteed by design. For each application it’s strongly recommended to comply with the maximum
current limit of the package used.
7/19
Device description
5
RHFL7913A
Device description
The RHFL7913A adjustable contains a NPN-type power element controlled by signal
resulting from amplified comparison between internal temperature compensated band-gap
cell and the fraction of the desired output voltage value, generated by an external resistor
divider bridge. The NPN structure allows access to lower drop out levels because its base
current can be routed to ground pin and not to output. To control and monitor the device
from / to the external logic world – usually operating in positive voltage area – a dedicated
logic interface block (INHIBIT and OCM functions) has been implemented with +3 V to +5 V
supplied line V(+). In case V(+) = 0 V, inhibit and OCM functions are not available: In this
condition, INHIBIT function is ON and OCM pin is “no care”. The device is internally
protected by several blocks.
5.1
ADJ pin
The load voltage feed back comes from an external divider resistor bridge middle point to
ADJ pin established between load terminals.
5.2
Inhibit ON-OFF control
When INHIBIT pin is TTL-high (positive), the device switches off current and voltage output.
The device is ON when INHIBIT pin is set TTL-low.
5.3
Overtemperature protection
A temperature detector internally monitors power element junction temperature. The device
goes OFF circa 165 °-175 °C are reached, and returns ON when circa 100 °C. When
internal temperature detector reaches 170 °C, the active power element can be at 225 °C:
Device reliability cannot be granted during extensive operation duration with these
conditions.
5.4
Overcurrent protection
ISC pin. An internal non-fold back short-circuit limitation is set with ISHORT > 4 A (VO is 0 V).
This value can be downward modified by an external resistor connected between ISC and VI
pins, with a typical value range of 10 kΩ to 200 kΩ. To keep excellent VO regulation, it is
necessary to set ISHORT 1.6 times greater than the maximum desired application IO. When
IO reaches ISHORT – 300 mA, the current limitor overrules regulation and VO starts to drop
and OCM flag is risen. When no current limitation adjustment is required, ISC pin shall be left
unbiased (as it is in 3 pin packages).
5.5
OCM pin
Goes low when current limitor starts to be active, otherwise VOCM = V (+). It is bufferized
and can sink 10 mA. OCM pin is internally pulled-up by a 50 kΩ resistor. Can left open when
V (+) = 0.
8/19
RHFL7913A
5.6
Device description
Alternates to
RHFL7913A is recommended to replace all industry negative regulators due to its
exceptional radiation performances. To replace 3-terminal industry devices, use customized
RHFL7913 fixed voltage versions.
9/19
Application information
6
RHFL7913A
Application information
Adjusting output voltage: R1 resistor must be connected between VO and ADJ pins. R2
resistor must be connected between ADJ and GND pins. Resistor values can be derived
from the following formula:
VO = VADJ (1 + R1/R2) with VADJ = -1.20 V
To access all RHFL7913A adjustable functionality, V (+) shall be set at 3.0 V (max 5 V). As a
consequence, VI (-) cannot be greater than –9.0 V (resp. –7 V) due to –12 V maximum
operation rating.
The device is functional as soon as VI - VO voltage difference is slightly above power
element saturation voltage. The adjustable pin to Ground resistor shall not be greater than
10 kΩ to make output feedback error be below 0.2%. A minimum 0.5 mA IO is necessary to
set to ensure perfect “no-load” regulation. It can be wise to dissipate this current into the
divider bridge resistor.
All available VI pins shall always be PCB interconnected, the same for all available VO pins,
otherwise device stability and reliability cannot be granted. The INHIBIT function switches
off output current in an electronic way, is very quickly. According to Lenz’ Law, external
circuitry reacts with –LdI/dt terms which can be of high amplitude in case some seriesinductance exists. Effect would be large transient voltage developed on both device
terminals. External Schottky diodes set on VI and VO may prevent voltage excursions
beyond max ratings. In the worst case, a 14 V Zener diode shall protect the device input. In
case of capacitive load, a input-output protection diode can be necessary to prevent VO to
be greater than VI during transient operation.
The device has been designed for high stability and low drop out operation: minimum 1 µF
input and output tantalum capacitors are therefore mandatory. Typical industry PCB design
practices 10 µF capacitors values are acceptable. Capacitor ESR range is from 0.020 Ω to
over 20 Ω. Such range turns out to be useful when ESR increases at low temperature. When
large transient currents are expected, larger value capacitors are necessary.
In case of high current operation with expected short-circuit events, caution shall be
considered relatively to capacitors. They shall be connected as close as possible form
device terminals. As some tantalum capacitors may permanently fail when submitted to high
charge-up surge currents, it is recommended to decouple them with 470 nF polyester or
ceramic capacitors.
RHFL7913A adjustable being manufactured with very high speed bipolar technology (6 GHz
fT transistors), the PCB layout shall be performed with unprecedented care, very low
inductance, low mutually coupling lines, otherwise high frequency parasitic signals may be
picked-up by the Device resulting into system self-oscillation. In difficult high current
circumstances (coming from PCB layout) a 470 nF polyester capacitor connected between
VO and ADJ pin increases stability margins. Benefit is SVR performances extended to far
higher frequencies.
10/19
RHFL7913A
6.1
Application information
Remote sensing operation
When load is physically far away from device output, the adjustable line can be set as a
kelvin sense line by implementing the divider resistor bridge as close as possible form
device, with a decoupling capacitor. The adjust pin kelvin sense line (to be not coupled with
power line) picks-up load voltage (load also locally decoupled with a capacitor). This layout
eliminates ohmic drop in load power wire. Similarly, by taking advantage of two separate
ground terminals: power ground pin shall be directly connected to load ground terminal
which is also the system ground, device signal ground shall be separately connected to load
ground terminal by another kelvin line: In this way, ground ohmic errors are minimized
because the only current flowing into device signal ground pin kelvin line is device Iq (a
matter of a few mA).
11/19
Die information
7
RHFL7913A
Die information
RHFL7913A adjustable is also available in die form. Space dice are electrically tested by
STMicroelectronics in such a way that, when mounted in proper thermal and electrical
substrate, they are in full compliance with equivalent packaged device:
DIE physical dimensions.
DIE size: 110 mils x 166 mils
DIE thickness: 375 µm +/-25 µm (14.8 mils +/- 1 mil)
Pad size:
VI, VO pads: 245 µm x 544 µm
Control pads: 184 µm x 184 µm
Interface materials
Top Metallization: Al/Si/Cu 1.05 µm +/- 0.15 µm
Backside metallization: None
Glassivation
Type: P.Vapox + Nitride
Thickness: 0.6 µm +/- 0.1µm + 0.6µm +/-0.08 µm
Substrate: Silicon (connected to VI = Vminus)
The SENSE pad is layout on the die but is not electrically connected to the IC and shall be
left non-bonded during hybrid bonding.
Figure 3.
12/19
DIE size
RHFL7913A
8
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
13/19
Package mechanical data
RHFL7913A
FLAT-16 (MIL-STD-1835) mechanical data
mm.
inch.
Dim.
Min.
A
Typ.
2.16
Max.
Min.
2.72
0.085
Typ.
0.107
b
0.43
0.017
c
0.13
0.005
D
9.91
0.390
E
6.91
0.272
E2
4.32
0.170
E3
0.76
0.030
e
1.27
0.050
L
6.72
0.265
Q
0.66
S1
0.13
Max.
1.14
0.026
0.045
0.005
b
e
c
L
E3
9
16
E
E2
1
8
E3
L
S1
D
14/19
Q
A
7450901A
RHFL7913A
Package mechanical data
SMD5C mechanical data
Dim.
mm.
inch.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
2.84
3.00
3.15
0.112
0.118
0.124
A1
0.25
0.38
0.51
0.010
0.015
0.020
b
7.13
7.26
7.39
0.281
0.286
0.291
b1
4.95
5.08
5.21
0.195
0.200
0.205
b2
2.28
2.41
2.54
0.090
0.095
0.100
b3
2.92
3.05
3.18
0.115
0.120
0.125
D
13.71
13.84
13.97
0.540
0.545
0.550
D1
0.76
E
7.39
0.296
0.301
e
0.030
7.52
1.91
7.65
0.291
0.075
7924296B
15/19
Packaging
9
RHFL7913A
Packaging
RHFL7913A adjustable is available in high thermal dissipation 16 pin hermetic FLAT
package, which bottom flange is metallized to allow direct soldering to heat sink (efficient
thermal conductivity). It is also available in SMD5C hermetic ceramic package.
16/19
RHFL7913A
Order codes
10
Order codes
Table 6.
Order codes
Die
FLAT-16
SMD5C
Terminal
finish
Quality level
RHFL7913KPA1
GOLD
EM1
RHFL7913KPA2
GOLD
EM2= EM1 + 48hours BI
RHFL7913KPA-01V
GOLD
QML-V
RHFL7913KPA-02V
SOLDER
QML-V
RHFL7913SCA1
GOLD
EM1
RHFL7913SCA2
GOLD
EM2= EM1 + 48hours BI
RHFL7913SCA-03V
GOLD
L7913ADIE2S
EM1 die
L7913ADIE2V
QML-V
Note:
EM1: Engineering parts, full temperature range, flight packages, no burn-in
EM2: Same as above but with burn-in, used in Satellite EQMs
Table 7.
Table 8.
Part number - SMD equivalent
ST part number
SMD part number
RHFL7913KPA-01V
5962F0253201VXC
RHFL7913KPA-02V
5962F0253201VXA
RHFL7913SCA-03V
5962F0253202VYC
L7913ADIE2V
5962F0253201V9A
Environmental characteristics
Parameter
Conditions
Value
Unit
Output voltage thermal drift
-55 °C to +125 °C
40
ppm/°C
Output voltage radiation drift
From 0 kRad to 300k Rad at 0.55rd/sec
8
ppm/krad
Output voltage radiation drift
From 0 kRad to 300 kRad, MIL1019.5
6
ppm/krad
17/19
Revision history
RHFL7913A
11
Revision history
Table 9.
Document revision history
Date
Revision
16-May-2006
1
First release.
22-Aug-2006
2
The pin description for SMD5C on table 1 updated.
19-Dec-2007
3
Modified: Table 6.
26-Aug-2008
4
Modified: Features on page 1, Table 1 on page 4, the VI value Table 4 on
page 5, Table 5 on page 6 and Section 6 on page 10.
18/19
Changes
RHFL7913A
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19/19