ADUM6000 Datasheet, PDF (9/16 Pages) Analog Devices – Isolated, 5 kV, DC-to-DC Converter

Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
V_DD1 1
GND₁ 2
NC 3
RC_IN 4
RC_OUT 5
RC_SEL 6
V_DD1 7
GND₁ 8
ADuM6000
TOP VIEW
(Not to Scale)
16 V_ISO
15 GND_ISO
14 NC
13 V_SEL
12 NC
11 NC
10 V_ISO
9 GND_ISO
NC = NO CONNECT
Figure 3. Pin Configuration
ADuM6000
Table 12. Pin Function Descriptions
Pin No.
Mnemonic Description
1, 7
VDD1
Primary Supply Voltage, 3.0 V to 5.5 V. Pin 1 and Pin 7 are internally connected to each other, and it is
recommended that both pins be externally connected to a common power source.
2, 8
GND1
Ground Reference for the Primary Side of the Converter. Pin 2 and Pin 8 are internally connected to each
other, and it is recommended that both pins be connected to a common ground.
3, 11, 12, 14 NC
No Internal Connection.
4
RCIN
Regulation Control Input. In slave power configuration (RCSEL low), this pin is connected to the RCOUT pin of a
master isoPower device, or it is tied low to disable the converter. In master or standalone mode (RCSEL high),
this pin has no function. This pin is weakly pulled to the low state. In noisy environments, it should be tied low
or tied to a PWM control source. This pin must not be tied high if RCSEL is low; this combination causes excessive
voltage on the secondary side of the converter, damaging the ADuM6000 and possibly the devices that it powers.
5
RCOUT
Regulation Control Output. In master power configuration (RCSEL high), this pin is connected to the RCIN pin of
a slave isoPower device to allow the ADuM6000 to regulate additional devices.
6
RCSEL
Control Input. Sets either standalone/master mode (RCSEL high) or slave mode (RCSEL low). This pin is weakly
pulled to the high state. In noisy environments, tie this pin either high or low.
9, 15
GNDISO
Ground Reference for the Secondary Side of the Converter. Pin 9 and Pin 15 are internally connected to each
other, and it is recommended that both pins be connected to a common ground.
10, 16
VISO
Secondary Supply Voltage Output for External Loads. 3.3 V (VSEL low) or 5.0 V (VSEL high). The 5.0 V output
functionality is not guaranteed for a 3.3 V primary supply input. Pin 10 and Pin 16 are internally connected
to each other, and it is recommended that both pins be externally connected.
13
VSEL
Output Voltage Selection. When VSEL = VISO, the VISO setpoint is 5.0 V. When VSEL = GNDISO, the VISO setpoint is 3.3 V.
This pin is weakly pulled to the high state. In noisy environments, tie this pin either high or low. In slave mode,
this pin has no function.
Table 13. Truth Table (Positive Logic)
RCSEL
Input
RCIN
Input
RCOUT
Output
VSEL
Input
H
X
PWM ¹
H
H
X
PWM¹
L
H
X
PWM¹
H
H
X
PWM¹
L
L
RCOUT(EXT) RCIN
X
L
L
L
X
L
H
H
X
VDD1
Input
5.0 V
5.0 V
3.3 V
3.3 V
X²
X
X
VISO
Output
5.0 V
3.3 V
5.0 V
3.3 V
X
0V
X
Operation
Master mode operation, self regulating.
Master mode operation, self regulating.
This configuration is not recommended due to poor efficiency.
Master mode operation, self regulating.
Slave mode, RCOUT(EXT) supplied by a master isoPower device.
Low power mode, converter disabled.
This combination of RCIN and RCSEL is prohibited. Damage occurs on the
secondary side of the converter due to excess output voltage at VISO.
RCIN must be low, or it must be connected to a PWM signal from a
master isoPower part.
1 _{PWM refers to the regulation control signal. This signal is derived from the secondary side regulator or from the RCIN input, depending on the value of RCSEL.}
2 _{VDD1 must be common between all isoPower devices being regulated by a master isoPower part.}
Rev. D | Page 9 of 16